docs: release v1.6.0

Signed-off-by: sakumisu <1203593632@qq.com>
update(class/cdc): change serial state macro
2026-01-28 13:15:53 +08:00 · 2026-01-28 13:15:53 +08:00 · 2026-01-28 13:15:53 +08:00 · 2026-01-28 13:15:53 +08:00 · 2026-01-28 13:15:53 +08:00 · 2026-01-28 13:15:53 +08:00
123 changed files with 7262 additions and 7108 deletions
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -10,6 +10,7 @@ if(BL_SDK_BASE)
    set(CONFIG_CHERRYUSB_DEVICE_MSC 1)
    set(CONFIG_CHERRYUSB_DEVICE_AUDIO 1)
    set(CONFIG_CHERRYUSB_DEVICE_VIDEO 1)
+    set(CONFIG_CHERRYUSB_DEVICE_GAMEPAD 1)

    set(CONFIG_CHERRYUSB_HOST_CDC_ACM 1)
    set(CONFIG_CHERRYUSB_HOST_CDC_ECM 1)
@@ -26,6 +27,7 @@ if(BL_SDK_BASE)
    set(CONFIG_CHERRYUSB_HOST_CP210X 1)
    set(CONFIG_CHERRYUSB_HOST_FTDI 1)
    set(CONFIG_CHERRYUSB_HOST_PL2303 1)
+    set(CONFIG_CHERRYUSB_HOST_GSM 1)

    set(CONFIG_CHERRYUSB_DEVICE_BL 1)
    set(CONFIG_CHERRYUSB_HOST_EHCI_BL 1)
@@ -139,6 +141,9 @@ elseif(ESP_PLATFORM)
        if(CONFIG_CHERRYUSB_HOST_PL2303)
            target_link_libraries(${COMPONENT_LIB} INTERFACE "-u pl2303_class_info")
        endif()
+        if(CONFIG_CHERRYUSB_HOST_GSM)
+            target_link_libraries(${COMPONENT_LIB} INTERFACE "-u gsm_class_info")
+        endif()
    endif()

    if(CONFIG_CHERRYUSB)
@@ -178,6 +183,7 @@ elseif(HPM_SDK_BASE)
    set(CONFIG_CHERRYUSB_DEVICE_MSC 1)
    set(CONFIG_CHERRYUSB_DEVICE_AUDIO 1)
    set(CONFIG_CHERRYUSB_DEVICE_VIDEO 1)
+    set(CONFIG_CHERRYUSB_DEVICE_GAMEPAD 1)

    set(CONFIG_CHERRYUSB_HOST_CDC_ACM 1)
    set(CONFIG_CHERRYUSB_HOST_CDC_ECM 1)
@@ -194,6 +200,7 @@ elseif(HPM_SDK_BASE)
    set(CONFIG_CHERRYUSB_HOST_CP210X 1)
    set(CONFIG_CHERRYUSB_HOST_FTDI 1)
    set(CONFIG_CHERRYUSB_HOST_PL2303 1)
+    set(CONFIG_CHERRYUSB_HOST_GSM 1)

    set(CONFIG_CHERRYUSB_DEVICE_HPM 1)
    set(CONFIG_CHERRYUSB_HOST_EHCI_HPM 1)
--- a/56
+++ b/56
@@ -10,7 +10,7 @@ if CHERRYUSB
        default n

    if CHERRYUSB_DEVICE
-        choice
+        choice CHERRYUSB_DEVICE_SPEED
            prompt "Select usb device speed"
            default CHERRYUSB_DEVICE_SPEED_FS
            config CHERRYUSB_DEVICE_SPEED_FS
@@ -21,7 +21,7 @@ if CHERRYUSB
                bool "AUTO"
        endchoice

-        choice
+        choice CHERRYUSB_DEVICE_IP
            prompt "Select usb device ip, and some ip need config in usb_config.h, please check"
            default CHERRYUSB_DEVICE_CUSTOM
            config CHERRYUSB_DEVICE_CUSTOM
@@ -36,6 +36,8 @@ if CHERRYUSB
                bool "dwc2_esp"
            config CHERRYUSB_DEVICE_DWC2_KENDRYTE
                bool "dwc2_kendryte"
+            config CHERRYUSB_DEVICE_DWC2_INFINEON
+                bool "dwc2_infineon"
            config CHERRYUSB_DEVICE_DWC2_AT
                bool "dwc2_at"
            config CHERRYUSB_DEVICE_DWC2_HC
@@ -159,7 +161,7 @@ if CHERRYUSB
            prompt "Enable usb cdc ecm device with lwip for lan"
            default n

-        choice
+        choice CHERRYUSB_DEVICE_TEMPLATE
            prompt "Select usb device template, please select class driver first"
            default CHERRYUSB_DEVICE_TEMPLATE_NONE
            config CHERRYUSB_DEVICE_TEMPLATE_NONE
@@ -239,7 +241,7 @@ if CHERRYUSB
        default n

    if CHERRYUSB_HOST
-        choice
+        choice CHERRYUSB_HOST_IP
            prompt "Select usb host ip, and some ip need config in usb_config.h, please check"
            default CHERRYUSB_HOST_CUSTOM
            config CHERRYUSB_HOST_CUSTOM
@@ -264,6 +266,10 @@ if CHERRYUSB
                bool "dwc2_esp"
            config CHERRYUSB_HOST_DWC2_KENDRYTE
                bool "dwc2_kendryte"
+            config CHERRYUSB_HOST_DWC2_INFINEON
+                bool "dwc2_infineon"
+            config CHERRYUSB_HOST_DWC2_AT
+                bool "dwc2_at, f405 only"
            config CHERRYUSB_HOST_DWC2_HC
                bool "dwc2_hc"
            config CHERRYUSB_HOST_DWC2_NATION
@@ -299,6 +305,7 @@ if CHERRYUSB
        config CHERRYUSB_HOST_CDC_ACM
            bool
            prompt "Enable usb cdc acm driver"
+            select USBHOST_SERIAL
            default n

        config CHERRYUSB_HOST_HID
@@ -360,21 +367,31 @@ if CHERRYUSB
        config CHERRYUSB_HOST_FTDI
            bool
            prompt "Enable usb ftdi driver"
+            select USBHOST_SERIAL
            default n

        config CHERRYUSB_HOST_CH34X
            bool
            prompt "Enable usb ch34x driver"
+            select USBHOST_SERIAL
            default n

        config CHERRYUSB_HOST_CP210X
            bool
            prompt "Enable usb cp210x driver"
+            select USBHOST_SERIAL
            default n

        config CHERRYUSB_HOST_PL2303
            bool
            prompt "Enable usb pl2303 driver"
+            select USBHOST_SERIAL
+            default n
+
+        config CHERRYUSB_HOST_GSM
+            bool
+            prompt "Enable usb gsm driver for 4g module"
+            select USBHOST_SERIAL
            default n

        config CHERRYUSB_HOST_AOA
@@ -382,6 +399,9 @@ if CHERRYUSB
            prompt "Enable usb aoa driver"
            default n

+        config USBHOST_SERIAL
+            bool
+
        config USBHOST_PLATFORM_CDC_ECM
            bool

@@ -417,22 +437,32 @@ if CHERRYUSB
            prompt "Set host control transfer timeout, unit is ms"
            default 500

+        config USBHOST_SERIAL_RX_SIZE
+            int
+            prompt "Set host serial rx max buffer size"
+            default 2048
+
        menu "Select USB host template, please select class driver first"
-            config TEST_USBH_CDC_ACM
-                int
-                prompt "demo for test cdc acm"
-                default 0
-                depends on CHERRYUSB_HOST_CDC_ACM
+            config TEST_USBH_SERIAL
+                bool
+                prompt "demo for test serial"
+                default n
+                depends on CHERRYUSB_HOST_CDC_ACM || CHERRYUSB_HOST_FTDI || CHERRYUSB_HOST_CH34X || CHERRYUSB_HOST_CP210X || CHERRYUSB_HOST_PL2303
            config TEST_USBH_HID
-                int
+                bool
                prompt "demo for test hid"
-                default 0
+                default n
                depends on CHERRYUSB_HOST_HID
            config TEST_USBH_MSC
-                int
+                bool
                prompt "demo for test msc"
-                default 0
+                default n
                depends on CHERRYUSB_HOST_MSC
+            config TEST_USBH_NET
+                bool
+                prompt "demo for test net, no demo for this, you can use lwip api to test"
+                default n
+                depends on CHERRYUSB_HOST_CDC_ECM || CHERRYUSB_HOST_CDC_RNDIS || CHERRYUSB_HOST_CDC_NCM || CHERRYUSB_HOST_ASIX || CHERRYUSB_HOST_RTL8152
        endmenu
    endif
 endif
--- a/Kconfig.rtt
+++ b/Kconfig.rtt
@@ -10,7 +10,7 @@ if RT_USING_CHERRYUSB
        default n

    if RT_CHERRYUSB_DEVICE
-        choice
+        choice CHERRYUSB_DEVICE_SPEED
            prompt "Select usb device speed"
            default RT_CHERRYUSB_DEVICE_SPEED_FS
            config RT_CHERRYUSB_DEVICE_SPEED_FS
@@ -21,7 +21,7 @@ if RT_USING_CHERRYUSB
                bool "AUTO"
        endchoice

-        choice
+        choice CHERRYUSB_DEVICE_IP
            prompt "Select usb device ip, and some ip need config in usb_config.h, please check"
            default RT_CHERRYUSB_DEVICE_CUSTOM
            config RT_CHERRYUSB_DEVICE_CUSTOM
@@ -36,6 +36,8 @@ if RT_USING_CHERRYUSB
                bool "dwc2_esp"
            config RT_CHERRYUSB_DEVICE_DWC2_KENDRYTE
                bool "dwc2_kendryte"
+            config RT_CHERRYUSB_DEVICE_DWC2_INFINEON
+                bool "dwc2_infineon"
            config RT_CHERRYUSB_DEVICE_DWC2_AT
                bool "dwc2_at"
            config RT_CHERRYUSB_DEVICE_DWC2_HC
@@ -165,7 +167,7 @@ if RT_USING_CHERRYUSB
            prompt "Enable usb cdc ecm device with lwip for lan"
            default n

-        choice
+        choice CHERRYUSB_DEVICE_TEMPLATE
            prompt "Select usb device template, please select class driver first"
            default RT_CHERRYUSB_DEVICE_TEMPLATE_NONE
            config RT_CHERRYUSB_DEVICE_TEMPLATE_NONE
@@ -263,7 +265,7 @@ if RT_USING_CHERRYUSB
        default n

    if RT_CHERRYUSB_HOST
-        choice
+        choice CHERRYUSB_HOST_IP
            prompt "Select usb host ip, and some ip need config in usb_config.h, please check"
            default RT_CHERRYUSB_HOST_CUSTOM
            config RT_CHERRYUSB_HOST_CUSTOM
@@ -288,6 +290,10 @@ if RT_USING_CHERRYUSB
                bool "dwc2_esp"
            config RT_CHERRYUSB_HOST_DWC2_KENDRYTE
                bool "dwc2_kendryte"
+            config RT_CHERRYUSB_HOST_DWC2_INFINEON
+                bool "dwc2_infineon"
+            config RT_CHERRYUSB_HOST_DWC2_AT
+                bool "dwc2_at, f405 only"
            config RT_CHERRYUSB_HOST_DWC2_HC
                bool "dwc2_hc"
            config RT_CHERRYUSB_HOST_DWC2_NATION
@@ -315,6 +321,7 @@ if RT_USING_CHERRYUSB
        config RT_CHERRYUSB_HOST_CDC_ACM
            bool
            prompt "Enable usb cdc acm driver"
+            select CONFIG_USBHOST_SERIAL
            default n

        config RT_CHERRYUSB_HOST_HID
@@ -382,23 +389,36 @@ if RT_USING_CHERRYUSB
        config RT_CHERRYUSB_HOST_FTDI
            bool
            prompt "Enable usb ftdi driver"
+            select CONFIG_USBHOST_SERIAL
            default n

        config RT_CHERRYUSB_HOST_CH34X
            bool
            prompt "Enable usb ch34x driver"
+            select CONFIG_USBHOST_SERIAL
            default n

        config RT_CHERRYUSB_HOST_CP210X
            bool
            prompt "Enable usb cp210x driver"
+            select CONFIG_USBHOST_SERIAL
            default n

        config RT_CHERRYUSB_HOST_PL2303
            bool
            prompt "Enable usb pl2303 driver"
+            select CONFIG_USBHOST_SERIAL
            default n

+        config RT_CHERRYUSB_HOST_GSM
+            bool
+            prompt "Enable usb gsm driver for 4g module"
+            select CONFIG_USBHOST_SERIAL
+            default n
+
+        config CONFIG_USBHOST_SERIAL
+            bool
+
        config CONFIG_USBHOST_PLATFORM_CDC_ECM
            bool

@@ -434,6 +454,11 @@ if RT_USING_CHERRYUSB
            prompt "Set host control transfer timeout, unit is ms"
            default 500

+        config CONFIG_USBHOST_SERIAL_RX_SIZE
+            int
+            prompt "Set host serial rx max buffer size"
+            default 2048
+
        config RT_LWIP_PBUF_POOL_BUFSIZE
            int "The size of each pbuf in the pbuf pool"
            range 1500 2000
@@ -445,21 +470,26 @@ if RT_USING_CHERRYUSB
            default "/"

        menu "Select USB host template, please select class driver first"
-            config CONFIG_TEST_USBH_CDC_ACM
-                int
-                prompt "demo for test cdc acm, cannot enable this demo, we have used serial framework instead"
-                default 0
-                depends on RT_CHERRYUSB_HOST_CDC_ACM
-            config CONFIG_TEST_USBH_HID
+            config RT_TEST_USBH_SERIAL
+                bool
+                prompt "demo for test seial, cannot enable this demo, you can use rt-thread device api to test"
+                default n
+                depends on CONFIG_USBHOST_SERIAL
+            config RT_TEST_USBH_HID
                int
                prompt "demo for test hid"
                default 0
                depends on RT_CHERRYUSB_HOST_HID
-            config CONFIG_TEST_USBH_MSC
-                int
-                prompt "demo for test msc, cannot enable this demo, we have used dfs instead"
-                default 0
+            config RT_TEST_USBH_MSC
+                bool
+                prompt "demo for test msc, cannot enable this demo, you can use rt-thread dfs api to test"
+                default n
                depends on RT_CHERRYUSB_HOST_MSC
+            config RT_TEST_USBH_NET
+                bool
+                prompt "demo for test net, cannot enable this demo, you can use lwip api to test"
+                default n
+                depends on RT_CHERRYUSB_HOST_CDC_ECM || RT_CHERRYUSB_HOST_CDC_RNDIS || RT_CHERRYUSB_HOST_CDC_NCM || RT_CHERRYUSB_HOST_ASIX || RT_CHERRYUSB_HOST_RTL8152
        endmenu
    endif
 endif
--- a/Kconfig.rttpkg
+++ b/Kconfig.rttpkg
@@ -11,7 +11,7 @@ if PKG_USING_CHERRYUSB
        default n

    if PKG_CHERRYUSB_DEVICE
-        choice
+        choice CHERRYUSB_DEVICE_SPEED
            prompt "Select usb device speed"
            default PKG_CHERRYUSB_DEVICE_SPEED_FS
            config PKG_CHERRYUSB_DEVICE_SPEED_FS
@@ -22,7 +22,7 @@ if PKG_USING_CHERRYUSB
                bool "AUTO"
        endchoice

-        choice
+        choice CHERRYUSB_DEVICE_IP
            prompt "Select usb device ip, and some ip need config in usb_config.h, please check"
            default PKG_CHERRYUSB_DEVICE_CUSTOM
            config PKG_CHERRYUSB_DEVICE_CUSTOM
@@ -37,6 +37,8 @@ if PKG_USING_CHERRYUSB
                bool "dwc2_esp"
            config PKG_CHERRYUSB_DEVICE_DWC2_KENDRYTE
                bool "dwc2_kendryte"
+            config PKG_CHERRYUSB_DEVICE_DWC2_INFINEON
+                bool "dwc2_infineon"
            config PKG_CHERRYUSB_DEVICE_DWC2_AT
                bool "dwc2_at"
            config PKG_CHERRYUSB_DEVICE_DWC2_HC
@@ -164,7 +166,7 @@ if PKG_USING_CHERRYUSB
            prompt "Enable usb cdc ecm device with lwip for lan"
            default n

-        choice
+        choice CHERRYUSB_DEVICE_TEMPLATE
            prompt "Select usb device template, please select class driver first"
            default PKG_CHERRYUSB_DEVICE_TEMPLATE_NONE
            config PKG_CHERRYUSB_DEVICE_TEMPLATE_NONE
@@ -262,7 +264,7 @@ if PKG_USING_CHERRYUSB
        default n

    if PKG_CHERRYUSB_HOST
-        choice
+        choice CHERRYUSB_HOST_IP
            prompt "Select usb host ip, and some ip need config in usb_config.h, please check"
            default PKG_CHERRYUSB_HOST_CUSTOM
            config PKG_CHERRYUSB_HOST_CUSTOM
@@ -287,6 +289,10 @@ if PKG_USING_CHERRYUSB
                bool "dwc2_esp"
            config PKG_CHERRYUSB_HOST_DWC2_KENDRYTE
                bool "dwc2_kendryte"
+            config PKG_CHERRYUSB_HOST_DWC2_INFINEON
+                bool "dwc2_infineon"
+            config PKG_CHERRYUSB_HOST_DWC2_AT
+                bool "dwc2_at, f405 only"
            config PKG_CHERRYUSB_HOST_DWC2_HC
                bool "dwc2_hc"
            config PKG_CHERRYUSB_HOST_DWC2_NATION
@@ -314,6 +320,7 @@ if PKG_USING_CHERRYUSB
        config PKG_CHERRYUSB_HOST_CDC_ACM
            bool
            prompt "Enable usb cdc acm driver"
+            select CONFIG_USBHOST_SERIAL
            default n

        config PKG_CHERRYUSB_HOST_HID
@@ -381,23 +388,36 @@ if PKG_USING_CHERRYUSB
        config PKG_CHERRYUSB_HOST_FTDI
            bool
            prompt "Enable usb ftdi driver"
+            select CONFIG_USBHOST_SERIAL
            default n

        config PKG_CHERRYUSB_HOST_CH34X
            bool
            prompt "Enable usb ch34x driver"
+            select CONFIG_USBHOST_SERIAL
            default n

        config PKG_CHERRYUSB_HOST_CP210X
            bool
            prompt "Enable usb cp210x driver"
+            select CONFIG_USBHOST_SERIAL
            default n

        config PKG_CHERRYUSB_HOST_PL2303
            bool
            prompt "Enable usb pl2303 driver"
+            select CONFIG_USBHOST_SERIAL
            default n

+        config PKG_CHERRYUSB_HOST_GSM
+            bool
+            prompt "Enable usb gsm driver for 4g module"
+            select CONFIG_USBHOST_SERIAL
+            default n
+
+        config CONFIG_USBHOST_SERIAL
+            bool
+
        config CONFIG_USBHOST_PLATFORM_CDC_ECM
            bool

@@ -433,6 +453,11 @@ if PKG_USING_CHERRYUSB
            prompt "Set host control transfer timeout, unit is ms"
            default 500

+        config CONFIG_USBHOST_SERIAL_RX_SIZE
+            int
+            prompt "Set host serial rx max buffer size"
+            default 2048
+
        config RT_LWIP_PBUF_POOL_BUFSIZE
            int "The size of each pbuf in the pbuf pool"
            range 1500 2000
@@ -444,21 +469,26 @@ if PKG_USING_CHERRYUSB
            default "/"

        menu "Select USB host template, please select class driver first"
-            config CONFIG_TEST_USBH_CDC_ACM
-                int
-                prompt "demo for test cdc acm, cannot enable this demo, we have used serial framework instead"
-                default 0
-                depends on PKG_CHERRYUSB_HOST_CDC_ACM
-            config CONFIG_TEST_USBH_HID
+            config PKG_TEST_USBH_SERIAL
+                bool
+                prompt "demo for test seial, cannot enable this demo, you can use rt-thread device api to test"
+                default n
+                depends on CONFIG_USBHOST_SERIAL
+            config PKG_TEST_USBH_HID
                int
                prompt "demo for test hid"
                default 0
                depends on PKG_CHERRYUSB_HOST_HID
-            config CONFIG_TEST_USBH_MSC
-                int
-                prompt "demo for test msc, cannot enable this demo, we have used dfs instead"
-                default 0
+            config PKG_TEST_USBH_MSC
+                bool
+                prompt "demo for test msc, cannot enable this demo, you can use rt-thread dfs api to test"
+                default n
                depends on PKG_CHERRYUSB_HOST_MSC
+            config PKG_TEST_USBH_NET
+                bool
+                prompt "demo for test net, cannot enable this demo, you can use lwip api to test"
+                default n
+                depends on PKG_CHERRYUSB_HOST_CDC_ECM || PKG_CHERRYUSB_HOST_CDC_RNDIS || PKG_CHERRYUSB_HOST_CDC_NCM || PKG_CHERRYUSB_HOST_ASIX || PKG_CHERRYUSB_HOST_RTL8152
        endmenu
    endif

@@ -474,12 +504,12 @@ if PKG_USING_CHERRYUSB

        config PKG_USING_CHERRYUSB_LATEST_VERSION
            bool "latest"
+        config PKG_USING_CHERRYUSB_V010600
+            bool "v1.6.0"
        config PKG_USING_CHERRYUSB_V010503
-            bool "v1.5.3"
+            bool "v1.5.3.99"
        config PKG_USING_CHERRYUSB_V010502
            bool "v1.5.2"
-        config PKG_USING_CHERRYUSB_V010501
-            bool "v1.5.1"
        config PKG_USING_CHERRYUSB_V010500
            bool "v1.5.0"
        config PKG_USING_CHERRYUSB_V010403
@@ -495,9 +525,9 @@ if PKG_USING_CHERRYUSB
    config PKG_CHERRYUSB_VER
       string
       default "latest"    if PKG_USING_CHERRYUSB_LATEST_VERSION
-       default "v1.5.3"   if PKG_USING_CHERRYUSB_V010503
+       default "v1.6.0"   if PKG_USING_CHERRYUSB_V010600
+       default "v1.5.3.99"   if PKG_USING_CHERRYUSB_V010503
       default "v1.5.2"   if PKG_USING_CHERRYUSB_V010502
-       default "v1.5.1"   if PKG_USING_CHERRYUSB_V010501
       default "v1.5.0"   if PKG_USING_CHERRYUSB_V010500
       default "v1.4.3"   if PKG_USING_CHERRYUSB_V010403
       default "v1.3.1"   if PKG_USING_CHERRYUSB_V010301
--- a/README.md
+++ b/README.md
@@ -112,7 +112,8 @@ CherryUSB Host Stack has the following functions:
 - Support USB Audio CLASS (UAC1.0)
 - Support Remote NDIS (RNDIS)
 - Support USB Bluetooth class (support nimble and zephyr bluetooth stack, support **CLASS:0xE0** or vendor class like cdc acm)
- Support Vendor class (serial, net, wifi)
+- Support Vendor Serial Class(CH34X、CP210X、PL2303、FTDI、GSM)
+- Support Vendor network Class(RTL8152、AX88772)
 - Support USB modeswitch
 - Support Android Open Accessory
 - Support multi host with the same USB IP
@@ -150,7 +151,7 @@ Among them, `sizeof(struct usbh_hub)` and `sizeof(struct usbh_hubport)` are affe
 x is affected by the following macros:

 ```
-#define CONFIG_USBHOST_MAX_CDC_ACM_CLASS 4
+#define CONFIG_USBHOST_MAX_SERIAL_CLASS  4
 #define CONFIG_USBHOST_MAX_HID_CLASS     4
 #define CONFIG_USBHOST_MAX_MSC_CLASS     2
 #define CONFIG_USBHOST_MAX_AUDIO_CLASS   1
@@ -181,11 +182,11 @@ Quickly start, USB basic concepts, API manual, Class basic concepts and examples

 ## Video Tutorial

-CherryUSB Cheese (based V1.4.3): https://www.bilibili.com/cheese/play/ss707687201 .
+CherryUSB Cheese (>= V1.4.3): https://www.bilibili.com/cheese/play/ss707687201 .

 ## Descriptor Generator Tool

-TODO
+Cherry Descriptor: https://desc.cherry-embedded.org/en

 ## Demo Repo

--- a/README_zh.md
+++ b/README_zh.md
@@ -112,7 +112,8 @@ CherryUSB Host 协议栈当前实现以下功能：
 - Support USB Audio CLASS (UAC1.0)
 - 支持 Remote NDIS (RNDIS)
 - 支持 USB Bluetooth (支持 nimble and zephyr bluetooth 协议栈，支持 **CLASS: 0xE0** 或者厂家自定义类，类似于 cdc acm 功能)
- 支持 Vendor 类 class (serial, net, wifi)
+- 支持 Vendor Serial 类(CH34X、CP210X、PL2303、FTDI、GSM)
+- 支持 Vendor network 类(RTL8152、AX88772)
 - 支持 USB modeswitch
 - 支持 Android Open Accessory
 - 支持相同 USB IP 的多主机
@@ -150,7 +151,7 @@ CherryUSB Host 协议栈资源占用说明（GCC 10.2 with -O2，关闭 log）
 x 受以下宏影响：

 ```
-#define CONFIG_USBHOST_MAX_CDC_ACM_CLASS 4
+#define CONFIG_USBHOST_MAX_SERIAL_CLASS  4
 #define CONFIG_USBHOST_MAX_HID_CLASS     4
 #define CONFIG_USBHOST_MAX_MSC_CLASS     2
 #define CONFIG_USBHOST_MAX_AUDIO_CLASS   1
@@ -181,11 +182,11 @@ CherryUSB 快速入门、USB 基本概念、API 手册、Class 基本概念和

 ## 视频教程

-CherryUSB 课程（基于 V1.4.3）：https://www.bilibili.com/cheese/play/ss707687201 。
+CherryUSB 课程（>= V1.4.3）：https://www.bilibili.com/cheese/play/ss707687201 。

 ## 描述符生成工具

-TODO
+Cherry Descriptor: https://desc.cherry-embedded.org/zh

 ## 示例仓库

--- a/38
+++ b/38
@@ -14,9 +14,8 @@ path += [cwd + '/class/wireless']
 path += [cwd + '/class/midi']
 path += [cwd + '/class/adb']
 path += [cwd + '/class/dfu']
-path += [cwd + '/class/midi']
+path += [cwd + '/class/serial']
 path += [cwd + '/class/vendor/net']
-path += [cwd + '/class/vendor/serial']
 path += [cwd + '/class/vendor/wifi']
 src = []

@@ -47,6 +46,9 @@ if GetDepend(['PKG_CHERRYUSB_DEVICE']):
    if GetDepend(['PKG_CHERRYUSB_DEVICE_DWC2_KENDRYTE']):
        src += Glob('port/dwc2/usb_dc_dwc2.c')
        src += Glob('port/dwc2/usb_glue_kendryte.c')
+    if GetDepend(['PKG_CHERRYUSB_DEVICE_DWC2_INFINEON']):
+        src += Glob('port/dwc2/usb_dc_dwc2.c')
+        src += Glob('port/dwc2/usb_glue_infineon.c')
    if GetDepend(['PKG_CHERRYUSB_DEVICE_DWC2_AT']):
        src += Glob('port/dwc2/usb_dc_dwc2.c')
        src += Glob('port/dwc2/usb_glue_at.c')
@@ -112,6 +114,9 @@ if GetDepend(['PKG_CHERRYUSB_DEVICE']):
            LIBS = ['libpusb2_dc_a32_softfp_neon.a']
    if GetDepend(['PKG_CHERRYUSB_DEVICE_NRF5X']):
        src += Glob('port/nrf5x/usb_dc_nrf5x.c')
+    if GetDepend(['PKG_CHERRYUSB_DEVICE_RP2040']):
+        path += [cwd + '/port/rp2040']
+        src += Glob('port/rp2040/usb_dc_rp2040.c')

    if GetDepend(['PKG_CHERRYUSB_DEVICE_CDC_ACM']):
        src += Glob('class/cdc/usbd_cdc_acm.c')
@@ -218,6 +223,12 @@ if GetDepend(['PKG_CHERRYUSB_HOST']):
    if GetDepend(['PKG_CHERRYUSB_HOST_DWC2_KENDRYTE']):
        src += Glob('port/dwc2/usb_hc_dwc2.c')
        src += Glob('port/dwc2/usb_glue_kendryte.c')
+    if GetDepend(['PKG_CHERRYUSB_HOST_DWC2_INFINEON']):
+        src += Glob('port/dwc2/usb_hc_dwc2.c')
+        src += Glob('port/dwc2/usb_glue_infineon.c')
+    if GetDepend(['PKG_CHERRYUSB_HOST_DWC2_AT']):
+        src += Glob('port/dwc2/usb_hc_dwc2.c')
+        src += Glob('port/dwc2/usb_glue_at.c')
    if GetDepend(['PKG_CHERRYUSB_HOST_DWC2_HC']):
        src += Glob('port/dwc2/usb_hc_dwc2.c')
        src += Glob('port/dwc2/usb_glue_hc.c')
@@ -268,8 +279,12 @@ if GetDepend(['PKG_CHERRYUSB_HOST']):
            LIBPATH = [cwd + '/port/xhci/phytium']
            LIBS = ['libxhci_a32_softfp_neon.a']

+    if GetDepend(['PKG_CHERRYUSB_HOST_RP2040']):
+        path += [cwd + '/port/rp2040']
+        src += Glob('port/rp2040/usb_hc_rp2040.c')
+
    if GetDepend(['PKG_CHERRYUSB_HOST_CDC_ACM']):
-        src += Glob('class/cdc/usbh_cdc_acm.c')
+        src += Glob('class/serial/usbh_cdc_acm.c')
    if GetDepend(['PKG_CHERRYUSB_HOST_HID']):
        src += Glob('class/hid/usbh_hid.c')
    if GetDepend(['PKG_CHERRYUSB_HOST_MSC']):
@@ -291,23 +306,26 @@ if GetDepend(['PKG_CHERRYUSB_HOST']):
    if GetDepend(['PKG_CHERRYUSB_HOST_RTL8152']):
        src += Glob('class/vendor/net/usbh_rtl8152.c')
    if GetDepend(['PKG_CHERRYUSB_HOST_FTDI']):
-        src += Glob('class/vendor/serial/usbh_ftdi.c')
+        src += Glob('class/serial/usbh_ftdi.c')
    if GetDepend(['PKG_CHERRYUSB_HOST_CH34X']):
-        src += Glob('class/vendor/serial/usbh_ch34x.c')
+        src += Glob('class/serial/usbh_ch34x.c')
    if GetDepend(['PKG_CHERRYUSB_HOST_CP210X']):
-        src += Glob('class/vendor/serial/usbh_cp210x.c')
+        src += Glob('class/serial/usbh_cp210x.c')
    if GetDepend(['PKG_CHERRYUSB_HOST_PL2303']):
-        src += Glob('class/vendor/serial/usbh_pl2303.c')
+        src += Glob('class/serial/usbh_pl2303.c')

-    if GetDepend(['CONFIG_TEST_USBH_HID']):
+    if GetDepend(['PKG_TEST_USBH_HID']):
+        CPPDEFINES+=['CONFIG_TEST_USBH_HID']
        src += Glob('demo/usb_host.c')

    if GetDepend(['PKG_CHERRYUSB_HOST_CDC_ACM'])    \
        or GetDepend(['PKG_CHERRYUSB_HOST_FTDI'])   \
        or GetDepend(['PKG_CHERRYUSB_HOST_CH34X'])  \
        or GetDepend(['PKG_CHERRYUSB_HOST_CP210X']) \
-        or GetDepend(['PKG_CHERRYUSB_HOST_PL2303']):
-        src += Glob('platform/rtthread/usbh_serial.c')
+        or GetDepend(['PKG_CHERRYUSB_HOST_PL2303']) \
+        or GetDepend(['PKG_CHERRYUSB_HOST_GSM']):
+        src += Glob('class/serial/usbh_serial.c')
+        src += Glob('platform/rtthread/usbh_rtserial.c')

    if GetDepend('RT_USING_DFS') and GetDepend(['PKG_CHERRYUSB_HOST_MSC']):
       src += Glob('platform/rtthread/usbh_dfs.c')
--- a/6
+++ b/6
@@ -1,5 +1,5 @@
 VERSION_MAJOR = 1
-VERSION_MINOR = 5
-PATCHLEVEL = 3
-VERSION_TWEAK = 99
+VERSION_MINOR = 6
+PATCHLEVEL = 0
+VERSION_TWEAK = 0
 EXTRAVERSION = 0
--- a/cherryusb.cmake
+++ b/cherryusb.cmake
@@ -47,10 +47,11 @@ list(
    ${CMAKE_CURRENT_LIST_DIR}/class/midi
    ${CMAKE_CURRENT_LIST_DIR}/class/adb
    ${CMAKE_CURRENT_LIST_DIR}/class/dfu
+    ${CMAKE_CURRENT_LIST_DIR}/class/serial
    ${CMAKE_CURRENT_LIST_DIR}/class/vendor/net
-    ${CMAKE_CURRENT_LIST_DIR}/class/vendor/serial
    ${CMAKE_CURRENT_LIST_DIR}/class/vendor/wifi
    ${CMAKE_CURRENT_LIST_DIR}/class/aoa
+    ${CMAKE_CURRENT_LIST_DIR}/class/gamepad
 )

 if(CONFIG_CHERRYUSB_DEVICE)
@@ -85,6 +86,9 @@ if(CONFIG_CHERRYUSB_DEVICE)
    if(CONFIG_CHERRYUSB_DEVICE_ADB)
        list(APPEND cherryusb_srcs ${CMAKE_CURRENT_LIST_DIR}/class/adb/usbd_adb.c)
    endif()
+    if(CONFIG_CHERRYUSB_DEVICE_GAMEPAD)
+        list(APPEND cherryusb_srcs ${CMAKE_CURRENT_LIST_DIR}/class/gamepad/usbd_gamepad.c)
+    endif()

    if(CONFIG_CHERRYUSB_DEVICE_FSDEV_ST)
        list(APPEND cherryusb_srcs ${CMAKE_CURRENT_LIST_DIR}/port/fsdev/usb_dc_fsdev.c)
@@ -156,7 +160,7 @@ if(CONFIG_CHERRYUSB_HOST)
    )

    if(CONFIG_CHERRYUSB_HOST_CDC_ACM)
-        list(APPEND cherryusb_srcs ${CMAKE_CURRENT_LIST_DIR}/class/cdc/usbh_cdc_acm.c)
+        list(APPEND cherryusb_srcs ${CMAKE_CURRENT_LIST_DIR}/class/serial/usbh_cdc_acm.c)
    endif()
    if(CONFIG_CHERRYUSB_HOST_CDC_ECM)
        list(APPEND cherryusb_srcs ${CMAKE_CURRENT_LIST_DIR}/class/cdc/usbh_cdc_ecm.c)
@@ -235,21 +239,34 @@ if(CONFIG_CHERRYUSB_HOST)
        list(APPEND cherryusb_srcs ${CMAKE_CURRENT_LIST_DIR}/class/vendor/net/usbh_rtl8152.c)
    endif()
    if(CONFIG_CHERRYUSB_HOST_CH34X)
-        list(APPEND cherryusb_srcs ${CMAKE_CURRENT_LIST_DIR}/class/vendor/serial/usbh_ch34x.c)
+        list(APPEND cherryusb_srcs ${CMAKE_CURRENT_LIST_DIR}/class/serial/usbh_ch34x.c)
    endif()
    if(CONFIG_CHERRYUSB_HOST_CP210X)
-        list(APPEND cherryusb_srcs ${CMAKE_CURRENT_LIST_DIR}/class/vendor/serial/usbh_cp210x.c)
+        list(APPEND cherryusb_srcs ${CMAKE_CURRENT_LIST_DIR}/class/serial/usbh_cp210x.c)
    endif()
    if(CONFIG_CHERRYUSB_HOST_FTDI)
-        list(APPEND cherryusb_srcs ${CMAKE_CURRENT_LIST_DIR}/class/vendor/serial/usbh_ftdi.c)
+        list(APPEND cherryusb_srcs ${CMAKE_CURRENT_LIST_DIR}/class/serial/usbh_ftdi.c)
    endif()
    if(CONFIG_CHERRYUSB_HOST_PL2303)
-        list(APPEND cherryusb_srcs ${CMAKE_CURRENT_LIST_DIR}/class/vendor/serial/usbh_pl2303.c)
+        list(APPEND cherryusb_srcs ${CMAKE_CURRENT_LIST_DIR}/class/serial/usbh_pl2303.c)
+    endif()
+    if(CONFIG_CHERRYUSB_HOST_GSM)
+        list(APPEND cherryusb_srcs ${CMAKE_CURRENT_LIST_DIR}/class/serial/usbh_gsm.c)
    endif()
    if(CONFIG_CHERRYUSB_HOST_AOA)
        list(APPEND cherryusb_srcs ${CMAKE_CURRENT_LIST_DIR}/class/aoa/usbh_aoa.c)
    endif()

+    if(CONFIG_CHERRYUSB_HOST_CDC_ACM
+    OR CONFIG_CHERRYUSB_HOST_CH34X
+    OR CONFIG_CHERRYUSB_HOST_CP210X
+    OR CONFIG_CHERRYUSB_HOST_FTDI
+    OR CONFIG_CHERRYUSB_HOST_PL2303
+    OR CONFIG_CHERRYUSB_HOST_GSM
+    )
+        list(APPEND cherryusb_srcs ${CMAKE_CURRENT_LIST_DIR}/class/serial/usbh_serial.c)
+    endif()
+
    if(CONFIG_CHERRYUSB_HOST_CDC_ECM
    OR CONFIG_CHERRYUSB_HOST_CDC_RNDIS
    OR CONFIG_CHERRYUSB_HOST_CDC_NCM
@@ -331,7 +348,7 @@ if(CONFIG_CHERRYUSB_HOST)
        list(APPEND cherryusb_srcs ${CMAKE_CURRENT_LIST_DIR}/port/rp2040/usb_hc_rp2040.c)
    endif()

-    if(CONFIG_TEST_USBH_CDC_ACM OR CONFIG_TEST_USBH_HID OR CONFIG_TEST_USBH_MSC)
+    if(CONFIG_TEST_USBH_SERIAL OR CONFIG_TEST_USBH_HID OR CONFIG_TEST_USBH_MSC)
        list(APPEND cherryusb_srcs ${CMAKE_CURRENT_LIST_DIR}/demo/usb_host.c)
    endif()
 endif()
--- a/cherryusb_config_template.h
+++ b/cherryusb_config_template.h
@@ -157,7 +157,7 @@
 #define CONFIG_USBHOST_MAX_INTF_ALTSETTINGS 2
 #define CONFIG_USBHOST_MAX_ENDPOINTS        4

-#define CONFIG_USBHOST_MAX_CDC_ACM_CLASS 4
+#define CONFIG_USBHOST_MAX_SERIAL_CLASS  4
 #define CONFIG_USBHOST_MAX_HID_CLASS     4
 #define CONFIG_USBHOST_MAX_MSC_CLASS     2
 #define CONFIG_USBHOST_MAX_AUDIO_CLASS   1
@@ -188,6 +188,10 @@
 #define CONFIG_USBHOST_CONTROL_TRANSFER_TIMEOUT 500
 #endif

+#ifndef CONFIG_USBHOST_SERIAL_RX_SIZE
+#define CONFIG_USBHOST_SERIAL_RX_SIZE 2048
+#endif
+
 #ifndef CONFIG_USBHOST_MSC_TIMEOUT
 #define CONFIG_USBHOST_MSC_TIMEOUT 5000
 #endif
--- a/class/cdc/usb_cdc.h
+++ b/class/cdc/usb_cdc.h
@@ -217,12 +217,12 @@
 #define CDC_SERIAL_STATE_BREAK          (1 << 2) /* state of break detection */
 #define CDC_SERIAL_STATE_BREAK_Pos      (2)
 #define CDC_SERIAL_STATE_BREAK_Msk      (1 << CDC_SERIAL_STATE_BREAK_Pos)
-#define CDC_SERIAL_STATE_TX_CARRIER     (1 << 1) /* state of transmission carrier */
-#define CDC_SERIAL_STATE_TX_CARRIER_Pos (1)
-#define CDC_SERIAL_STATE_TX_CARRIER_Msk (1 << CDC_SERIAL_STATE_TX_CARRIER_Pos)
-#define CDC_SERIAL_STATE_RX_CARRIER     (1 << 0) /* state of receiver carrier */
-#define CDC_SERIAL_STATE_RX_CARRIER_Pos (0)
-#define CDC_SERIAL_STATE_RX_CARRIER_Msk (1 << CDC_SERIAL_STATE_RX_CARRIER_Pos)
+#define CDC_SERIAL_STATE_DSR            (1 << 1) /* state of transmission carrier */
+#define CDC_SERIAL_STATE_DSR_Pos        (1)
+#define CDC_SERIAL_STATE_DSR_Msk        (1 << CDC_SERIAL_STATE_DSR_Pos)
+#define CDC_SERIAL_STATE_DCD            (1 << 0) /* state of receiver carrier */
+#define CDC_SERIAL_STATE_DCD_Pos        (0)
+#define CDC_SERIAL_STATE_DCD_Msk        (1 << CDC_SERIAL_STATE_DCD_Pos)

 #define CDC_ECM_XMIT_OK                                     (1 << 0)
 #define CDC_ECM_RVC_OK                                      (1 << 1)
--- a/class/cdc/usbh_cdc_acm.c
+++ b/class/cdc/usbh_cdc_acm.c
@@ -1,294 +0,0 @@
-/*
- * Copyright (c) 2022, sakumisu
- *
- * SPDX-License-Identifier: Apache-2.0
- */
-#include "usbh_core.h"
-#include "usbh_cdc_acm.h"
-
-#undef USB_DBG_TAG
-#define USB_DBG_TAG "usbh_cdc_acm"
-#include "usb_log.h"
-
-#define DEV_FORMAT "/dev/ttyACM%d"
-
-USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t g_cdc_acm_buf[CONFIG_USBHOST_MAX_CDC_ACM_CLASS][USB_ALIGN_UP(64, CONFIG_USB_ALIGN_SIZE)];
-
-static struct usbh_cdc_acm g_cdc_acm_class[CONFIG_USBHOST_MAX_CDC_ACM_CLASS];
-static uint32_t g_devinuse = 0;
-
-static struct usbh_cdc_acm *usbh_cdc_acm_class_alloc(void)
-{
-    uint8_t devno;
-
-    for (devno = 0; devno < CONFIG_USBHOST_MAX_CDC_ACM_CLASS; devno++) {
-        if ((g_devinuse & (1U << devno)) == 0) {
-            g_devinuse |= (1U << devno);
-            memset(&g_cdc_acm_class[devno], 0, sizeof(struct usbh_cdc_acm));
-            g_cdc_acm_class[devno].minor = devno;
-            return &g_cdc_acm_class[devno];
-        }
-    }
-    return NULL;
-}
-
-static void usbh_cdc_acm_class_free(struct usbh_cdc_acm *cdc_acm_class)
-{
-    uint8_t devno = cdc_acm_class->minor;
-
-    if (devno < 32) {
-        g_devinuse &= ~(1U << devno);
-    }
-    memset(cdc_acm_class, 0, sizeof(struct usbh_cdc_acm));
-}
-
-int usbh_cdc_acm_set_line_coding(struct usbh_cdc_acm *cdc_acm_class, struct cdc_line_coding *line_coding)
-{
-    struct usb_setup_packet *setup;
-
-    if (!cdc_acm_class || !cdc_acm_class->hport) {
-        return -USB_ERR_INVAL;
-    }
-    setup = cdc_acm_class->hport->setup;
-
-    setup->bmRequestType = USB_REQUEST_DIR_OUT | USB_REQUEST_CLASS | USB_REQUEST_RECIPIENT_INTERFACE;
-    setup->bRequest = CDC_REQUEST_SET_LINE_CODING;
-    setup->wValue = 0;
-    setup->wIndex = cdc_acm_class->intf;
-    setup->wLength = 7;
-
-    memcpy(g_cdc_acm_buf[cdc_acm_class->minor], line_coding, sizeof(struct cdc_line_coding));
-
-    return usbh_control_transfer(cdc_acm_class->hport, setup, g_cdc_acm_buf[cdc_acm_class->minor]);
-}
-
-int usbh_cdc_acm_get_line_coding(struct usbh_cdc_acm *cdc_acm_class, struct cdc_line_coding *line_coding)
-{
-    struct usb_setup_packet *setup;
-    int ret;
-
-    if (!cdc_acm_class || !cdc_acm_class->hport) {
-        return -USB_ERR_INVAL;
-    }
-    setup = cdc_acm_class->hport->setup;
-
-    setup->bmRequestType = USB_REQUEST_DIR_IN | USB_REQUEST_CLASS | USB_REQUEST_RECIPIENT_INTERFACE;
-    setup->bRequest = CDC_REQUEST_GET_LINE_CODING;
-    setup->wValue = 0;
-    setup->wIndex = cdc_acm_class->intf;
-    setup->wLength = 7;
-
-    ret = usbh_control_transfer(cdc_acm_class->hport, setup, g_cdc_acm_buf[cdc_acm_class->minor]);
-    if (ret < 0) {
-        return ret;
-    }
-    memcpy(line_coding, g_cdc_acm_buf[cdc_acm_class->minor], sizeof(struct cdc_line_coding));
-    return ret;
-}
-
-int usbh_cdc_acm_set_line_state(struct usbh_cdc_acm *cdc_acm_class, bool dtr, bool rts)
-{
-    struct usb_setup_packet *setup;
-
-    if (!cdc_acm_class || !cdc_acm_class->hport) {
-        return -USB_ERR_INVAL;
-    }
-    setup = cdc_acm_class->hport->setup;
-
-    setup->bmRequestType = USB_REQUEST_DIR_OUT | USB_REQUEST_CLASS | USB_REQUEST_RECIPIENT_INTERFACE;
-    setup->bRequest = CDC_REQUEST_SET_CONTROL_LINE_STATE;
-    setup->wValue = (dtr << 0) | (rts << 1);
-    setup->wIndex = cdc_acm_class->intf;
-    setup->wLength = 0;
-
-    return usbh_control_transfer(cdc_acm_class->hport, setup, NULL);
-}
-
-static int usbh_cdc_acm_connect(struct usbh_hubport *hport, uint8_t intf)
-{
-    struct usb_endpoint_descriptor *ep_desc;
-    int ret = 0;
-
-    struct usbh_cdc_acm *cdc_acm_class = usbh_cdc_acm_class_alloc();
-    if (cdc_acm_class == NULL) {
-        USB_LOG_ERR("Fail to alloc cdc_acm_class\r\n");
-        return -USB_ERR_NOMEM;
-    }
-
-    cdc_acm_class->hport = hport;
-    cdc_acm_class->intf = intf;
-
-    hport->config.intf[intf].priv = cdc_acm_class;
-    hport->config.intf[intf + 1].priv = NULL;
-
-#ifdef CONFIG_USBHOST_CDC_ACM_NOTIFY
-    ep_desc = &hport->config.intf[intf].altsetting[0].ep[0].ep_desc;
-    USBH_EP_INIT(cdc_acm_class->intin, ep_desc);
-#endif
-    for (uint8_t i = 0; i < hport->config.intf[intf + 1].altsetting[0].intf_desc.bNumEndpoints; i++) {
-        ep_desc = &hport->config.intf[intf + 1].altsetting[0].ep[i].ep_desc;
-
-        if (ep_desc->bEndpointAddress & 0x80) {
-            USBH_EP_INIT(cdc_acm_class->bulkin, ep_desc);
-        } else {
-            USBH_EP_INIT(cdc_acm_class->bulkout, ep_desc);
-        }
-    }
-
-    snprintf(hport->config.intf[intf].devname, CONFIG_USBHOST_DEV_NAMELEN, DEV_FORMAT, cdc_acm_class->minor);
-
-    USB_LOG_INFO("Register CDC ACM Class:%s\r\n", hport->config.intf[intf].devname);
-
-#if 0
-    USB_LOG_INFO("Test cdc acm rx and tx and rx for 5 times, baudrate is 115200\r\n");
-
-    struct cdc_line_coding linecoding;
-    uint8_t count = 5;
-
-    linecoding.dwDTERate = 115200;
-    linecoding.bDataBits = 8;
-    linecoding.bParityType = 0;
-    linecoding.bCharFormat = 0;
-    usbh_cdc_acm_set_line_coding(cdc_acm_class, &linecoding);
-    usbh_cdc_acm_set_line_state(cdc_acm_class, true, false);
-
-    memset(g_cdc_acm_buf, 'a', sizeof(g_cdc_acm_buf));
-    ret = usbh_cdc_acm_bulk_out_transfer(cdc_acm_class, g_cdc_acm_buf, sizeof(g_cdc_acm_buf), 0xfffffff);
-    USB_LOG_RAW("out ret:%d\r\n", ret);
-    while (count--) {
-        ret = usbh_cdc_acm_bulk_in_transfer(cdc_acm_class, g_cdc_acm_buf, sizeof(g_cdc_acm_buf), 0xfffffff);
-        USB_LOG_RAW("in ret:%d\r\n", ret);
-        if (ret > 0) {
-            for (uint32_t i = 0; i < ret; i++) {
-                USB_LOG_RAW("%02x ", g_cdc_acm_buf[i]);
-            }
-        }
-        USB_LOG_RAW("\r\n");
-    }
-#endif
-
-    usbh_cdc_acm_run(cdc_acm_class);
-    return ret;
-}
-
-static int usbh_cdc_acm_disconnect(struct usbh_hubport *hport, uint8_t intf)
-{
-    int ret = 0;
-
-    struct usbh_cdc_acm *cdc_acm_class = (struct usbh_cdc_acm *)hport->config.intf[intf].priv;
-
-    if (cdc_acm_class) {
-        if (cdc_acm_class->bulkin) {
-            usbh_kill_urb(&cdc_acm_class->bulkin_urb);
-        }
-
-        if (cdc_acm_class->bulkout) {
-            usbh_kill_urb(&cdc_acm_class->bulkout_urb);
-        }
-
-#ifdef CONFIG_USBHOST_CDC_ACM_NOTIFY
-        if (cdc_acm_class->intin) {
-            usbh_kill_urb(&cdc_acm_class->intin_urb);
-        }
-#endif
-
-        if (hport->config.intf[intf].devname[0] != '\0') {
-            usb_osal_thread_schedule_other();
-            USB_LOG_INFO("Unregister CDC ACM Class:%s\r\n", hport->config.intf[intf].devname);
-            usbh_cdc_acm_stop(cdc_acm_class);
-        }
-
-        usbh_cdc_acm_class_free(cdc_acm_class);
-    }
-
-    return ret;
-}
-
-int usbh_cdc_acm_bulk_in_transfer(struct usbh_cdc_acm *cdc_acm_class, uint8_t *buffer, uint32_t buflen, uint32_t timeout)
-{
-    int ret;
-    struct usbh_urb *urb = &cdc_acm_class->bulkin_urb;
-
-    usbh_bulk_urb_fill(urb, cdc_acm_class->hport, cdc_acm_class->bulkin, buffer, buflen, timeout, NULL, NULL);
-    ret = usbh_submit_urb(urb);
-    if (ret == 0) {
-        ret = urb->actual_length;
-    }
-    return ret;
-}
-
-int usbh_cdc_acm_bulk_out_transfer(struct usbh_cdc_acm *cdc_acm_class, uint8_t *buffer, uint32_t buflen, uint32_t timeout)
-{
-    int ret;
-    struct usbh_urb *urb = &cdc_acm_class->bulkout_urb;
-
-    usbh_bulk_urb_fill(urb, cdc_acm_class->hport, cdc_acm_class->bulkout, buffer, buflen, timeout, NULL, NULL);
-    ret = usbh_submit_urb(urb);
-    if (ret == 0) {
-        ret = urb->actual_length;
-    }
-    return ret;
-}
-
-static int usbh_cdc_data_connect(struct usbh_hubport *hport, uint8_t intf)
-{
-    (void)hport;
-    (void)intf;
-    return 0;
-}
-
-static int usbh_cdc_data_disconnect(struct usbh_hubport *hport, uint8_t intf)
-{
-    (void)hport;
-    (void)intf;
-    return 0;
-}
-
-__WEAK void usbh_cdc_acm_run(struct usbh_cdc_acm *cdc_acm_class)
-{
-    (void)cdc_acm_class;
-}
-
-__WEAK void usbh_cdc_acm_stop(struct usbh_cdc_acm *cdc_acm_class)
-{
-    (void)cdc_acm_class;
-}
-
-const struct usbh_class_driver cdc_acm_class_driver = {
-    .driver_name = "cdc_acm",
-    .connect = usbh_cdc_acm_connect,
-    .disconnect = usbh_cdc_acm_disconnect
-};
-
-const struct usbh_class_driver cdc_data_class_driver = {
-    .driver_name = "cdc_data",
-    .connect = usbh_cdc_data_connect,
-    .disconnect = usbh_cdc_data_disconnect
-};
-
-CLASS_INFO_DEFINE const struct usbh_class_info cdc_acm_none_class_info = {
-    .match_flags = USB_CLASS_MATCH_INTF_CLASS | USB_CLASS_MATCH_INTF_SUBCLASS | USB_CLASS_MATCH_INTF_PROTOCOL,
-    .bInterfaceClass = USB_DEVICE_CLASS_CDC,
-    .bInterfaceSubClass = CDC_ABSTRACT_CONTROL_MODEL,
-    .bInterfaceProtocol = CDC_COMMON_PROTOCOL_NONE,
-    .id_table = NULL,
-    .class_driver = &cdc_acm_class_driver
-};
-
-CLASS_INFO_DEFINE const struct usbh_class_info cdc_acm_at_class_info = {
-    .match_flags = USB_CLASS_MATCH_INTF_CLASS | USB_CLASS_MATCH_INTF_SUBCLASS | USB_CLASS_MATCH_INTF_PROTOCOL,
-    .bInterfaceClass = USB_DEVICE_CLASS_CDC,
-    .bInterfaceSubClass = CDC_ABSTRACT_CONTROL_MODEL,
-    .bInterfaceProtocol = CDC_COMMON_PROTOCOL_AT_COMMANDS,
-    .id_table = NULL,
-    .class_driver = &cdc_acm_class_driver
-};
-
-CLASS_INFO_DEFINE const struct usbh_class_info cdc_data_class_info = {
-    .match_flags = USB_CLASS_MATCH_INTF_CLASS,
-    .bInterfaceClass = USB_DEVICE_CLASS_CDC_DATA,
-    .bInterfaceSubClass = 0x00,
-    .bInterfaceProtocol = 0x00,
-    .id_table = NULL,
-    .class_driver = &cdc_data_class_driver
-};
--- a/class/cdc/usbh_cdc_acm.h
+++ b/class/cdc/usbh_cdc_acm.h
@@ -1,50 +0,0 @@
-/*
- * Copyright (c) 2022, sakumisu
- *
- * SPDX-License-Identifier: Apache-2.0
- */
-#ifndef USBH_CDC_ACM_H
-#define USBH_CDC_ACM_H
-
-#include "usb_cdc.h"
-
-struct usbh_cdc_acm {
-    struct usbh_hubport *hport;
-    struct usb_endpoint_descriptor *bulkin;  /* Bulk IN endpoint */
-    struct usb_endpoint_descriptor *bulkout; /* Bulk OUT endpoint */
-#ifdef CONFIG_USBHOST_CDC_ACM_NOTIFY
-    struct usb_endpoint_descriptor *intin;   /* INTR IN endpoint (optional) */
-#endif
-    struct usbh_urb bulkout_urb;
-    struct usbh_urb bulkin_urb;
-#ifdef CONFIG_USBHOST_CDC_ACM_NOTIFY
-    struct usbh_urb intin_urb;
-#endif
-
-    struct cdc_line_coding linecoding;
-
-    uint8_t intf;
-    uint8_t minor;
-
-    void *user_data;
-};
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-int usbh_cdc_acm_set_line_coding(struct usbh_cdc_acm *cdc_acm_class, struct cdc_line_coding *line_coding);
-int usbh_cdc_acm_get_line_coding(struct usbh_cdc_acm *cdc_acm_class, struct cdc_line_coding *line_coding);
-int usbh_cdc_acm_set_line_state(struct usbh_cdc_acm *cdc_acm_class, bool dtr, bool rts);
-
-int usbh_cdc_acm_bulk_in_transfer(struct usbh_cdc_acm *cdc_acm_class, uint8_t *buffer, uint32_t buflen, uint32_t timeout);
-int usbh_cdc_acm_bulk_out_transfer(struct usbh_cdc_acm *cdc_acm_class, uint8_t *buffer, uint32_t buflen, uint32_t timeout);
-
-void usbh_cdc_acm_run(struct usbh_cdc_acm *cdc_acm_class);
-void usbh_cdc_acm_stop(struct usbh_cdc_acm *cdc_acm_class);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* USBH_CDC_ACM_H */
--- a/class/gamepad/usb_gamepad.h
+++ b/class/gamepad/usb_gamepad.h
@@ -0,0 +1,224 @@
+/*
+ * Copyright (c) 2026, sakumisu
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#ifndef USB_GAMEPAD_H
+#define USB_GAMEPAD_H
+
+#include "usb_hid.h"
+
+/*
+ *  GAMEPAD BUTTON LAYOUT
+ *
+ *            ____________________________              __
+ *           / [__L2__]          [__R2__] \               |
+ *          / [__ L1 __]        [__ R1 __] \              | Triggers
+ *       __/________________________________\__         __|
+ *      /                                  _   \          |
+ *     /      /\           __             (B4)  \         |
+ *    /       ||      __  |A1|  __     _       _ \        | Main Pad
+ *   |    <===DP===> |S1|      |S2|  (B3) -|- (B2)|       |
+ *    \       ||      ¯¯        ¯¯       _       /        |
+ *    /\      \/   /   \        /   \   (B1)   /\       __|
+ *   /  \________ | LS  | ____ | RS  | _______/  \        |
+ *  |         /  \ \___/ /    \ \___/ /  \         |      | Sticks
+ *  |        /    \_____/      \_____/    \        |    __|
+ *  |       /       L3            R3       \       |
+ *   \_____/                                \_____/
+ *
+ *     |________|______|    |______|___________|
+ *       D-Pad    Left       Right    Face
+ *               Stick      Stick    Buttons
+ *
+ *  Extended: A2=Touchpad/Capture  A3=Mute  L4/R4=Paddles
+ */
+
+// W3C Gamepad API standard button order
+// Bit position = W3C button index (trivial conversion: 1 << index)
+//
+//             Gamepad                   XInput    Switch    PS3/4/5    DInput
+//              ------                   ------    ------    -------    ------
+
+// Face buttons (right cluster)
+#define USB_GAMEPAD_BUTTON_B1 (1 << 0) // A         B         Cross      2
+#define USB_GAMEPAD_BUTTON_B2 (1 << 1) // B         A         Circle     3
+#define USB_GAMEPAD_BUTTON_B3 (1 << 2) // X         Y         Square     1
+#define USB_GAMEPAD_BUTTON_B4 (1 << 3) // Y         X         Triangle   4
+
+// Shoulder buttons
+#define USB_GAMEPAD_BUTTON_L1 (1 << 4) // LB        L         L1         5
+#define USB_GAMEPAD_BUTTON_R1 (1 << 5) // RB        R         R1         6
+#define USB_GAMEPAD_BUTTON_L2 (1 << 6) // LT        ZL        L2         7
+#define USB_GAMEPAD_BUTTON_R2 (1 << 7) // RT        ZR        R2         8
+
+// Center cluster
+#define USB_GAMEPAD_BUTTON_S1 (1 << 8) // Back      -         Select     9
+#define USB_GAMEPAD_BUTTON_S2 (1 << 9) // Start     +         Start      10
+
+// Stick clicks
+#define USB_GAMEPAD_BUTTON_L3 (1 << 10) // LS        LS        L3         11
+#define USB_GAMEPAD_BUTTON_R3 (1 << 11) // RS        RS        R3         12
+
+// D-pad
+#define USB_GAMEPAD_BUTTON_DU (1 << 12) // D-Up      D-Up      D-Up       Hat
+#define USB_GAMEPAD_BUTTON_DD (1 << 13) // D-Down    D-Down    D-Down     Hat
+#define USB_GAMEPAD_BUTTON_DL (1 << 14) // D-Left    D-Left    D-Left     Hat
+#define USB_GAMEPAD_BUTTON_DR (1 << 15) // D-Right   D-Right   D-Right    Hat
+
+// Auxiliary
+#define USB_GAMEPAD_BUTTON_A1 (1 << 16) // Guide     Home      PS         13
+#define USB_GAMEPAD_BUTTON_A2 (1 << 17) // -         Capture   Touchpad   14
+#define USB_GAMEPAD_BUTTON_A3 (1 << 18) // -         -         Mute       -
+#define USB_GAMEPAD_BUTTON_A4 (1 << 19) // -         -         -          -
+
+// Paddles (extended)
+#define USB_GAMEPAD_BUTTON_L4 (1 << 20) // P1        -         -          -
+#define USB_GAMEPAD_BUTTON_R4 (1 << 21) // P2        -         -          -
+
+#define XINPUT_VID        0x045E // Microsoft
+#define XINPUT_PID        0x028E // Xbox 360 Controller
+#define XINPUT_BCD_DEVICE 0x0114 // v1.14
+
+/* XInput (Xbox 360) USB */
+
+// XInput Interface Class/Subclass/Protocol
+#define XINPUT_INTERFACE_CLASS    0xFF
+#define XINPUT_INTERFACE_SUBCLASS 0x5D
+#define XINPUT_INTERFACE_PROTOCOL 0x01
+
+#define XINPUT_BUTTON_MASK_UP    (1U << 0)
+#define XINPUT_BUTTON_MASK_DOWN  (1U << 1)
+#define XINPUT_BUTTON_MASK_LEFT  (1U << 2)
+#define XINPUT_BUTTON_MASK_RIGHT (1U << 3)
+#define XINPUT_BUTTON_MASK_START (1U << 4)
+#define XINPUT_BUTTON_MASK_BACK  (1U << 5)
+#define XINPUT_BUTTON_MASK_L3    (1U << 6)
+#define XINPUT_BUTTON_MASK_R3    (1U << 7)
+#define XINPUT_BUTTON_MASK_LB    (1U << 8)
+#define XINPUT_BUTTON_MASK_RB    (1U << 9)
+#define XINPUT_BUTTON_MASK_GUIDE (1U << 10)
+//#define XINPUT_BUTTON_MASK_UNUSED        (1U << 11)
+#define XINPUT_BUTTON_MASK_A (1U << 12)
+#define XINPUT_BUTTON_MASK_B (1U << 13)
+#define XINPUT_BUTTON_MASK_X (1U << 14)
+#define XINPUT_BUTTON_MASK_Y (1U << 15)
+
+// LED patterns for report_id 0x01
+#define XINPUT_LED_OFF          0x00
+#define XINPUT_LED_BLINK        0x01
+#define XINPUT_LED_FLASH_1      0x02
+#define XINPUT_LED_FLASH_2      0x03
+#define XINPUT_LED_FLASH_3      0x04
+#define XINPUT_LED_FLASH_4      0x05
+#define XINPUT_LED_ON_1         0x06
+#define XINPUT_LED_ON_2         0x07
+#define XINPUT_LED_ON_3         0x08
+#define XINPUT_LED_ON_4         0x09
+#define XINPUT_LED_ROTATE       0x0A
+#define XINPUT_LED_BLINK_SLOW   0x0B
+#define XINPUT_LED_BLINK_SLOW_1 0x0C
+#define XINPUT_LED_BLINK_SLOW_2 0x0D
+
+struct xinput_in_report {
+    uint8_t report_id;   /* Always 0x00 */
+    uint8_t report_size; /* Always 0x14 (20) */
+    uint16_t buttons;    /* DPAD, Start, Back, L3, R3, LB, RB, Guide, A, B, X, Y */
+    uint8_t lt;          /* Left trigger (0-255) */
+    uint8_t rt;          /* Right trigger (0-255) */
+    int16_t lx;          /* Left stick X (-32768 to 32767) */
+    int16_t ly;          /* Left stick Y (-32768 to 32767) */
+    int16_t rx;          /* Right stick X (-32768 to 32767) */
+    int16_t ry;          /* Right stick Y (-32768 to 32767) */
+    uint8_t reserved[6]; /* Reserved/padding */
+} __PACKED;
+
+struct xinput_out_report {
+    uint8_t report_id;   // 0x00 = rumble, 0x01 = LED
+    uint8_t report_size; // 0x08
+    uint8_t led;         // LED pattern (0x00 for rumble)
+    uint8_t rumble_l;    // Left motor (large, 0-255)
+    uint8_t rumble_r;    // Right motor (small, 0-255)
+    uint8_t reserved[3]; // Padding
+} __PACKED;
+
+// clang-format off
+#define XINPUT_DESCRIPTOR_LEN (9 + 16 + 7 + 7)
+
+#define XINPUT_DESCRIPTOR_INIT(bInterfaceNumber, out_ep, in_ep)                                                                     \
+    USB_INTERFACE_DESCRIPTOR_INIT(bInterfaceNumber, 0x00, 0x02, 0xff, 0x5d, 0x01, 0x00), /* XInput proprietary descriptor (0x21) */ \
+    16, 0x21, 0x00, 0x01, 0x01, 0x24, in_ep, 0x14, 0x03, 0x00, 0x03, 0x13, out_ep, 0x00, 0x03, 0x00,                               \
+    USB_ENDPOINT_DESCRIPTOR_INIT(in_ep, 0x03, 32, 0x01),                                                                        \
+    USB_ENDPOINT_DESCRIPTOR_INIT(out_ep, 0x03, 32, 0x08)
+// clang-format on
+
+#define SWITCH_VID        0x0F0D // 0x057E Nintendo Pro Controller
+#define SWITCH_PID        0x0092 // 0x2009
+#define SWITCH_BCD_DEVICE 0x0100 // v1.00
+
+// Button masks (16-bit)
+#define SWITCH_MASK_Y       (1U << 0)
+#define SWITCH_MASK_B       (1U << 1)
+#define SWITCH_MASK_A       (1U << 2)
+#define SWITCH_MASK_X       (1U << 3)
+#define SWITCH_MASK_L       (1U << 4)
+#define SWITCH_MASK_R       (1U << 5)
+#define SWITCH_MASK_ZL      (1U << 6)
+#define SWITCH_MASK_ZR      (1U << 7)
+#define SWITCH_MASK_MINUS   (1U << 8)
+#define SWITCH_MASK_PLUS    (1U << 9)
+#define SWITCH_MASK_L3      (1U << 10)
+#define SWITCH_MASK_R3      (1U << 11)
+#define SWITCH_MASK_HOME    (1U << 12)
+#define SWITCH_MASK_CAPTURE (1U << 13)
+
+// D-pad / Hat switch values
+#define SWITCH_HAT_UP         0x00
+#define SWITCH_HAT_UP_RIGHT   0x01
+#define SWITCH_HAT_RIGHT      0x02
+#define SWITCH_HAT_DOWN_RIGHT 0x03
+#define SWITCH_HAT_DOWN       0x04
+#define SWITCH_HAT_DOWN_LEFT  0x05
+#define SWITCH_HAT_LEFT       0x06
+#define SWITCH_HAT_UP_LEFT    0x07
+#define SWITCH_HAT_CENTER     0x08
+
+// Analog stick range
+#define SWITCH_JOYSTICK_MIN 0x00
+#define SWITCH_JOYSTICK_MID 0x80
+#define SWITCH_JOYSTICK_MAX 0xFF
+
+struct switch_in_report {
+    uint16_t buttons; // 16 button bits
+    uint8_t hat;      // D-pad (hat switch, 0-8)
+    uint8_t lx;       // Left stick X (0-255, 128 = center)
+    uint8_t ly;       // Left stick Y (0-255, 128 = center)
+    uint8_t rx;       // Right stick X (0-255, 128 = center)
+    uint8_t ry;       // Right stick Y (0-255, 128 = center)
+    uint8_t vendor;   // Vendor-specific byte
+} __PACKED;
+
+struct switch_out_report {
+    uint8_t data[8]; // Vendor-specific rumble data
+} __PACKED;
+
+#define HID_SWITCH_REPORT_DESC_SIZE 86
+
+// clang-format off
+#define SWITCH_DESCRIPTOR_LEN HID_CUSTOM_INOUT_DESCRIPTOR_LEN
+
+#define SWITCH_DESCRIPTOR_INIT(bInterfaceNumber, out_ep, in_ep) \
+    HID_CUSTOM_INOUT_DESCRIPTOR_INIT(bInterfaceNumber, 0x00, HID_SWITCH_REPORT_DESC_SIZE, out_ep, in_ep, 64, 0x01)
+// clang-format on
+
+struct usb_gamepad_report {
+    uint32_t buttons;
+    uint8_t lt;
+    uint8_t rt;
+    uint8_t lx;
+    uint8_t ly;
+    uint8_t rx;
+    uint8_t ry;
+};
+
+#endif /* USB_GAMEPAD_H */
--- a/class/gamepad/usbd_gamepad.c
+++ b/class/gamepad/usbd_gamepad.c
@@ -0,0 +1,209 @@
+/*
+ * Copyright (c) 2026, sakumisu
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#include "usbd_core.h"
+#include "usbd_hid.h"
+#include "usbd_gamepad.h"
+
+USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t gamepad_report_buffer[64];
+
+static int xinput_vendor_class_request_handler(uint8_t busid, struct usb_setup_packet *setup, uint8_t **data, uint32_t *len)
+{
+    struct xinput_in_report xinput_report;
+
+    memset(&xinput_report, 0, sizeof(xinput_report));
+    xinput_report.report_size = 20;
+
+    memcpy(*data, &xinput_report, sizeof(xinput_report));
+    *len = sizeof(xinput_report);
+    return 0;
+}
+
+int usbd_gamepad_xinput_send_report(uint8_t ep, struct usb_gamepad_report *report)
+{
+    struct xinput_in_report *xinput_report;
+
+    xinput_report = (struct xinput_in_report *)gamepad_report_buffer;
+    memset(xinput_report, 0, sizeof(xinput_report));
+    xinput_report->report_size = 20;
+
+    if (report->buttons & USB_GAMEPAD_BUTTON_DU)
+        xinput_report->buttons |= XINPUT_BUTTON_MASK_UP;
+    if (report->buttons & USB_GAMEPAD_BUTTON_DD)
+        xinput_report->buttons |= XINPUT_BUTTON_MASK_DOWN;
+    if (report->buttons & USB_GAMEPAD_BUTTON_DL)
+        xinput_report->buttons |= XINPUT_BUTTON_MASK_LEFT;
+    if (report->buttons & USB_GAMEPAD_BUTTON_DR)
+        xinput_report->buttons |= XINPUT_BUTTON_MASK_RIGHT;
+    if (report->buttons & USB_GAMEPAD_BUTTON_S2)
+        xinput_report->buttons |= XINPUT_BUTTON_MASK_START;
+    if (report->buttons & USB_GAMEPAD_BUTTON_S1)
+        xinput_report->buttons |= XINPUT_BUTTON_MASK_BACK;
+    if (report->buttons & USB_GAMEPAD_BUTTON_L3)
+        xinput_report->buttons |= XINPUT_BUTTON_MASK_L3;
+    if (report->buttons & USB_GAMEPAD_BUTTON_R3)
+        xinput_report->buttons |= XINPUT_BUTTON_MASK_R3;
+    if (report->buttons & USB_GAMEPAD_BUTTON_L1)
+        xinput_report->buttons |= XINPUT_BUTTON_MASK_LB;
+    if (report->buttons & USB_GAMEPAD_BUTTON_R1)
+        xinput_report->buttons |= XINPUT_BUTTON_MASK_RB;
+    if (report->buttons & USB_GAMEPAD_BUTTON_A1)
+        xinput_report->buttons |= XINPUT_BUTTON_MASK_GUIDE;
+    if (report->buttons & USB_GAMEPAD_BUTTON_B1)
+        xinput_report->buttons |= XINPUT_BUTTON_MASK_A;
+    if (report->buttons & USB_GAMEPAD_BUTTON_B2)
+        xinput_report->buttons |= XINPUT_BUTTON_MASK_B;
+    if (report->buttons & USB_GAMEPAD_BUTTON_B3)
+        xinput_report->buttons |= XINPUT_BUTTON_MASK_X;
+    if (report->buttons & USB_GAMEPAD_BUTTON_B4)
+        xinput_report->buttons |= XINPUT_BUTTON_MASK_Y;
+
+    // Analog triggers (0-255), fall back to digital if analog is 0 but button pressed
+    xinput_report->lt = report->lt;
+    xinput_report->rt = report->rt;
+    if (xinput_report->lt == 0 && (report->buttons & USB_GAMEPAD_BUTTON_L2))
+        xinput_report->lt = 0xFF;
+    if (xinput_report->rt == 0 && (report->buttons & USB_GAMEPAD_BUTTON_R2))
+        xinput_report->rt = 0xFF;
+
+    return usbd_ep_start_write(0, ep, gamepad_report_buffer, sizeof(struct xinput_in_report));
+}
+
+// Convert gamepad dpad mask to switch hat value
+static uint8_t convert_dpad_to_switch_hat(uint32_t buttons)
+{
+    // Joypad uses active-high (1 = pressed)
+    uint8_t up = (buttons & USB_GAMEPAD_BUTTON_DU) ? 1 : 0;
+    uint8_t down = (buttons & USB_GAMEPAD_BUTTON_DD) ? 1 : 0;
+    uint8_t left = (buttons & USB_GAMEPAD_BUTTON_DL) ? 1 : 0;
+    uint8_t right = (buttons & USB_GAMEPAD_BUTTON_DR) ? 1 : 0;
+
+    if (up && right)
+        return SWITCH_HAT_UP_RIGHT;
+    if (up && left)
+        return SWITCH_HAT_UP_LEFT;
+    if (down && right)
+        return SWITCH_HAT_DOWN_RIGHT;
+    if (down && left)
+        return SWITCH_HAT_DOWN_LEFT;
+    if (up)
+        return SWITCH_HAT_UP;
+    if (down)
+        return SWITCH_HAT_DOWN;
+    if (left)
+        return SWITCH_HAT_LEFT;
+    if (right)
+        return SWITCH_HAT_RIGHT;
+
+    return SWITCH_HAT_CENTER;
+}
+
+int usbd_gamepad_switch_send_report(uint8_t ep, struct usb_gamepad_report *report)
+{
+    struct switch_in_report *switch_report;
+
+    switch_report = (struct switch_in_report *)gamepad_report_buffer;
+    memset(switch_report, 0, sizeof(switch_report));
+
+    if (report->buttons & USB_GAMEPAD_BUTTON_S1)
+        switch_report->buttons |= SWITCH_MASK_MINUS;
+    if (report->buttons & USB_GAMEPAD_BUTTON_S2)
+        switch_report->buttons |= SWITCH_MASK_PLUS;
+    if (report->buttons & USB_GAMEPAD_BUTTON_L1)
+        switch_report->buttons |= SWITCH_MASK_L;
+    if (report->buttons & USB_GAMEPAD_BUTTON_R1)
+        switch_report->buttons |= SWITCH_MASK_R;
+    if (report->buttons & USB_GAMEPAD_BUTTON_L2)
+        switch_report->buttons |= SWITCH_MASK_ZL;
+    if (report->buttons & USB_GAMEPAD_BUTTON_R2)
+        switch_report->buttons |= SWITCH_MASK_ZR;
+    if (report->buttons & USB_GAMEPAD_BUTTON_L3)
+        switch_report->buttons |= SWITCH_MASK_L3;
+    if (report->buttons & USB_GAMEPAD_BUTTON_R3)
+        switch_report->buttons |= SWITCH_MASK_R3;
+    if (report->buttons & USB_GAMEPAD_BUTTON_A1)
+        switch_report->buttons |= SWITCH_MASK_HOME;
+    if (report->buttons & USB_GAMEPAD_BUTTON_A2)
+        switch_report->buttons |= SWITCH_MASK_CAPTURE;
+    if (report->buttons & USB_GAMEPAD_BUTTON_B1)
+        switch_report->buttons |= SWITCH_MASK_B;
+    if (report->buttons & USB_GAMEPAD_BUTTON_B2)
+        switch_report->buttons |= SWITCH_MASK_A;
+    if (report->buttons & USB_GAMEPAD_BUTTON_B3)
+        switch_report->buttons |= SWITCH_MASK_Y;
+    if (report->buttons & USB_GAMEPAD_BUTTON_B4)
+        switch_report->buttons |= SWITCH_MASK_X;
+
+    switch_report->hat = convert_dpad_to_switch_hat(report->buttons);
+
+    // Analog sticks (HID convention: 0=up, 255=down - no inversion needed)
+    switch_report->lx = report->lx;
+    switch_report->ly = report->ly;
+    switch_report->rx = report->rx;
+    switch_report->ry = report->ry;
+
+    switch_report->vendor = 0;
+
+    return usbd_ep_start_write(0, ep, gamepad_report_buffer, sizeof(struct switch_in_report));
+}
+
+struct usbd_interface *usbd_gamepad_xinput_init_intf(struct usbd_interface *intf)
+{
+    intf->class_interface_handler = NULL;
+    intf->class_endpoint_handler = NULL;
+    intf->vendor_handler = xinput_vendor_class_request_handler;
+    intf->notify_handler = NULL;
+
+    return intf;
+}
+
+static const uint8_t hid_switch_report_desc[HID_SWITCH_REPORT_DESC_SIZE] = {
+    0x05, 0x01,       // Usage Page (Generic Desktop Ctrls)
+    0x09, 0x05,       // Usage (Game Pad)
+    0xA1, 0x01,       // Collection (Application)
+    0x15, 0x00,       //   Logical Minimum (0)
+    0x25, 0x01,       //   Logical Maximum (1)
+    0x35, 0x00,       //   Physical Minimum (0)
+    0x45, 0x01,       //   Physical Maximum (1)
+    0x75, 0x01,       //   Report Size (1)
+    0x95, 0x10,       //   Report Count (16)
+    0x05, 0x09,       //   Usage Page (Button)
+    0x19, 0x01,       //   Usage Minimum (Button 1)
+    0x29, 0x10,       //   Usage Maximum (Button 16)
+    0x81, 0x02,       //   Input (Data,Var,Abs)
+    0x05, 0x01,       //   Usage Page (Generic Desktop Ctrls)
+    0x25, 0x07,       //   Logical Maximum (7)
+    0x46, 0x3B, 0x01, //   Physical Maximum (315)
+    0x75, 0x04,       //   Report Size (4)
+    0x95, 0x01,       //   Report Count (1)
+    0x65, 0x14,       //   Unit (Eng Rot:Angular Pos)
+    0x09, 0x39,       //   Usage (Hat switch)
+    0x81, 0x42,       //   Input (Data,Var,Abs,Null)
+    0x65, 0x00,       //   Unit (None)
+    0x95, 0x01,       //   Report Count (1)
+    0x81, 0x01,       //   Input (Const) - 4-bit padding
+    0x26, 0xFF, 0x00, //   Logical Maximum (255)
+    0x46, 0xFF, 0x00, //   Physical Maximum (255)
+    0x09, 0x30,       //   Usage (X) - Left Stick X
+    0x09, 0x31,       //   Usage (Y) - Left Stick Y
+    0x09, 0x32,       //   Usage (Z) - Right Stick X
+    0x09, 0x35,       //   Usage (Rz) - Right Stick Y
+    0x75, 0x08,       //   Report Size (8)
+    0x95, 0x04,       //   Report Count (4)
+    0x81, 0x02,       //   Input (Data,Var,Abs)
+    0x06, 0x00, 0xFF, //   Usage Page (Vendor Defined)
+    0x09, 0x20,       //   Usage (0x20)
+    0x95, 0x01,       //   Report Count (1)
+    0x81, 0x02,       //   Input (Data,Var,Abs) - Vendor byte
+    0x0A, 0x21, 0x26, //   Usage (0x2621)
+    0x95, 0x08,       //   Report Count (8)
+    0x91, 0x02,       //   Output (Data,Var,Abs) - Rumble
+    0xC0,             // End Collection
+};
+
+struct usbd_interface *usbd_gamepad_switch_init_intf(struct usbd_interface *intf)
+{
+    return usbd_hid_init_intf(0, intf, hid_switch_report_desc, HID_SWITCH_REPORT_DESC_SIZE);
+}
--- a/class/gamepad/usbd_gamepad.h
+++ b/class/gamepad/usbd_gamepad.h
@@ -0,0 +1,22 @@
+/*
+ * Copyright (c) 2026, sakumisu
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#ifndef USBD_GAMEPAD_H
+#define USBD_GAMEPAD_H
+
+#include "usb_gamepad.h"
+
+#define USBD_GAMEPAD_MODE_XINPUT  0
+#define USBD_GAMEPAD_MODE_SWITCH  1
+#define USBD_GAMEPAD_MODE_XBOXONE 2
+#define USBD_GAMEPAD_MODE_PS4     3
+
+struct usbd_interface *usbd_gamepad_xinput_init_intf(struct usbd_interface *intf);
+struct usbd_interface *usbd_gamepad_switch_init_intf(struct usbd_interface *intf);
+
+int usbd_gamepad_xinput_send_report(uint8_t ep, struct usb_gamepad_report *report);
+int usbd_gamepad_switch_send_report(uint8_t ep, struct usb_gamepad_report *report);
+
+#endif /* USBD_GAMEPAD_H */
--- a/class/hid/usb_hid.h
+++ b/class/hid/usb_hid.h
@@ -35,7 +35,7 @@
 #define HID_REPORT_OUTPUT  0x02
 #define HID_REPORT_FEATURE 0x03

-/* HID Descriptor ***********************************************************/
+/* HID Descriptor */

 #define HID_COUNTRY_NONE        0x00 /* Not Supported */
 #define HID_COUNTRY_ARABIC      0x01 /* Arabic */
@@ -74,99 +74,114 @@
 #define HID_COUNTRY_YUGOSLAVIA  0x34 /* Yugoslavia */
 #define HID_COUNTRY_TURKISHF    0x35 /* Turkish-F */

-/* HID report items */
-#define HID_REPORT_ITEM_SIZE_MASK   0x03
-#define HID_REPORT_ITEM_SIZE_0      0x00 /* No data follows */
-#define HID_REPORT_ITEM_SIZE_1      0x01 /* 1 byte of data follows */
-#define HID_REPORT_ITEM_SIZE_2      0x02 /* 2 bytes of data follow */
-#define HID_REPORT_ITEM_SIZE_4      0x03 /* 4 bytes of data follow */
-#define HID_REPORT_ITEM_TYPE_MASK   0x0c
-#define HID_REPORT_ITEM_TYPE_MAIN   0x00
-#define HID_REPORT_ITEM_TYPE_GLOBAL 0x04
-#define HID_REPORT_ITEM_TYPE_LOCAL  0x08
-#define HID_REPORT_ITEM_TAG_MASK    0xf0
+/* HID report See specification at
+ * https://www.usb.org/sites/default/files/hid1_11.pdf
+ * https://www.usb.org/sites/default/files/hut1_22.pdf
+ */
+
+#define HID_SIZE_MASK (0x3 << 0)
+#define HID_TYPE_MASK (0x3 << 2)
+#define HID_TAG_MASK  (0xF << 4)
+
+#define HID_ITEMTYPE_MAIN   (0x0 << 2)
+#define HID_ITEMTYPE_GLOBAL (0x1 << 2)
+#define HID_ITEMTYPE_LOCAL  (0x2 << 2)
+#define HID_ITEMTYPE_LONG   (0x3 << 2)

 /* Main Items (HID 6.2.2.4) */
-#define HID_MAIN_ITEM_CONSTANT      (1 << 0) /* Constant(1) vs Data(0) */
-#define HID_MAIN_ITEM_VARIABLE      (1 << 1) /* Variable(1) vs Array(0) */
-#define HID_MAIN_ITEM_RELATIVE      (1 << 2) /* Relative(1) vs Absolute(0) */
-#define HID_MAIN_ITEM_WRAP          (1 << 3) /* Wrap(1) vs No Wrap(0) */
-#define HID_MAIN_ITEM_NONLINEAR     (1 << 4) /* Non Linear(1) vs Linear(0) */
-#define HID_MAIN_ITEM_NOPREFERRED   (1 << 5) /* No Preferred (1) vs Preferred State(0) */
-#define HID_MAIN_ITEM_NULLSTATE     (1 << 6) /* Null state(1) vs No Null position(0) */
-#define HID_MAIN_ITEM_VOLATILE      (1 << 7) /* Volatile(1) vs Non volatile(0) */
-#define HID_MAIN_ITEM_BUFFEREDBYTES (1 << 8) /* Buffered Bytes(1) vs Bit Field(0) */
+#define HID_MAINITEM_TAG_INPUT         (0x08 << 4)
+#define HID_MAINITEM_TAG_OUTPUT        (0x09 << 4)
+#define HID_MAINITEM_TAG_COLLECTION    (0x0a << 4)
+#define HID_MAINITEM_TAG_FEATURE       (0x0b << 4)
+#define HID_MAINITEM_TAG_ENDCOLLECTION (0x0c << 4)

-#define HID_MAIN_ITEM_SIZE(pfx)           ((pfx)&HID_REPORT_ITEM_SIZE_MASK)
-#define HID_MAIN_ITEM_INPUT_PREFIX        0x80
-#define HID_MAIN_ITEM_INPUT_CONSTANT      HID_MAIN_ITEM_CONSTANT
-#define HID_MAIN_ITEM_INPUT_VARIABLE      HID_MAIN_ITEM_VARIABLE
-#define HID_MAIN_ITEM_INPUT_RELATIVE      HID_MAIN_ITEM_RELATIVE
-#define HID_MAIN_ITEM_INPUT_WRAP          HID_MAIN_ITEM_WRAP
-#define HID_MAIN_ITEM_INPUT_NONLINEAR     HID_MAIN_ITEM_NONLINEAR
-#define HID_MAIN_ITEM_INPUT_NOPREFERRED   HID_MAIN_ITEM_NOPREFERRED
-#define HID_MAIN_ITEM_INPUT_NULLSTATE     HID_MAIN_ITEM_NULLSTATE
-#define HID_MAIN_ITEM_INPUT_BUFFEREDBYTES HID_MAIN_ITEM_BUFFEREDBYTES
+#define HID_MAINITEM_CONSTANT      (1 << 0) /* Constant(1) vs Data(0) */
+#define HID_MAINITEM_VARIABLE      (1 << 1) /* Variable(1) vs Array(0) */
+#define HID_MAINITEM_RELATIVE      (1 << 2) /* Relative(1) vs Absolute(0) */
+#define HID_MAINITEM_WRAP          (1 << 3) /* Wrap(1) vs No Wrap(0) */
+#define HID_MAINITEM_NONLINEAR     (1 << 4) /* Non Linear(1) vs Linear(0) */
+#define HID_MAINITEM_NOPREFERRED   (1 << 5) /* No Preferred (1) vs Preferred State(0) */
+#define HID_MAINITEM_NULLSTATE     (1 << 6) /* Null state(1) vs No Null position(0) */
+#define HID_MAINITEM_VOLATILE      (1 << 7) /* Volatile(1) vs Non volatile(0) */
+#define HID_MAINITEM_BUFFEREDBYTES (1 << 8) /* Buffered Bytes(1) vs Bit Field(0) */

-#define HID_MAIN_ITEM_OUTPUT_PREFIX        0x90
-#define HID_MAIN_ITEM_OUTPUT_CONSTANT      HID_MAIN_ITEM_CONSTANT
-#define HID_MAIN_ITEM_OUTPUT_VARIABLE      HID_MAIN_ITEM_VARIABLE
-#define HID_MAIN_ITEM_OUTPUT_RELATIVE      HID_MAIN_ITEM_RELATIVE
-#define HID_MAIN_ITEM_OUTPUT_WRAP          HID_MAIN_ITEM_WRAP
-#define HID_MAIN_ITEM_OUTPUT_NONLINEAR     HID_MAIN_ITEM_NONLINEAR
-#define HID_MAIN_ITEM_OUTPUT_NOPREFERRED   HID_MAIN_ITEM_NOPREFERRED
-#define HID_MAIN_ITEM_OUTPUT_NULLSTATE     HID_MAIN_ITEM_NULLSTATE
-#define HID_MAIN_ITEM_OUTPUT_VOLATILE      HID_MAIN_ITEM_VOLATILE
-#define HID_MAIN_ITEM_OUTPUT_BUFFEREDBYTES HID_MAIN_ITEM_BUFFEREDBYTES
-
-#define HID_MAIN_ITEM_FEATURE_PREFIX        0xb0
-#define HID_MAIN_ITEM_FEATURE_CONSTANT      HID_MAIN_ITEM_CONSTANT
-#define HID_MAIN_ITEM_FEATURE_VARIABLE      HID_MAIN_ITEM_VARIABLE
-#define HID_MAIN_ITEM_FEATURE_RELATIVE      HID_MAIN_ITEM_RELATIVE
-#define HID_MAIN_ITEM_FEATURE_WRAP          HID_MAIN_ITEM_WRAP
-#define HID_MAIN_ITEM_FEATURE_NONLINEAR     HID_MAIN_ITEM_NONLINEAR
-#define HID_MAIN_ITEM_FEATURE_NOPREFERRED   HID_MAIN_ITEM_NOPREFERRED
-#define HID_MAIN_ITEM_FEATURE_NULLSTATE     HID_MAIN_ITEM_NULLSTATE
-#define HID_MAIN_ITEM_FEATURE_VOLATILE      HID_MAIN_ITEM_VOLATILE
-#define HID_MAIN_ITEM_FEATURE_BUFFEREDBYTES HID_MAIN_ITEM_BUFFEREDBYTES
-
-#define HID_MAIN_ITEM_COLLECTION_PREFIX    0xa0
-#define HID_MAIN_ITEM_COLLECTION_PHYSICAL  0x00 /* Physical (group of axes) */
-#define HID_MAIN_ITEM_COLLECTION_APPL      0x01 /* Application (mouse, keyboard) */
-#define HID_MAIN_ITEM_COLLECTION_LOGICAL   0x02 /* Logical (interrelated data) */
-#define HID_MAIN_ITEM_COLLECTION_REPORT    0x03 /* Report */
-#define HID_MAIN_ITEM_COLLECTION_ARRAY     0x04 /* Named Array */
-#define HID_MAIN_ITEM_COLLECTION_SWITCH    0x05 /* Usage Switch */
-#define HID_MAIN_ITEM_COLLECTION_MODIFIER  0x06 /* Usage Modifier */
-#define HID_MAIN_ITEM_ENDCOLLECTION_PREFIX 0xc0
+#define HID_MAINITEM_COLLECTION_PHYSICAL 0x00 /* Physical (group of axes) */
+#define HID_MAINITEM_COLLECTION_APPL     0x01 /* Application (mouse, keyboard) */
+#define HID_MAINITEM_COLLECTION_LOGICAL  0x02 /* Logical (interrelated data) */
+#define HID_MAINITEM_COLLECTION_REPORT   0x03 /* Report */
+#define HID_MAINITEM_COLLECTION_ARRAY    0x04 /* Named Array */
+#define HID_MAINITEM_COLLECTION_SWITCH   0x05 /* Usage Switch */
+#define HID_MAINITEM_COLLECTION_MODIFIER 0x06 /* Usage Modifier */

 /* Global Items (HID 6.2.2.7) */
-#define HID_GLOBAL_ITEM_SIZE(pfx)          ((pfx)&HID_REPORT_ITEM_SIZE_MASK)
-#define HID_GLOBAL_ITEM_USAGEPAGE_PREFIX   0x04 /* Usage Page */
-#define HID_GLOBAL_ITEM_LOGICALMIN_PREFIX  0x14 /* Logical Minimum */
-#define HID_GLOBAL_ITEM_LOGICALMAX_PREFIX  0x24 /* Logical Maximum */
-#define HID_GLOBAL_ITEM_PHYSICALMIN_PREFIX 0x34 /* Physical Minimum */
-#define HID_GLOBAL_ITEM_PHYSMICALAX_PREFIX 0x44 /* Physical Maximum */
-#define HID_GLOBAL_ITEM_UNITEXP_PREFIX     0x54 /* Unit Exponent */
-#define HID_GLOBAL_ITEM_UNIT_PREFIX        0x64 /* Unit */
-#define HID_GLOBAL_ITEM_REPORTSIZE_PREFIX  0x74 /* Report Size */
-#define HID_GLOBAL_ITEM_REPORTID_PREFIX    0x84 /* Report ID */
-#define HID_GLOBAL_ITEM_REPORTCOUNT_PREFIX 0x94 /* Report Count */
-#define HID_GLOBAL_ITEM_PUSH_PREFIX        0xa4 /* Push */
-#define HID_GLOBAL_ITEM_POP_PREFIX         0xb4 /* Pop */
+#define HID_GLOBALITEM_TAG_USAGE_PAGE   (0x00 << 4)
+#define HID_GLOBALITEM_TAG_LOGICAL_MIN  (0x01 << 4)
+#define HID_GLOBALITEM_TAG_LOGICAL_MAX  (0x02 << 4)
+#define HID_GLOBALITEM_TAG_PHYSICAL_MIN (0x03 << 4)
+#define HID_GLOBALITEM_TAG_PHYSICAL_MAX (0x04 << 4)
+#define HID_GLOBALITEM_TAG_UNIT_EXP     (0x05 << 4)
+#define HID_GLOBALITEM_TAG_UNIT         (0x06 << 4)
+#define HID_GLOBALITEM_TAG_REPORT_SIZE  (0x07 << 4)
+#define HID_GLOBALITEM_TAG_REPORT_ID    (0x08 << 4)
+#define HID_GLOBALITEM_TAG_REPORT_COUNT (0x09 << 4)
+#define HID_GLOBALITEM_TAG_PUSH         (0x0a << 4)
+#define HID_GLOBALITEM_TAG_POP          (0x0b << 4)

 /* Local Items (HID 6.2.2.8) */
-#define HID_LOCAL_ITEM_SIZE(pfx)            ((pfx)&HID_REPORT_ITEM_SIZE_MASK)
-#define HID_LOCAL_ITEM_USAGE_PREFIX         0x08 /* Usage */
-#define HID_LOCAL_ITEM_USAGEMIN_PREFIX      0x18 /* Usage Minimum */
-#define HID_LOCAL_ITEM_USAGEMAX_PREFIX      0x28 /* Usage Maximum */
-#define HID_LOCAL_ITEM_DESIGNATORIDX_PREFIX 0x38 /* Designator Index  */
-#define HID_LOCAL_ITEM_DESIGNATORMIN_PREFIX 0x48 /* Designator Minimum */
-#define HID_LOCAL_ITEM_DESIGNATORMAX_PREFIX 0x58 /* Designator Maximum */
-#define HID_LOCAL_ITEM_STRINGIDX_PREFIX     0x78 /* String Index */
-#define HID_LOCAL_ITEM_STRINGMIN_PREFIX     0x88 /* String Minimum */
-#define HID_LOCAL_ITEM_STRINGMAX_PREFIX     0x98 /* xx */
-#define HID_LOCAL_ITEM_DELIMITER_PREFIX     0xa8 /* Delimiter */
+#define HID_LOCALITEM_TAG_USAGE       (0x00 << 4)
+#define HID_LOCALITEM_TAG_USAGE_MIN   (0x01 << 4)
+#define HID_LOCALITEM_TAG_USAGE_MAX   (0x02 << 4)
+#define HID_LOCALITEM_TAG_DESIG_INDEX (0x03 << 4)
+#define HID_LOCALITEM_TAG_DESIG_MIN   (0x04 << 4)
+#define HID_LOCALITEM_TAG_DESIG_MAX   (0x05 << 4)
+/* No 6 in spec */
+#define HID_LOCALITEM_TAG_STRING_INDEX (0x07 << 4)
+#define HID_LOCALITEM_TAG_STRING_MIN   (0x08 << 4)
+#define HID_LOCALITEM_TAG_STRING_MAX   (0x09 << 4)
+#define HID_LOCALITEM_TAG_DELIMITER    (0x0a << 4) /* Also listed as reserved in spec! */
+
+/* Usage pages (HuT 3) */
+#define HID_USAGE_PAGE_UNDEFINED                0x00  /* Undefined */
+#define HID_USAGE_PAGE_GENERIC_DESKTOP_CONTROLS 0x01  /* Generic Desktop Controls */
+#define HID_USAGE_PAGE_SIMULATION_CONTROLS      0x02  /* Simulation Controls */
+#define HID_USAGE_PAGE_VR_CONTROLS              0x03  /* VR Controls */
+#define HID_USAGE_PAGE_SPORT_CONTROLS           0x04  /* Sport Controls */
+#define HID_USAGE_PAGE_GAME_CONTROLS            0x05  /* Game Controls */
+#define HID_USAGE_PAGE_GENERIC_DEVICE_CONTROLS  0x06  /* Generic Device Controls */
+#define HID_USAGE_PAGE_KEYBOARD_KEYPAD          0x07  /* Keyboard/Keypad */
+#define HID_USAGE_PAGE_LED                      0x08  /* LEDs */
+#define HID_USAGE_PAGE_BUTTON                   0x09  /* Button */
+#define HID_USAGE_PAGE_ORDINAL                  0x0a  /* Ordinal */
+#define HID_USAGE_PAGE_TELEPHONY                0x0b  /* Telephony */
+#define HID_USAGE_PAGE_CONSUMER                 0x0c  /* Consumer */
+#define HID_USAGE_PAGE_DIGITIZER                0x0d  /* Digitizer */
+#define HID_USAGE_PAGE_HAPTICS                        /* 0x0e Reserved */
+#define HID_USAGE_PAGE_PID                      0x0f  /* PID Page  Physical Interface Device */
+#define HID_USAGE_PAGE_UNICODE                  0x10  /* Unicode */
+#define HID_USAGE_PAGE_SOC                      0x11  /* Sensor Orientation Category */
+#define HID_USAGE_PAGE_EYE_AND_HEAD_TRACKER     0x12  /* Eye and Head Tracker */
+                                                      /* 0x13 Reserved */
+#define HID_USAGE_PAGE_ALPHA_DISPLAY 0x14             /* Alphanumeric Display */
+                                                      /* 0x15-3f Reserved */
+#define HID_USAGE_PAGE_MEDICAL         0x40           /* Medical Instruments */
+#define HID_USAGE_PAGE_BRAILLE_DISPLAY 0x41           /* Braille Display */
+                                                      /* 0x42-0x58 Reserved */
+#define HID_USAGE_PAGE_LIGHTING_AND_ILLUMINATION 0x59 /* Lighting and Illumination */
+                                                      /* 0x5a-0x7f Reserved */
+#define HID_USAGE_PAGE_USB_MONITOR           0x80     /* USB Monitor */
+#define HID_USAGE_PAGE_USB_ENUMERATED_VALUES 0x81     /* USB Enumerated Values */
+#define HID_USAGE_PAGE_VESA_VIRTUAL_CONTROLS 0x82     /* VESA Virtual Controls */
+#define HID_USAGE_PAGE_POWER_DEVICE          0x84     /* Power Device */
+#define HID_USAGE_PAGE_BATTERY_SYSTEM        0x85     /* Battery System */
+#define HID_USAGE_PAGE_BARCODE_SCANNER       0x8c     /* Bar Code Scanner page */
+#define HID_USAGE_PAGE_SCALE                 0x8d     /* Scale page */
+#define HID_USAGE_PAGE_MSR                   0x8e     /* Magnetic Stripe Reading (MSR) Devices */
+#define HID_USAGE_PAGE_POS                   0x8f     /* Point of Sale devices */
+#define HID_USAGE_PAGE_CAMERA_CONTROL        0x90     /* Camera Control Page */
+#define HID_USAGE_PAGE_ARCADE                0x91
+#define HID_USAGE_PAGE_GAMING_DEVICE         0x92
+#define HID_USAGE_PAGE_FIDO_ALLIANCE         0xF1D0
+#define HID_USAGE_PAGE_VENDOR_PAGE_HBYTE     0xFF00

 /* Modifier Keys (HID 8.3) */
 #define HID_MODIFIER_LCTRL  (1 << 0) /* Left Ctrl */
@@ -205,38 +220,6 @@
 #define HID_JS_INPUT_REPORT_BUTTON3         (1 << 6)
 #define HID_JS_INPUT_REPORT_BUTTON4         (1 << 7)

-/* Usage pages (HuT 3) */
-#define HID_USAGE_PAGE_UNDEFINED       0x00 /* Undefined */
-#define HID_USAGE_PAGE_GENERIC_DCTRL   0x01 /* Generic Desktop Controls */
-#define HID_USAGE_PAGE_SIMCTRL         0x02 /* Simulation Controls */
-#define HID_USAGE_PAGE_VRCTRL          0x03 /* VR Controls */
-#define HID_USAGE_PAGE_SPORTCTRL       0x04 /* Sport Controls */
-#define HID_USAGE_PAGE_GAMECTRL        0x05 /* Game Controls */
-#define HID_USAGE_PAGE_GENERIC_DEVCTRL 0x06 /* Generic Device Controls */
-#define HID_USAGE_PAGE_KBD             0x07 /* Keyboard/Keypad */
-#define HID_USAGE_PAGE_LEDS            0x08 /* LEDs */
-#define HID_USAGE_PAGE_BUTTON          0x09 /* Button */
-#define HID_USAGE_PAGE_ORDINAL         0x0a /* Ordinal */
-#define HID_USAGE_PAGE_TELEPHONY       0x0b /* Telephony */
-#define HID_USAGE_PAGE_CONSUMER        0x0c /* Consumer */
-#define HID_USAGE_PAGE_DIGITIZER       0x0d /* Digitizer */
-                                            /* 0x0e Reserved */
-#define HID_USAGE_PAGE_PIDPAGE 0x0f         /* PID Page  Physical Interface Device */
-#define HID_USAGE_PAGE_UNICODE 0x10         /* Unicode */
-                                            /* 0x11-13 Reserved */
-#define HID_USAGE_PAGE_ALPHA_DISPLAY 0x14   /* Alphanumeric Display */
-                                            /* 0x15-3f Reserved */
-#define HID_USAGE_PAGE_MEDICAL 0x40         /* Medical Instruments */
-                                            /* 0x41-7f Reserved */
-                                            /* 0x80-83 Monitor Devices */
-                                            /* 0x84-87 Power Devices */
-                                            /* 0x88-8b Reserved */
-#define HID_USAGE_PAGE_BARCODE_SCANNER 0x8c /* Bar Code Scanner page */
-#define HID_USAGE_PAGE_SCALE           0x8d /* Scale page */
-#define HID_USAGE_PAGE_MSR             0x8e /* Magnetic Stripe Reading (MSR) Devices */
-#define HID_USAGE_PAGE_POS             0x8f /* Point of Sale devices */
-#define HID_USAGE_PAGE_CAMERA_CTRL     0x90 /* Camera Control Page */
-
 /* Generic Desktop Page Usage IDs (HuT 4) */
 #define HID_DESKTOP_USAGE_UNDEFINED 0x00        /* Undefined */
 #define HID_DESKTOP_USAGE_POINTER   0x01        /* Pointer */
--- a/class/hid/usbh_hid.c
+++ b/class/hid/usbh_hid.c
@@ -20,7 +20,7 @@
 #define INTF_DESC_bInterfaceNumber  2 /** Interface number offset */
 #define INTF_DESC_bAlternateSetting 3 /** Alternate setting offset */

-USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t g_hid_buf[CONFIG_USBHOST_MAX_HID_CLASS][USB_ALIGN_UP(64, CONFIG_USB_ALIGN_SIZE)];
+USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t g_hid_buf[CONFIG_USBHOST_MAX_HID_CLASS][USB_ALIGN_UP(32, CONFIG_USB_ALIGN_SIZE)];

 static struct usbh_hid g_hid_class[CONFIG_USBHOST_MAX_HID_CLASS];
 static uint32_t g_devinuse = 0;
@@ -173,7 +173,6 @@ int usbh_hid_set_report(struct usbh_hid *hid_class, uint8_t report_type, uint8_t
 int usbh_hid_get_report(struct usbh_hid *hid_class, uint8_t report_type, uint8_t report_id, uint8_t *buffer, uint32_t buflen)
 {
    struct usb_setup_packet *setup;
-    int ret;

    if (!hid_class || !hid_class->hport) {
        return -USB_ERR_INVAL;
@@ -186,18 +185,12 @@ int usbh_hid_get_report(struct usbh_hid *hid_class, uint8_t report_type, uint8_t
    setup->wIndex = 0;
    setup->wLength = buflen;

-    ret = usbh_control_transfer(hid_class->hport, setup, g_hid_buf[hid_class->minor]);
-    if (ret < 8) {
-        return ret;
-    }
-    memcpy(buffer, g_hid_buf[hid_class->minor], MIN((uint32_t)ret - 8, buflen));
-    return ret;
+    return usbh_control_transfer(hid_class->hport, setup, buffer);
 }

 int usbh_hid_connect(struct usbh_hubport *hport, uint8_t intf)
 {
    struct usb_endpoint_descriptor *ep_desc;
-    int ret;
    uint8_t cur_iface = 0xff;
    uint8_t *p;
    bool found = false;
@@ -249,23 +242,6 @@ int usbh_hid_connect(struct usbh_hubport *hport, uint8_t intf)
        return -USB_ERR_INVAL;
    }
 found:
-    // /* 0x0 = boot protocol, 0x1 = report protocol */
-    // ret = usbh_hid_set_protocol(hid_class, 0x1);
-    // if (ret < 0) {
-    //     return ret;
-    // }
-
-    ret = usbh_hid_set_idle(hid_class, 0, 0);
-    if (ret < 0) {
-        USB_LOG_WRN("Do not support set idle\r\n");
-    }
-
-    /* We read report desc but do nothing (because of too much memory usage for parsing report desc, parsed by users) */
-    ret = usbh_hid_get_report_descriptor(hid_class, g_hid_buf[hid_class->minor], MIN(sizeof(g_hid_buf[hid_class->minor]), hid_class->report_size));
-    if (ret < 0) {
-        return ret;
-    }
-
    for (uint8_t i = 0; i < hport->config.intf[intf].altsetting[0].intf_desc.bNumEndpoints; i++) {
        ep_desc = &hport->config.intf[intf].altsetting[0].ep[i].ep_desc;
        if (ep_desc->bEndpointAddress & 0x80) {
@@ -280,7 +256,7 @@ found:
    USB_LOG_INFO("Register HID Class:%s\r\n", hport->config.intf[intf].devname);

    usbh_hid_run(hid_class);
-    return ret;
+    return 0;
 }

 int usbh_hid_disconnect(struct usbh_hubport *hport, uint8_t intf)
@@ -310,6 +286,427 @@ int usbh_hid_disconnect(struct usbh_hubport *hport, uint8_t intf)
    return ret;
 }

+static uint32_t hid_get_itemval(const uint8_t *data, unsigned int idx, unsigned int size)
+{
+    uint32_t value = 0;
+
+    for (unsigned int i = 1; i <= size; i++)
+        value |= data[idx + i] << (8 * (i - 1));
+
+    return value;
+}
+
+struct hid_report *usbh_hid_report_parse(const uint8_t *data, uint32_t report_len, uint32_t max_usages)
+{
+    uint32_t i = 0;
+    uint32_t itemtag, itemtype, itemsize;
+    uint32_t itemval;
+    struct hid_report_field field;
+    uint32_t usage_page = 0, usage = 0, usage_min = 0, usage_max = 0, flags = 0;
+    uint32_t *usages;
+    struct hid_report *hid_report;
+
+    hid_report = usb_osal_malloc(sizeof(struct hid_report));
+    if (!hid_report) {
+        USB_LOG_ERR("hid report malloc failed\r\n");
+        return NULL;
+    }
+
+    usages = usb_osal_malloc(sizeof(uint32_t) * max_usages);
+    if (!usages) {
+        USB_LOG_ERR("hid usages malloc failed\r\n");
+        goto err;
+    }
+
+    memset(hid_report, 0, sizeof(struct hid_report));
+    memset(&field, 0, sizeof(struct hid_report_field));
+
+    while (i < report_len) {
+        itemtag = data[i] & HID_TAG_MASK;
+        itemtype = data[i] & HID_TYPE_MASK;
+        itemsize = data[i] & HID_SIZE_MASK;
+
+        if (itemsize == 3) /* HID spec: 6.2.2.2 - Short Items */
+            itemsize = 4;
+
+        itemval = hid_get_itemval(data, i, itemsize);
+
+        USB_LOG_DBG("itemtype 0x%02x, itemtag 0x%02x, itemsize %d, itemval 0x%08x\r\n",
+                    itemtype, itemtag, itemsize, itemval);
+
+        switch (itemtype) {
+            case HID_ITEMTYPE_MAIN:
+                switch (itemtag) {
+                    case HID_MAINITEM_TAG_INPUT:
+                        if ((flags & HID_REPORT_FLAG_REQUIRED_MASK) != HID_REPORT_FLAG_REQUIRED_MASK)
+                            goto err;
+
+                        if (hid_report->input_count >= CONFIG_USBHOST_HID_MAX_INPUT) {
+                            USB_LOG_ERR("hid input fields exceed max limit\r\n");
+                            goto err;
+                        }
+
+                        field.flags = flags;
+                        field.properties = itemval;
+                        field.usage_page = usage_page;
+                        memcpy(&hid_report->input_fields[hid_report->input_count], &field, sizeof(struct hid_report_field));
+                        if (field.usage_count > 0) {
+                            hid_report->input_fields[hid_report->input_count].usages = usb_osal_malloc(sizeof(uint32_t) * field.usage_count);
+                            if (!hid_report->input_fields[hid_report->input_count].usages) {
+                                USB_LOG_ERR("hid input usages malloc failed\r\n");
+                                goto err;
+                            }
+                            memcpy(hid_report->input_fields[hid_report->input_count].usages, usages, sizeof(uint32_t) * field.usage_count);
+                        }
+
+                        hid_report->input_count++;
+
+                        /* only keep the global items */
+                        flags &= HID_REPORT_FLAG_GLOBAL_MASK;
+                        memset(&field, 0, sizeof(struct hid_report_field));
+                        break;
+                    case HID_MAINITEM_TAG_OUTPUT:
+                        if ((flags & HID_REPORT_FLAG_REQUIRED_MASK) != HID_REPORT_FLAG_REQUIRED_MASK)
+                            goto err;
+
+                        if (hid_report->output_count >= CONFIG_USBHOST_HID_MAX_OUTPUT) {
+                            USB_LOG_ERR("hid output fields exceed max limit\r\n");
+                            goto err;
+                        }
+
+                        field.flags = flags;
+                        field.properties = itemval;
+                        field.usage_page = usage_page;
+                        memcpy(&hid_report->output_fields[hid_report->output_count], &field, sizeof(struct hid_report_field));
+                        if (field.usage_count > 0) {
+                            hid_report->output_fields[hid_report->output_count].usages = usb_osal_malloc(sizeof(uint32_t) * field.usage_count);
+                            if (!hid_report->output_fields[hid_report->output_count].usages) {
+                                USB_LOG_ERR("hid output usages malloc failed\r\n");
+                                goto err;
+                            }
+                            memcpy(hid_report->output_fields[hid_report->output_count].usages, usages, sizeof(uint32_t) * field.usage_count);
+                        }
+
+                        hid_report->output_count++;
+
+                        /* only keep the global items */
+                        flags &= HID_REPORT_FLAG_GLOBAL_MASK;
+                        memset(&field, 0, sizeof(struct hid_report_field));
+                        break;
+                    case HID_MAINITEM_TAG_COLLECTION:
+                        memset(&field, 0, sizeof(struct hid_report_field));
+                        break;
+                    case HID_MAINITEM_TAG_FEATURE:
+
+                        if (hid_report->feature_count >= CONFIG_USBHOST_HID_MAX_FEATURE) {
+                            USB_LOG_ERR("hid feature fields exceed max limit\r\n");
+                            goto err;
+                        }
+
+                        field.flags = flags;
+                        field.properties = itemval;
+                        field.usage_page = usage_page;
+                        memcpy(&hid_report->feature_fields[hid_report->feature_count], &field, sizeof(struct hid_report_field));
+                        if (field.usage_count > 0) {
+                            hid_report->feature_fields[hid_report->feature_count].usages = usb_osal_malloc(sizeof(uint32_t) * field.usage_count);
+                            if (!hid_report->feature_fields[hid_report->feature_count].usages) {
+                                USB_LOG_ERR("hid feature usages malloc failed\r\n");
+                                goto err;
+                            }
+                            memcpy(hid_report->feature_fields[hid_report->feature_count].usages, usages, sizeof(uint32_t) * field.usage_count);
+                        }
+
+                        hid_report->feature_count++;
+
+                        memset(&field, 0, sizeof(struct hid_report_field));
+
+                        break;
+                    case HID_MAINITEM_TAG_ENDCOLLECTION:
+                        break;
+                    default:
+                        goto err;
+                }
+                break;
+            case HID_ITEMTYPE_GLOBAL:
+                switch (itemtag) {
+                    case HID_GLOBALITEM_TAG_USAGE_PAGE:
+                        usage_page = itemval;
+
+                        if (usage_page > UINT16_MAX)
+                            goto err;
+
+                        flags |= HID_REPORT_FLAG_USAGE_PAGE;
+                        break;
+                    case HID_GLOBALITEM_TAG_LOGICAL_MIN:
+                        field.logical_min = (int32_t)itemval;
+                        flags |= HID_REPORT_FLAG_LOGICAL_MIN;
+                        break;
+                    case HID_GLOBALITEM_TAG_LOGICAL_MAX:
+                        field.logical_max = (int32_t)itemval;
+                        flags |= HID_REPORT_FLAG_LOGICAL_MAX;
+                        break;
+                    case HID_GLOBALITEM_TAG_REPORT_SIZE:
+                        field.report_size = itemval;
+                        flags |= HID_REPORT_FLAG_REPORT_SIZE;
+                        break;
+                    case HID_GLOBALITEM_TAG_REPORT_COUNT:
+                        field.report_count = itemval;
+                        flags |= HID_REPORT_FLAG_REPORT_COUNT;
+                        break;
+                    case HID_GLOBALITEM_TAG_REPORT_ID:
+                        hid_report->uses_report_id = true;
+                        field.report_id = itemval;
+                        flags |= HID_REPORT_FLAG_REPORT_ID;
+                        break;
+                    default:
+                        goto err;
+                }
+                break;
+            case HID_ITEMTYPE_LOCAL:
+                switch (itemtag) {
+                    case HID_LOCALITEM_TAG_USAGE:
+                        usage = itemval;
+                        /* Extended usage (size 4) combines both usage page and id */
+                        if (itemsize != 4) {
+                            if (!(flags & HID_REPORT_FLAG_USAGE_PAGE))
+                                goto err;
+                            usage |= usage_page << 16;
+                        }
+
+                        usages[field.usage_count++] = usage;
+
+                        break;
+                    case HID_LOCALITEM_TAG_USAGE_MIN:
+                        usage_min = itemval;
+                        if (itemsize == 4) {
+                            /* Usage max must be extended as well */
+                            flags |= HID_REPORT_FLAG_EXTENDED_USAGE;
+                        } else {
+                            if (!(flags & HID_REPORT_FLAG_USAGE_PAGE))
+                                goto err;
+                            usage_min |= usage_page << 16;
+                        }
+                        field.usage_min = usage_min;
+                        flags |= HID_REPORT_FLAG_USAGE_MIN;
+                        break;
+                    case HID_LOCALITEM_TAG_USAGE_MAX:
+                        if (!(flags & HID_REPORT_FLAG_USAGE_MIN))
+                            goto err;
+
+                        usage_max = itemval;
+                        if (flags & HID_REPORT_FLAG_EXTENDED_USAGE) {
+                            /* Fail if max is not extended usage (HID spec 6.2.2.8) */
+                            if (itemsize != 4)
+                                goto err;
+                        } else if (itemsize == 4) {
+                            /* Fail because min wasn't extended, but max is */
+                            goto err;
+                        } else {
+                            if (!(flags & HID_REPORT_FLAG_USAGE_PAGE))
+                                goto err;
+                            usage_max |= usage_page << 16;
+                        }
+
+                        /* Usage min and max must be on the same page */
+                        if (USAGE_PAGE(usage_min) != USAGE_PAGE(usage_max)) {
+                            goto err;
+                        }
+
+                        if (usage_min > usage_max) {
+                            goto err;
+                        }
+
+                        for (uint32_t j = usage_min; j <= usage_max; j++) {
+                            usages[field.usage_count++] = j;
+                        }
+
+                        field.usage_max = usage_max;
+                        flags |= HID_REPORT_FLAG_USAGE_MAX;
+                        flags &= ~(HID_REPORT_FLAG_USAGE_MIN | HID_REPORT_FLAG_EXTENDED_USAGE);
+                        break;
+                    default:
+                        goto err;
+                }
+                break;
+            default:
+                goto err;
+        }
+
+        i += (1 + itemsize);
+    }
+    usb_osal_free(usages);
+    return hid_report;
+err:
+    if (hid_report) {
+        usb_osal_free(hid_report);
+
+        for (uint32_t j = 0; j < hid_report->input_count; j++)
+            usb_osal_free(hid_report->input_fields[j].usages);
+
+        for (uint32_t j = 0; j < hid_report->output_count; j++)
+            usb_osal_free(hid_report->output_fields[j].usages);
+
+        for (uint32_t j = 0; j < hid_report->feature_count; j++)
+            usb_osal_free(hid_report->feature_fields[j].usages);
+    }
+
+    if (usages)
+        usb_osal_free(usages);
+    return NULL;
+}
+
+void usbh_hid_report_free(struct hid_report *hid_report)
+{
+    if (hid_report) {
+        for (uint32_t j = 0; j < hid_report->input_count; j++)
+            usb_osal_free(hid_report->input_fields[j].usages);
+
+        for (uint32_t j = 0; j < hid_report->output_count; j++)
+            usb_osal_free(hid_report->output_fields[j].usages);
+
+        for (uint32_t j = 0; j < hid_report->feature_count; j++)
+            usb_osal_free(hid_report->feature_fields[j].usages);
+
+        usb_osal_free(hid_report);
+    }
+}
+
+USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t g_hid_report_buf[2048];
+
+static const char *hid_property_string(uint32_t value)
+{
+    uint32_t off = 0;
+    static char buffer[160];
+
+    memset(buffer, 0, sizeof(buffer));
+
+    if (value & HID_MAINITEM_CONSTANT)
+        off += snprintf(buffer + off, sizeof(buffer) - off, "Constant, ");
+    else
+        off += snprintf(buffer + off, sizeof(buffer) - off, "Data, ");
+
+    if (value & HID_MAINITEM_VARIABLE)
+        off += snprintf(buffer + off, sizeof(buffer) - off, "Variable, ");
+    else
+        off += snprintf(buffer + off, sizeof(buffer) - off, "Array, ");
+
+    if (value & HID_MAINITEM_RELATIVE)
+        off += snprintf(buffer + off, sizeof(buffer) - off, "Relative, ");
+    else
+        off += snprintf(buffer + off, sizeof(buffer) - off, "Absolute, ");
+
+    if (value & HID_MAINITEM_WRAP)
+        off += snprintf(buffer + off, sizeof(buffer) - off, "Wrap, ");
+    else
+        off += snprintf(buffer + off, sizeof(buffer) - off, "NoWrap, ");
+
+    if (value & HID_MAINITEM_NONLINEAR)
+        off += snprintf(buffer + off, sizeof(buffer) - off, "NonLinear, ");
+    else
+        off += snprintf(buffer + off, sizeof(buffer) - off, "Linear, ");
+
+    if (value & HID_MAINITEM_NOPREFERRED)
+        off += snprintf(buffer + off, sizeof(buffer) - off, "NoPreferred, ");
+    else
+        off += snprintf(buffer + off, sizeof(buffer) - off, "Preferred, ");
+
+    if (value & HID_MAINITEM_NULLSTATE)
+        off += snprintf(buffer + off, sizeof(buffer) - off, "NullState, ");
+    else
+        off += snprintf(buffer + off, sizeof(buffer) - off, "NoNullState, ");
+
+    if (value & HID_MAINITEM_VOLATILE)
+        off += snprintf(buffer + off, sizeof(buffer) - off, "Volatile, ");
+    else
+        off += snprintf(buffer + off, sizeof(buffer) - off, "NonVolatile, ");
+
+    if (value & HID_MAINITEM_BUFFEREDBYTES)
+        off += snprintf(buffer + off, sizeof(buffer) - off, "BufferedBytes");
+    else
+        off += snprintf(buffer + off, sizeof(buffer) - off, "BitField");
+
+    return buffer;
+
+}
+
+static void usbh_hid_field_info_print(uint32_t idx, struct hid_report_field *field)
+{
+    USB_LOG_RAW("  Field %u:\r\n", idx);
+    USB_LOG_RAW("    Usage Page: 0x%04x\r\n", (unsigned int)field->usage_page);
+    USB_LOG_RAW("    Report ID: %u\r\n", (unsigned int)field->report_id);
+    USB_LOG_RAW("    Report Size: %ubit\r\n", (unsigned int)field->report_size);
+    USB_LOG_RAW("    Report Count: %u\r\n", (unsigned int)field->report_count);
+    USB_LOG_RAW("    Logical Min: %d\r\n", field->logical_min);
+    USB_LOG_RAW("    Logical Max: %d\r\n", field->logical_max);
+    USB_LOG_RAW("    Usage Count: %u\r\n", (unsigned int)field->usage_count);
+    if (field->usage_count > 0) {
+        if (field->usage_count == 1) {
+            USB_LOG_RAW("    Usage: 0x%04x\r\n", USAGE_ID(field->usages[0]));
+        } else {
+            USB_LOG_RAW("    Usages(0x%04x ~ 0x%04x)\r\n", USAGE_ID(field->usage_min), USAGE_ID(field->usage_max));
+        }
+    }
+    USB_LOG_RAW("    Flags: 0x%04x\r\n", (unsigned int)field->flags);
+    USB_LOG_RAW("    Properties: 0x%04x(%s)\r\n", (unsigned int)field->properties, hid_property_string(field->properties));
+}
+
+int lshid(int argc, char **argv)
+{
+    struct usbh_hid *hid_class;
+    struct hid_report *hid_report;
+    int ret;
+
+    if (argc < 2) {
+        USB_LOG_ERR("please input correct command: lshid path\r\n");
+        return -1;
+    }
+
+    hid_class = usbh_find_class_instance(argv[1]);
+    if (!hid_class) {
+        USB_LOG_ERR("cannot find hid device\r\n");
+        return -1;
+    }
+
+    if (hid_class->report_size > sizeof(g_hid_report_buf)) {
+        USB_LOG_ERR("hid report buffer is too small\r\n");
+        return -1;
+    }
+
+    ret = usbh_hid_get_report_descriptor(hid_class, g_hid_report_buf, hid_class->report_size);
+    if (ret < 0) {
+        USB_LOG_ERR("get hid report descriptor failed, errcode: %d\r\n", ret);
+        return -1;
+    }
+
+    hid_report = usbh_hid_report_parse(g_hid_report_buf, hid_class->report_size, 1024);
+    if (hid_report) {
+        USB_LOG_RAW("HID report parsed successfully\r\n");
+
+        USB_LOG_RAW("Input fields: %u\r\n", (unsigned int)hid_report->input_count);
+        for (uint32_t i = 0; i < hid_report->input_count; i++) {
+            struct hid_report_field *field = &hid_report->input_fields[i];
+            usbh_hid_field_info_print(i, field);
+        }
+
+        USB_LOG_RAW("Output fields: %u\r\n", (unsigned int)hid_report->output_count);
+        for (uint32_t i = 0; i < hid_report->output_count; i++) {
+            struct hid_report_field *field = &hid_report->output_fields[i];
+            usbh_hid_field_info_print(i, field);
+        }
+
+        USB_LOG_RAW("Feature fields: %u\r\n", (unsigned int)hid_report->feature_count);
+        for (uint32_t i = 0; i < hid_report->feature_count; i++) {
+            struct hid_report_field *field = &hid_report->feature_fields[i];
+            usbh_hid_field_info_print(i, field);
+        }
+
+        usbh_hid_report_free(hid_report);
+    } else {
+        USB_LOG_ERR("HID report parsed failed\r\n");
+    }
+    return 0;
+}
+
 __WEAK void usbh_hid_run(struct usbh_hid *hid_class)
 {
    (void)hid_class;
--- a/class/hid/usbh_hid.h
+++ b/class/hid/usbh_hid.h
@@ -8,6 +8,82 @@

 #include "usb_hid.h"

+/* local items */
+#define HID_REPORT_FLAG_USAGE_MIN (1 << 0)
+#define HID_REPORT_FLAG_USAGE_MAX (1 << 1)
+
+/* global items */
+#define HID_REPORT_FLAG_REPORT_ID    (1 << 2)
+#define HID_REPORT_FLAG_REPORT_COUNT (1 << 3)
+#define HID_REPORT_FLAG_REPORT_SIZE  (1 << 4)
+#define HID_REPORT_FLAG_LOGICAL_MIN  (1 << 5)
+#define HID_REPORT_FLAG_LOGICAL_MAX  (1 << 6)
+#define HID_REPORT_FLAG_USAGE_PAGE   (1 << 7)
+
+/* main items */
+#define HID_REPORT_FLAG_INPUT   (1 << 8)
+#define HID_REPORT_FLAG_OUTPUT  (1 << 9)
+#define HID_REPORT_FLAG_FEATURE (1 << 10)
+
+#define HID_REPORT_FLAG_EXTENDED_USAGE (1 << 11)
+
+/* masks */
+
+#define HID_REPORT_FLAG_GLOBAL_MASK (HID_REPORT_FLAG_REPORT_ID |    \
+                                     HID_REPORT_FLAG_REPORT_COUNT | \
+                                     HID_REPORT_FLAG_REPORT_SIZE |  \
+                                     HID_REPORT_FLAG_LOGICAL_MIN |  \
+                                     HID_REPORT_FLAG_LOGICAL_MAX |  \
+                                     HID_REPORT_FLAG_USAGE_PAGE)
+
+#define HID_REPORT_FLAG_REQUIRED_MASK (HID_REPORT_FLAG_REPORT_COUNT | \
+                                       HID_REPORT_FLAG_REPORT_SIZE |  \
+                                       HID_REPORT_FLAG_LOGICAL_MIN |  \
+                                       HID_REPORT_FLAG_LOGICAL_MAX)
+
+#define USAGE_ID(usage)   (usage & 0x0000FFFF)
+#define USAGE_PAGE(usage) ((usage & 0xFFFF0000) >> 16)
+
+#ifndef CONFIG_USBHOST_HID_MAX_INPUT
+#define CONFIG_USBHOST_HID_MAX_INPUT 16
+#endif
+
+#ifndef CONFIG_USBHOST_HID_MAX_OUTPUT
+#define CONFIG_USBHOST_HID_MAX_OUTPUT 16
+#endif
+
+#ifndef CONFIG_USBHOST_HID_MAX_FEATURE
+#define CONFIG_USBHOST_HID_MAX_FEATURE 16
+#endif
+
+struct hid_report_field {
+    uint32_t *usages; /* usage page + usage */
+    uint32_t usage_count;
+    uint32_t usage_page;
+
+    uint32_t report_id; /* optional */
+    uint32_t report_count;
+    uint32_t report_size;
+    int32_t logical_min;
+    int32_t logical_max;
+    uint32_t properties;
+
+    uint32_t usage_min;
+    uint32_t usage_max;
+
+    uint32_t flags;
+};
+
+struct hid_report {
+    bool uses_report_id;
+    uint32_t input_count;
+    struct hid_report_field input_fields[CONFIG_USBHOST_HID_MAX_INPUT];
+    uint32_t output_count;
+    struct hid_report_field output_fields[CONFIG_USBHOST_HID_MAX_OUTPUT];
+    uint32_t feature_count;
+    struct hid_report_field feature_fields[CONFIG_USBHOST_HID_MAX_FEATURE];
+};
+
 struct usbh_hid {
    struct usbh_hubport *hport;
    struct usb_endpoint_descriptor *intin;  /* INTR IN endpoint */
@@ -36,9 +112,14 @@ int usbh_hid_get_protocol(struct usbh_hid *hid_class, uint8_t *protocol);
 int usbh_hid_set_report(struct usbh_hid *hid_class, uint8_t report_type, uint8_t report_id, uint8_t *buffer, uint32_t buflen);
 int usbh_hid_get_report(struct usbh_hid *hid_class, uint8_t report_type, uint8_t report_id, uint8_t *buffer, uint32_t buflen);

+struct hid_report *usbh_hid_report_parse(const uint8_t *data, uint32_t report_len, uint32_t max_usages);
+void usbh_hid_report_free(struct hid_report *hid_report);
+
 void usbh_hid_run(struct usbh_hid *hid_class);
 void usbh_hid_stop(struct usbh_hid *hid_class);

+int lshid(int argc, char **argv);
+
 #ifdef __cplusplus
 }
 #endif
--- a/class/hub/usbh_hub.c
+++ b/class/hub/usbh_hub.c
@@ -238,6 +238,7 @@ int usbh_hub_set_feature(struct usbh_hub *hub, uint8_t port, uint8_t feature)
 {
    struct usb_setup_packet roothub_setup;
    struct usb_setup_packet *setup;
+    int ret;

    if (hub->is_roothub) {
        setup = &roothub_setup;
@@ -246,9 +247,22 @@ int usbh_hub_set_feature(struct usbh_hub *hub, uint8_t port, uint8_t feature)
        setup->wValue = feature;
        setup->wIndex = port;
        setup->wLength = 0;
-        return usbh_roothub_control(hub->bus, setup, NULL);
+
+        ret = usbh_roothub_control(hub->bus, setup, NULL);
+
+        if ((feature == HUB_PORT_FEATURE_RESET) && (ret >= 0)) {
+            hub->bus->event_handler(hub->bus->busid, hub->index, port, USB_INTERFACE_ANY, USBH_EVENT_DEVICE_RESET);
+        }
+
+        return ret;
    } else {
-        return _usbh_hub_set_feature(hub, port, feature);
+        ret = _usbh_hub_set_feature(hub, port, feature);
+
+        if ((feature == HUB_PORT_FEATURE_RESET) && (ret >= 0)) {
+            hub->bus->event_handler(hub->bus->busid, hub->index, port, USB_INTERFACE_ANY, USBH_EVENT_DEVICE_RESET);
+        }
+
+        return ret;
    }
 }

@@ -337,11 +351,11 @@ static int usbh_hub_connect(struct usbh_hubport *hport, uint8_t intf)
    }

    /*
-	 * Super-Speed hubs need to know their depth to be able to
-	 * parse the bits of the route-string that correspond to
-	 * their downstream port number.
-	 *
-	 */
+     * Super-Speed hubs need to know their depth to be able to
+     * parse the bits of the route-string that correspond to
+     * their downstream port number.
+     *
+     */
    if ((hport->depth != 0) && (hport->speed == USB_SPEED_SUPER)) {
        ret = usbh_hub_set_depth(hub, hport->depth - 1);
        if (ret < 0) {
@@ -475,6 +489,8 @@ static void usbh_hub_events(struct usbh_hub *hub)
    int ret;
    size_t flags;

+    (void)speed_table;
+
    if (!hub->connected) {
        return;
    }
@@ -565,6 +581,8 @@ static void usbh_hub_events(struct usbh_hub *hub)

            /* Last, check connect status */
            if (portstatus & HUB_PORT_STATUS_CONNECTION) {
+                hub->bus->event_handler(hub->bus->busid, hub->index, port + 1, USB_INTERFACE_ANY, USBH_EVENT_DEVICE_CONNECTED);
+
                ret = usbh_hub_set_feature(hub, port + 1, HUB_PORT_FEATURE_RESET);
                if (ret < 0) {
                    USB_LOG_ERR("Failed to reset port %u, errorcode: %d\r\n", port + 1, ret);
@@ -646,7 +664,6 @@ static void usbh_hub_events(struct usbh_hub *hub)
                child = &hub->child[port];
                /** release child sources */
                usbh_hubport_release(child);
-                USB_LOG_INFO("Device on Bus %u, Hub %u, Port %u disconnected\r\n", hub->bus->busid, hub->index, port + 1);
            }
        }
    }
@@ -665,6 +682,7 @@ static void usbh_hub_thread(CONFIG_USB_OSAL_THREAD_SET_ARGV)
    struct usbh_bus *bus = (struct usbh_bus *)CONFIG_USB_OSAL_THREAD_GET_ARGV;

    usb_hc_init(bus);
+    bus->event_handler(bus->busid, USB_HUB_INDEX_ANY, USB_HUB_PORT_ANY, USB_INTERFACE_ANY, USBH_EVENT_INIT);
    while (1) {
        ret = usb_osal_mq_recv(bus->hub_mq, (uintptr_t *)&hub, USB_OSAL_WAITING_FOREVER);
        if (ret < 0) {
--- a/class/serial/usbh_cdc_acm.c
+++ b/class/serial/usbh_cdc_acm.c
@@ -0,0 +1,266 @@
+/*
+ * Copyright (c) 2022 ~ 2025, sakumisu
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#include "usbh_core.h"
+#include "usbh_serial.h"
+#include "usbh_cdc_acm.h"
+
+#undef USB_DBG_TAG
+#define USB_DBG_TAG "usbh_cdc_acm"
+#include "usb_log.h"
+
+struct usbh_cdc_acm {
+    struct usb_endpoint_descriptor *intin;
+    struct usbh_urb intin_urb;
+    struct usb_osal_timer *modem_timer;
+    uint16_t modem_status;
+};
+
+static int usbh_cdc_acm_attach(struct usbh_serial *serial)
+{
+    struct usb_endpoint_descriptor *ep_desc;
+    int ret;
+
+    struct usbh_cdc_acm *cdc_acm_class = usb_osal_malloc(sizeof(struct usbh_cdc_acm));
+    if (!cdc_acm_class) {
+        USB_LOG_ERR("No memory for cdc_acm_class\r\n");
+        return -USB_ERR_NOMEM;
+    }
+    memset(cdc_acm_class, 0, sizeof(struct usbh_cdc_acm));
+    serial->priv = cdc_acm_class;
+
+    for (uint8_t i = 0; i < serial->hport->config.intf[serial->intf].altsetting[0].intf_desc.bNumEndpoints; i++) {
+        ep_desc = &serial->hport->config.intf[serial->intf].altsetting[0].ep[i].ep_desc;
+
+        if (USB_GET_ENDPOINT_TYPE(ep_desc->bmAttributes) == USB_ENDPOINT_TYPE_INTERRUPT) {
+            if (ep_desc->bEndpointAddress & 0x80) {
+                USBH_EP_INIT(cdc_acm_class->intin, ep_desc);
+                break;
+            } else {
+            }
+        }
+    }
+
+    if (!cdc_acm_class->intin) {
+        USB_LOG_ERR("Failed to find interrupt endpoint\r\n");
+        ret = -USB_ERR_NODEV;
+        goto errout;
+    }
+    return 0;
+errout:
+    serial->priv = NULL;
+    usb_osal_free(cdc_acm_class);
+    return ret;
+}
+
+static void usbh_cdc_acm_detach(struct usbh_serial *serial)
+{
+    struct usbh_cdc_acm *cdc_acm_class;
+
+    if (!serial || !serial->priv) {
+        return;
+    }
+
+    cdc_acm_class = (struct usbh_cdc_acm *)serial->priv;
+    if (cdc_acm_class->intin) {
+        usbh_kill_urb(&cdc_acm_class->intin_urb);
+    }
+    serial->priv = NULL;
+    usb_osal_free(cdc_acm_class);
+}
+
+static int usbh_cdc_acm_set_line_coding(struct usbh_serial *serial, struct cdc_line_coding *line_coding)
+{
+    struct usb_setup_packet *setup;
+
+    if (!serial || !serial->hport) {
+        return -USB_ERR_INVAL;
+    }
+    setup = serial->hport->setup;
+
+    setup->bmRequestType = USB_REQUEST_DIR_OUT | USB_REQUEST_CLASS | USB_REQUEST_RECIPIENT_INTERFACE;
+    setup->bRequest = CDC_REQUEST_SET_LINE_CODING;
+    setup->wValue = 0;
+    setup->wIndex = serial->intf;
+    setup->wLength = 7;
+
+    memcpy(serial->iobuffer, line_coding, sizeof(struct cdc_line_coding));
+
+    return usbh_control_transfer(serial->hport, setup, serial->iobuffer);
+}
+
+static int usbh_cdc_acm_get_line_coding(struct usbh_serial *serial, struct cdc_line_coding *line_coding)
+{
+    struct usb_setup_packet *setup;
+    int ret;
+
+    if (!serial || !serial->hport) {
+        return -USB_ERR_INVAL;
+    }
+    setup = serial->hport->setup;
+
+    setup->bmRequestType = USB_REQUEST_DIR_IN | USB_REQUEST_CLASS | USB_REQUEST_RECIPIENT_INTERFACE;
+    setup->bRequest = CDC_REQUEST_GET_LINE_CODING;
+    setup->wValue = 0;
+    setup->wIndex = serial->intf;
+    setup->wLength = 7;
+
+    ret = usbh_control_transfer(serial->hport, setup, serial->iobuffer);
+    if (ret < 0) {
+        return ret;
+    }
+    memcpy(line_coding, serial->iobuffer, sizeof(struct cdc_line_coding));
+    return ret;
+}
+
+static int usbh_cdc_acm_set_line_state(struct usbh_serial *serial, bool dtr, bool rts)
+{
+    struct usb_setup_packet *setup;
+
+    if (!serial || !serial->hport) {
+        return -USB_ERR_INVAL;
+    }
+    setup = serial->hport->setup;
+
+    setup->bmRequestType = USB_REQUEST_DIR_OUT | USB_REQUEST_CLASS | USB_REQUEST_RECIPIENT_INTERFACE;
+    setup->bRequest = CDC_REQUEST_SET_CONTROL_LINE_STATE;
+    setup->wValue = (dtr << 0) | (rts << 1);
+    setup->wIndex = serial->intf;
+    setup->wLength = 0;
+
+    return usbh_control_transfer(serial->hport, setup, NULL);
+}
+
+static int usbh_cdc_acm_get_modem_status(struct usbh_serial *serial)
+{
+    struct usbh_cdc_acm *cdc_acm_class;
+    uintptr_t flags;
+    uint16_t status;
+
+    if (!serial || !serial->hport || !serial->priv) {
+        return -USB_ERR_INVAL;
+    }
+
+    flags = usb_osal_enter_critical_section();
+
+    cdc_acm_class = (struct usbh_cdc_acm *)serial->priv;
+
+    status = (cdc_acm_class->modem_status & CDC_SERIAL_STATE_DSR ? USBH_SERIAL_TIOCM_DSR : 0) |
+             (cdc_acm_class->modem_status & CDC_SERIAL_STATE_RING ? USBH_SERIAL_TIOCM_RI : 0) |
+             (cdc_acm_class->modem_status & CDC_SERIAL_STATE_DCD ? USBH_SERIAL_TIOCM_CD : 0) |
+             (serial->line_state & USBH_SERIAL_TIOCM_DTR ? USBH_SERIAL_TIOCM_DTR : 0) |
+             (serial->line_state & USBH_SERIAL_TIOCM_RTS ? USBH_SERIAL_TIOCM_RTS : 0);
+
+    usb_osal_leave_critical_section(flags);
+
+    return status;
+}
+
+#ifdef CONFIG_USBH_SERIAL_GET_MODEM_STATUS
+static int __usbh_cdc_acm_get_modem_status(struct usbh_serial *serial)
+{
+    struct usbh_cdc_acm *cdc_acm_class;
+    struct cdc_acm_notification *notification;
+    uint16_t difference;
+    uintptr_t flags;
+    int ret;
+
+    if (!serial || !serial->hport || !serial->priv) {
+        return -USB_ERR_INVAL;
+    }
+    cdc_acm_class = (struct usbh_cdc_acm *)serial->priv;
+
+    usbh_int_urb_fill(&cdc_acm_class->intin_urb, serial->hport, cdc_acm_class->intin, &serial->iobuffer[USBH_SERIAL_INT_NOCACHE_OFFSET], cdc_acm_class->intin->wMaxPacketSize, 0xffffffff, NULL, NULL);
+    ret = usbh_submit_urb(&cdc_acm_class->intin_urb);
+    if (ret < 0) {
+        return ret;
+    }
+
+    if (cdc_acm_class->intin_urb.actual_length < sizeof(struct cdc_acm_notification)) {
+        return -USB_ERR_INVAL;
+    }
+
+    notification = (struct cdc_acm_notification *)&serial->iobuffer[USBH_SERIAL_INT_NOCACHE_OFFSET];
+    if (notification->bNotificationType != CDC_NOTIFICATION_SERIAL_STATE) {
+        return -USB_ERR_INVAL;
+    }
+
+    flags = usb_osal_enter_critical_section();
+
+    difference = cdc_acm_class->modem_status ^ notification->data;
+    cdc_acm_class->modem_status = notification->data;
+
+    if (difference & CDC_SERIAL_STATE_DSR)
+        serial->iocount.dsr++;
+    if (difference & CDC_SERIAL_STATE_DCD)
+        serial->iocount.dcd++;
+    if (notification->data & CDC_SERIAL_STATE_BREAK)
+        serial->iocount.brk++;
+    if (notification->data & CDC_SERIAL_STATE_FRAMING)
+        serial->iocount.frame++;
+    if (notification->data & CDC_SERIAL_STATE_PARITY)
+        serial->iocount.parity++;
+    if (notification->data & CDC_SERIAL_STATE_OVERRUN)
+        serial->iocount.overrun++;
+
+    usb_osal_leave_critical_section(flags);
+
+    return ret;
+}
+#endif
+
+static const struct usbh_serial_driver cdc_acm_driver = {
+    .driver_name = "cdc_acm",
+
+    .ignore_rx_header = 0,
+    .ignore_tx_header = 0,
+
+    .attach = usbh_cdc_acm_attach,
+    .detach = usbh_cdc_acm_detach,
+    .set_flow_control = NULL,
+    .set_line_coding = usbh_cdc_acm_set_line_coding,
+    .get_line_coding = usbh_cdc_acm_get_line_coding,
+    .set_line_state = usbh_cdc_acm_set_line_state,
+    .get_modem_status = usbh_cdc_acm_get_modem_status,
+};
+
+static int usbh_cdc_acm_connect(struct usbh_hubport *hport, uint8_t intf)
+{
+    return usbh_serial_probe(hport, intf, &cdc_acm_driver) ? 0 : -USB_ERR_NOMEM;
+}
+
+static int usbh_cdc_acm_disconnect(struct usbh_hubport *hport, uint8_t intf)
+{
+    struct usbh_serial *serial = (struct usbh_serial *)hport->config.intf[intf].priv;
+
+    if (serial) {
+        usbh_serial_remove(serial);
+    }
+    return 0;
+}
+
+const struct usbh_class_driver cdc_acm_class_driver = {
+    .driver_name = "cdc_acm",
+    .connect = usbh_cdc_acm_connect,
+    .disconnect = usbh_cdc_acm_disconnect
+};
+
+CLASS_INFO_DEFINE const struct usbh_class_info cdc_acm_none_class_info = {
+    .match_flags = USB_CLASS_MATCH_INTF_CLASS | USB_CLASS_MATCH_INTF_SUBCLASS | USB_CLASS_MATCH_INTF_PROTOCOL,
+    .bInterfaceClass = USB_DEVICE_CLASS_CDC,
+    .bInterfaceSubClass = CDC_ABSTRACT_CONTROL_MODEL,
+    .bInterfaceProtocol = CDC_COMMON_PROTOCOL_NONE,
+    .id_table = NULL,
+    .class_driver = &cdc_acm_class_driver
+};
+
+CLASS_INFO_DEFINE const struct usbh_class_info cdc_acm_at_class_info = {
+    .match_flags = USB_CLASS_MATCH_INTF_CLASS | USB_CLASS_MATCH_INTF_SUBCLASS | USB_CLASS_MATCH_INTF_PROTOCOL,
+    .bInterfaceClass = USB_DEVICE_CLASS_CDC,
+    .bInterfaceSubClass = CDC_ABSTRACT_CONTROL_MODEL,
+    .bInterfaceProtocol = CDC_COMMON_PROTOCOL_AT_COMMANDS,
+    .id_table = NULL,
+    .class_driver = &cdc_acm_class_driver
+};
--- a/class/serial/usbh_cdc_acm.h
+++ b/class/serial/usbh_cdc_acm.h
@@ -0,0 +1,19 @@
+/*
+ * Copyright (c) 2022 ~ 2025, sakumisu
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#ifndef USBH_CDC_ACM_H
+#define USBH_CDC_ACM_H
+
+#include "usb_cdc.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* USBH_CDC_ACM_H */
--- a/class/serial/usbh_ch34x.c
+++ b/class/serial/usbh_ch34x.c
@@ -0,0 +1,409 @@
+/*
+ * Copyright (c) 2024 ~ 2025, sakumisu
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#include "usbh_core.h"
+#include "usbh_serial.h"
+#include "usbh_ch34x.h"
+
+#undef USB_DBG_TAG
+#define USB_DBG_TAG "usbh_ch43x"
+#include "usb_log.h"
+
+struct usbh_ch34x {
+    struct usb_endpoint_descriptor *intin;
+    struct usbh_urb intin_urb;
+    struct usb_osal_timer *modem_timer;
+    uint16_t modem_status;
+};
+
+/* refer to https://github.com/WCHSoftGroup/ch341ser_linux/blob/main/driver/ch341.c */
+
+static int usbh_ch34x_get_baudrate_div(uint32_t baudrate, uint8_t *factor, uint8_t *divisor)
+{
+    uint8_t a;
+    uint8_t b;
+    uint32_t c;
+
+    switch (baudrate) {
+        case 921600:
+            a = 0xf3;
+            b = 7;
+            break;
+
+        case 307200:
+            a = 0xd9;
+            b = 7;
+            break;
+
+        default:
+            if (baudrate > 6000000 / 255) {
+                b = 3;
+                c = 6000000;
+            } else if (baudrate > 750000 / 255) {
+                b = 2;
+                c = 750000;
+            } else if (baudrate > 93750 / 255) {
+                b = 1;
+                c = 93750;
+            } else {
+                b = 0;
+                c = 11719;
+            }
+            a = (uint8_t)(c / baudrate);
+            if (a == 0 || a == 0xFF) {
+                return -USB_ERR_INVAL;
+            }
+            if ((c / a - baudrate) > (baudrate - c / (a + 1))) {
+                a++;
+            }
+            a = (uint8_t)(256 - a);
+            break;
+    }
+
+    *factor = a;
+    *divisor = b;
+
+    return 0;
+}
+
+static int usbh_ch34x_control_out(struct usbh_serial *serial, uint8_t bRequest, uint16_t wValue, uint16_t wIndex)
+{
+    struct usb_setup_packet *setup;
+
+    if (!serial || !serial->hport) {
+        return -USB_ERR_INVAL;
+    }
+    setup = serial->hport->setup;
+
+    setup->bmRequestType = USB_REQUEST_DIR_OUT | USB_REQUEST_VENDOR | USB_REQUEST_RECIPIENT_DEVICE;
+    setup->bRequest = bRequest;
+    setup->wValue = wValue;
+    setup->wIndex = wIndex;
+    setup->wLength = 0;
+
+    return usbh_control_transfer(serial->hport, setup, NULL);
+}
+
+static int usbh_ch34x_control_in(struct usbh_serial *serial, uint8_t bRequest, uint16_t wValue, uint16_t wIndex, uint8_t *data, uint16_t size)
+{
+    struct usb_setup_packet *setup;
+    int ret;
+
+    if (!serial || !serial->hport) {
+        return -USB_ERR_INVAL;
+    }
+    setup = serial->hport->setup;
+
+    setup->bmRequestType = USB_REQUEST_DIR_IN | USB_REQUEST_VENDOR | USB_REQUEST_RECIPIENT_DEVICE;
+    setup->bRequest = bRequest;
+    setup->wValue = wValue;
+    setup->wIndex = wIndex;
+    setup->wLength = size;
+
+    ret = usbh_control_transfer(serial->hport, setup, serial->iobuffer);
+    if (ret < 0) {
+        return ret;
+    }
+    memcpy(data, serial->iobuffer, size);
+
+    return ret;
+}
+
+static int usbh_ch34x_get_version(struct usbh_serial *serial)
+{
+    int ret;
+    uint8_t buf[2];
+
+    ret = usbh_ch34x_control_in(serial, CH34X_READ_VERSION, 0, 0, buf, 2);
+    if (ret < 0) {
+        return ret;
+    }
+
+    USB_LOG_INFO("chip version: 0x%02x\r\n", buf[0]);
+    return ret;
+}
+
+static int usbh_ch34x_attach(struct usbh_serial *serial)
+{
+    struct usb_endpoint_descriptor *ep_desc;
+    int ret;
+
+    struct usbh_ch34x *ch34x_class = usb_osal_malloc(sizeof(struct usbh_ch34x));
+    if (!ch34x_class) {
+        USB_LOG_ERR("No memory for ch34x_class\r\n");
+        return -USB_ERR_NOMEM;
+    }
+    memset(ch34x_class, 0, sizeof(struct usbh_ch34x));
+    serial->priv = ch34x_class;
+
+    for (uint8_t i = 0; i < serial->hport->config.intf[serial->intf].altsetting[0].intf_desc.bNumEndpoints; i++) {
+        ep_desc = &serial->hport->config.intf[serial->intf].altsetting[0].ep[i].ep_desc;
+
+        if (USB_GET_ENDPOINT_TYPE(ep_desc->bmAttributes) == USB_ENDPOINT_TYPE_INTERRUPT) {
+            if (ep_desc->bEndpointAddress & 0x80) {
+                USBH_EP_INIT(ch34x_class->intin, ep_desc);
+                break;
+            } else {
+            }
+        }
+    }
+
+    if (!ch34x_class->intin) {
+        USB_LOG_ERR("Failed to find interrupt endpoint\r\n");
+        ret = -USB_ERR_NODEV;
+        goto errout;
+    }
+
+    ret = usbh_ch34x_get_version(serial);
+    ret |= usbh_ch34x_control_out(serial, CH34X_SERIAL_INIT, 0, 0);
+    ret |= usbh_ch34x_control_out(serial, CH34X_WRITE_REG, 0x1312, 0xd982);
+    ret |= usbh_ch34x_control_out(serial, CH34X_WRITE_REG, 0x0f2c, 0x0007);
+    if (ret < 0) {
+        goto errout;
+    }
+
+    return 0;
+errout:
+    serial->priv = NULL;
+    usb_osal_free(ch34x_class);
+    return ret;
+}
+
+static void usbh_ch34x_detach(struct usbh_serial *serial)
+{
+    struct usbh_ch34x *ch34x_class;
+
+    if (!serial || !serial->priv) {
+        return;
+    }
+
+    ch34x_class = (struct usbh_ch34x *)serial->priv;
+    if (ch34x_class->intin) {
+        usbh_kill_urb(&ch34x_class->intin_urb);
+    }
+    serial->priv = NULL;
+    usb_osal_free(ch34x_class);
+}
+
+static int usbh_ch34x_set_flow_ctrl(struct usbh_serial *serial, bool hardctrl)
+{
+    return usbh_ch34x_control_out(serial, CH34X_WRITE_REG, 0x2727, hardctrl ? 0x0101 : 0x0000);
+}
+
+static int usbh_ch34x_set_line_coding(struct usbh_serial *serial, struct cdc_line_coding *line_coding)
+{
+    uint16_t reg_value = 0;
+    uint16_t value = 0;
+    uint16_t index = 0;
+    uint8_t factor = 0;
+    uint8_t divisor = 0;
+
+    switch (line_coding->bParityType) {
+        case 0:
+            break;
+        case 1:
+            reg_value |= CH341_L_PO;
+            break;
+        case 2:
+            reg_value |= CH341_L_PE;
+            break;
+        case 3:
+            reg_value |= CH341_L_PM;
+            break;
+        case 4:
+            reg_value |= CH341_L_PS;
+            break;
+        default:
+            return -USB_ERR_INVAL;
+    }
+
+    switch (line_coding->bDataBits) {
+        case 5:
+            reg_value |= CH341_L_D5;
+            break;
+        case 6:
+            reg_value |= CH341_L_D6;
+            break;
+        case 7:
+            reg_value |= CH341_L_D7;
+            break;
+        case 8:
+            reg_value |= CH341_L_D8;
+            break;
+        default:
+            return -USB_ERR_INVAL;
+    }
+
+    if (line_coding->bCharFormat == 2) {
+        reg_value |= CH341_L_SB;
+    }
+
+    usbh_ch34x_get_baudrate_div(line_coding->dwDTERate, &factor, &divisor);
+
+    reg_value |= 0xC0;
+    value |= 0x9c;
+    value |= reg_value << 8;
+    index |= 0x80 | divisor;
+    index |= (uint16_t)factor << 8;
+
+    return usbh_ch34x_control_out(serial, CH34X_SERIAL_INIT, value, index);
+}
+
+static int usbh_ch34x_set_line_state(struct usbh_serial *serial, bool dtr, bool rts)
+{
+    uint16_t value = 0;
+    uint8_t control = 0;
+
+    control = (dtr << 5) | (rts << 6);
+    value = (uint8_t)~control;
+
+    return usbh_ch34x_control_out(serial, CH34X_MODEM_CTRL, value, 0x0000);
+}
+
+static int usbh_ch34x_get_modem_status(struct usbh_serial *serial)
+{
+    struct usbh_ch34x *ch34x_class;
+    uintptr_t flags;
+    uint16_t status;
+
+    if (!serial || !serial->hport || !serial->priv) {
+        return -USB_ERR_INVAL;
+    }
+
+    flags = usb_osal_enter_critical_section();
+
+    ch34x_class = (struct usbh_ch34x *)serial->priv;
+
+    status = (ch34x_class->modem_status & CH341_CTI_DS ? USBH_SERIAL_TIOCM_DSR : 0) |
+             (ch34x_class->modem_status & CH341_CTI_C ? USBH_SERIAL_TIOCM_CTS : 0) |
+             (ch34x_class->modem_status & CH341_CTRL_RI ? USBH_SERIAL_TIOCM_RI : 0) |
+             (ch34x_class->modem_status & CH341_CTI_DC ? USBH_SERIAL_TIOCM_CD : 0) |
+             (serial->line_state & USBH_SERIAL_TIOCM_DTR ? USBH_SERIAL_TIOCM_DTR : 0) |
+             (serial->line_state & USBH_SERIAL_TIOCM_RTS ? USBH_SERIAL_TIOCM_RTS : 0);
+
+    usb_osal_leave_critical_section(flags);
+
+    return status;
+}
+
+#ifdef CONFIG_USBH_SERIAL_GET_MODEM_STATUS
+static int __usbh_ch34x_get_modem_status(struct usbh_serial *serial, uint16_t *status)
+{
+    struct usbh_ch34x *ch34x_class;
+    uint8_t type = 0;
+    uint8_t data = 0;
+    uint16_t difference;
+    uintptr_t flags;
+    int ret;
+
+    if (!serial || !serial->hport || !serial->priv) {
+        return -USB_ERR_INVAL;
+    }
+    ch34x_class = (struct usbh_ch34x *)serial->priv;
+
+    usbh_int_urb_fill(&ch34x_class->intin_urb, serial->hport, ch34x_class->intin, &serial->iobuffer[USBH_SERIAL_INT_NOCACHE_OFFSET], ch34x_class->intin->wMaxPacketSize, 0xffffffff, NULL, NULL);
+    ret = usbh_submit_urb(&ch34x_class->intin_urb);
+    if (ret < 0) {
+        return ret;
+    }
+
+    if (ret < 4) {
+        return -USB_ERR_INVAL;
+    }
+
+    flags = usb_osal_enter_critical_section();
+
+    type = serial->iobuffer[USBH_SERIAL_INT_NOCACHE_OFFSET];
+    if (type & CH341_CTT_M) {
+        data = ~serial->iobuffer[USBH_SERIAL_INT_NOCACHE_OFFSET + 2] & CH341_CTI_ST;
+        difference = data ^ (ch34x_class->modem_status & CH341_CTI_ST);
+        ch34x_class->modem_status = data;
+
+        if (difference) {
+            if (difference & CH341_CTI_C) {
+                serial->iocount.cts++;
+            }
+            if (difference & CH341_CTI_DS) {
+                serial->iocount.dsr++;
+            }
+            if (difference & CH341_CTRL_RI) {
+                serial->iocount.rng++;
+            }
+            if (difference & CH341_CTI_DC) {
+                serial->iocount.dcd++;
+            }
+        }
+    }
+
+    if (type & CH341_CTT_O) {
+        serial->iocount.overrun++;
+    }
+    if ((type & CH341_CTT_F) == CH341_CTT_F) {
+        serial->iocount.frame++;
+    }
+    if (type & CH341_CTT_P) {
+        serial->iocount.parity++;
+    }
+
+    usb_osal_leave_critical_section(flags);
+
+    return ret;
+}
+#endif
+
+static const struct usbh_serial_driver ch34x_driver = {
+    .driver_name = "ch34x",
+
+    .ignore_rx_header = 0,
+    .ignore_tx_header = 0,
+
+    .attach = usbh_ch34x_attach,
+    .detach = usbh_ch34x_detach,
+    .set_flow_control = usbh_ch34x_set_flow_ctrl,
+    .set_line_coding = usbh_ch34x_set_line_coding,
+    .get_line_coding = NULL,
+    .set_line_state = usbh_ch34x_set_line_state,
+    .get_modem_status = usbh_ch34x_get_modem_status,
+};
+
+static int usbh_ch34x_connect(struct usbh_hubport *hport, uint8_t intf)
+{
+    return usbh_serial_probe(hport, intf, &ch34x_driver) ? 0 : -USB_ERR_NOMEM;
+}
+
+static int usbh_ch34x_disconnect(struct usbh_hubport *hport, uint8_t intf)
+{
+    struct usbh_serial *serial = (struct usbh_serial *)hport->config.intf[intf].priv;
+
+    if (serial) {
+        usbh_serial_remove(serial);
+    }
+
+    return 0;
+}
+
+static const uint16_t ch34x_id_table[][2] = {
+    { 0x1A86, 0x7523 }, /* ch340 chip */
+    { 0x1A86, 0x7522 }, /* ch340k chip */
+    { 0x1A86, 0x5523 }, /* ch341 chip */
+    { 0x1A86, 0xe523 }, /* ch330 chip */
+    { 0x4348, 0x5523 }, /* ch340 custom chip */
+    { 0, 0 },
+};
+
+const struct usbh_class_driver ch34x_class_driver = {
+    .driver_name = "ch34x",
+    .connect = usbh_ch34x_connect,
+    .disconnect = usbh_ch34x_disconnect
+};
+
+CLASS_INFO_DEFINE const struct usbh_class_info ch34x_class_info = {
+    .match_flags = USB_CLASS_MATCH_VID_PID | USB_CLASS_MATCH_INTF_CLASS,
+    .bInterfaceClass = 0xff,
+    .bInterfaceSubClass = 0x00,
+    .bInterfaceProtocol = 0x00,
+    .id_table = ch34x_id_table,
+    .class_driver = &ch34x_class_driver
+};
--- a/class/serial/usbh_ch34x.h
+++ b/class/serial/usbh_ch34x.h
@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 2024 ~ 2025, sakumisu
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#ifndef USBH_CH34X_H
+#define USBH_CH34X_H
+
+#include "usb_cdc.h"
+
+/* Requests */
+#define CH34X_READ_VERSION 0x5F
+#define CH34X_WRITE_REG    0x9A
+#define CH34X_READ_REG     0x95
+#define CH34X_SERIAL_INIT  0xA1
+#define CH34X_MODEM_CTRL   0xA4
+
+// modem control bits
+#define CH34X_BIT_RTS (1 << 6)
+#define CH34X_BIT_DTR (1 << 5)
+
+#define CH341_CTO_O   0x10
+#define CH341_CTO_D   0x20
+#define CH341_CTO_R   0x40
+#define CH341_CTI_C   0x01
+#define CH341_CTI_DS  0x02
+#define CH341_CTRL_RI 0x04
+#define CH341_CTI_DC  0x08
+#define CH341_CTI_ST  0x0f
+
+#define CH341_CTT_M BIT(3)
+#define CH341_CTT_F (BIT(2) | BIT(6))
+#define CH341_CTT_P BIT(2)
+#define CH341_CTT_O BIT(1)
+
+#define CH341_L_ER 0x80
+#define CH341_L_ET 0x40
+#define CH341_L_PS 0x38
+#define CH341_L_PM 0x28
+#define CH341_L_PE 0x18
+#define CH341_L_PO 0x08
+#define CH341_L_SB 0x04
+#define CH341_L_D8 0x03
+#define CH341_L_D7 0x02
+#define CH341_L_D6 0x01
+#define CH341_L_D5 0x00
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* USBH_CH34X_H */
--- a/class/serial/usbh_cp210x.c
+++ b/class/serial/usbh_cp210x.c
@@ -0,0 +1,507 @@
+/*
+ * Copyright (c) 2024 ~ 2025, sakumisu
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#include "usbh_core.h"
+#include "usbh_serial.h"
+#include "usbh_cp210x.h"
+
+#undef USB_DBG_TAG
+#define USB_DBG_TAG "usbh_cp210x"
+#include "usb_log.h"
+
+struct usbh_cp210x {
+    uint8_t partnum;
+    uint32_t fw_version;
+    uint32_t min_speed;
+    uint32_t max_speed;
+    bool use_actual_rate;
+    bool no_flow_control;
+    bool no_event_mode;
+};
+
+struct cp210x_rate {
+    uint32_t rate;
+    uint32_t high;
+};
+
+static const struct cp210x_rate cp210x_an205_table1[] = {
+    { 300, 300 },
+    { 600, 600 },
+    { 1200, 1200 },
+    { 1800, 1800 },
+    { 2400, 2400 },
+    { 4000, 4000 },
+    { 4800, 4803 },
+    { 7200, 7207 },
+    { 9600, 9612 },
+    { 14400, 14428 },
+    { 16000, 16062 },
+    { 19200, 19250 },
+    { 28800, 28912 },
+    { 38400, 38601 },
+    { 51200, 51558 },
+    { 56000, 56280 },
+    { 57600, 58053 },
+    { 64000, 64111 },
+    { 76800, 77608 },
+    { 115200, 117028 },
+    { 128000, 129347 },
+    { 153600, 156868 },
+    { 230400, 237832 },
+    { 250000, 254234 },
+    { 256000, 273066 },
+    { 460800, 491520 },
+    { 500000, 567138 },
+    { 576000, 670254 },
+    { 921600, 0xffffffff }
+};
+
+/*
+ * Quantises the baud rate as per AN205 Table 1
+ */
+static uint32_t cp210x_get_an205_rate(uint32_t baud)
+{
+    int i;
+
+    for (i = 0; i < ARRAY_SIZE(cp210x_an205_table1); ++i) {
+        if (baud <= cp210x_an205_table1[i].high)
+            break;
+    }
+
+    return cp210x_an205_table1[i].rate;
+}
+
+static uint32_t cp210x_get_actual_rate(uint32_t baud)
+{
+    unsigned int prescale = 1;
+    unsigned int div;
+
+    if (baud <= 365)
+        prescale = 4;
+
+    div = DIV_ROUND_CLOSEST(48000000, 2 * prescale * baud);
+    baud = 48000000 / (2 * prescale * div);
+
+    return baud;
+}
+
+static void usbh_cp210x_init_max_speed(struct usbh_serial *serial)
+{
+    struct usbh_cp210x *cp210x_class;
+
+    if (!serial || !serial->hport || !serial->priv) {
+        return;
+    }
+
+    cp210x_class = (struct usbh_cp210x *)serial->priv;
+
+    bool use_actual_rate = false;
+    uint32_t min = 300;
+    uint32_t max;
+
+    switch (cp210x_class->partnum) {
+        case CP210X_PARTNUM_CP2101:
+            max = 921600;
+            break;
+        case CP210X_PARTNUM_CP2102:
+        case CP210X_PARTNUM_CP2103:
+            max = 1000000;
+            break;
+        case CP210X_PARTNUM_CP2104:
+            use_actual_rate = true;
+            max = 2000000;
+            break;
+        case CP210X_PARTNUM_CP2108:
+            max = 2000000;
+            break;
+        case CP210X_PARTNUM_CP2105:
+            if (serial->intf == 0) {
+                use_actual_rate = true;
+                max = 2000000; /* ECI */
+            } else {
+                min = 2400;
+                max = 921600; /* SCI */
+            }
+            break;
+        case CP210X_PARTNUM_CP2102N_QFN28:
+        case CP210X_PARTNUM_CP2102N_QFN24:
+        case CP210X_PARTNUM_CP2102N_QFN20:
+            use_actual_rate = true;
+            max = 3000000;
+            break;
+        default:
+            max = 2000000;
+            break;
+    }
+
+    cp210x_class->min_speed = min;
+    cp210x_class->max_speed = max;
+    cp210x_class->use_actual_rate = use_actual_rate;
+}
+
+static int usbh_cp210x_control_out(struct usbh_serial *serial, uint8_t bRequest, uint16_t wValue, uint16_t wIndex, uint8_t *data, uint16_t size)
+{
+    struct usb_setup_packet *setup;
+
+    if (!serial || !serial->hport) {
+        return -USB_ERR_INVAL;
+    }
+    setup = serial->hport->setup;
+
+    setup->bmRequestType = USB_REQUEST_DIR_OUT | USB_REQUEST_VENDOR | USB_REQUEST_RECIPIENT_DEVICE;
+    setup->bRequest = bRequest;
+    setup->wValue = wValue;
+    setup->wIndex = wIndex;
+    setup->wLength = size;
+
+    if (data && size) {
+        memcpy(serial->iobuffer, data, size);
+        return usbh_control_transfer(serial->hport, setup, serial->iobuffer);
+    } else {
+        return usbh_control_transfer(serial->hport, setup, NULL);
+    }
+}
+
+static int usbh_cp210x_control_in(struct usbh_serial *serial, uint8_t bRequest, uint16_t wValue, uint16_t wIndex, uint8_t *data, uint16_t size)
+{
+    struct usb_setup_packet *setup;
+    int ret;
+
+    if (!serial || !serial->hport) {
+        return -USB_ERR_INVAL;
+    }
+    setup = serial->hport->setup;
+
+    setup->bmRequestType = USB_REQUEST_DIR_IN | USB_REQUEST_VENDOR | USB_REQUEST_RECIPIENT_DEVICE;
+    setup->bRequest = bRequest;
+    setup->wValue = wValue;
+    setup->wIndex = wIndex;
+    setup->wLength = size;
+
+    ret = usbh_control_transfer(serial->hport, setup, serial->iobuffer);
+    if (ret < 0) {
+        return ret;
+    }
+    memcpy(data, serial->iobuffer, size);
+
+    return ret;
+}
+
+static int usbh_cp210x_get_partnum(struct usbh_serial *serial)
+{
+    uint8_t version[3];
+    struct usbh_cp210x *cp210x_class;
+    int ret;
+
+    if (!serial || !serial->hport || !serial->priv) {
+        return -USB_ERR_INVAL;
+    }
+
+    cp210x_class = (struct usbh_cp210x *)serial->priv;
+
+    ret = usbh_cp210x_control_in(serial, CP210X_VENDOR_SPECIFIC, CP210X_GET_PARTNUM, serial->intf, (uint8_t *)&cp210x_class->partnum, 1);
+    if (ret < 0) {
+        return ret;
+    }
+
+    USB_LOG_INFO("chip partnum: 0x%02x\r\n", cp210x_class->partnum);
+
+    switch (cp210x_class->partnum) {
+        case CP210X_PARTNUM_CP2102:
+            break;
+        case CP210X_PARTNUM_CP2105:
+        case CP210X_PARTNUM_CP2108:
+            ret = usbh_cp210x_control_in(serial, CP210X_VENDOR_SPECIFIC, CP210X_GET_FW_VER_2N, serial->intf, version, 3);
+            if (ret < 0) {
+                return ret;
+            }
+            cp210x_class->fw_version = version[0] << 16 | version[1] << 8 | version[2];
+            break;
+        case CP210X_PARTNUM_CP2102N_QFN28:
+        case CP210X_PARTNUM_CP2102N_QFN24:
+        case CP210X_PARTNUM_CP2102N_QFN20:
+            ret = usbh_cp210x_control_in(serial, CP210X_VENDOR_SPECIFIC, CP210X_GET_FW_VER_2N, serial->intf, version, 3);
+            if (ret < 0) {
+                return ret;
+            }
+            cp210x_class->fw_version = version[0] << 16 | version[1] << 8 | version[2];
+            if (cp210x_class->fw_version <= 0x10004)
+                cp210x_class->no_flow_control = true;
+            break;
+        default:
+            break;
+    }
+    return ret;
+}
+
+static int usbh_cp210x_enable(struct usbh_serial *serial)
+{
+    return usbh_cp210x_control_out(serial, CP210X_IFC_ENABLE, 1, serial->intf, NULL, 0);
+}
+
+static int usbh_cp210x_set_chars(struct usbh_serial *serial)
+{
+    struct cp210x_special_chars chars = { 0 };
+
+    return usbh_cp210x_control_out(serial, CP210X_SET_CHARS, 0, serial->intf, (uint8_t *)&chars, sizeof(struct cp210x_special_chars));
+}
+
+// static int usbh_cp210x_get_common_status(struct usbh_serial *serial, struct cp210x_comm_status *status)
+// {
+//     return usbh_cp210x_control_in(serial, CP210X_GET_COMM_STATUS, 0, serial->intf, (uint8_t *)status, sizeof(struct cp210x_comm_status));
+// }
+
+static int usbh_cp210x_set_baudrate(struct usbh_serial *serial, uint32_t baudrate)
+{
+    struct usb_setup_packet *setup;
+    struct usbh_cp210x *cp210x_class;
+
+    if (!serial || !serial->hport || !serial->priv) {
+        return -USB_ERR_INVAL;
+    }
+    setup = serial->hport->setup;
+    cp210x_class = (struct usbh_cp210x *)serial->priv;
+
+    setup->bmRequestType = USB_REQUEST_DIR_OUT | USB_REQUEST_VENDOR | USB_REQUEST_RECIPIENT_INTERFACE;
+    setup->bRequest = CP210X_SET_BAUDRATE;
+    setup->wValue = 0;
+    setup->wIndex = serial->intf;
+    setup->wLength = 4;
+
+    if (cp210x_class->use_actual_rate)
+        baudrate = cp210x_get_actual_rate(baudrate);
+    else if (baudrate < 1000000)
+        baudrate = cp210x_get_an205_rate(baudrate);
+
+    memcpy(serial->iobuffer, (uint8_t *)&baudrate, 4);
+    return usbh_control_transfer(serial->hport, setup, serial->iobuffer);
+}
+
+static int usbh_cp210x_set_data_format(struct usbh_serial *serial, uint8_t databits, uint8_t parity, uint8_t stopbits)
+{
+    struct usb_setup_packet *setup;
+    uint16_t value;
+
+    if (!serial || !serial->hport) {
+        return -USB_ERR_INVAL;
+    }
+    setup = serial->hport->setup;
+
+    value = ((databits & 0x0F) << 8) | ((parity & 0x0f) << 4) | ((stopbits & 0x03) << 0);
+
+    setup->bmRequestType = USB_REQUEST_DIR_OUT | USB_REQUEST_VENDOR | USB_REQUEST_RECIPIENT_INTERFACE;
+    setup->bRequest = CP210X_SET_LINE_CTL;
+    setup->wValue = value;
+    setup->wIndex = serial->intf;
+    setup->wLength = 0;
+
+    return usbh_control_transfer(serial->hport, setup, NULL);
+}
+
+static int usbh_cp210x_attach(struct usbh_serial *serial)
+{
+    int ret;
+
+    struct usbh_cp210x *cp210x_class = usb_osal_malloc(sizeof(struct usbh_cp210x));
+    if (!cp210x_class) {
+        return -USB_ERR_NOMEM;
+    }
+    memset(cp210x_class, 0, sizeof(struct usbh_cp210x));
+    serial->priv = cp210x_class;
+
+    ret = usbh_cp210x_get_partnum(serial);
+    usbh_cp210x_init_max_speed(serial);
+    ret |= usbh_cp210x_enable(serial);
+    ret |= usbh_cp210x_set_chars(serial);
+    if (ret < 0) {
+        goto errout;
+    }
+    return 0;
+errout:
+    serial->priv = NULL;
+    usb_osal_free(cp210x_class);
+    return ret;
+}
+
+static void usbh_cp210x_detach(struct usbh_serial *serial)
+{
+    if (serial && serial->priv) {
+        serial->priv = NULL;
+        usb_osal_free(serial->priv);
+    }
+}
+
+int usbh_cp210x_set_flow_ctrl(struct usbh_serial *serial, bool enable)
+{
+    struct cp210x_flow_ctl flow_ctl = { 0 };
+    uint32_t flow_repl;
+    uint32_t ctl_hs;
+    int ret;
+
+    ret = usbh_cp210x_control_in(serial, CP210X_GET_FLOW, 0, serial->intf, (uint8_t *)&flow_ctl, sizeof(struct cp210x_flow_ctl));
+    if (ret < 0) {
+        return ret;
+    }
+
+    ctl_hs = flow_ctl.lControlHandshake;
+    flow_repl = flow_ctl.lFlowReplace;
+
+    ctl_hs &= ~CP210X_SERIAL_DSR_HANDSHAKE;
+    ctl_hs &= ~CP210X_SERIAL_DCD_HANDSHAKE;
+    ctl_hs &= ~CP210X_SERIAL_DSR_SENSITIVITY;
+    ctl_hs &= ~CP210X_SERIAL_DTR_MASK;
+    ctl_hs |= CP210X_SERIAL_DTR_INACTIVE;
+
+    flow_repl &= ~CP210X_SERIAL_RTS_MASK;
+    flow_repl &= ~CP210X_SERIAL_AUTO_RECEIVE;
+    flow_repl &= ~CP210X_SERIAL_AUTO_TRANSMIT;
+    flow_repl |= CP210X_SERIAL_RTS_INACTIVE;
+
+    flow_repl &= ~CP210X_SERIAL_RTS_MASK;
+    if (enable) {
+        ctl_hs |= CP210X_SERIAL_CTS_HANDSHAKE;
+    } else {
+        ctl_hs &= ~CP210X_SERIAL_CTS_HANDSHAKE;
+    }
+    flow_ctl.lControlHandshake = ctl_hs;
+    flow_ctl.lFlowReplace = flow_repl;
+
+    return usbh_cp210x_control_out(serial, CP210X_SET_FLOW, 0, serial->intf, (uint8_t *)&flow_ctl, sizeof(struct cp210x_flow_ctl));
+}
+
+int usbh_cp210x_set_line_coding(struct usbh_serial *serial, struct cdc_line_coding *line_coding)
+{
+    int ret;
+
+    ret = usbh_cp210x_set_baudrate(serial, line_coding->dwDTERate);
+    if (ret < 0) {
+        return ret;
+    }
+    return usbh_cp210x_set_data_format(serial, line_coding->bDataBits, line_coding->bParityType, line_coding->bCharFormat);
+}
+
+int usbh_cp210x_set_line_state(struct usbh_serial *serial, bool dtr, bool rts)
+{
+    struct cp210x_flow_ctl flow_ctl = { 0 };
+    uint32_t flow_repl;
+    uint32_t ctl_hs;
+    uint16_t control = 0;
+    int ret;
+
+    if (!serial || !serial->hport || !serial->priv) {
+        return -USB_ERR_INVAL;
+    }
+
+    if (serial->rtscts) {
+        ret = usbh_cp210x_control_in(serial, CP210X_GET_FLOW, 0, serial->intf, (uint8_t *)&flow_ctl, sizeof(struct cp210x_flow_ctl));
+        if (ret < 0) {
+            return ret;
+        }
+        ctl_hs = flow_ctl.lControlHandshake;
+        flow_repl = flow_ctl.lFlowReplace;
+
+        ctl_hs &= ~CP210X_SERIAL_DTR_MASK;
+        if (dtr)
+            ctl_hs |= CP210X_SERIAL_DTR_ACTIVE;
+        else
+            ctl_hs |= CP210X_SERIAL_DTR_INACTIVE;
+
+        flow_repl &= ~CP210X_SERIAL_RTS_MASK;
+        if (rts)
+            flow_repl |= CP210X_SERIAL_RTS_FLOW_CTL;
+        else
+            flow_repl |= CP210X_SERIAL_RTS_INACTIVE;
+
+        flow_ctl.lControlHandshake = ctl_hs;
+        flow_ctl.lFlowReplace = flow_repl;
+
+        return usbh_cp210x_control_out(serial, CP210X_SET_FLOW, 0, serial->intf, (uint8_t *)&flow_ctl, sizeof(struct cp210x_flow_ctl));
+    } else {
+        if (dtr) {
+            control |= CP210X_CONTROL_DTR;
+        }
+        if (rts) {
+            control |= CP210X_CONTROL_RTS;
+        }
+        control |= CP210X_CONTROL_WRITE_DTR;
+        control |= CP210X_CONTROL_WRITE_RTS;
+        return usbh_cp210x_control_out(serial, CP210X_SET_MHS, control, serial->intf, NULL, 0);
+    }
+}
+
+static int usbh_cp210x_get_modem_status(struct usbh_serial *serial)
+{
+    int ret;
+    uint8_t control;
+    uint16_t status;
+
+    if (!serial || !serial->hport) {
+        return -USB_ERR_INVAL;
+    }
+
+    ret = usbh_cp210x_control_in(serial, CP210X_GET_MDMSTS, 0, serial->intf, (uint8_t *)&control, 1);
+    if (ret < 0) {
+        return ret;
+    }
+
+    status = ((control & CP210X_CONTROL_DTR) ? USBH_SERIAL_TIOCM_DTR : 0) |
+             ((control & CP210X_CONTROL_RTS) ? USBH_SERIAL_TIOCM_RTS : 0) |
+             ((control & CP210X_CONTROL_CTS) ? USBH_SERIAL_TIOCM_CTS : 0) |
+             ((control & CP210X_CONTROL_DSR) ? USBH_SERIAL_TIOCM_DSR : 0) |
+             ((control & CP210X_CONTROL_RING) ? USBH_SERIAL_TIOCM_RI : 0) |
+             ((control & CP210X_CONTROL_DCD) ? USBH_SERIAL_TIOCM_CD : 0);
+
+    return status;
+}
+
+static const struct usbh_serial_driver cp210x_driver = {
+    .driver_name = "cp210x",
+
+    .ignore_rx_header = 0,
+    .ignore_tx_header = 0,
+
+    .attach = usbh_cp210x_attach,
+    .detach = usbh_cp210x_detach,
+    .set_flow_control = usbh_cp210x_set_flow_ctrl,
+    .set_line_coding = usbh_cp210x_set_line_coding,
+    .get_line_coding = NULL,
+    .set_line_state = usbh_cp210x_set_line_state,
+    .get_modem_status = usbh_cp210x_get_modem_status,
+};
+
+static int usbh_cp210x_connect(struct usbh_hubport *hport, uint8_t intf)
+{
+    return usbh_serial_probe(hport, intf, &cp210x_driver) ? 0 : -USB_ERR_NOMEM;
+}
+
+static int usbh_cp210x_disconnect(struct usbh_hubport *hport, uint8_t intf)
+{
+    struct usbh_serial *serial = (struct usbh_serial *)hport->config.intf[intf].priv;
+
+    if (serial) {
+        usbh_serial_remove(serial);
+    }
+    return 0;
+}
+
+static const uint16_t cp210x_id_table[][2] = {
+    { 0x10C4, 0xEA60 },
+    { 0, 0 },
+};
+
+const struct usbh_class_driver cp210x_class_driver = {
+    .driver_name = "cp210x",
+    .connect = usbh_cp210x_connect,
+    .disconnect = usbh_cp210x_disconnect
+};
+
+CLASS_INFO_DEFINE const struct usbh_class_info cp210x_class_info = {
+    .match_flags = USB_CLASS_MATCH_VID_PID | USB_CLASS_MATCH_INTF_CLASS,
+    .bInterfaceClass = 0xff,
+    .bInterfaceSubClass = 0x00,
+    .bInterfaceProtocol = 0x00,
+    .id_table = cp210x_id_table,
+    .class_driver = &cp210x_class_driver
+};
--- a/class/serial/usbh_cp210x.h
+++ b/class/serial/usbh_cp210x.h
@@ -0,0 +1,187 @@
+/*
+ * Copyright (c) 2024 ~ 2025, sakumisu
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#ifndef USBH_CP210X_H
+#define USBH_CP210X_H
+
+#include "usb_cdc.h"
+
+/* Requests */
+#define CP210X_IFC_ENABLE      0x00
+#define CP210X_SET_BAUDDIV     0x01
+#define CP210X_GET_BAUDDIV     0x02
+#define CP210X_SET_LINE_CTL    0x03 // Set parity, data bits, stop bits
+#define CP210X_GET_LINE_CTL    0x04
+#define CP210X_SET_BREAK       0x05
+#define CP210X_IMM_CHAR        0x06
+#define CP210X_SET_MHS         0x07 // Set DTR, RTS
+#define CP210X_GET_MDMSTS      0x08
+#define CP210X_SET_XON         0x09
+#define CP210X_SET_XOFF        0x0A
+#define CP210X_SET_EVENTMASK   0x0B
+#define CP210X_GET_EVENTMASK   0x0C
+#define CP210X_SET_CHAR        0x0D
+#define CP210X_GET_CHARS       0x0E
+#define CP210X_GET_PROPS       0x0F
+#define CP210X_GET_COMM_STATUS 0x10
+#define CP210X_RESET           0x11
+#define CP210X_PURGE           0x12
+#define CP210X_SET_FLOW        0x13
+#define CP210X_GET_FLOW        0x14
+#define CP210X_EMBED_EVENTS    0x15
+#define CP210X_GET_EVENTSTATE  0x16
+#define CP210X_SET_CHARS       0x19
+#define CP210X_GET_BAUDRATE    0x1D
+#define CP210X_SET_BAUDRATE    0x1E // Set baudrate
+#define CP210X_VENDOR_SPECIFIC 0xFF
+
+/* CP210X_VENDOR_SPECIFIC values */
+#define CP210X_GET_FW_VER     0x000E
+#define CP210X_READ_2NCONFIG  0x000E
+#define CP210X_GET_FW_VER_2N  0x0010
+#define CP210X_READ_LATCH     0x00C2
+#define CP210X_GET_PARTNUM    0x370B
+#define CP210X_GET_PORTCONFIG 0x370C
+#define CP210X_GET_DEVICEMODE 0x3711
+#define CP210X_WRITE_LATCH    0x37E1
+
+/* CP210X_IFC_ENABLE */
+#define CP210X_UART_ENABLE  0x0001
+#define CP210X_UART_DISABLE 0x0000
+
+/* CP210X_(SET|GET)_BAUDDIV */
+#define CP210X_BAUD_RATE_GEN_FREQ 0x384000
+
+/* CP210X_(SET|GET)_LINE_CTL */
+#define CP210X_BITS_DATA_MASK 0X0f00
+#define CP210X_BITS_DATA_5    0X0500
+#define CP210X_BITS_DATA_6    0X0600
+#define CP210X_BITS_DATA_7    0X0700
+#define CP210X_BITS_DATA_8    0X0800
+#define CP210X_BITS_DATA_9    0X0900
+
+#define CP210X_BITS_PARITY_MASK  0x00f0
+#define CP210X_BITS_PARITY_NONE  0x0000
+#define CP210X_BITS_PARITY_ODD   0x0010
+#define CP210X_BITS_PARITY_EVEN  0x0020
+#define CP210X_BITS_PARITY_MARK  0x0030
+#define CP210X_BITS_PARITY_SPACE 0x0040
+
+#define CP210X_BITS_STOP_MASK 0x000f
+#define CP210X_BITS_STOP_1    0x0000
+#define CP210X_BITS_STOP_1_5  0x0001
+#define CP210X_BITS_STOP_2    0x0002
+
+/* CP210X_SET_BREAK */
+#define CP210X_BREAK_ON  0x0001
+#define CP210X_BREAK_OFF 0x0000
+
+/* CP210X_(SET_MHS|GET_MDMSTS) */
+#define CP210X_CONTROL_DTR       0x0001
+#define CP210X_CONTROL_RTS       0x0002
+#define CP210X_CONTROL_CTS       0x0010
+#define CP210X_CONTROL_DSR       0x0020
+#define CP210X_CONTROL_RING      0x0040
+#define CP210X_CONTROL_DCD       0x0080
+#define CP210X_CONTROL_WRITE_DTR 0x0100
+#define CP210X_CONTROL_WRITE_RTS 0x0200
+
+/* CP210X_(GET|SET)_CHARS */
+struct cp210x_special_chars {
+    uint8_t bEofChar;
+    uint8_t bErrorChar;
+    uint8_t bBreakChar;
+    uint8_t bEventChar;
+    uint8_t bXonChar;
+    uint8_t bXoffChar;
+};
+
+/* CP210X_GET_COMM_STATUS returns these 0x13 bytes */
+struct cp210x_comm_status {
+    uint32_t ulErrors;
+    uint32_t ulHoldReasons;
+    uint32_t ulAmountInInQueue;
+    uint32_t ulAmountInOutQueue;
+    uint8_t bEofReceived;
+    uint8_t bWaitForImmediate;
+    uint8_t bReserved;
+} __PACKED;
+
+/*
+ * CP210X_PURGE - 16 bits passed in wValue of USB request.
+ * SiLabs app note AN571 gives a strange description of the 4 bits:
+ * bit 0 or bit 2 clears the transmit queue and 1 or 3 receive.
+ * writing 1 to all, however, purges cp2108 well enough to avoid the hang.
+ */
+#define PURGE_ALL 0x000f
+
+/* CP210X_EMBED_EVENTS */
+#define CP210X_ESCCHAR 0xec
+
+#define CP210X_LSR_OVERRUN BIT(1)
+#define CP210X_LSR_PARITY  BIT(2)
+#define CP210X_LSR_FRAME   BIT(3)
+#define CP210X_LSR_BREAK   BIT(4)
+
+/* CP210X_GET_FLOW/CP210X_SET_FLOW read/write these 0x10 bytes */
+struct cp210x_flow_ctl {
+    uint32_t lControlHandshake;
+    uint32_t lFlowReplace;
+    uint32_t lXonLimit;
+    uint32_t lXoffLimit;
+};
+
+/* cp210x_flow_ctl::ulControlHandshake */
+#define CP210X_SERIAL_DTR_MASK        (0x03 << 0)
+#define CP210X_SERIAL_DTR_INACTIVE    (0 << 0)
+#define CP210X_SERIAL_DTR_ACTIVE      (1 << 0)
+#define CP210X_SERIAL_DTR_FLOW_CTL    (2 << 0)
+#define CP210X_SERIAL_CTS_HANDSHAKE   BIT(3)
+#define CP210X_SERIAL_DSR_HANDSHAKE   BIT(4)
+#define CP210X_SERIAL_DCD_HANDSHAKE   BIT(5)
+#define CP210X_SERIAL_DSR_SENSITIVITY BIT(6)
+
+/* cp210x_flow_ctl::ulFlowReplace */
+#define CP210X_SERIAL_AUTO_TRANSMIT  BIT(0)
+#define CP210X_SERIAL_AUTO_RECEIVE   BIT(1)
+#define CP210X_SERIAL_ERROR_CHAR     BIT(2)
+#define CP210X_SERIAL_NULL_STRIPPING BIT(3)
+#define CP210X_SERIAL_BREAK_CHAR     BIT(4)
+#define CP210X_SERIAL_RTS_MASK       (0x03 << 6)
+#define CP210X_SERIAL_RTS_INACTIVE   (0 << 6)
+#define CP210X_SERIAL_RTS_ACTIVE     (1 << 6)
+#define CP210X_SERIAL_RTS_FLOW_CTL   (2 << 6)
+#define CP210X_SERIAL_XOFF_CONTINUE  BIT(31)
+
+/* CP210X_VENDOR_SPECIFIC, CP210X_GET_DEVICEMODE call reads these 0x2 bytes. */
+struct cp210x_pin_mode {
+    uint8_t eci;
+    uint8_t sci;
+};
+
+#define CP210X_PIN_MODE_MODEM 0
+#define CP210X_PIN_MODE_GPIO  BIT(0)
+
+/* Part number definitions */
+#define CP210X_PARTNUM_CP2101        0x01
+#define CP210X_PARTNUM_CP2102        0x02
+#define CP210X_PARTNUM_CP2103        0x03
+#define CP210X_PARTNUM_CP2104        0x04
+#define CP210X_PARTNUM_CP2105        0x05
+#define CP210X_PARTNUM_CP2108        0x08
+#define CP210X_PARTNUM_CP2102N_QFN28 0x20
+#define CP210X_PARTNUM_CP2102N_QFN24 0x21
+#define CP210X_PARTNUM_CP2102N_QFN20 0x22
+#define CP210X_PARTNUM_UNKNOWN       0xFF
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* USBH_CP210X_H */
--- a/class/serial/usbh_ftdi.c
+++ b/class/serial/usbh_ftdi.c
@@ -0,0 +1,407 @@
+/*
+ * Copyright (c) 2024 ~ 2025, sakumisu
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#include "usbh_core.h"
+#include "usbh_serial.h"
+#include "usbh_ftdi.h"
+
+#undef USB_DBG_TAG
+#define USB_DBG_TAG "usbh_ftdi"
+#include "usb_log.h"
+
+enum ftdi_chip_type {
+    SIO,
+    FT232A,
+    FT232B,
+    FT2232C,
+    FT232R,
+    FT232H,
+    FT2232H,
+    FT4232H,
+    FT4232HA,
+    FT232HP,
+    FT233HP,
+    FT2232HP,
+    FT2233HP,
+    FT4232HP,
+    FT4233HP,
+    FTX,
+};
+
+static const char *ftdi_chip_name[] = {
+    [SIO] = "SIO", /* the serial part of FT8U100AX */
+    [FT232A] = "FT232A",
+    [FT232B] = "FT232B",
+    [FT2232C] = "FT2232C/D",
+    [FT232R] = "FT232R",
+    [FT232H] = "FT232H",
+    [FT2232H] = "FT2232H",
+    [FT4232H] = "FT4232H",
+    [FT4232HA] = "FT4232HA",
+    [FT232HP] = "FT232HP",
+    [FT233HP] = "FT233HP",
+    [FT2232HP] = "FT2232HP",
+    [FT2233HP] = "FT2233HP",
+    [FT4232HP] = "FT4232HP",
+    [FT4233HP] = "FT4233HP",
+    [FTX] = "FT-X",
+};
+
+struct usbh_ftdi {
+    enum ftdi_chip_type chip_type;
+};
+
+static uint32_t ftdi_232bm_baud_base_to_divisor(uint32_t baud, int base)
+{
+    static const unsigned char divfrac[8] = { 0, 3, 2, 4, 1, 5, 6, 7 };
+    uint32_t divisor;
+    /* divisor shifted 3 bits to the left */
+    int divisor3 = DIV_ROUND_CLOSEST(base, 2 * baud);
+    divisor = divisor3 >> 3;
+    divisor |= (uint32_t)divfrac[divisor3 & 0x7] << 14;
+    /* Deal with special cases for highest baud rates. */
+    if (divisor == 1) /* 1.0 */
+        divisor = 0;
+    else if (divisor == 0x4001) /* 1.5 */
+        divisor = 1;
+    return divisor;
+}
+
+static uint32_t ftdi_232bm_baud_to_divisor(uint32_t baud)
+{
+    return ftdi_232bm_baud_base_to_divisor(baud, 48000000);
+}
+
+static uint32_t ftdi_2232h_baud_base_to_divisor(uint32_t baud, int base)
+{
+    static const unsigned char divfrac[8] = { 0, 3, 2, 4, 1, 5, 6, 7 };
+    uint32_t divisor;
+    int divisor3;
+
+    /* hi-speed baud rate is 10-bit sampling instead of 16-bit */
+    divisor3 = DIV_ROUND_CLOSEST(8 * base, 10 * baud);
+
+    divisor = divisor3 >> 3;
+    divisor |= (uint32_t)divfrac[divisor3 & 0x7] << 14;
+    /* Deal with special cases for highest baud rates. */
+    if (divisor == 1) /* 1.0 */
+        divisor = 0;
+    else if (divisor == 0x4001) /* 1.5 */
+        divisor = 1;
+    /*
+     * Set this bit to turn off a divide by 2.5 on baud rate generator
+     * This enables baud rates up to 12Mbaud but cannot reach below 1200
+     * baud with this bit set
+     */
+    divisor |= 0x00020000;
+    return divisor;
+}
+
+static uint32_t ftdi_2232h_baud_to_divisor(uint32_t baud)
+{
+    return ftdi_2232h_baud_base_to_divisor(baud, 120000000);
+}
+
+int usbh_ftdi_reset(struct usbh_serial *serial)
+{
+    struct usb_setup_packet *setup;
+
+    if (!serial || !serial->hport) {
+        return -USB_ERR_INVAL;
+    }
+    setup = serial->hport->setup;
+
+    setup->bmRequestType = USB_REQUEST_DIR_OUT | USB_REQUEST_VENDOR | USB_REQUEST_RECIPIENT_DEVICE;
+    setup->bRequest = FTDI_SIO_RESET;
+    setup->wValue = 0;
+    setup->wIndex = serial->intf;
+    setup->wLength = 0;
+
+    return usbh_control_transfer(serial->hport, setup, NULL);
+}
+
+static int usbh_ftdi_set_baudrate(struct usbh_serial *serial, uint32_t baudrate)
+{
+    struct usb_setup_packet *setup;
+    struct usbh_ftdi *ftdi_class;
+    uint32_t div_value;
+    uint16_t value;
+    uint8_t baudrate_high;
+
+    if (!serial || !serial->hport || !serial->priv) {
+        return -USB_ERR_INVAL;
+    }
+    setup = serial->hport->setup;
+    ftdi_class = (struct usbh_ftdi *)serial->priv;
+
+    switch (ftdi_class->chip_type) {
+        case FT232B:
+        case FT2232C:
+        case FT232R:
+            if (baudrate > 3000000) {
+                return -USB_ERR_INVAL;
+            }
+            div_value = ftdi_232bm_baud_to_divisor(baudrate);
+            break;
+        default:
+            if ((baudrate <= 12000000) && (baudrate >= 1200)) {
+                div_value = ftdi_2232h_baud_to_divisor(baudrate);
+            } else if (baudrate < 1200) {
+                div_value = ftdi_232bm_baud_to_divisor(baudrate);
+            } else {
+                return -USB_ERR_INVAL;
+            }
+            break;
+    }
+
+    value = div_value & 0xFFFF;
+    baudrate_high = (div_value >> 16) & 0xff;
+
+    setup->bmRequestType = USB_REQUEST_DIR_OUT | USB_REQUEST_VENDOR | USB_REQUEST_RECIPIENT_DEVICE;
+    setup->bRequest = FTDI_SIO_SET_BAUDRATE;
+    setup->wValue = value;
+    setup->wIndex = (baudrate_high << 8) | serial->intf;
+    setup->wLength = 0;
+
+    return usbh_control_transfer(serial->hport, setup, NULL);
+}
+
+static int usbh_ftdi_set_data_format(struct usbh_serial *serial, uint8_t databits, uint8_t parity, uint8_t stopbits, uint8_t isbreak)
+{
+    /**
+     * D0-D7 databits  BITS_7=7, BITS_8=8
+     * D8-D10 parity  NONE=0, ODD=1, EVEN=2, MARK=3, SPACE=4
+     * D11-D12 		STOP_BIT_1=0, STOP_BIT_15=1, STOP_BIT_2=2
+     * D14  		BREAK_OFF=0, BREAK_ON=1
+     **/
+    struct usb_setup_packet *setup;
+    uint16_t value;
+
+    if (!serial || !serial->hport) {
+        return -USB_ERR_INVAL;
+    }
+    setup = serial->hport->setup;
+
+    value = ((isbreak & 0x01) << 14) | ((stopbits & 0x03) << 11) | ((parity & 0x0f) << 8) | (databits & 0x0f);
+
+    setup->bmRequestType = USB_REQUEST_DIR_OUT | USB_REQUEST_VENDOR | USB_REQUEST_RECIPIENT_DEVICE;
+    setup->bRequest = FTDI_SIO_SET_DATA;
+    setup->wValue = value;
+    setup->wIndex = serial->intf;
+    setup->wLength = 0;
+
+    return usbh_control_transfer(serial->hport, setup, NULL);
+}
+
+static int usbh_ftdi_set_latency_timer(struct usbh_serial *serial, uint16_t value)
+{
+    struct usb_setup_packet *setup;
+
+    if (!serial || !serial->hport) {
+        return -USB_ERR_INVAL;
+    }
+    setup = serial->hport->setup;
+
+    setup->bmRequestType = USB_REQUEST_DIR_OUT | USB_REQUEST_VENDOR | USB_REQUEST_RECIPIENT_DEVICE;
+    setup->bRequest = FTDI_SIO_SET_LATENCY_TIMER;
+    setup->wValue = value;
+    setup->wIndex = serial->intf;
+    setup->wLength = 0;
+
+    return usbh_control_transfer(serial->hport, setup, NULL);
+}
+
+static int usbh_ftdi_attach(struct usbh_serial *serial)
+{
+    uint16_t version;
+    uint8_t chip_type;
+    int ret;
+
+    version = serial->hport->device_desc.bcdDevice;
+
+    switch (version) {
+        case 0x400:
+            chip_type = FT232B;
+            break;
+        case 0x500:
+            chip_type = FT2232C;
+            break;
+        case 0x600:
+            chip_type = FT232R;
+            break;
+        case 0x700:
+            chip_type = FT2232H;
+            break;
+        case 0x900:
+            chip_type = FT232H;
+            break;
+
+        default:
+            USB_LOG_ERR("Unsupported FTDI chip version: 0x%04x\r\n", version);
+            return -USB_ERR_NOTSUPP;
+    }
+
+    USB_LOG_INFO("chip name: %s\r\n", ftdi_chip_name[chip_type]);
+
+    struct usbh_ftdi *ftdi_class = usb_osal_malloc(sizeof(struct usbh_ftdi));
+    if (!ftdi_class) {
+        USB_LOG_ERR("No memory for ftdi_class\r\n");
+        return -USB_ERR_NOMEM;
+    }
+    memset(ftdi_class, 0, sizeof(struct usbh_ftdi));
+    serial->priv = ftdi_class;
+
+    ftdi_class->chip_type = chip_type;
+    ret = usbh_ftdi_set_latency_timer(serial, 0x10);
+    if (ret < 0) {
+        goto errout;
+    }
+    return 0;
+errout:
+    serial->priv = NULL;
+    usb_osal_free(ftdi_class);
+    return ret;
+}
+
+static void usbh_ftdi_detach(struct usbh_serial *serial)
+{
+    if (serial && serial->priv) {
+        serial->priv = NULL;
+        usb_osal_free(serial->priv);
+    }
+}
+
+static int usbh_ftdi_set_flow_ctrl(struct usbh_serial *serial, bool hardctrl)
+{
+    struct usb_setup_packet *setup;
+
+    if (!serial || !serial->hport) {
+        return -USB_ERR_INVAL;
+    }
+    setup = serial->hport->setup;
+
+    setup->bmRequestType = USB_REQUEST_DIR_OUT | USB_REQUEST_VENDOR | USB_REQUEST_RECIPIENT_DEVICE;
+    setup->bRequest = FTDI_SIO_SET_FLOW_CTRL;
+    setup->wValue = hardctrl ? FTDI_SIO_RTS_CTS_HS : FTDI_SIO_DISABLE_FLOW_CTRL;
+    setup->wIndex = serial->intf;
+    setup->wLength = 0;
+
+    return usbh_control_transfer(serial->hport, setup, NULL);
+}
+
+static int usbh_ftdi_set_line_coding(struct usbh_serial *serial, struct cdc_line_coding *line_coding)
+{
+    int ret = usbh_ftdi_set_baudrate(serial, line_coding->dwDTERate);
+    if (ret < 0) {
+        return ret;
+    }
+    return usbh_ftdi_set_data_format(serial, line_coding->bDataBits, line_coding->bParityType, line_coding->bCharFormat, 0);
+}
+
+static int usbh_ftdi_set_line_state(struct usbh_serial *serial, bool dtr, bool rts)
+{
+    struct usb_setup_packet *setup;
+    uint16_t value = 0;
+
+    if (!serial || !serial->hport) {
+        return -USB_ERR_INVAL;
+    }
+    setup = serial->hport->setup;
+
+    value = ((dtr ? FTDI_SIO_SET_DTR_HIGH : FTDI_SIO_SET_DTR_LOW) | (rts ? FTDI_SIO_SET_RTS_HIGH : FTDI_SIO_SET_RTS_LOW));
+
+    setup->bmRequestType = USB_REQUEST_DIR_OUT | USB_REQUEST_VENDOR | USB_REQUEST_RECIPIENT_DEVICE;
+    setup->bRequest = FTDI_SIO_SET_MODEM_CTRL;
+    setup->wValue = value;
+    setup->wIndex = serial->intf;
+    setup->wLength = 0;
+
+    return usbh_control_transfer(serial->hport, setup, NULL);
+}
+
+static int usbh_ftdi_get_modem_status(struct usbh_serial *serial)
+{
+    struct usb_setup_packet *setup;
+    uint16_t status = 0;
+    int ret;
+
+    if (!serial || !serial->hport) {
+        return -USB_ERR_INVAL;
+    }
+
+    setup = serial->hport->setup;
+
+    setup->bmRequestType = USB_REQUEST_DIR_IN | USB_REQUEST_VENDOR | USB_REQUEST_RECIPIENT_DEVICE;
+    setup->bRequest = FTDI_SIO_GET_MODEM_STATUS;
+    setup->wValue = 0x0000;
+    setup->wIndex = serial->intf;
+    setup->wLength = 2;
+
+    ret = usbh_control_transfer(serial->hport, setup, serial->iobuffer);
+    if (ret < 0) {
+        return 0;
+    }
+
+    status = (serial->iobuffer[0] & FTDI_SIO_DSR_MASK ? USBH_SERIAL_TIOCM_DSR : 0) |
+             (serial->iobuffer[0] & FTDI_SIO_CTS_MASK ? USBH_SERIAL_TIOCM_CTS : 0) |
+             (serial->iobuffer[0] & FTDI_SIO_RI_MASK ? USBH_SERIAL_TIOCM_RI : 0) |
+             (serial->iobuffer[0] & FTDI_SIO_RLSD_MASK ? USBH_SERIAL_TIOCM_CD : 0) |
+             (serial->line_state & USBH_SERIAL_TIOCM_DTR ? USBH_SERIAL_TIOCM_DTR : 0) |
+             (serial->line_state & USBH_SERIAL_TIOCM_RTS ? USBH_SERIAL_TIOCM_RTS : 0);
+
+    return status;
+}
+
+static const struct usbh_serial_driver ftdi_driver = {
+    .driver_name = "ftdi",
+
+    .ignore_rx_header = 2,
+    .ignore_tx_header = 0,
+
+    .attach = usbh_ftdi_attach,
+    .detach = usbh_ftdi_detach,
+    .set_flow_control = usbh_ftdi_set_flow_ctrl,
+    .set_line_coding = usbh_ftdi_set_line_coding,
+    .get_line_coding = NULL,
+    .set_line_state = usbh_ftdi_set_line_state,
+    .get_modem_status = usbh_ftdi_get_modem_status,
+};
+
+static int usbh_ftdi_connect(struct usbh_hubport *hport, uint8_t intf)
+{
+    return usbh_serial_probe(hport, intf, &ftdi_driver) ? 0 : -USB_ERR_NOMEM;
+}
+
+static int usbh_ftdi_disconnect(struct usbh_hubport *hport, uint8_t intf)
+{
+    struct usbh_serial *serial = (struct usbh_serial *)hport->config.intf[intf].priv;
+
+    if (serial) {
+        usbh_serial_remove(serial);
+    }
+    return 0;
+}
+
+static const uint16_t ftdi_id_table[][2] = {
+    { 0x0403, 0x6001 },
+    { 0x0403, 0x6010 },
+    { 0x0403, 0x6014 },
+    { 0, 0 },
+};
+
+const struct usbh_class_driver ftdi_class_driver = {
+    .driver_name = "ftdi",
+    .connect = usbh_ftdi_connect,
+    .disconnect = usbh_ftdi_disconnect
+};
+
+CLASS_INFO_DEFINE const struct usbh_class_info ftdi_class_info = {
+    .match_flags = USB_CLASS_MATCH_VID_PID | USB_CLASS_MATCH_INTF_CLASS,
+    .bInterfaceClass = 0xff,
+    .bInterfaceSubClass = 0x00,
+    .bInterfaceProtocol = 0x00,
+    .id_table = ftdi_id_table,
+    .class_driver = &ftdi_class_driver
+};
--- a/class/serial/usbh_ftdi.h
+++ b/class/serial/usbh_ftdi.h
@@ -0,0 +1,341 @@
+/*
+ * Copyright (c) 2024 ~ 2025, sakumisu
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#ifndef USBH_FTDI_H
+#define USBH_FTDI_H
+
+#include "usb_cdc.h"
+
+#define FTDI_VID 0x0403 /* Vendor Id */
+
+/* FTDI device PIDs */
+#define FTDI_8U232AM_PID     0x6001 /* Similar device to SIO above */
+#define FTDI_8U232AM_ALT_PID 0x6006 /* FTDI's alternate PID for above */
+#define FTDI_8U2232C_PID     0x6010 /* Dual channel device */
+#define FTDI_4232H_PID       0x6011 /* Quad channel hi-speed device */
+#define FTDI_232H_PID        0x6014 /* Single channel hi-speed device */
+#define FTDI_FTX_PID         0x6015 /* FT-X series (FT201X, FT230X, FT231X, etc) */
+#define FTDI_FT2233HP_PID    0x6040 /* Dual channel hi-speed device with PD */
+#define FTDI_FT4233HP_PID    0x6041 /* Quad channel hi-speed device with PD */
+#define FTDI_FT2232HP_PID    0x6042 /* Dual channel hi-speed device with PD */
+#define FTDI_FT4232HP_PID    0x6043 /* Quad channel hi-speed device with PD */
+#define FTDI_FT233HP_PID     0x6044 /* Dual channel hi-speed device with PD */
+#define FTDI_FT232HP_PID     0x6045 /* Dual channel hi-speed device with PD */
+#define FTDI_FT4232HA_PID    0x6048 /* Quad channel automotive grade hi-speed device */
+#define FTDI_SIO_PID         0x8372 /* Product Id SIO application of 8U100AX */
+#define FTDI_232RL_PID       0xFBFA /* Product ID for FT232RL */
+
+/* Requests */
+#define FTDI_SIO_RESET             0x00 /* Reset the port */
+#define FTDI_SIO_SET_MODEM_CTRL    0x01 /* Set the modem control register */
+#define FTDI_SIO_SET_FLOW_CTRL     0x02 /* Set flow control register */
+#define FTDI_SIO_SET_BAUDRATE      0x03 /* Set baud rate */
+#define FTDI_SIO_SET_DATA          0x04 /* Set the data characteristics of the port */
+#define FTDI_SIO_GET_MODEM_STATUS  0x05
+#define FTDI_SIO_SET_EVENT_CHAR    0x06
+#define FTDI_SIO_SET_ERROR_CHAR    0x07
+#define FTDI_SIO_SET_LATENCY_TIMER 0x09
+#define FTDI_SIO_GET_LATENCY_TIMER 0x0A
+#define FTDI_SIO_SET_BITMODE       0x0B
+#define FTDI_SIO_READ_PINS         0x0C
+#define FTDI_SIO_READ_EEPROM       0x90
+#define FTDI_SIO_WRITE_EEPROM      0x91
+#define FTDI_SIO_ERASE_EEPROM      0x92
+
+/* Channel indices for FT2232, FT2232H and FT4232H devices */
+#define FTDI_SIO_CHANNEL_A 1
+#define FTDI_SIO_CHANNEL_B 2
+#define FTDI_SIO_CHANNEL_C 3
+#define FTDI_SIO_CHANNEL_D 4
+
+/*
+ * BmRequestType:  0100 0000B
+ * bRequest:       FTDI_SIO_RESET
+ * wValue:         Control Value
+ *                   0 = Reset SIO
+ *                   1 = Purge RX buffer
+ *                   2 = Purge TX buffer
+ * wIndex:         Port
+ * wLength:        0
+ * Data:           None
+ *
+ * The Reset SIO command has this effect:
+ *
+ *    Sets flow control set to 'none'
+ *    Event char = $0D
+ *    Event trigger = disabled
+ *    Purge RX buffer
+ *    Purge TX buffer
+ *    Clear DTR
+ *    Clear RTS
+ *    baud and data format not reset
+ *
+ * The Purge RX and TX buffer commands affect nothing except the buffers
+ *
+   */
+
+#define FTDI_SIO_RESET_SIO      0
+#define FTDI_SIO_RESET_PURGE_RX 1
+#define FTDI_SIO_RESET_PURGE_TX 2
+
+/*
+ * BmRequestType:  0100 0000B
+ * bRequest:       FTDI_SIO_SET_BAUDRATE
+ * wValue:         BaudDivisor value - see below
+ * wIndex:         Port
+ * wLength:        0
+ * Data:           None
+ * The BaudDivisor values are calculated as follows:
+ * - BaseClock is either 12000000 or 48000000 depending on the device.
+ *   FIXME: I wish I knew how to detect old chips to select proper base clock!
+ * - BaudDivisor is a fixed point number encoded in a funny way.
+ *   (--WRONG WAY OF THINKING--)
+ *   BaudDivisor is a fixed point number encoded with following bit weighs:
+ *   (-2)(-1)(13..0). It is a radical with a denominator of 4, so values
+ *   end with 0.0 (00...), 0.25 (10...), 0.5 (01...), and 0.75 (11...).
+ *   (--THE REALITY--)
+ *   The both-bits-set has quite different meaning from 0.75 - the chip
+ *   designers have decided it to mean 0.125 instead of 0.75.
+ *   This info looked up in FTDI application note "FT8U232 DEVICES \ Data Rates
+ *   and Flow Control Consideration for USB to RS232".
+ * - BaudDivisor = (BaseClock / 16) / BaudRate, where the (=) operation should
+ *   automagically re-encode the resulting value to take fractions into
+ *   consideration.
+ * As all values are integers, some bit twiddling is in order:
+ *   BaudDivisor = (BaseClock / 16 / BaudRate) |
+ *   (((BaseClock / 2 / BaudRate) & 4) ? 0x4000    // 0.5
+ *    : ((BaseClock / 2 / BaudRate) & 2) ? 0x8000  // 0.25
+ *    : ((BaseClock / 2 / BaudRate) & 1) ? 0xc000  // 0.125
+ *    : 0)
+ *
+ * For the FT232BM, a 17th divisor bit was introduced to encode the multiples
+ * of 0.125 missing from the FT8U232AM.  Bits 16 to 14 are coded as follows
+ * (the first four codes are the same as for the FT8U232AM, where bit 16 is
+ * always 0):
+ *   000 - add .000 to divisor
+ *   001 - add .500 to divisor
+ *   010 - add .250 to divisor
+ *   011 - add .125 to divisor
+ *   100 - add .375 to divisor
+ *   101 - add .625 to divisor
+ *   110 - add .750 to divisor
+ *   111 - add .875 to divisor
+ * Bits 15 to 0 of the 17-bit divisor are placed in the urb value.  Bit 16 is
+ * placed in bit 0 of the urb index.
+ *
+ * Note that there are a couple of special cases to support the highest baud
+ * rates.  If the calculated divisor value is 1, this needs to be replaced with
+ * 0.  Additionally for the FT232BM, if the calculated divisor value is 0x4001
+ * (1.5), this needs to be replaced with 0x0001 (1) (but this divisor value is
+ * not supported by the FT8U232AM).
+ */
+
+enum ftdi_sio_baudrate {
+    ftdi_sio_b300 = 0,
+    ftdi_sio_b600 = 1,
+    ftdi_sio_b1200 = 2,
+    ftdi_sio_b2400 = 3,
+    ftdi_sio_b4800 = 4,
+    ftdi_sio_b9600 = 5,
+    ftdi_sio_b19200 = 6,
+    ftdi_sio_b38400 = 7,
+    ftdi_sio_b57600 = 8,
+    ftdi_sio_b115200 = 9
+};
+
+/*
+ * BmRequestType:  0100 0000B
+ * bRequest:       FTDI_SIO_SET_DATA
+ * wValue:         Data characteristics (see below)
+ * wIndex:         Port
+ * wLength:        0
+ * Data:           No
+ *
+ * Data characteristics
+ *
+ *   B0..7   Number of data bits
+ *   B8..10  Parity
+ *           0 = None
+ *           1 = Odd
+ *           2 = Even
+ *           3 = Mark
+ *           4 = Space
+ *   B11..13 Stop Bits
+ *           0 = 1
+ *           1 = 1.5
+ *           2 = 2
+ *   B14
+ *           1 = TX ON (break)
+ *           0 = TX OFF (normal state)
+ *   B15 Reserved
+ *
+ */
+
+#define FTDI_SIO_SET_DATA_PARITY_NONE  (0x0 << 8)
+#define FTDI_SIO_SET_DATA_PARITY_ODD   (0x1 << 8)
+#define FTDI_SIO_SET_DATA_PARITY_EVEN  (0x2 << 8)
+#define FTDI_SIO_SET_DATA_PARITY_MARK  (0x3 << 8)
+#define FTDI_SIO_SET_DATA_PARITY_SPACE (0x4 << 8)
+#define FTDI_SIO_SET_DATA_STOP_BITS_1  (0x0 << 11)
+#define FTDI_SIO_SET_DATA_STOP_BITS_15 (0x1 << 11)
+#define FTDI_SIO_SET_DATA_STOP_BITS_2  (0x2 << 11)
+#define FTDI_SIO_SET_BREAK             (0x1 << 14)
+
+/*
+ * BmRequestType:   0100 0000B
+ * bRequest:        FTDI_SIO_MODEM_CTRL
+ * wValue:          ControlValue (see below)
+ * wIndex:          Port
+ * wLength:         0
+ * Data:            None
+ *
+ * NOTE: If the device is in RTS/CTS flow control, the RTS set by this
+ * command will be IGNORED without an error being returned
+ * Also - you can not set DTR and RTS with one control message
+ *
+ * ControlValue
+ * B0    DTR state
+ *          0 = reset
+ *          1 = set
+ * B1    RTS state
+ *          0 = reset
+ *          1 = set
+ * B2..7 Reserved
+ * B8    DTR state enable
+ *          0 = ignore
+ *          1 = use DTR state
+ * B9    RTS state enable
+ *          0 = ignore
+ *          1 = use RTS state
+ * B10..15 Reserved
+ *
+ */
+
+#define FTDI_SIO_SET_DTR_MASK 0x1
+#define FTDI_SIO_SET_DTR_HIGH ((FTDI_SIO_SET_DTR_MASK << 8) | 1)
+#define FTDI_SIO_SET_DTR_LOW  ((FTDI_SIO_SET_DTR_MASK << 8) | 0)
+#define FTDI_SIO_SET_RTS_MASK 0x2
+#define FTDI_SIO_SET_RTS_HIGH ((FTDI_SIO_SET_RTS_MASK << 8) | 2)
+#define FTDI_SIO_SET_RTS_LOW  ((FTDI_SIO_SET_RTS_MASK << 8) | 0)
+
+/*
+ *   BmRequestType:  0100 0000b
+ *   bRequest:       FTDI_SIO_SET_FLOW_CTRL
+ *   wValue:         Xoff/Xon
+ *   wIndex:         Protocol/Port - hIndex is protocol / lIndex is port
+ *   wLength:        0
+ *   Data:           None
+ *
+ * hIndex protocol is:
+ *   B0 Output handshaking using RTS/CTS
+ *       0 = disabled
+ *       1 = enabled
+ *   B1 Output handshaking using DTR/DSR
+ *       0 = disabled
+ *       1 = enabled
+ *   B2 Xon/Xoff handshaking
+ *       0 = disabled
+ *       1 = enabled
+ *
+ * A value of zero in the hIndex field disables handshaking
+ *
+ * If Xon/Xoff handshaking is specified, the hValue field should contain the
+ * XOFF character and the lValue field contains the XON character.
+ */
+
+#define FTDI_SIO_DISABLE_FLOW_CTRL 0x0
+#define FTDI_SIO_RTS_CTS_HS        (0x1 << 8)
+#define FTDI_SIO_DTR_DSR_HS        (0x2 << 8)
+#define FTDI_SIO_XON_XOFF_HS       (0x4 << 8)
+
+/*
+ *   BmRequestType:   1100 0000b
+ *   bRequest:        FTDI_SIO_GET_MODEM_STATUS
+ *   wValue:          zero
+ *   wIndex:          Port
+ *   wLength:         1
+ *   Data:            Status
+ *
+ * One byte of data is returned
+ * B0..3 0
+ * B4    CTS
+ *         0 = inactive
+ *         1 = active
+ * B5    DSR
+ *         0 = inactive
+ *         1 = active
+ * B6    Ring Indicator (RI)
+ *         0 = inactive
+ *         1 = active
+ * B7    Receive Line Signal Detect (RLSD)
+ *         0 = inactive
+ *         1 = active
+ */
+
+#define FTDI_SIO_CTS_MASK  0x10
+#define FTDI_SIO_DSR_MASK  0x20
+#define FTDI_SIO_RI_MASK   0x40
+#define FTDI_SIO_RLSD_MASK 0x80
+
+/* Possible bitmodes for FTDI_SIO_SET_BITMODE_REQUEST */
+#define FTDI_SIO_BITMODE_RESET 0x00
+#define FTDI_SIO_BITMODE_CBUS  0x20
+
+/*
+ * IN Endpoint
+ *
+ * The device reserves the first two bytes of data on this endpoint to contain
+ * the current values of the modem and line status registers. In the absence of
+ * data, the device generates a message consisting of these two status bytes
+ * every 40 ms
+ *
+ * Byte 0: Modem Status
+ *
+ * Offset	Description
+ * B0	Reserved - must be 1
+ * B1	Reserved - must be 0
+ * B2	Reserved - must be 0
+ * B3	Reserved - must be 0
+ * B4	Clear to Send (CTS)
+ * B5	Data Set Ready (DSR)
+ * B6	Ring Indicator (RI)
+ * B7	Receive Line Signal Detect (RLSD)
+ *
+ * Byte 1: Line Status
+ *
+ * Offset	Description
+ * B0	Data Ready (DR)
+ * B1	Overrun Error (OE)
+ * B2	Parity Error (PE)
+ * B3	Framing Error (FE)
+ * B4	Break Interrupt (BI)
+ * B5	Transmitter Holding Register (THRE)
+ * B6	Transmitter Empty (TEMT)
+ * B7	Error in RCVR FIFO
+ *
+ */
+#define FTDI_RS0_CTS  (1 << 4)
+#define FTDI_RS0_DSR  (1 << 5)
+#define FTDI_RS0_RI   (1 << 6)
+#define FTDI_RS0_RLSD (1 << 7)
+
+#define FTDI_RS_DR   1
+#define FTDI_RS_OE   (1 << 1)
+#define FTDI_RS_PE   (1 << 2)
+#define FTDI_RS_FE   (1 << 3)
+#define FTDI_RS_BI   (1 << 4)
+#define FTDI_RS_THRE (1 << 5)
+#define FTDI_RS_TEMT (1 << 6)
+#define FTDI_RS_FIFO (1 << 7)
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* USBH_FTDI_H */
--- a/class/serial/usbh_gsm.c
+++ b/class/serial/usbh_gsm.c
@@ -0,0 +1,131 @@
+/*
+ * Copyright (c) 2025, sakumisu
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#include "usbh_core.h"
+#include "usbh_serial.h"
+
+#undef USB_DBG_TAG
+#define USB_DBG_TAG "usbh_gsm"
+#include "usb_log.h"
+
+struct usbh_gsm {
+    struct usb_endpoint_descriptor *intin;
+    struct usbh_urb intin_urb;
+    struct usb_osal_timer *modem_timer;
+    uint16_t modem_status;
+};
+
+static int usbh_gsm_attach(struct usbh_serial *serial)
+{
+    struct usb_endpoint_descriptor *ep_desc;
+
+    struct usbh_gsm *gsm_class = usb_osal_malloc(sizeof(struct usbh_gsm));
+    if (!gsm_class) {
+        USB_LOG_ERR("No memory for gsm_class\r\n");
+        return -USB_ERR_NOMEM;
+    }
+    memset(gsm_class, 0, sizeof(struct usbh_gsm));
+    serial->priv = gsm_class;
+
+    for (uint8_t i = 0; i < serial->hport->config.intf[serial->intf].altsetting[0].intf_desc.bNumEndpoints; i++) {
+        ep_desc = &serial->hport->config.intf[serial->intf].altsetting[0].ep[i].ep_desc;
+
+        if (USB_GET_ENDPOINT_TYPE(ep_desc->bmAttributes) == USB_ENDPOINT_TYPE_INTERRUPT) {
+            if (ep_desc->bEndpointAddress & 0x80) {
+                USBH_EP_INIT(gsm_class->intin, ep_desc);
+                break;
+            } else {
+            }
+        }
+    }
+
+    if (!gsm_class->intin) {
+        USB_LOG_WRN("Do not find interrupt endpoint, so disable modem status monitor\r\n");
+    }
+    return 0;
+}
+
+static void usbh_gsm_detach(struct usbh_serial *serial)
+{
+    struct usbh_gsm *gsm_class;
+
+    if (!serial || !serial->priv) {
+        return;
+    }
+
+    gsm_class = (struct usbh_gsm *)serial->priv;
+    if (gsm_class->intin) {
+        usbh_kill_urb(&gsm_class->intin_urb);
+    }
+    serial->priv = NULL;
+    usb_osal_free(gsm_class);
+}
+
+static int usbh_gsm_set_line_coding(struct usbh_serial *serial, struct cdc_line_coding *line_coding)
+{
+    return 0;
+}
+
+static int usbh_gsm_set_line_state(struct usbh_serial *serial, bool dtr, bool rts)
+{
+    return 0;
+}
+
+static const struct usbh_serial_driver gsm_driver = {
+    .driver_name = "gsm",
+
+    .ignore_rx_header = 0,
+    .ignore_tx_header = 0,
+
+    .attach = usbh_gsm_attach,
+    .detach = usbh_gsm_detach,
+    .set_flow_control = NULL,
+    .set_line_coding = usbh_gsm_set_line_coding,
+    .get_line_coding = NULL,
+    .set_line_state = usbh_gsm_set_line_state,
+    .get_modem_status = NULL,
+};
+
+static int usbh_gsm_connect(struct usbh_hubport *hport, uint8_t intf)
+{
+    return usbh_serial_probe(hport, intf, &gsm_driver) ? 0 : -USB_ERR_NOMEM;
+}
+
+static int usbh_gsm_disconnect(struct usbh_hubport *hport, uint8_t intf)
+{
+    struct usbh_serial *serial = (struct usbh_serial *)hport->config.intf[intf].priv;
+
+    if (serial) {
+        usbh_serial_remove(serial);
+    }
+    return 0;
+}
+
+const struct usbh_class_driver gsm_class_driver = {
+    .driver_name = "gsm",
+    .connect = usbh_gsm_connect,
+    .disconnect = usbh_gsm_disconnect
+};
+
+static const uint16_t gsm_id_table[][2] = {
+    { 0x2C7C, 0x0120 }, /* Quectel EC20 */
+    { 0x2C7C, 0x0121 }, /* Quectel EC21 */
+    { 0x2C7C, 0x0125 }, /* Quectel EC25 */
+    { 0x2C7C, 0x0191 }, /* Quectel EG91 */
+    { 0x2C7C, 0x0195 }, /* Quectel EG95 */
+    { 0x2C7C, 0x6002 }, /* Quectel EC200/EC600/EC800/EG91x */
+    { 0x1E0E, 0x9001 }, /* SIMCOM SIM7600 */
+    { 0x2ECC, 0x3012 }, /* Chinamobile ML307R */
+    { 0, 0 },
+};
+
+CLASS_INFO_DEFINE const struct usbh_class_info gsm_class_info = {
+    .match_flags = USB_CLASS_MATCH_VID_PID | USB_CLASS_MATCH_INTF_CLASS | USB_CLASS_MATCH_INTF_SUBCLASS | USB_CLASS_MATCH_INTF_PROTOCOL,
+    .bInterfaceClass = 0xff,
+    .bInterfaceSubClass = 0x00,
+    .bInterfaceProtocol = 0x00,
+    .id_table = gsm_id_table,
+    .class_driver = &gsm_class_driver
+};
--- a/class/serial/usbh_pl2303.c
+++ b/class/serial/usbh_pl2303.c
@@ -0,0 +1,726 @@
+/*
+ * Copyright (c) 2024 ~ 2025, sakumisu
+ * Copyright (c) 2024, Derek Konigsberg
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#include "usbh_core.h"
+#include "usbh_serial.h"
+#include "usbh_pl2303.h"
+
+#undef USB_DBG_TAG
+#define USB_DBG_TAG "usbh_pl2303"
+#include "usb_log.h"
+
+#define UART_STATE_INDEX          8
+#define UART_STATE_MSR_MASK       0x8b
+#define UART_STATE_TRANSIENT_MASK 0x74
+#define UART_DCD                  0x01
+#define UART_DSR                  0x02
+#define UART_BREAK_ERROR          0x04
+#define UART_RING                 0x08
+#define UART_FRAME_ERROR          0x10
+#define UART_PARITY_ERROR         0x20
+#define UART_OVERRUN_ERROR        0x40
+#define UART_CTS                  0x80
+
+struct pl2303_type_data {
+    const char *name;
+    uint32_t max_baud_rate;
+    unsigned long quirks;
+    unsigned int no_autoxonxoff : 1;
+    unsigned int no_divisors    : 1;
+    unsigned int alt_divisors   : 1;
+};
+
+enum pl2303_type {
+    TYPE_H,
+    TYPE_HX,
+    TYPE_TA,
+    TYPE_TB,
+    TYPE_HXD,
+    TYPE_HXN,
+    TYPE_COUNT
+};
+
+struct usbh_pl2303 {
+    enum pl2303_type chip_type;
+    uint32_t quirks;
+    struct usb_endpoint_descriptor *intin;
+    struct usbh_urb intin_urb;
+    struct usb_osal_timer *modem_timer;
+    uint16_t modem_status;
+};
+
+static const struct pl2303_type_data pl2303_type_data[TYPE_COUNT] = {
+    [TYPE_H] = {
+        .name = "PL2303H",
+        .max_baud_rate = 1228800,
+        .quirks = PL2303_QUIRK_LEGACY,
+        .no_autoxonxoff = true,
+    },
+    [TYPE_HX] = {
+        .name = "PL2303HX",
+        .max_baud_rate = 6000000,
+    },
+    [TYPE_TA] = {
+        .name = "PL2303TA",
+        .max_baud_rate = 6000000,
+        .alt_divisors = true,
+    },
+    [TYPE_TB] = {
+        .name = "PL2303TB",
+        .max_baud_rate = 12000000,
+        .alt_divisors = true,
+    },
+    [TYPE_HXD] = {
+        .name = "PL2303HXD",
+        .max_baud_rate = 12000000,
+    },
+    [TYPE_HXN] = {
+        .name = "PL2303G",
+        .max_baud_rate = 12000000,
+        .no_divisors = true,
+    },
+};
+
+/*
+ * Returns the nearest supported baud rate that can be set directly without
+ * using divisors.
+ */
+static uint32_t pl2303_get_supported_baud_rate(uint32_t baud)
+{
+    static const uint32_t baud_sup[] = {
+        75, 150, 300, 600, 1200, 1800, 2400, 3600, 4800, 7200, 9600,
+        14400, 19200, 28800, 38400, 57600, 115200, 230400, 460800,
+        614400, 921600, 1228800, 2457600, 3000000, 6000000
+    };
+
+    unsigned i;
+
+    for (i = 0; i < ARRAY_SIZE(baud_sup); ++i) {
+        if (baud_sup[i] > baud)
+            break;
+    }
+
+    if (i == ARRAY_SIZE(baud_sup))
+        baud = baud_sup[i - 1];
+    else if (i > 0 && (baud_sup[i] - baud) > (baud - baud_sup[i - 1]))
+        baud = baud_sup[i - 1];
+    else
+        baud = baud_sup[i];
+
+    return baud;
+}
+
+/*
+ * NOTE: If unsupported baud rates are set directly, the PL2303 seems to
+ *       use 9600 baud.
+ */
+static uint32_t pl2303_encode_baud_rate_direct(unsigned char buf[4],
+                                               uint32_t baud)
+{
+    memcpy(buf, &baud, 4);
+
+    return baud;
+}
+
+static uint32_t pl2303_encode_baud_rate_divisor_alt(unsigned char buf[4],
+                                                    uint32_t baud)
+{
+    unsigned int baseline, mantissa, exponent;
+
+    /*
+     * Apparently, for the TA version the formula is:
+     *   baudrate = 12M * 32 / (mantissa * 2^exponent)
+     * where
+     *   mantissa = buf[10:0]
+     *   exponent = buf[15:13 16]
+     */
+    baseline = 12000000 * 32;
+    mantissa = baseline / baud;
+    if (mantissa == 0)
+        mantissa = 1; /* Avoid dividing by zero if baud > 32*12M. */
+    exponent = 0;
+    while (mantissa >= 2048) {
+        if (exponent < 15) {
+            mantissa >>= 1; /* divide by 2 */
+            exponent++;
+        } else {
+            /* Exponent is maxed. Trim mantissa and leave. */
+            mantissa = 2047;
+            break;
+        }
+    }
+
+    buf[3] = 0x80;
+    buf[2] = exponent & 0x01;
+    buf[1] = (exponent & ~0x01) << 4 | mantissa >> 8;
+    buf[0] = mantissa & 0xff;
+
+    /* Calculate and return the exact baud rate. */
+    baud = (baseline / mantissa) >> exponent;
+
+    return baud;
+}
+
+static uint32_t pl2303_encode_baud_rate_divisor(unsigned char buf[4],
+                                                uint32_t baud)
+{
+    unsigned int baseline, mantissa, exponent;
+
+    /*
+    * Apparently the formula is:
+    *   baudrate = 12M * 32 / (mantissa * 4^exponent)
+    * where
+    *   mantissa = buf[8:0]
+    *   exponent = buf[11:9]
+    */
+    baseline = 12000000 * 32;
+    mantissa = baseline / baud;
+    if (mantissa == 0)
+        mantissa = 1; /* Avoid dividing by zero if baud > 32*12M. */
+    exponent = 0;
+    while (mantissa >= 512) {
+        if (exponent < 7) {
+            mantissa >>= 2; /* divide by 4 */
+            exponent++;
+        } else {
+            /* Exponent is maxed. Trim mantissa and leave. */
+            mantissa = 511;
+            break;
+        }
+    }
+
+    buf[3] = 0x80;
+    buf[2] = 0;
+    buf[1] = exponent << 1 | mantissa >> 8;
+    buf[0] = mantissa & 0xff;
+
+    /* Calculate and return the exact baud rate. */
+    baud = (baseline / mantissa) >> (exponent << 1);
+
+    return baud;
+}
+
+static int pl2303_vendor_write(struct usbh_serial *serial, uint16_t wValue, uint16_t wIndex)
+{
+    struct usb_setup_packet *setup;
+    struct usbh_pl2303 *pl2303_class;
+
+    if (!serial || !serial->hport || !serial->priv) {
+        return -USB_ERR_INVAL;
+    }
+    setup = serial->hport->setup;
+    pl2303_class = (struct usbh_pl2303 *)serial->priv;
+
+    setup->bmRequestType = USB_REQUEST_DIR_OUT | USB_REQUEST_VENDOR | USB_REQUEST_RECIPIENT_DEVICE;
+    setup->bRequest = pl2303_class->chip_type == TYPE_HXN ? PL2303_VENDOR_WRITE_NREQUEST : PL2303_VENDOR_WRITE_REQUEST;
+    setup->wValue = wValue;
+    setup->wIndex = wIndex;
+    setup->wLength = 0;
+
+    return usbh_control_transfer(serial->hport, setup, NULL);
+}
+
+static int pl2303_vendor_read(struct usbh_serial *serial, uint16_t wValue, uint8_t *data)
+{
+    struct usb_setup_packet *setup;
+    struct usbh_pl2303 *pl2303_class;
+    int ret;
+
+    if (!serial || !serial->hport || !serial->priv) {
+        return -USB_ERR_INVAL;
+    }
+    setup = serial->hport->setup;
+    pl2303_class = (struct usbh_pl2303 *)serial->priv;
+
+    setup->bmRequestType = USB_REQUEST_DIR_IN | USB_REQUEST_VENDOR | USB_REQUEST_RECIPIENT_DEVICE;
+    setup->bRequest = pl2303_class->chip_type == TYPE_HXN ? PL2303_VENDOR_READ_NREQUEST : PL2303_VENDOR_READ_REQUEST;
+    setup->wValue = wValue;
+    setup->wIndex = 0;
+    setup->wLength = 1;
+
+    ret = usbh_control_transfer(serial->hport, setup, serial->iobuffer);
+    if (ret < 0) {
+        return ret;
+    }
+    memcpy(data, serial->iobuffer, 1);
+
+    return ret;
+}
+
+static bool pl2303_supports_hx_status(struct usbh_serial *serial)
+{
+    int ret;
+    uint8_t buf;
+
+    ret = pl2303_vendor_read(serial, PL2303_READ_TYPE_HX_STATUS, &buf);
+    if (ret < 0) {
+        return false;
+    }
+
+    return true;
+}
+
+static bool pl2303_is_hxd_clone(struct usbh_serial *serial)
+{
+    struct usb_setup_packet *setup;
+    int ret;
+
+    if (!serial || !serial->hport) {
+        return -USB_ERR_INVAL;
+    }
+    setup = serial->hport->setup;
+
+    setup->bmRequestType = USB_REQUEST_DIR_IN | USB_REQUEST_CLASS | USB_REQUEST_RECIPIENT_DEVICE;
+    setup->bRequest = CDC_REQUEST_GET_LINE_CODING;
+    setup->wValue = 0;
+    setup->wIndex = 0;
+    setup->wLength = 7;
+
+    ret = usbh_control_transfer(serial->hport, setup, serial->iobuffer);
+    if (ret < 0) {
+        return false;
+    }
+    return true;
+}
+
+static int pl2303_update_reg(struct usbh_serial *serial, uint8_t reg, uint8_t mask, uint8_t val)
+{
+    int ret;
+    uint8_t buf[1];
+    struct usbh_pl2303 *pl2303_class;
+
+    if (!serial || !serial->hport || !serial->priv) {
+        return -USB_ERR_INVAL;
+    }
+
+    pl2303_class = (struct usbh_pl2303 *)serial->priv;
+
+    if (pl2303_class->chip_type == TYPE_HXN)
+        ret = pl2303_vendor_read(serial, reg, buf);
+    else
+        ret = pl2303_vendor_read(serial, reg | 0x80, buf);
+
+    if (ret < 0) {
+        return ret;
+    }
+
+    *buf &= ~mask;
+    *buf |= val & mask;
+
+    return pl2303_vendor_write(serial, reg, *buf);
+}
+
+static int usbh_pl2303_get_chiptype(struct usbh_serial *serial)
+{
+    if (serial->hport->device_desc.bDeviceClass == 0x02) {
+        return TYPE_H; /* variant 0 */
+    }
+
+    if (serial->hport->device_desc.bMaxPacketSize0 != 0x40) {
+        if (serial->hport->device_desc.bDeviceClass == 0x00 || serial->hport->device_desc.bDeviceClass == 0xff)
+            return TYPE_H; /* variant 1 */
+
+        return TYPE_H; /* variant 0 */
+    }
+
+    switch (serial->hport->device_desc.bcdUSB) {
+        case 0x101:
+            /* USB 1.0.1? Let's assume they meant 1.1... */
+        case 0x110:
+            switch (serial->hport->device_desc.bcdDevice) {
+                case 0x300:
+                    return TYPE_HX;
+                case 0x400:
+                    return TYPE_HXD;
+                default:
+                    return TYPE_HX;
+            }
+            break;
+        case 0x200:
+            switch (serial->hport->device_desc.bcdDevice) {
+                case 0x100: /* GC */
+                case 0x105:
+                    return TYPE_HXN;
+                case 0x300: /* GT / TA */
+                    if (pl2303_supports_hx_status(serial))
+                        return TYPE_TA;
+                    __attribute__((fallthrough));
+                case 0x305:
+                case 0x400: /* GL */
+                case 0x405:
+                    return TYPE_HXN;
+                case 0x500: /* GE / TB */
+                    if (pl2303_supports_hx_status(serial))
+                        return TYPE_TB;
+                    __attribute__((fallthrough));
+                case 0x505:
+                case 0x600: /* GS */
+                case 0x605:
+                case 0x700: /* GR */
+                case 0x705:
+                case 0x905:  /* GT-2AB */
+                case 0x1005: /* GC-Q20 */
+                    return TYPE_HXN;
+            }
+            break;
+    }
+
+    USB_LOG_ERR("Unsupported PL2303 Device\r\n");
+    return -USB_ERR_NOTSUPP;
+}
+
+static int usbh_pl2303_attach(struct usbh_serial *serial)
+{
+    struct usbh_pl2303 *pl2303_class;
+    struct usb_endpoint_descriptor *ep_desc;
+    uint8_t type;
+    int ret;
+
+    ret = usbh_pl2303_get_chiptype(serial);
+    if (ret < 0) {
+        return ret;
+    }
+
+    pl2303_class = usb_osal_malloc(sizeof(struct usbh_pl2303));
+    if (pl2303_class == NULL) {
+        USB_LOG_ERR("Fail to alloc pl2303_class\r\n");
+        return -USB_ERR_NOMEM;
+    }
+    memset(pl2303_class, 0, sizeof(struct usbh_pl2303));
+    serial->priv = pl2303_class;
+
+    for (uint8_t i = 0; i < serial->hport->config.intf[serial->intf].altsetting[0].intf_desc.bNumEndpoints; i++) {
+        ep_desc = &serial->hport->config.intf[serial->intf].altsetting[0].ep[i].ep_desc;
+
+        if (USB_GET_ENDPOINT_TYPE(ep_desc->bmAttributes) == USB_ENDPOINT_TYPE_INTERRUPT) {
+            if (ep_desc->bEndpointAddress & 0x80) {
+                USBH_EP_INIT(pl2303_class->intin, ep_desc);
+                break;
+            } else {
+            }
+        }
+    }
+
+    if (!pl2303_class->intin) {
+        USB_LOG_ERR("Failed to find interrupt endpoint\r\n");
+        ret = -USB_ERR_NODEV;
+        goto errout;
+    }
+
+    type = (uint8_t)ret;
+    pl2303_class->chip_type = type;
+    pl2303_class->quirks = pl2303_type_data[pl2303_class->chip_type].quirks;
+
+    USB_LOG_INFO("chip type: %s\r\n", pl2303_type_data[pl2303_class->chip_type].name);
+
+    if (type == TYPE_HXD && pl2303_is_hxd_clone(serial)) {
+        pl2303_class->quirks |= PL2303_QUIRK_NO_BREAK_GETLINE;
+    }
+
+    if (type != TYPE_HXN) {
+        uint8_t buf[1];
+        ret = pl2303_vendor_read(serial, 0x8484, buf);
+        ret |= pl2303_vendor_write(serial, 0x0404, 0);
+        ret |= pl2303_vendor_read(serial, 0x8484, buf);
+        ret |= pl2303_vendor_read(serial, 0x8383, buf);
+        ret |= pl2303_vendor_read(serial, 0x8484, buf);
+        ret |= pl2303_vendor_write(serial, 0x0404, 1);
+        ret |= pl2303_vendor_read(serial, 0x8484, buf);
+        ret |= pl2303_vendor_read(serial, 0x8383, buf);
+        ret |= pl2303_vendor_write(serial, 0, 1);
+        ret |= pl2303_vendor_write(serial, 1, 0);
+        if (pl2303_class->quirks & PL2303_QUIRK_LEGACY)
+            ret |= pl2303_vendor_write(serial, 2, 0x24);
+        else
+            ret |= pl2303_vendor_write(serial, 2, 0x44);
+    } else {
+        ret = 0;
+    }
+
+    if (ret < 0) {
+        USB_LOG_ERR("pl2303 init failed\r\n");
+        goto errout;
+    }
+
+    return 0;
+errout:
+    serial->priv = NULL;
+    usb_osal_free(pl2303_class);
+    return ret;
+}
+
+static void usbh_pl2303_detach(struct usbh_serial *serial)
+{
+    struct usbh_pl2303 *pl2303_class;
+
+    if (!serial || !serial->priv) {
+        return;
+    }
+
+    pl2303_class = (struct usbh_pl2303 *)serial->priv;
+    if (pl2303_class->intin) {
+        usbh_kill_urb(&pl2303_class->intin_urb);
+    }
+    serial->priv = NULL;
+    usb_osal_free(pl2303_class);
+}
+
+static int usbh_pl2303_set_flow_ctrl(struct usbh_serial *serial, bool hardctrl)
+{
+    struct usbh_pl2303 *pl2303_class;
+
+    if (!serial || !serial->hport || !serial->priv) {
+        return -USB_ERR_INVAL;
+    }
+
+    pl2303_class = (struct usbh_pl2303 *)serial->priv;
+
+    if (hardctrl) {
+        if (pl2303_class->quirks & PL2303_QUIRK_LEGACY) {
+            return pl2303_update_reg(serial, 0, PL2303_FLOWCTRL_MASK, 0x40);
+        } else if (pl2303_class->chip_type == TYPE_HXN) {
+            return pl2303_update_reg(serial, PL2303_HXN_FLOWCTRL_REG,
+                                     PL2303_HXN_FLOWCTRL_MASK,
+                                     PL2303_HXN_FLOWCTRL_RTS_CTS);
+        } else {
+            return pl2303_update_reg(serial, 0, PL2303_FLOWCTRL_MASK, 0x60);
+        }
+    } else {
+        if (pl2303_class->chip_type == TYPE_HXN) {
+            return pl2303_update_reg(serial, PL2303_HXN_FLOWCTRL_REG,
+                                     PL2303_HXN_FLOWCTRL_MASK,
+                                     PL2303_HXN_FLOWCTRL_NONE);
+        } else {
+            return pl2303_update_reg(serial, 0, PL2303_FLOWCTRL_MASK, 0);
+        }
+    }
+}
+
+static int usbh_pl2303_set_line_coding(struct usbh_serial *serial, struct cdc_line_coding *line_coding)
+{
+    struct usb_setup_packet *setup;
+    struct usbh_pl2303 *pl2303_class;
+    uint32_t baud;
+    uint32_t baud_sup;
+    uint8_t buf[7];
+
+    if (!serial || !serial->hport || !serial->priv) {
+        return -USB_ERR_INVAL;
+    }
+
+    setup = serial->hport->setup;
+    pl2303_class = (struct usbh_pl2303 *)serial->priv;
+
+    setup->bmRequestType = USB_REQUEST_DIR_OUT | USB_REQUEST_CLASS | USB_REQUEST_RECIPIENT_INTERFACE;
+    setup->bRequest = CDC_REQUEST_SET_LINE_CODING;
+    setup->wValue = 0;
+    setup->wIndex = serial->intf;
+    setup->wLength = 7;
+
+    baud = line_coding->dwDTERate;
+    if (pl2303_type_data[pl2303_class->chip_type].max_baud_rate) {
+        baud = MIN(baud, pl2303_type_data[pl2303_class->chip_type].max_baud_rate);
+    }
+    /*
+     * Use direct method for supported baud rates, otherwise use divisors.
+     * Newer chip types do not support divisor encoding.
+     */
+    if (pl2303_type_data[pl2303_class->chip_type].no_divisors)
+        baud_sup = baud;
+    else
+        baud_sup = pl2303_get_supported_baud_rate(baud);
+
+    if (baud == baud_sup)
+        baud = pl2303_encode_baud_rate_direct(buf, baud);
+    else if (pl2303_type_data[pl2303_class->chip_type].alt_divisors)
+        baud = pl2303_encode_baud_rate_divisor_alt(buf, baud);
+    else
+        baud = pl2303_encode_baud_rate_divisor(buf, baud);
+
+    buf[4] = line_coding->bCharFormat;
+    buf[5] = line_coding->bParityType;
+    buf[6] = line_coding->bDataBits;
+
+    memcpy(serial->iobuffer, buf, sizeof(struct cdc_line_coding));
+
+    return usbh_control_transfer(serial->hport, setup, serial->iobuffer);
+}
+
+static int usbh_pl2303_get_line_coding(struct usbh_serial *serial, struct cdc_line_coding *line_coding)
+{
+    struct usb_setup_packet *setup;
+    int ret;
+
+    if (!serial || !serial->hport) {
+        return -USB_ERR_INVAL;
+    }
+    setup = serial->hport->setup;
+
+    setup->bmRequestType = USB_REQUEST_DIR_IN | USB_REQUEST_CLASS | USB_REQUEST_RECIPIENT_INTERFACE;
+    setup->bRequest = CDC_REQUEST_GET_LINE_CODING;
+    setup->wValue = 0;
+    setup->wIndex = serial->intf;
+    setup->wLength = 7;
+
+    ret = usbh_control_transfer(serial->hport, setup, serial->iobuffer);
+    if (ret < 0) {
+        return ret;
+    }
+    memcpy(line_coding, serial->iobuffer, sizeof(struct cdc_line_coding));
+    return ret;
+}
+
+static int usbh_pl2303_set_line_state(struct usbh_serial *serial, bool dtr, bool rts)
+{
+    struct usb_setup_packet *setup;
+
+    if (!serial || !serial->hport) {
+        return -USB_ERR_INVAL;
+    }
+    setup = serial->hport->setup;
+
+    setup->bmRequestType = USB_REQUEST_DIR_OUT | USB_REQUEST_CLASS | USB_REQUEST_RECIPIENT_INTERFACE;
+    setup->bRequest = CDC_REQUEST_SET_CONTROL_LINE_STATE;
+    setup->wValue = (dtr << 0) | (rts << 1);
+    setup->wIndex = serial->intf;
+    setup->wLength = 0;
+
+    return usbh_control_transfer(serial->hport, setup, NULL);
+}
+
+static int usbh_pl2303_get_modem_status(struct usbh_serial *serial)
+{
+    struct usbh_pl2303 *pl2303_class;
+    uintptr_t flags;
+    uint16_t status;
+
+    if (!serial || !serial->hport || !serial->priv) {
+        return -USB_ERR_INVAL;
+    }
+
+    flags = usb_osal_enter_critical_section();
+    pl2303_class = (struct usbh_pl2303 *)serial->priv;
+
+    status = (pl2303_class->modem_status & UART_DSR ? USBH_SERIAL_TIOCM_DSR : 0) |
+             (pl2303_class->modem_status & UART_CTS ? USBH_SERIAL_TIOCM_CTS : 0) |
+             (pl2303_class->modem_status & UART_RING ? USBH_SERIAL_TIOCM_RI : 0) |
+             (pl2303_class->modem_status & UART_DCD ? USBH_SERIAL_TIOCM_CD : 0) |
+             (serial->line_state & USBH_SERIAL_TIOCM_DTR ? USBH_SERIAL_TIOCM_DTR : 0) |
+             (serial->line_state & USBH_SERIAL_TIOCM_RTS ? USBH_SERIAL_TIOCM_RTS : 0);
+
+    usb_osal_leave_critical_section(flags);
+
+    return status;
+}
+
+#ifdef CONFIG_USBH_SERIAL_GET_MODEM_STATUS
+static int __usbh_pl2303_get_modem_status(struct usbh_serial *serial)
+{
+    struct usbh_pl2303 *pl2303_class;
+    uint8_t status = 0;
+    uint16_t difference;
+    uintptr_t flags;
+    int ret;
+
+    if (!serial || !serial->hport || !serial->priv) {
+        return -USB_ERR_INVAL;
+    }
+    pl2303_class = (struct usbh_pl2303 *)serial->priv;
+
+    usbh_int_urb_fill(&pl2303_class->intin_urb, serial->hport, pl2303_class->intin, &serial->iobuffer[USBH_SERIAL_INT_NOCACHE_OFFSET], pl2303_class->intin->wMaxPacketSize, 0xffffffff, NULL, NULL);
+    ret = usbh_submit_urb(&pl2303_class->intin_urb);
+    if (ret < 0) {
+        return ret;
+    }
+
+    if (ret < 1) {
+        return -USB_ERR_INVAL;
+    }
+
+    flags = usb_osal_enter_critical_section();
+
+    status = serial->iobuffer[USBH_SERIAL_INT_NOCACHE_OFFSET];
+    difference = pl2303_class->modem_status ^ status;
+    pl2303_class->modem_status = status;
+
+    if (status & UART_BREAK_ERROR)
+        serial->iocount.brk++;
+
+    if (difference & UART_STATE_MSR_MASK) {
+        if (difference & UART_CTS)
+            serial->iocount.cts++;
+        if (difference & UART_DSR)
+            serial->iocount.dsr++;
+        if (difference & UART_RING)
+            serial->iocount.rng++;
+        if (difference & UART_DCD) {
+            serial->iocount.dcd++;
+        }
+    }
+
+    usb_osal_leave_critical_section(flags);
+
+    return ret;
+}
+#endif
+
+static const struct usbh_serial_driver pl2303_driver = {
+    .driver_name = "pl2303",
+
+    .ignore_rx_header = 0,
+    .ignore_tx_header = 0,
+
+    .attach = usbh_pl2303_attach,
+    .detach = usbh_pl2303_detach,
+    .set_flow_control = usbh_pl2303_set_flow_ctrl,
+    .set_line_coding = usbh_pl2303_set_line_coding,
+    .get_line_coding = usbh_pl2303_get_line_coding,
+    .set_line_state = usbh_pl2303_set_line_state,
+    .get_modem_status = usbh_pl2303_get_modem_status,
+};
+
+static int usbh_pl2303_connect(struct usbh_hubport *hport, uint8_t intf)
+{
+    return usbh_serial_probe(hport, intf, &pl2303_driver) ? 0 : -USB_ERR_NOMEM;
+}
+
+static int usbh_pl2303_disconnect(struct usbh_hubport *hport, uint8_t intf)
+{
+    struct usbh_serial *serial = (struct usbh_serial *)hport->config.intf[intf].priv;
+
+    if (serial) {
+        usbh_serial_remove(serial);
+    }
+
+    return 0;
+}
+
+static const uint16_t pl2303_id_table[][2] = {
+    { 0x067B, 0x2303 }, // PL2303 Serial (ATEN/IOGEAR UC232A)
+    { 0x067B, 0x2304 }, // PL2303HXN Serial, type TB
+    { 0x067B, 0x23A3 }, // PL2303HXN Serial, type GC
+    { 0x067B, 0x23B3 }, // PL2303HXN Serial, type GB
+    { 0x067B, 0x23C3 }, // PL2303HXN Serial, type GT
+    { 0x067B, 0x23D3 }, // PL2303HXN Serial, type GL
+    { 0x067B, 0x23E3 }, // PL2303HXN Serial, type GE
+    { 0x067B, 0x23F3 }, // PL2303HXN Serial, type GS
+    { 0, 0 },
+};
+
+const struct usbh_class_driver pl2303_class_driver = {
+    .driver_name = "pl2303",
+    .connect = usbh_pl2303_connect,
+    .disconnect = usbh_pl2303_disconnect
+};
+
+CLASS_INFO_DEFINE const struct usbh_class_info pl2303_class_info = {
+    .match_flags = USB_CLASS_MATCH_VID_PID | USB_CLASS_MATCH_INTF_CLASS,
+    .bInterfaceClass = 0xff,
+    .bInterfaceSubClass = 0x00,
+    .bInterfaceProtocol = 0x00,
+    .id_table = pl2303_id_table,
+    .class_driver = &pl2303_class_driver
+};
--- a/class/serial/usbh_pl2303.h
+++ b/class/serial/usbh_pl2303.h
@@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2024 ~ 2025, sakumisu
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#ifndef USBH_PL2303_H
+#define USBH_PL2303_H
+
+#include "usb_cdc.h"
+
+#define PL2303_VENDOR_WRITE_REQUEST  0x01
+#define PL2303_VENDOR_WRITE_NREQUEST 0x80
+#define PL2303_VENDOR_READ_REQUEST   0x01
+#define PL2303_VENDOR_READ_NREQUEST  0x81
+
+#define PL2303_FLOWCTRL_MASK 0xf0
+
+#define PL2303_READ_TYPE_HX_STATUS 0x8080
+
+#define PL2303_HXN_RESET_REG             0x07
+#define PL2303_HXN_RESET_UPSTREAM_PIPE   0x02
+#define PL2303_HXN_RESET_DOWNSTREAM_PIPE 0x01
+
+#define PL2303_HXN_FLOWCTRL_REG      0x0a
+#define PL2303_HXN_FLOWCTRL_MASK     0x1c
+#define PL2303_HXN_FLOWCTRL_NONE     0x1c
+#define PL2303_HXN_FLOWCTRL_RTS_CTS  0x18
+#define PL2303_HXN_FLOWCTRL_XON_XOFF 0x0c
+
+#define PL2303_QUIRK_UART_STATE_IDX0  BIT(0)
+#define PL2303_QUIRK_LEGACY           BIT(1)
+#define PL2303_QUIRK_ENDPOINT_HACK    BIT(2)
+#define PL2303_QUIRK_NO_BREAK_GETLINE BIT(3)
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* USBH_PL2303_H */
--- a/class/serial/usbh_serial.c
+++ b/class/serial/usbh_serial.c
@@ -0,0 +1,743 @@
+/*
+ * Copyright (c) 2025, sakumisu
+ * Copyright (c) 2025, MDLZCOOL
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#include "usbh_core.h"
+#include "usbh_serial.h"
+
+#undef USB_DBG_TAG
+#define USB_DBG_TAG "usbh_serial"
+#include "usb_log.h"
+
+#define DEV_FORMAT_VENDOR  "/dev/ttyUSB%d"
+#define DEV_FORMAT_CDC_ACM "/dev/ttyACM%d"
+
+#define CONFIG_USBHOST_MAX_SERIAL_CLASS 4
+
+static struct usbh_serial g_serial_class[CONFIG_USBHOST_MAX_SERIAL_CLASS];
+
+static uint32_t g_devinuse = 0;
+static uint32_t g_cdcacm_devinuse = 0;
+
+USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t g_serial_iobuffer[CONFIG_USBHOST_MAX_SERIAL_CLASS][USB_ALIGN_UP((USBH_SERIAL_RX2_NOCACHE_OFFSET + USBH_SERIAL_RX2_NOCACHE_SIZE), CONFIG_USB_ALIGN_SIZE)];
+
+/* refer to cherryrb */
+static int usbh_serial_ringbuffer_init(usbh_serial_ringbuf_t *rb, void *pool, uint32_t size)
+{
+    if (NULL == rb) {
+        return -1;
+    }
+
+    if (NULL == pool) {
+        return -1;
+    }
+
+    if ((size < 2) || (size & (size - 1))) {
+        return -1;
+    }
+
+    rb->in = 0;
+    rb->out = 0;
+    rb->mask = size - 1;
+    rb->pool = pool;
+
+    return 0;
+}
+
+static void usbh_serial_ringbuffer_reset(usbh_serial_ringbuf_t *rb)
+{
+    rb->in = 0;
+    rb->out = 0;
+}
+
+static uint32_t usbh_serial_ringbuffer_get_used(usbh_serial_ringbuf_t *rb)
+{
+    return rb->in - rb->out;
+}
+
+static uint32_t usbh_serial_ringbuffer_write(usbh_serial_ringbuf_t *rb, void *data, uint32_t size)
+{
+    uint32_t unused;
+    uint32_t offset;
+    uint32_t remain;
+
+    unused = (rb->mask + 1) - (rb->in - rb->out);
+
+    if (size > unused) {
+        size = unused;
+    }
+
+    offset = rb->in & rb->mask;
+
+    remain = rb->mask + 1 - offset;
+    remain = remain > size ? size : remain;
+
+    memcpy(((uint8_t *)(rb->pool)) + offset, data, remain);
+    memcpy(rb->pool, (uint8_t *)data + remain, size - remain);
+
+    rb->in += size;
+
+    return size;
+}
+
+static uint32_t usbh_serial_ringbuffer_peek(usbh_serial_ringbuf_t *rb, void *data, uint32_t size)
+{
+    uint32_t used;
+    uint32_t offset;
+    uint32_t remain;
+
+    used = rb->in - rb->out;
+    if (size > used) {
+        size = used;
+    }
+
+    offset = rb->out & rb->mask;
+
+    remain = rb->mask + 1 - offset;
+    remain = remain > size ? size : remain;
+
+    memcpy(data, ((uint8_t *)(rb->pool)) + offset, remain);
+    memcpy((uint8_t *)data + remain, rb->pool, size - remain);
+
+    return size;
+}
+
+static uint32_t usbh_serial_ringbuffer_read(usbh_serial_ringbuf_t *rb, void *data, uint32_t size)
+{
+    size = usbh_serial_ringbuffer_peek(rb, data, size);
+    rb->out += size;
+    return size;
+}
+
+static struct usbh_serial *usbh_serial_alloc(bool is_cdcacm)
+{
+    uint8_t devno;
+    uint8_t devno2;
+
+    for (devno = 0; devno < CONFIG_USBHOST_MAX_SERIAL_CLASS; devno++) {
+        if ((g_devinuse & (1U << devno)) == 0) {
+            g_devinuse |= (1U << devno);
+            memset(&g_serial_class[devno], 0, sizeof(struct usbh_serial));
+            g_serial_class[devno].minor = devno;
+            g_serial_class[devno].cdc_minor = -1;
+            g_serial_class[devno].iobuffer = g_serial_iobuffer[devno];
+            g_serial_class[devno].rx_complete_sem = usb_osal_sem_create(0);
+
+            if (is_cdcacm) {
+                for (devno2 = 0; devno2 < CONFIG_USBHOST_MAX_SERIAL_CLASS; devno2++) {
+                    if ((g_cdcacm_devinuse & (1U << devno2)) == 0) {
+                        g_cdcacm_devinuse |= (1U << devno2);
+                        g_serial_class[devno].cdc_minor = devno2;
+                        return &g_serial_class[devno];
+                    }
+                }
+
+                g_devinuse &= ~(1U << devno);
+                return NULL;
+            } else {
+                return &g_serial_class[devno];
+            }
+        }
+    }
+    return NULL;
+}
+
+static void usbh_serial_free(struct usbh_serial *serial)
+{
+    uint8_t devno = serial->minor;
+    if (devno < 32) {
+        g_devinuse &= ~(1U << devno);
+    }
+
+    if (serial->cdc_minor >= 0) {
+        g_cdcacm_devinuse &= ~(1U << serial->cdc_minor);
+    }
+
+    if (g_serial_class[devno].rx_complete_sem) {
+        usb_osal_sem_delete(g_serial_class[devno].rx_complete_sem);
+    }
+}
+
+static void usbh_serial_callback(void *arg, int nbytes)
+{
+    struct usbh_serial *serial = (struct usbh_serial *)arg;
+    int ret;
+
+    if (nbytes < 0) {
+        if (nbytes != -USB_ERR_SHUTDOWN) {
+            USB_LOG_ERR("serial transfer error: %d\n", nbytes);
+        }
+        serial->rx_errorcode = nbytes;
+        usb_osal_sem_give(serial->rx_complete_sem);
+        return;
+    }
+
+    if (nbytes < serial->driver->ignore_rx_header) {
+        USB_LOG_ERR("serial rx short packet: %d\n", nbytes);
+        serial->rx_errorcode = -USB_ERR_IO;
+        usb_osal_sem_give(serial->rx_complete_sem);
+        return;
+    }
+
+    if (nbytes >= serial->driver->ignore_rx_header) {
+        /* resubmit the read urb */
+        usbh_bulk_urb_fill(&serial->bulkin_urb, serial->hport, serial->bulkin, &serial->iobuffer[serial->rx_buf_index ? USBH_SERIAL_RX_NOCACHE_OFFSET : USBH_SERIAL_RX2_NOCACHE_OFFSET], serial->bulkin->wMaxPacketSize,
+                           0, usbh_serial_callback, serial);
+        ret = usbh_submit_urb(&serial->bulkin_urb);
+        if (ret < 0) {
+            USB_LOG_ERR("serial submit failed: %d\n", ret);
+            serial->rx_errorcode = ret;
+            usb_osal_sem_give(serial->rx_complete_sem);
+            return;
+        }
+
+        usbh_serial_ringbuffer_write(&serial->rx_rb,
+                                     &serial->iobuffer[(serial->rx_buf_index ? USBH_SERIAL_RX2_NOCACHE_OFFSET : USBH_SERIAL_RX_NOCACHE_OFFSET) + serial->driver->ignore_rx_header],
+                                     (nbytes - serial->driver->ignore_rx_header));
+
+        if (serial->rx_complete_callback) {
+            serial->rx_complete_callback(serial, nbytes - serial->driver->ignore_rx_header);
+        }
+        serial->rx_buf_index ^= 1;
+        serial->rx_errorcode = 0;
+        usb_osal_sem_give(serial->rx_complete_sem);
+    }
+}
+
+struct usbh_serial *usbh_serial_probe(struct usbh_hubport *hport, uint8_t intf,
+                                      const struct usbh_serial_driver *driver)
+{
+    struct usb_endpoint_descriptor *ep_desc;
+    struct usbh_serial *serial;
+    bool is_cdcacm = false;
+    int ret;
+
+    if (strcmp(driver->driver_name, "cdc_acm") == 0) {
+        is_cdcacm = true;
+    }
+
+    serial = usbh_serial_alloc(is_cdcacm);
+    if (serial == NULL) {
+        USB_LOG_ERR("Fail to alloc serial class\r\n");
+        return NULL;
+    }
+
+    serial->hport = hport;
+    serial->intf = intf;
+    serial->driver = driver;
+
+    if (driver->attach) {
+        ret = driver->attach(serial);
+        if (ret < 0) {
+            USB_LOG_ERR("Serial attach failed: %d\r\n", ret);
+            usbh_serial_free(serial);
+            return NULL;
+        }
+    }
+
+    if (is_cdcacm) {
+        intf = intf + 1; /* data interface */
+    }
+
+    for (uint8_t i = 0; i < hport->config.intf[intf].altsetting[0].intf_desc.bNumEndpoints; i++) {
+        ep_desc = &hport->config.intf[intf].altsetting[0].ep[i].ep_desc;
+
+        if (USB_GET_ENDPOINT_TYPE(ep_desc->bmAttributes) == USB_ENDPOINT_TYPE_BULK) {
+            if (ep_desc->bEndpointAddress & 0x80) {
+                USBH_EP_INIT(serial->bulkin, ep_desc);
+            } else {
+                USBH_EP_INIT(serial->bulkout, ep_desc);
+            }
+        }
+    }
+
+    if (is_cdcacm) {
+        intf = intf - 1; /* data interface */
+    }
+
+    if (!serial->bulkin || !serial->bulkout) {
+        USB_LOG_ERR("Serial bulk in/out endpoint not found\r\n");
+        usbh_serial_free(serial);
+        return NULL;
+    }
+
+    if (is_cdcacm) {
+        snprintf(hport->config.intf[intf].devname, CONFIG_USBHOST_DEV_NAMELEN, DEV_FORMAT_CDC_ACM, serial->cdc_minor);
+    } else {
+        snprintf(hport->config.intf[intf].devname, CONFIG_USBHOST_DEV_NAMELEN, DEV_FORMAT_VENDOR, serial->minor);
+    }
+
+    hport->config.intf[intf].priv = serial;
+    USB_LOG_INFO("Register Serial Class: %s (%s)\r\n", hport->config.intf[intf].devname, driver->driver_name);
+
+    usbh_serial_run(serial);
+
+    return serial;
+}
+
+void usbh_serial_remove(struct usbh_serial *serial)
+{
+    if (!serial || !serial->hport)
+        return;
+
+    usbh_serial_close(serial);
+
+    if (serial->driver && serial->driver->detach) {
+        serial->driver->detach(serial);
+    }
+
+    if (serial->hport->config.intf[serial->intf].priv) {
+        usb_osal_thread_schedule_other();
+        USB_LOG_INFO("Unregister Serial Class: %s (%s)\r\n", serial->hport->config.intf[serial->intf].devname, serial->driver->driver_name);
+        usbh_serial_stop(serial);
+    }
+
+    usbh_serial_free(serial);
+}
+
+struct usbh_serial *usbh_serial_open(const char *devname, uint32_t open_flags)
+{
+    struct usbh_serial *serial;
+    int ret;
+
+    serial = usbh_find_class_instance(devname);
+    if (!serial) {
+        return NULL;
+    }
+
+    if (serial->ref_count != 0) {
+        USB_LOG_ERR("Device busy: %s\r\n", devname);
+        return NULL;
+    }
+
+    if (serial && serial->driver && serial->driver->open) {
+        ret = serial->driver->open(serial);
+        if (ret < 0) {
+            return NULL;
+        }
+    }
+
+    usbh_serial_ringbuffer_init(&serial->rx_rb, serial->rx_rb_pool, CONFIG_USBHOST_SERIAL_RX_SIZE);
+
+    serial->ref_count++;
+    serial->open_flags = open_flags;
+
+    return serial;
+}
+
+int usbh_serial_close(struct usbh_serial *serial)
+{
+    if (!serial || !serial->hport) {
+        return -USB_ERR_INVAL;
+    }
+
+    if (serial->ref_count == 0) {
+        return 0;
+    }
+
+    if (serial->bulkin) {
+        usbh_kill_urb(&serial->bulkin_urb);
+    }
+    if (serial->bulkout) {
+        usbh_kill_urb(&serial->bulkout_urb);
+    }
+
+    if (serial && serial->driver && serial->driver->set_flow_control && serial->rtscts) {
+        serial->driver->set_flow_control(serial, false);
+    }
+
+    if (serial && serial->driver && serial->driver->close) {
+        serial->driver->close(serial);
+    }
+
+    serial->ref_count--;
+    serial->rtscts = false;
+
+    return 0;
+}
+
+static int usbh_serial_tiocmset(struct usbh_serial *serial, uint32_t set, uint32_t clear)
+{
+    int ret;
+    uint16_t line_state;
+    bool dtr;
+    bool rts;
+
+    if (!serial || !serial->hport || !serial->hport->connected) {
+        return -USB_ERR_INVAL;
+    }
+
+    if (serial->ref_count == 0) {
+        return -USB_ERR_NODEV;
+    }
+
+    line_state = serial->line_state;
+    clear &= ~set; /* 'set' takes precedence over 'clear' */
+
+    if (set & USBH_SERIAL_TIOCM_DTR) {
+        line_state |= USBH_SERIAL_TIOCM_DTR;
+    }
+    if (set & USBH_SERIAL_TIOCM_RTS) {
+        line_state |= USBH_SERIAL_TIOCM_RTS;
+    }
+    if (clear & USBH_SERIAL_TIOCM_DTR) {
+        line_state &= ~USBH_SERIAL_TIOCM_DTR;
+    }
+    if (clear & USBH_SERIAL_TIOCM_RTS) {
+        line_state &= ~USBH_SERIAL_TIOCM_RTS;
+    }
+
+    dtr = (line_state & USBH_SERIAL_TIOCM_DTR) ? true : false;
+    rts = (line_state & USBH_SERIAL_TIOCM_RTS) ? true : false;
+
+    if (serial && serial->driver && serial->driver->set_line_state) {
+        ret = serial->driver->set_line_state(serial, dtr, rts);
+    } else {
+        return -USB_ERR_NOTSUPP;
+    }
+    serial->line_state = line_state;
+
+    return ret;
+}
+
+int usbh_serial_control(struct usbh_serial *serial, int cmd, void *arg)
+{
+    int ret;
+
+    if (!serial || !serial->hport || !serial->hport->connected) {
+        return -USB_ERR_INVAL;
+    }
+
+    if (serial->ref_count == 0) {
+        return -USB_ERR_NODEV;
+    }
+
+    switch (cmd) {
+        case USBH_SERIAL_CMD_SET_ATTR: {
+            struct usbh_serial_termios *termios = (struct usbh_serial_termios *)arg;
+            struct cdc_line_coding line_coding;
+
+            line_coding.dwDTERate = termios->baudrate;
+            line_coding.bCharFormat = termios->stopbits;
+            line_coding.bParityType = termios->parity;
+            line_coding.bDataBits = termios->databits;
+
+            if (serial->bulkin) {
+                usbh_kill_urb(&serial->bulkin_urb);
+            }
+            if (serial->bulkout) {
+                usbh_kill_urb(&serial->bulkout_urb);
+            }
+
+            if (serial && serial->driver && serial->driver->set_line_coding) {
+                ret = serial->driver->set_line_coding(serial, &line_coding);
+                if (ret < 0) {
+                    return ret;
+                }
+            } else {
+                return -USB_ERR_NOTSUPP;
+            }
+
+            memcpy(&serial->line_coding, &line_coding, sizeof(struct cdc_line_coding));
+
+            if (serial && serial->driver && serial->driver->set_flow_control) {
+                ret = serial->driver->set_flow_control(serial, termios->rtscts);
+            }
+
+            serial->rtscts = termios->rtscts;
+            serial->rx_timeout_ms = termios->rx_timeout;
+
+            ret = usbh_serial_tiocmset(serial, USBH_SERIAL_TIOCM_DTR | USBH_SERIAL_TIOCM_RTS, 0);
+            if (ret < 0) {
+                return ret;
+            }
+
+            usbh_serial_ringbuffer_reset(&serial->rx_rb);
+            usb_osal_sem_reset(serial->rx_complete_sem);
+            serial->rx_buf_index = 0;
+            usbh_bulk_urb_fill(&serial->bulkin_urb, serial->hport, serial->bulkin, &serial->iobuffer[serial->rx_buf_index ? USBH_SERIAL_RX2_NOCACHE_OFFSET : USBH_SERIAL_RX_NOCACHE_OFFSET], serial->bulkin->wMaxPacketSize,
+                               0, usbh_serial_callback, serial);
+            ret = usbh_submit_urb(&serial->bulkin_urb);
+
+            return ret;
+        } break;
+        case USBH_SERIAL_CMD_GET_ATTR: {
+            struct usbh_serial_termios *termios = (struct usbh_serial_termios *)arg;
+            struct cdc_line_coding line_coding;
+
+            if (serial && serial->driver && serial->driver->get_line_coding) {
+                return serial->driver->get_line_coding(serial, &line_coding);
+            } else {
+                memcpy(&line_coding, &serial->line_coding, sizeof(struct cdc_line_coding));
+            }
+
+            termios->baudrate = line_coding.dwDTERate;
+            termios->stopbits = line_coding.bCharFormat;
+            termios->parity = line_coding.bParityType;
+            termios->databits = line_coding.bDataBits;
+            termios->rtscts = serial->rtscts;
+            termios->rx_timeout = serial->rx_timeout_ms;
+            return 0;
+        } break;
+        case USBH_SERIAL_CMD_IOCMBIS: {
+            uint32_t flags = *(uint32_t *)arg;
+
+            return usbh_serial_tiocmset(serial, flags, 0);
+        } break;
+        case USBH_SERIAL_CMD_IOCMBIC: {
+            uint32_t flags = *(uint32_t *)arg;
+
+            return usbh_serial_tiocmset(serial, 0, flags);
+        } break;
+        case USBH_SERIAL_CMD_TIOCMSET: {
+            uint32_t flags = *(uint32_t *)arg;
+
+            uint32_t set = 0;
+            uint32_t clear = 0;
+
+            set |= (flags & USBH_SERIAL_TIOCM_DTR) ? USBH_SERIAL_TIOCM_DTR : 0;
+            set |= (flags & USBH_SERIAL_TIOCM_RTS) ? USBH_SERIAL_TIOCM_RTS : 0;
+            clear |= !(flags & USBH_SERIAL_TIOCM_DTR) ? USBH_SERIAL_TIOCM_DTR : 0;
+            clear |= !(flags & USBH_SERIAL_TIOCM_RTS) ? USBH_SERIAL_TIOCM_RTS : 0;
+
+            return usbh_serial_tiocmset(serial, set, clear);
+        } break;
+        case USBH_SERIAL_CMD_TIOCMGET: {
+            uint32_t *flags = (uint32_t *)arg;
+            int status;
+
+            if (serial && serial->driver && serial->driver->get_modem_status) {
+                status = serial->driver->get_modem_status(serial);
+                if (status < 0) {
+                    return status;
+                }
+            } else {
+                return -USB_ERR_NOTSUPP;
+            }
+            *flags = status;
+        } break;
+        default:
+            break;
+    }
+
+    return -USB_ERR_NOTSUPP;
+}
+
+int usbh_serial_write(struct usbh_serial *serial, const void *buffer, uint32_t buflen)
+{
+    int ret;
+    struct usbh_urb *urb;
+
+    if (!serial || !serial->hport || !serial->hport->connected || !serial->bulkout) {
+        return -USB_ERR_INVAL;
+    }
+
+    if (serial->ref_count == 0) {
+        return -USB_ERR_NODEV;
+    }
+
+    urb = &serial->bulkout_urb;
+
+    usbh_bulk_urb_fill(urb, serial->hport, serial->bulkout, (uint8_t *)buffer, buflen, 0xffffffff, NULL, NULL);
+    ret = usbh_submit_urb(urb);
+    if (ret == 0) {
+        ret = urb->actual_length;
+    }
+    return ret;
+}
+
+int usbh_serial_read(struct usbh_serial *serial, void *buffer, uint32_t buflen)
+{
+    int ret;
+
+    if (!serial || !serial->hport || !serial->hport->connected || !serial->bulkin || !serial->line_coding.dwDTERate) {
+        return -USB_ERR_INVAL;
+    }
+
+    if (serial->ref_count == 0) {
+        return -USB_ERR_NODEV;
+    }
+
+    if (serial->open_flags & USBH_SERIAL_O_NONBLOCK) {
+        return usbh_serial_ringbuffer_read(&serial->rx_rb, buffer, buflen);
+    } else {
+        if (usbh_serial_ringbuffer_get_used(&serial->rx_rb) == 0) {
+            ret = usb_osal_sem_take(serial->rx_complete_sem, serial->rx_timeout_ms == 0 ? USB_OSAL_WAITING_FOREVER : serial->rx_timeout_ms);
+            if (ret < 0) {
+                return ret;
+            }
+            if (serial->rx_errorcode < 0) {
+                return serial->rx_errorcode;
+            }
+        }
+        return usbh_serial_ringbuffer_read(&serial->rx_rb, buffer, buflen);
+    }
+}
+
+int usbh_serial_cdc_write_async(struct usbh_serial *serial, uint8_t *buffer, uint32_t buflen, usbh_complete_callback_t complete, void *arg)
+{
+    struct usbh_urb *urb;
+
+    if (!serial || !serial->hport || !serial->hport->connected || !serial->bulkout || !complete || serial->line_coding.dwDTERate) {
+        return -USB_ERR_INVAL;
+    }
+
+    if (serial->ref_count == 0) {
+        return -USB_ERR_NODEV;
+    }
+
+    urb = &serial->bulkout_urb;
+
+    usbh_bulk_urb_fill(urb, serial->hport, serial->bulkout, buffer, buflen,
+                       0, complete, serial);
+    return usbh_submit_urb(urb);
+}
+
+int usbh_serial_cdc_read_async(struct usbh_serial *serial, uint8_t *buffer, uint32_t buflen, usbh_complete_callback_t complete, void *arg)
+{
+    struct usbh_urb *urb;
+
+    if (!serial || !serial->hport || !serial->hport->connected || !serial->bulkin || !complete || serial->line_coding.dwDTERate) {
+        return -USB_ERR_INVAL;
+    }
+
+    if (serial->ref_count == 0) {
+        return -USB_ERR_NODEV;
+    }
+
+    if (buflen % serial->bulkin->wMaxPacketSize) {
+        return -USB_ERR_INVAL;
+    }
+
+    urb = &serial->bulkin_urb;
+
+    usbh_bulk_urb_fill(urb, serial->hport, serial->bulkin, buffer, MIN(buflen, serial->bulkin->wMaxPacketSize),
+                       0, complete, serial);
+    return usbh_submit_urb(urb);
+}
+
+void usbh_serial_help(void)
+{
+    USB_LOG_RAW("USB host serial test\r\n"
+                "Usage: usbh_serial <ttypath> [options]...\r\n"
+                "\r\n"
+                "-b <baud>             set serial baudrate\r\n"
+                "-t <dtr> <rts>        set rts and dtr\r\n"
+                "-w string             write string\r\n"
+                "-r                    read data and dump\r\n"
+                "-x                    close serial device\r\n"
+                "\r\n");
+}
+
+static USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t g_serial_testbuffer[512];
+
+int usbh_serial(int argc, char **argv)
+{
+    static struct usbh_serial *serial;
+    int ret;
+
+    if (argc < 3) {
+        usbh_serial_help();
+        return 0;
+    }
+
+    if (serial) {
+        if (!serial->hport || !serial->hport->connected) {
+            serial = NULL;
+        }
+    }
+
+    if (!serial) {
+        serial = usbh_serial_open(argv[1], USBH_SERIAL_O_RDWR | USBH_SERIAL_O_NONBLOCK);
+        if (!serial) {
+            USB_LOG_ERR("Fail to open serial device: %s\r\n", argv[1]);
+            return -USB_ERR_INVAL;
+        }
+    }
+
+    if (strncmp(argv[2], "-b", 2) == 0 && argc >= 4) {
+        struct usbh_serial_termios termios;
+
+        memset(&termios, 0, sizeof(termios));
+        termios.baudrate = atoi(argv[3]);
+        termios.stopbits = 0;
+        termios.parity = 0;
+        termios.databits = 8;
+        termios.rtscts = false;
+        termios.rx_timeout = 0;
+        usbh_serial_control(serial, USBH_SERIAL_CMD_SET_ATTR, &termios);
+    } else if (strncmp(argv[2], "-t", 2) == 0 && argc >= 5) {
+        uint32_t flags;
+
+        flags = atoi(argv[3]) ? USBH_SERIAL_TIOCM_DTR : 0;
+        flags |= atoi(argv[4]) ? USBH_SERIAL_TIOCM_RTS : 0;
+
+        usbh_serial_control(serial, USBH_SERIAL_CMD_TIOCMSET, &flags);
+        USB_LOG_INFO("Set DTR: %d, RTS: %d\r\n", atoi(argv[3]), atoi(argv[4]));
+    } else if (strncmp(argv[2], "-w", 2) == 0 && argc >= 4) {
+        memcpy(g_serial_testbuffer, argv[3], MIN(strlen(argv[3]), sizeof(g_serial_testbuffer)));
+        uint32_t len = snprintf((char *)g_serial_testbuffer, sizeof(g_serial_testbuffer), "%s\r\n", argv[3]);
+        ret = usbh_serial_write(serial, g_serial_testbuffer, len);
+        if (ret >= 0) {
+            USB_LOG_INFO("Write %d bytes\r\n", ret);
+        } else {
+            USB_LOG_ERR("Write failed: %d\r\n", ret);
+        }
+    } else if (strncmp(argv[2], "-r", 2) == 0) {
+        ret = usbh_serial_read(serial, g_serial_testbuffer, sizeof(g_serial_testbuffer));
+        if (ret >= 0) {
+            usb_hexdump(g_serial_testbuffer, ret);
+            USB_LOG_INFO("Read %d bytes\r\n", ret);
+        } else {
+            USB_LOG_ERR("Read failed: %d\r\n", ret);
+        }
+    } else if (strncmp(argv[2], "-x", 2) == 0) {
+        usbh_serial_close(serial);
+        serial = NULL;
+    } else {
+        usbh_serial_help();
+    }
+
+    return 0;
+}
+
+__WEAK void usbh_serial_run(struct usbh_serial *serial)
+{
+    (void)serial;
+}
+
+__WEAK void usbh_serial_stop(struct usbh_serial *serial)
+{
+    (void)serial;
+}
+
+static int usbh_cdc_data_connect(struct usbh_hubport *hport, uint8_t intf)
+{
+    (void)hport;
+    (void)intf;
+    return 0;
+}
+
+static int usbh_cdc_data_disconnect(struct usbh_hubport *hport, uint8_t intf)
+{
+    (void)hport;
+    (void)intf;
+    return 0;
+}
+
+const struct usbh_class_driver cdc_data_class_driver = {
+    .driver_name = "cdc_data",
+    .connect = usbh_cdc_data_connect,
+    .disconnect = usbh_cdc_data_disconnect
+};
+
+CLASS_INFO_DEFINE const struct usbh_class_info cdc_data_class_info = {
+    .match_flags = USB_CLASS_MATCH_INTF_CLASS,
+    .bInterfaceClass = USB_DEVICE_CLASS_CDC_DATA,
+    .bInterfaceSubClass = 0x00,
+    .bInterfaceProtocol = 0x00,
+    .id_table = NULL,
+    .class_driver = &cdc_data_class_driver
+};
--- a/class/serial/usbh_serial.h
+++ b/class/serial/usbh_serial.h
@@ -0,0 +1,182 @@
+/*
+ * Copyright (c) 2025, sakumisu
+ * Copyright (c) 2025, MDLZCOOL
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#ifndef USBH_SERIAL_H
+#define USBH_SERIAL_H
+
+#include "usb_cdc.h"
+
+#define USBH_SERIAL_CTRL_NOCACHE_OFFSET 0
+#define USBH_SERIAL_CTRL_NOCACHE_SIZE   32
+#define USBH_SERIAL_INT_NOCACHE_OFFSET  USB_ALIGN_UP(USBH_SERIAL_CTRL_NOCACHE_SIZE, CONFIG_USB_ALIGN_SIZE)
+#define USBH_SERIAL_INT_NOCACHE_SIZE    32
+#define USBH_SERIAL_RX_NOCACHE_OFFSET   USB_ALIGN_UP((USBH_SERIAL_INT_NOCACHE_OFFSET + USBH_SERIAL_INT_NOCACHE_SIZE), CONFIG_USB_ALIGN_SIZE)
+#define USBH_SERIAL_RX_NOCACHE_SIZE     512
+#define USBH_SERIAL_RX2_NOCACHE_OFFSET  USB_ALIGN_UP((USBH_SERIAL_RX_NOCACHE_OFFSET + USBH_SERIAL_RX_NOCACHE_SIZE), CONFIG_USB_ALIGN_SIZE)
+#define USBH_SERIAL_RX2_NOCACHE_SIZE    512
+
+#define USBH_SERIAL_DATABITS_5 5
+#define USBH_SERIAL_DATABITS_6 6
+#define USBH_SERIAL_DATABITS_7 7
+#define USBH_SERIAL_DATABITS_8 8
+
+#define USBH_SERIAL_PARITY_NONE  0
+#define USBH_SERIAL_PARITY_ODD   1
+#define USBH_SERIAL_PARITY_EVEN  2
+#define USBH_SERIAL_PARITY_MARK  3
+#define USBH_SERIAL_PARITY_SPACE 4
+
+#define USBH_SERIAL_STOPBITS_1   0
+#define USBH_SERIAL_STOPBITS_1_5 1
+#define USBH_SERIAL_STOPBITS_2   2
+
+/* modem lines */
+#define USBH_SERIAL_TIOCM_LE   0x001 /* line enable */
+#define USBH_SERIAL_TIOCM_DTR  0x002 /* data terminal ready */
+#define USBH_SERIAL_TIOCM_RTS  0x004 /* request to send */
+#define USBH_SERIAL_TIOCM_ST   0x010 /* secondary transmit */
+#define USBH_SERIAL_TIOCM_SR   0x020 /* secondary receive */
+#define USBH_SERIAL_TIOCM_CTS  0x040 /* clear to send */
+#define USBH_SERIAL_TIOCM_CAR  0x100 /* carrier detect */
+#define USBH_SERIAL_TIOCM_CD   USBH_SERIAL_TIOCM_CAR
+#define USBH_SERIAL_TIOCM_RNG  0x200 /* ring */
+#define USBH_SERIAL_TIOCM_RI   USBH_SERIAL_TIOCM_RNG
+#define USBH_SERIAL_TIOCM_DSR  0x400 /* data set ready */
+#define USBH_SERIAL_TIOCM_OUT1 0x2000
+#define USBH_SERIAL_TIOCM_OUT2 0x4000
+#define USBH_SERIAL_TIOCM_LOOP 0x8000
+
+#define USBH_SERIAL_O_RDONLY 0x0000 /* open for reading only */
+#define USBH_SERIAL_O_WRONLY 0x0001 /* open for writing only */
+#define USBH_SERIAL_O_RDWR   0x0002 /* open for reading and writing */
+
+#define USBH_SERIAL_O_ACCMODE  0x0003 /* mask for above modes, from 4.4BSD https://minnie.tuhs.org/cgi-bin/utree.pl?file=4.4BSD/usr/include/sys/fcntl.h */
+#define USBH_SERIAL_O_NONBLOCK 0x0004 /* non-blocking I/O, from BSD apple https://opensource.apple.com/source/xnu/xnu-1228.0.2/bsd/sys/fcntl.h */
+
+#define USBH_SERIAL_CMD_SET_ATTR 0
+#define USBH_SERIAL_CMD_GET_ATTR 1
+#define USBH_SERIAL_CMD_IOCMBIS  2
+#define USBH_SERIAL_CMD_IOCMBIC  3
+#define USBH_SERIAL_CMD_TIOCMSET 4
+#define USBH_SERIAL_CMD_TIOCMGET 5
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef struct {
+    uint32_t in;   /*!< Define the write pointer.               */
+    uint32_t out;  /*!< Define the read pointer.                */
+    uint32_t mask; /*!< Define the write and read pointer mask. */
+    void *pool;    /*!< Define the memory pointer.              */
+} usbh_serial_ringbuf_t;
+
+/*
+ * Counters of the input lines (CTS, DSR, RI, CD) interrupts
+ */
+
+struct usbh_serial_async_icount {
+    uint32_t cts, dsr, rng, dcd, tx, rx;
+    uint32_t frame, parity, overrun, brk;
+    uint32_t buf_overrun;
+};
+
+struct usbh_serial_termios {
+    uint32_t baudrate;
+    uint8_t databits;
+    uint8_t parity;
+    uint8_t stopbits;
+    bool rtscts; /* hardware flow control */
+    uint32_t rx_timeout;
+};
+
+struct usbh_serial;
+
+typedef void (*usbh_serial_rx_complete_callback_t)(struct usbh_serial *serial, int nbytes);
+
+/**
+ * @brief Serial Driver Operations
+ */
+struct usbh_serial_driver {
+    const char *driver_name;
+
+    uint8_t ignore_tx_header;
+    uint8_t ignore_rx_header;
+
+    int (*attach)(struct usbh_serial *serial);
+    void (*detach)(struct usbh_serial *serial);
+
+    int (*open)(struct usbh_serial *serial);
+    void (*close)(struct usbh_serial *serial);
+    int (*set_flow_control)(struct usbh_serial *serial, bool enable);
+    int (*set_line_coding)(struct usbh_serial *serial, struct cdc_line_coding *line_coding);
+    int (*get_line_coding)(struct usbh_serial *serial, struct cdc_line_coding *line_coding);
+    int (*set_line_state)(struct usbh_serial *serial, bool dtr, bool rts);
+    int (*get_modem_status)(struct usbh_serial *serial);
+};
+
+/**
+ * @brief Serial Instance
+ */
+struct usbh_serial {
+    struct usbh_hubport *hport;
+    uint8_t intf;      /* Interface Number */
+    int minor;         /* Serial Port Number (/dev/ttyUSBx or /dev/ttyACMx) */
+    int cdc_minor;     /* Serial Port Number (/dev/ttyACMx) */
+    uint8_t *iobuffer; /* I/O buffer for serial transfers */
+    uint8_t ref_count; /* Reference Count */
+    uint32_t open_flags;
+    uint32_t rx_timeout_ms;
+
+    struct cdc_line_coding line_coding;
+    uint16_t line_state;
+    bool rtscts; /* hardware flow control */
+    struct usbh_serial_async_icount iocount;
+
+    struct usb_endpoint_descriptor *bulkin;  /* Bulk IN endpoint */
+    struct usb_endpoint_descriptor *bulkout; /* Bulk OUT endpoint */
+    struct usbh_urb bulkout_urb;
+    struct usbh_urb bulkin_urb;
+
+    const struct usbh_serial_driver *driver;
+
+    usbh_serial_ringbuf_t rx_rb;
+    uint8_t rx_rb_pool[CONFIG_USBHOST_SERIAL_RX_SIZE];
+    usb_osal_sem_t rx_complete_sem;
+    uint8_t rx_buf_index;
+    int rx_errorcode;
+    usbh_serial_rx_complete_callback_t rx_complete_callback;
+
+    void *priv;      /* Private Data */
+    void *user_data; /* User Data */
+};
+
+/* internal api */
+struct usbh_serial *usbh_serial_probe(struct usbh_hubport *hport, uint8_t intf, const struct usbh_serial_driver *driver);
+void usbh_serial_remove(struct usbh_serial *serial);
+
+/* public api */
+struct usbh_serial *usbh_serial_open(const char *devname, uint32_t open_flags);
+int usbh_serial_close(struct usbh_serial *serial);
+int usbh_serial_control(struct usbh_serial *serial, int cmd, void *arg);
+int usbh_serial_write(struct usbh_serial *serial, const void *buffer, uint32_t buflen);
+int usbh_serial_read(struct usbh_serial *serial, void *buffer, uint32_t buflen);
+
+/* cdc only api */
+int usbh_serial_cdc_write_async(struct usbh_serial *serial, uint8_t *buffer, uint32_t buflen, usbh_complete_callback_t complete, void *arg);
+int usbh_serial_cdc_read_async(struct usbh_serial *serial, uint8_t *buffer, uint32_t buflen, usbh_complete_callback_t complete, void *arg);
+
+/* public weak api */
+void usbh_serial_run(struct usbh_serial *serial);
+void usbh_serial_stop(struct usbh_serial *serial);
+
+int usbh_serial(int argc, char **argv);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* USBH_SERIAL_H */
--- a/class/vendor/net/usbh_rtl8152.c
+++ b/class/vendor/net/usbh_rtl8152.c
@@ -1596,8 +1596,8 @@ static void r8153_teredo_off(struct usbh_rtl8152 *tp)
        case RTL_VER_15:
        default:
            /* The bit 0 ~ 7 are relative with teredo settings. They are
-		 * W1C (write 1 to clear), so set all 1 to disable it.
-		 */
+             * W1C (write 1 to clear), so set all 1 to disable it.
+             */
            ocp_write_byte(tp, MCU_TYPE_PLA, PLA_TEREDO_CFG, 0xff);
            break;
    }
--- a/class/vendor/serial/usbh_ch34x.c
+++ b/class/vendor/serial/usbh_ch34x.c
@@ -1,379 +0,0 @@
-/*
- * Copyright (c) 2024, sakumisu
- *
- * SPDX-License-Identifier: Apache-2.0
- */
-#include "usbh_core.h"
-#include "usbh_ch34x.h"
-
-#define DEV_FORMAT "/dev/ttyUSB%d"
-
-USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t g_ch34x_buf[USB_ALIGN_UP(64, CONFIG_USB_ALIGN_SIZE)];
-
-#define CONFIG_USBHOST_MAX_CP210X_CLASS 1
-
-static struct usbh_ch34x g_ch34x_class[CONFIG_USBHOST_MAX_CP210X_CLASS];
-static uint32_t g_devinuse = 0;
-
-static struct usbh_ch34x *usbh_ch34x_class_alloc(void)
-{
-    uint8_t devno;
-
-    for (devno = 0; devno < CONFIG_USBHOST_MAX_CP210X_CLASS; devno++) {
-        if ((g_devinuse & (1U << devno)) == 0) {
-            g_devinuse |= (1U << devno);
-            memset(&g_ch34x_class[devno], 0, sizeof(struct usbh_ch34x));
-            g_ch34x_class[devno].minor = devno;
-            return &g_ch34x_class[devno];
-        }
-    }
-    return NULL;
-}
-
-static void usbh_ch34x_class_free(struct usbh_ch34x *ch34x_class)
-{
-    uint8_t devno = ch34x_class->minor;
-
-    if (devno < 32) {
-        g_devinuse &= ~(1U << devno);
-    }
-    memset(ch34x_class, 0, sizeof(struct usbh_ch34x));
-}
-
-static int usbh_ch34x_get_baudrate_div(uint32_t baudrate, uint8_t *factor, uint8_t *divisor)
-{
-    uint8_t a;
-    uint8_t b;
-    uint32_t c;
-
-    switch (baudrate) {
-        case 921600:
-            a = 0xf3;
-            b = 7;
-            break;
-
-        case 307200:
-            a = 0xd9;
-            b = 7;
-            break;
-
-        default:
-            if (baudrate > 6000000 / 255) {
-                b = 3;
-                c = 6000000;
-            } else if (baudrate > 750000 / 255) {
-                b = 2;
-                c = 750000;
-            } else if (baudrate > 93750 / 255) {
-                b = 1;
-                c = 93750;
-            } else {
-                b = 0;
-                c = 11719;
-            }
-            a = (uint8_t)(c / baudrate);
-            if (a == 0 || a == 0xFF) {
-                return -USB_ERR_INVAL;
-            }
-            if ((c / a - baudrate) > (baudrate - c / (a + 1))) {
-                a++;
-            }
-            a = (uint8_t)(256 - a);
-            break;
-    }
-
-    *factor = a;
-    *divisor = b;
-
-    return 0;
-}
-
-static int usbh_ch34x_get_version(struct usbh_ch34x *ch34x_class)
-{
-    struct usb_setup_packet *setup;
-    int ret;
-
-    if (!ch34x_class || !ch34x_class->hport) {
-        return -USB_ERR_INVAL;
-    }
-    setup = ch34x_class->hport->setup;
-
-    setup->bmRequestType = USB_REQUEST_DIR_IN | USB_REQUEST_VENDOR | USB_REQUEST_RECIPIENT_DEVICE;
-    setup->bRequest = CH34X_READ_VERSION;
-    setup->wValue = 0;
-    setup->wIndex = 0;
-    setup->wLength = 2;
-
-    ret = usbh_control_transfer(ch34x_class->hport, setup, g_ch34x_buf);
-    if (ret < 0) {
-        return ret;
-    }
-
-    USB_LOG_INFO("Ch34x chip version %02x:%02x\r\n", g_ch34x_buf[0], g_ch34x_buf[1]);
-    return ret;
-}
-
-static int usbh_ch34x_flow_ctrl(struct usbh_ch34x *ch34x_class)
-{
-    struct usb_setup_packet *setup;
-
-    if (!ch34x_class || !ch34x_class->hport) {
-        return -USB_ERR_INVAL;
-    }
-    setup = ch34x_class->hport->setup;
-
-    setup->bmRequestType = USB_REQUEST_DIR_OUT | USB_REQUEST_VENDOR | USB_REQUEST_RECIPIENT_DEVICE;
-    setup->bRequest = CH34X_WRITE_REG;
-    setup->wValue = 0x2727;
-    setup->wIndex = 0;
-    setup->wLength = 0;
-
-    return usbh_control_transfer(ch34x_class->hport, setup, NULL);
-}
-
-int usbh_ch34x_set_line_coding(struct usbh_ch34x *ch34x_class, struct cdc_line_coding *line_coding)
-{
-    struct usb_setup_packet *setup;
-    uint16_t reg_value = 0;
-    uint16_t value = 0;
-    uint8_t factor = 0;
-    uint8_t divisor = 0;
-
-    if (!ch34x_class || !ch34x_class->hport) {
-        return -USB_ERR_INVAL;
-    }
-    setup = ch34x_class->hport->setup;
-
-    memcpy((uint8_t *)&ch34x_class->line_coding, line_coding, sizeof(struct cdc_line_coding));
-
-    /* refer to https://github.com/WCHSoftGroup/ch341ser_linux/blob/main/driver/ch341.c */
-
-    switch (line_coding->bParityType) {
-        case 0:
-            break;
-        case 1:
-            reg_value |= CH341_L_PO;
-            break;
-        case 2:
-            reg_value |= CH341_L_PE;
-            break;
-        case 3:
-            reg_value |= CH341_L_PM;
-            break;
-        case 4:
-            reg_value |= CH341_L_PS;
-            break;
-        default:
-            return -USB_ERR_INVAL;
-    }
-
-    switch (line_coding->bDataBits) {
-        case 5:
-            reg_value |= CH341_L_D5;
-            break;
-        case 6:
-            reg_value |= CH341_L_D6;
-            break;
-        case 7:
-            reg_value |= CH341_L_D7;
-            break;
-        case 8:
-            reg_value |= CH341_L_D8;
-            break;
-        default:
-            return -USB_ERR_INVAL;
-    }
-
-    if (line_coding->bCharFormat == 2) {
-        reg_value |= CH341_L_SB;
-    }
-
-    reg_value |= 0xC0;
-
-    value |= 0x9c;
-    value |= reg_value << 8;
-
-    usbh_ch34x_get_baudrate_div(line_coding->dwDTERate, &factor, &divisor);
-
-    setup->bmRequestType = USB_REQUEST_DIR_OUT | USB_REQUEST_VENDOR | USB_REQUEST_RECIPIENT_DEVICE;
-    setup->bRequest = CH34X_SERIAL_INIT;
-    setup->wValue = value;
-    setup->wIndex = (factor << 8) | 0x80 | divisor;
-    setup->wLength = 0;
-
-    return usbh_control_transfer(ch34x_class->hport, setup, NULL);
-}
-
-int usbh_ch34x_get_line_coding(struct usbh_ch34x *ch34x_class, struct cdc_line_coding *line_coding)
-{
-    memcpy(line_coding, (uint8_t *)&ch34x_class->line_coding, sizeof(struct cdc_line_coding));
-    return 0;
-}
-
-int usbh_ch34x_set_line_state(struct usbh_ch34x *ch34x_class, bool dtr, bool rts)
-{
-    struct usb_setup_packet *setup;
-
-    if (!ch34x_class || !ch34x_class->hport) {
-        return -USB_ERR_INVAL;
-    }
-    setup = ch34x_class->hport->setup;
-
-    setup->bmRequestType = USB_REQUEST_DIR_OUT | USB_REQUEST_VENDOR | USB_REQUEST_RECIPIENT_DEVICE;
-    setup->bRequest = CH34X_MODEM_CTRL;
-    setup->wValue = 0x0f | (dtr << 5) | (rts << 6);
-    setup->wIndex = 0;
-    setup->wLength = 0;
-
-    return usbh_control_transfer(ch34x_class->hport, setup, NULL);
-}
-
-static int usbh_ch34x_connect(struct usbh_hubport *hport, uint8_t intf)
-{
-    struct usb_endpoint_descriptor *ep_desc;
-    int ret = 0;
-
-    struct usbh_ch34x *ch34x_class = usbh_ch34x_class_alloc();
-    if (ch34x_class == NULL) {
-        USB_LOG_ERR("Fail to alloc ch34x_class\r\n");
-        return -USB_ERR_NOMEM;
-    }
-
-    ch34x_class->hport = hport;
-    ch34x_class->intf = intf;
-
-    hport->config.intf[intf].priv = ch34x_class;
-
-    usbh_ch34x_get_version(ch34x_class);
-    usbh_ch34x_flow_ctrl(ch34x_class);
-
-    for (uint8_t i = 0; i < hport->config.intf[intf].altsetting[0].intf_desc.bNumEndpoints; i++) {
-        ep_desc = &hport->config.intf[intf].altsetting[0].ep[i].ep_desc;
-        if (USB_GET_ENDPOINT_TYPE(ep_desc->bmAttributes) == USB_ENDPOINT_TYPE_INTERRUPT) {
-            continue;
-        } else {
-            if (ep_desc->bEndpointAddress & 0x80) {
-                USBH_EP_INIT(ch34x_class->bulkin, ep_desc);
-            } else {
-                USBH_EP_INIT(ch34x_class->bulkout, ep_desc);
-            }
-        }
-    }
-
-    snprintf(hport->config.intf[intf].devname, CONFIG_USBHOST_DEV_NAMELEN, DEV_FORMAT, ch34x_class->minor);
-
-    USB_LOG_INFO("Register CH34X Class:%s\r\n", hport->config.intf[intf].devname);
-
-#if 0
-    USB_LOG_INFO("Test ch34x rx and tx and rx for 5 times, baudrate is 115200\r\n");
-
-    struct cdc_line_coding linecoding;
-    uint8_t count = 5;
-
-    linecoding.dwDTERate = 115200;
-    linecoding.bDataBits = 8;
-    linecoding.bParityType = 0;
-    linecoding.bCharFormat = 0;
-    usbh_ch34x_set_line_coding(ch34x_class, &linecoding);
-    usbh_ch34x_set_line_state(ch34x_class, true, false);
-
-    memset(g_ch34x_buf, 'a', sizeof(g_ch34x_buf));
-    ret = usbh_ch34x_bulk_out_transfer(ch34x_class, g_ch34x_buf, sizeof(g_ch34x_buf), 0xfffffff);
-    USB_LOG_RAW("out ret:%d\r\n", ret);
-    while (count--) {
-        ret = usbh_ch34x_bulk_in_transfer(ch34x_class, g_ch34x_buf, sizeof(g_ch34x_buf), 0xfffffff);
-        USB_LOG_RAW("in ret:%d\r\n", ret);
-        if (ret > 0) {
-            for (uint32_t i = 0; i < ret; i++) {
-                USB_LOG_RAW("%02x ", g_ch34x_buf[i]);
-            }
-            USB_LOG_RAW("\r\n");
-        }
-    }
-#endif
-    usbh_ch34x_run(ch34x_class);
-    return ret;
-}
-
-static int usbh_ch34x_disconnect(struct usbh_hubport *hport, uint8_t intf)
-{
-    int ret = 0;
-
-    struct usbh_ch34x *ch34x_class = (struct usbh_ch34x *)hport->config.intf[intf].priv;
-
-    if (ch34x_class) {
-        if (ch34x_class->bulkin) {
-            usbh_kill_urb(&ch34x_class->bulkin_urb);
-        }
-
-        if (ch34x_class->bulkout) {
-            usbh_kill_urb(&ch34x_class->bulkout_urb);
-        }
-
-        if (hport->config.intf[intf].devname[0] != '\0') {
-            usb_osal_thread_schedule_other();
-            USB_LOG_INFO("Unregister CH34X Class:%s\r\n", hport->config.intf[intf].devname);
-            usbh_ch34x_stop(ch34x_class);
-        }
-
-        usbh_ch34x_class_free(ch34x_class);
-    }
-
-    return ret;
-}
-
-int usbh_ch34x_bulk_in_transfer(struct usbh_ch34x *ch34x_class, uint8_t *buffer, uint32_t buflen, uint32_t timeout)
-{
-    int ret;
-    struct usbh_urb *urb = &ch34x_class->bulkin_urb;
-
-    usbh_bulk_urb_fill(urb, ch34x_class->hport, ch34x_class->bulkin, buffer, buflen, timeout, NULL, NULL);
-    ret = usbh_submit_urb(urb);
-    if (ret == 0) {
-        ret = urb->actual_length;
-    }
-    return ret;
-}
-
-int usbh_ch34x_bulk_out_transfer(struct usbh_ch34x *ch34x_class, uint8_t *buffer, uint32_t buflen, uint32_t timeout)
-{
-    int ret;
-    struct usbh_urb *urb = &ch34x_class->bulkout_urb;
-
-    usbh_bulk_urb_fill(urb, ch34x_class->hport, ch34x_class->bulkout, buffer, buflen, timeout, NULL, NULL);
-    ret = usbh_submit_urb(urb);
-    if (ret == 0) {
-        ret = urb->actual_length;
-    }
-    return ret;
-}
-
-__WEAK void usbh_ch34x_run(struct usbh_ch34x *ch34x_class)
-{
-    (void)ch34x_class;
-}
-
-__WEAK void usbh_ch34x_stop(struct usbh_ch34x *ch34x_class)
-{
-    (void)ch34x_class;
-}
-
-static const uint16_t ch34x_id_table[][2] = {
-    { 0x1A86, 0x7523 },
-    { 0, 0 },
-};
-
-const struct usbh_class_driver ch34x_class_driver = {
-    .driver_name = "ch34x",
-    .connect = usbh_ch34x_connect,
-    .disconnect = usbh_ch34x_disconnect
-};
-
-CLASS_INFO_DEFINE const struct usbh_class_info ch34x_class_info = {
-    .match_flags = USB_CLASS_MATCH_VID_PID | USB_CLASS_MATCH_INTF_CLASS,
-    .bInterfaceClass = 0xff,
-    .bInterfaceSubClass = 0x00,
-    .bInterfaceProtocol = 0x00,
-    .id_table = ch34x_id_table,
-    .class_driver = &ch34x_class_driver
-};
--- a/class/vendor/serial/usbh_ch34x.h
+++ b/class/vendor/serial/usbh_ch34x.h
@@ -1,76 +0,0 @@
-/*
- * Copyright (c) 2024, sakumisu
- *
- * SPDX-License-Identifier: Apache-2.0
- */
-#ifndef USBH_CH34X_H
-#define USBH_CH34X_H
-
-#include "usb_cdc.h"
-
-/* Requests */
-#define CH34X_READ_VERSION 0x5F
-#define CH34X_WRITE_REG    0x9A
-#define CH34X_READ_REG     0x95
-#define CH34X_SERIAL_INIT  0xA1
-#define CH34X_MODEM_CTRL   0xA4
-
-// modem control bits
-#define CH34X_BIT_RTS (1 << 6)
-#define CH34X_BIT_DTR (1 << 5)
-
-#define CH341_CTO_O   0x10
-#define CH341_CTO_D   0x20
-#define CH341_CTO_R   0x40
-#define CH341_CTI_C   0x01
-#define CH341_CTI_DS  0x02
-#define CH341_CTRL_RI 0x04
-#define CH341_CTI_DC  0x08
-#define CH341_CTI_ST  0x0f
-
-#define CH341_L_ER 0x80
-#define CH341_L_ET 0x40
-#define CH341_L_PS 0x38
-#define CH341_L_PM 0x28
-#define CH341_L_PE 0x18
-#define CH341_L_PO 0x08
-#define CH341_L_SB 0x04
-#define CH341_L_D8 0x03
-#define CH341_L_D7 0x02
-#define CH341_L_D6 0x01
-#define CH341_L_D5 0x00
-
-struct usbh_ch34x {
-    struct usbh_hubport *hport;
-    struct usb_endpoint_descriptor *bulkin;  /* Bulk IN endpoint */
-    struct usb_endpoint_descriptor *bulkout; /* Bulk OUT endpoint */
-    struct usbh_urb bulkout_urb;
-    struct usbh_urb bulkin_urb;
-
-    struct cdc_line_coding line_coding;
-
-    uint8_t intf;
-    uint8_t minor;
-
-    void *user_data;
-};
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-int usbh_ch34x_set_line_coding(struct usbh_ch34x *ch34x_class, struct cdc_line_coding *line_coding);
-int usbh_ch34x_get_line_coding(struct usbh_ch34x *ch34x_class, struct cdc_line_coding *line_coding);
-int usbh_ch34x_set_line_state(struct usbh_ch34x *ch34x_class, bool dtr, bool rts);
-
-int usbh_ch34x_bulk_in_transfer(struct usbh_ch34x *ch34x_class, uint8_t *buffer, uint32_t buflen, uint32_t timeout);
-int usbh_ch34x_bulk_out_transfer(struct usbh_ch34x *ch34x_class, uint8_t *buffer, uint32_t buflen, uint32_t timeout);
-
-void usbh_ch34x_run(struct usbh_ch34x *ch34x_class);
-void usbh_ch34x_stop(struct usbh_ch34x *ch34x_class);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* USBH_CH34X_H */
--- a/class/vendor/serial/usbh_cp210x.c
+++ b/class/vendor/serial/usbh_cp210x.c
@@ -1,328 +0,0 @@
-/*
- * Copyright (c) 2024, sakumisu
- *
- * SPDX-License-Identifier: Apache-2.0
- */
-#include "usbh_core.h"
-#include "usbh_cp210x.h"
-
-#define DEV_FORMAT "/dev/ttyUSB%d"
-
-USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t g_cp210x_buf[USB_ALIGN_UP(64, CONFIG_USB_ALIGN_SIZE)];
-
-#define CONFIG_USBHOST_MAX_CP210X_CLASS 1
-
-static struct usbh_cp210x g_cp210x_class[CONFIG_USBHOST_MAX_CP210X_CLASS];
-static uint32_t g_devinuse = 0;
-
-static struct usbh_cp210x *usbh_cp210x_class_alloc(void)
-{
-    uint8_t devno;
-
-    for (devno = 0; devno < CONFIG_USBHOST_MAX_CP210X_CLASS; devno++) {
-        if ((g_devinuse & (1U << devno)) == 0) {
-            g_devinuse |= (1U << devno);
-            memset(&g_cp210x_class[devno], 0, sizeof(struct usbh_cp210x));
-            g_cp210x_class[devno].minor = devno;
-            return &g_cp210x_class[devno];
-        }
-    }
-    return NULL;
-}
-
-static void usbh_cp210x_class_free(struct usbh_cp210x *cp210x_class)
-{
-    uint8_t devno = cp210x_class->minor;
-
-    if (devno < 32) {
-        g_devinuse &= ~(1U << devno);
-    }
-    memset(cp210x_class, 0, sizeof(struct usbh_cp210x));
-}
-
-static int usbh_cp210x_enable(struct usbh_cp210x *cp210x_class)
-{
-    struct usb_setup_packet *setup;
-
-    if (!cp210x_class || !cp210x_class->hport) {
-        return -USB_ERR_INVAL;
-    }
-    setup = cp210x_class->hport->setup;
-
-    setup->bmRequestType = USB_REQUEST_DIR_OUT | USB_REQUEST_VENDOR | USB_REQUEST_RECIPIENT_INTERFACE;
-    setup->bRequest = CP210X_IFC_ENABLE;
-    setup->wValue = 1;
-    setup->wIndex = cp210x_class->intf;
-    setup->wLength = 0;
-
-    return usbh_control_transfer(cp210x_class->hport, setup, NULL);
-}
-
-static int usbh_cp210x_set_flow(struct usbh_cp210x *cp210x_class)
-{
-    struct usb_setup_packet *setup;
-
-    if (!cp210x_class || !cp210x_class->hport) {
-        return -USB_ERR_INVAL;
-    }
-    setup = cp210x_class->hport->setup;
-
-    setup->bmRequestType = USB_REQUEST_DIR_OUT | USB_REQUEST_VENDOR | USB_REQUEST_RECIPIENT_INTERFACE;
-    setup->bRequest = CP210X_SET_FLOW;
-    setup->wValue = 0;
-    setup->wIndex = cp210x_class->intf;
-    setup->wLength = 16;
-
-    memset(g_cp210x_buf, 0, 16);
-    g_cp210x_buf[13] = 0x20;
-    return usbh_control_transfer(cp210x_class->hport, setup, g_cp210x_buf);
-}
-
-static int usbh_cp210x_set_chars(struct usbh_cp210x *cp210x_class)
-{
-    struct usb_setup_packet *setup;
-
-    if (!cp210x_class || !cp210x_class->hport) {
-        return -USB_ERR_INVAL;
-    }
-    setup = cp210x_class->hport->setup;
-
-    setup->bmRequestType = USB_REQUEST_DIR_OUT | USB_REQUEST_VENDOR | USB_REQUEST_RECIPIENT_INTERFACE;
-    setup->bRequest = CP210X_SET_CHARS;
-    setup->wValue = 0;
-    setup->wIndex = cp210x_class->intf;
-    setup->wLength = 6;
-
-    memset(g_cp210x_buf, 0, 6);
-    g_cp210x_buf[0] = 0x80;
-    g_cp210x_buf[4] = 0x88;
-    g_cp210x_buf[5] = 0x28;
-    return usbh_control_transfer(cp210x_class->hport, setup, g_cp210x_buf);
-}
-
-static int usbh_cp210x_set_baudrate(struct usbh_cp210x *cp210x_class, uint32_t baudrate)
-{
-    struct usb_setup_packet *setup;
-
-    if (!cp210x_class || !cp210x_class->hport) {
-        return -USB_ERR_INVAL;
-    }
-    setup = cp210x_class->hport->setup;
-
-    setup->bmRequestType = USB_REQUEST_DIR_OUT | USB_REQUEST_VENDOR | USB_REQUEST_RECIPIENT_INTERFACE;
-    setup->bRequest = CP210X_SET_BAUDRATE;
-    setup->wValue = 0;
-    setup->wIndex = cp210x_class->intf;
-    setup->wLength = 4;
-
-    memcpy(g_cp210x_buf, (uint8_t *)&baudrate, 4);
-    return usbh_control_transfer(cp210x_class->hport, setup, g_cp210x_buf);
-}
-
-static int usbh_cp210x_set_data_format(struct usbh_cp210x *cp210x_class, uint8_t databits, uint8_t parity, uint8_t stopbits)
-{
-    struct usb_setup_packet *setup;
-    uint16_t value;
-
-    if (!cp210x_class || !cp210x_class->hport) {
-        return -USB_ERR_INVAL;
-    }
-    setup = cp210x_class->hport->setup;
-
-    value = ((databits & 0x0F) << 8) | ((parity & 0x0f) << 4) | ((stopbits & 0x03) << 0);
-
-    setup->bmRequestType = USB_REQUEST_DIR_OUT | USB_REQUEST_VENDOR | USB_REQUEST_RECIPIENT_INTERFACE;
-    setup->bRequest = CP210X_SET_LINE_CTL;
-    setup->wValue = value;
-    setup->wIndex = cp210x_class->intf;
-    setup->wLength = 0;
-
-    return usbh_control_transfer(cp210x_class->hport, setup, NULL);
-}
-
-static int usbh_cp210x_set_mhs(struct usbh_cp210x *cp210x_class, uint8_t dtr, uint8_t rts, uint8_t dtr_mask, uint8_t rts_mask)
-{
-    struct usb_setup_packet *setup;
-    uint16_t value;
-
-    if (!cp210x_class || !cp210x_class->hport) {
-        return -USB_ERR_INVAL;
-    }
-    setup = cp210x_class->hport->setup;
-
-    value = ((dtr & 0x01) << 0) | ((rts & 0x01) << 1) | ((dtr_mask & 0x01) << 8) | ((rts_mask & 0x01) << 9);
-
-    setup->bmRequestType = USB_REQUEST_DIR_OUT | USB_REQUEST_VENDOR | USB_REQUEST_RECIPIENT_INTERFACE;
-    setup->bRequest = CP210X_SET_MHS;
-    setup->wValue = value;
-    setup->wIndex = cp210x_class->intf;
-    setup->wLength = 0;
-
-    return usbh_control_transfer(cp210x_class->hport, setup, NULL);
-}
-
-int usbh_cp210x_set_line_coding(struct usbh_cp210x *cp210x_class, struct cdc_line_coding *line_coding)
-{
-    memcpy((uint8_t *)&cp210x_class->line_coding, line_coding, sizeof(struct cdc_line_coding));
-    usbh_cp210x_set_baudrate(cp210x_class, line_coding->dwDTERate);
-    return usbh_cp210x_set_data_format(cp210x_class, line_coding->bDataBits, line_coding->bParityType, line_coding->bCharFormat);
-}
-
-int usbh_cp210x_get_line_coding(struct usbh_cp210x *cp210x_class, struct cdc_line_coding *line_coding)
-{
-    memcpy(line_coding, (uint8_t *)&cp210x_class->line_coding, sizeof(struct cdc_line_coding));
-    return 0;
-}
-
-int usbh_cp210x_set_line_state(struct usbh_cp210x *cp210x_class, bool dtr, bool rts)
-{
-    return usbh_cp210x_set_mhs(cp210x_class, dtr, rts, 1, 1);
-}
-
-static int usbh_cp210x_connect(struct usbh_hubport *hport, uint8_t intf)
-{
-    struct usb_endpoint_descriptor *ep_desc;
-    int ret = 0;
-
-    struct usbh_cp210x *cp210x_class = usbh_cp210x_class_alloc();
-    if (cp210x_class == NULL) {
-        USB_LOG_ERR("Fail to alloc cp210x_class\r\n");
-        return -USB_ERR_NOMEM;
-    }
-
-    cp210x_class->hport = hport;
-    cp210x_class->intf = intf;
-
-    hport->config.intf[intf].priv = cp210x_class;
-
-    usbh_cp210x_enable(cp210x_class);
-    usbh_cp210x_set_flow(cp210x_class);
-    usbh_cp210x_set_chars(cp210x_class);
-
-    for (uint8_t i = 0; i < hport->config.intf[intf].altsetting[0].intf_desc.bNumEndpoints; i++) {
-        ep_desc = &hport->config.intf[intf].altsetting[0].ep[i].ep_desc;
-
-        if (ep_desc->bEndpointAddress & 0x80) {
-            USBH_EP_INIT(cp210x_class->bulkin, ep_desc);
-        } else {
-            USBH_EP_INIT(cp210x_class->bulkout, ep_desc);
-        }
-    }
-
-    snprintf(hport->config.intf[intf].devname, CONFIG_USBHOST_DEV_NAMELEN, DEV_FORMAT, cp210x_class->minor);
-
-    USB_LOG_INFO("Register CP210X Class:%s\r\n", hport->config.intf[intf].devname);
-
-#if 0
-    USB_LOG_INFO("Test cp2102 rx and tx and rx for 5 times, baudrate is 115200\r\n");
-
-    struct cdc_line_coding linecoding;
-    uint8_t count = 5;
-
-    linecoding.dwDTERate = 115200;
-    linecoding.bDataBits = 8;
-    linecoding.bParityType = 0;
-    linecoding.bCharFormat = 0;
-    usbh_cp210x_set_line_coding(cp210x_class, &linecoding);
-    usbh_cp210x_set_line_state(cp210x_class, true, false);
-
-    memset(g_cp210x_buf, 'a', sizeof(g_cp210x_buf));
-    ret = usbh_cp210x_bulk_out_transfer(cp210x_class, g_cp210x_buf, sizeof(g_cp210x_buf), 0xfffffff);
-    USB_LOG_RAW("out ret:%d\r\n", ret);
-    while (count--) {
-        ret = usbh_cp210x_bulk_in_transfer(cp210x_class, g_cp210x_buf, sizeof(g_cp210x_buf), 0xfffffff);
-        USB_LOG_RAW("in ret:%d\r\n", ret);
-        if (ret > 0) {
-            for (uint32_t i = 0; i < ret; i++) {
-                USB_LOG_RAW("%02x ", g_cp210x_buf[i]);
-            }
-            USB_LOG_RAW("\r\n");
-        }
-    }
-#endif
-    usbh_cp210x_run(cp210x_class);
-    return ret;
-}
-
-static int usbh_cp210x_disconnect(struct usbh_hubport *hport, uint8_t intf)
-{
-    int ret = 0;
-
-    struct usbh_cp210x *cp210x_class = (struct usbh_cp210x *)hport->config.intf[intf].priv;
-
-    if (cp210x_class) {
-        if (cp210x_class->bulkin) {
-            usbh_kill_urb(&cp210x_class->bulkin_urb);
-        }
-
-        if (cp210x_class->bulkout) {
-            usbh_kill_urb(&cp210x_class->bulkout_urb);
-        }
-
-        if (hport->config.intf[intf].devname[0] != '\0') {
-            usb_osal_thread_schedule_other();
-            USB_LOG_INFO("Unregister CP210X Class:%s\r\n", hport->config.intf[intf].devname);
-            usbh_cp210x_stop(cp210x_class);
-        }
-
-        usbh_cp210x_class_free(cp210x_class);
-    }
-
-    return ret;
-}
-
-int usbh_cp210x_bulk_in_transfer(struct usbh_cp210x *cp210x_class, uint8_t *buffer, uint32_t buflen, uint32_t timeout)
-{
-    int ret;
-    struct usbh_urb *urb = &cp210x_class->bulkin_urb;
-
-    usbh_bulk_urb_fill(urb, cp210x_class->hport, cp210x_class->bulkin, buffer, buflen, timeout, NULL, NULL);
-    ret = usbh_submit_urb(urb);
-    if (ret == 0) {
-        ret = urb->actual_length;
-    }
-    return ret;
-}
-
-int usbh_cp210x_bulk_out_transfer(struct usbh_cp210x *cp210x_class, uint8_t *buffer, uint32_t buflen, uint32_t timeout)
-{
-    int ret;
-    struct usbh_urb *urb = &cp210x_class->bulkout_urb;
-
-    usbh_bulk_urb_fill(urb, cp210x_class->hport, cp210x_class->bulkout, buffer, buflen, timeout, NULL, NULL);
-    ret = usbh_submit_urb(urb);
-    if (ret == 0) {
-        ret = urb->actual_length;
-    }
-    return ret;
-}
-
-__WEAK void usbh_cp210x_run(struct usbh_cp210x *cp210x_class)
-{
-    (void)cp210x_class;
-}
-
-__WEAK void usbh_cp210x_stop(struct usbh_cp210x *cp210x_class)
-{
-    (void)cp210x_class;
-}
-
-static const uint16_t cp210x_id_table[][2] = {
-    { 0x10C4, 0xEA60 },
-    { 0, 0 },
-};
-
-const struct usbh_class_driver cp210x_class_driver = {
-    .driver_name = "cp210x",
-    .connect = usbh_cp210x_connect,
-    .disconnect = usbh_cp210x_disconnect
-};
-
-CLASS_INFO_DEFINE const struct usbh_class_info cp210x_class_info = {
-    .match_flags = USB_CLASS_MATCH_VID_PID | USB_CLASS_MATCH_INTF_CLASS,
-    .bInterfaceClass = 0xff,
-    .bInterfaceSubClass = 0x00,
-    .bInterfaceProtocol = 0x00,
-    .id_table = cp210x_id_table,
-    .class_driver = &cp210x_class_driver
-};
--- a/class/vendor/serial/usbh_cp210x.h
+++ b/class/vendor/serial/usbh_cp210x.h
@@ -1,73 +0,0 @@
-/*
- * Copyright (c) 2024, sakumisu
- *
- * SPDX-License-Identifier: Apache-2.0
- */
-#ifndef USBH_CP210X_H
-#define USBH_CP210X_H
-
-#include "usb_cdc.h"
-
-/* Requests */
-#define CP210X_IFC_ENABLE      0x00
-#define CP210X_SET_BAUDDIV     0x01
-#define CP210X_GET_BAUDDIV     0x02
-#define CP210X_SET_LINE_CTL    0x03 // Set parity, data bits, stop bits
-#define CP210X_GET_LINE_CTL    0x04
-#define CP210X_SET_BREAK       0x05
-#define CP210X_IMM_CHAR        0x06
-#define CP210X_SET_MHS         0x07 // Set DTR, RTS
-#define CP210X_GET_MDMSTS      0x08
-#define CP210X_SET_XON         0x09
-#define CP210X_SET_XOFF        0x0A
-#define CP210X_SET_EVENTMASK   0x0B
-#define CP210X_GET_EVENTMASK   0x0C
-#define CP210X_SET_CHAR        0x0D
-#define CP210X_GET_CHARS       0x0E
-#define CP210X_GET_PROPS       0x0F
-#define CP210X_GET_COMM_STATUS 0x10
-#define CP210X_RESET           0x11
-#define CP210X_PURGE           0x12
-#define CP210X_SET_FLOW        0x13
-#define CP210X_GET_FLOW        0x14
-#define CP210X_EMBED_EVENTS    0x15
-#define CP210X_GET_EVENTSTATE  0x16
-#define CP210X_SET_CHARS       0x19
-#define CP210X_GET_BAUDRATE    0x1D
-#define CP210X_SET_BAUDRATE    0x1E // Set baudrate
-#define CP210X_VENDOR_SPECIFIC 0xFF
-
-struct usbh_cp210x {
-    struct usbh_hubport *hport;
-    struct usb_endpoint_descriptor *bulkin;  /* Bulk IN endpoint */
-    struct usb_endpoint_descriptor *bulkout; /* Bulk OUT endpoint */
-    struct usbh_urb bulkout_urb;
-    struct usbh_urb bulkin_urb;
-
-    struct cdc_line_coding line_coding;
-
-    uint8_t intf;
-    uint8_t minor;
-
-    void *user_data;
-};
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-int usbh_cp210x_set_line_coding(struct usbh_cp210x *ftdi_class, struct cdc_line_coding *line_coding);
-int usbh_cp210x_get_line_coding(struct usbh_cp210x *ftdi_class, struct cdc_line_coding *line_coding);
-int usbh_cp210x_set_line_state(struct usbh_cp210x *ftdi_class, bool dtr, bool rts);
-
-int usbh_cp210x_bulk_in_transfer(struct usbh_cp210x *cp210x_class, uint8_t *buffer, uint32_t buflen, uint32_t timeout);
-int usbh_cp210x_bulk_out_transfer(struct usbh_cp210x *cp210x_class, uint8_t *buffer, uint32_t buflen, uint32_t timeout);
-
-void usbh_cp210x_run(struct usbh_cp210x *cp210x_class);
-void usbh_cp210x_stop(struct usbh_cp210x *cp210x_class);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* USBH_CP210X_H */
--- a/class/vendor/serial/usbh_ftdi.c
+++ b/class/vendor/serial/usbh_ftdi.c
@@ -1,510 +0,0 @@
-/*
- * Copyright (c) 2024, sakumisu
- *
- * SPDX-License-Identifier: Apache-2.0
- */
-#include "usbh_core.h"
-#include "usbh_ftdi.h"
-
-#define DEV_FORMAT "/dev/ttyUSB%d"
-
-USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t g_ftdi_buf[USB_ALIGN_UP(64, CONFIG_USB_ALIGN_SIZE)];
-
-#define CONFIG_USBHOST_MAX_FTDI_CLASS 1
-
-static struct usbh_ftdi g_ftdi_class[CONFIG_USBHOST_MAX_FTDI_CLASS];
-static uint32_t g_devinuse = 0;
-
-static const char *ftdi_chip_name[] = {
-    [SIO] = "SIO", /* the serial part of FT8U100AX */
-    [FT232A] = "FT232A",
-    [FT232B] = "FT232B",
-    [FT2232C] = "FT2232C/D",
-    [FT232R] = "FT232R",
-    [FT232H] = "FT232H",
-    [FT2232H] = "FT2232H",
-    [FT4232H] = "FT4232H",
-    [FT4232HA] = "FT4232HA",
-    [FT232HP] = "FT232HP",
-    [FT233HP] = "FT233HP",
-    [FT2232HP] = "FT2232HP",
-    [FT2233HP] = "FT2233HP",
-    [FT4232HP] = "FT4232HP",
-    [FT4233HP] = "FT4233HP",
-    [FTX] = "FT-X",
-};
-
-static struct usbh_ftdi *usbh_ftdi_class_alloc(void)
-{
-    uint8_t devno;
-
-    for (devno = 0; devno < CONFIG_USBHOST_MAX_FTDI_CLASS; devno++) {
-        if ((g_devinuse & (1U << devno)) == 0) {
-            g_devinuse |= (1U << devno);
-            memset(&g_ftdi_class[devno], 0, sizeof(struct usbh_ftdi));
-            g_ftdi_class[devno].minor = devno;
-            return &g_ftdi_class[devno];
-        }
-    }
-    return NULL;
-}
-
-static void usbh_ftdi_class_free(struct usbh_ftdi *ftdi_class)
-{
-    uint8_t devno = ftdi_class->minor;
-
-    if (devno < 32) {
-        g_devinuse &= ~(1U << devno);
-    }
-    memset(ftdi_class, 0, sizeof(struct usbh_ftdi));
-}
-
-/*
- * Divide positive or negative dividend by positive or negative divisor
- * and round to closest integer. Result is undefined for negative
- * divisors if the dividend variable type is unsigned and for negative
- * dividends if the divisor variable type is unsigned.
- */
-#define DIV_ROUND_CLOSEST(x, divisor) (       \
-    {                                         \
-        typeof(x) __x = x;                    \
-        typeof(divisor) __d = divisor;        \
-        (((typeof(x))-1) > 0 ||               \
-         ((typeof(divisor))-1) > 0 ||         \
-         (((__x) > 0) == ((__d) > 0))) ?      \
-            (((__x) + ((__d) / 2)) / (__d)) : \
-            (((__x) - ((__d) / 2)) / (__d));  \
-    })
-
-static uint32_t ftdi_232bm_baud_base_to_divisor(uint32_t baud, int base)
-{
-    static const unsigned char divfrac[8] = { 0, 3, 2, 4, 1, 5, 6, 7 };
-    uint32_t divisor;
-    /* divisor shifted 3 bits to the left */
-    int divisor3 = DIV_ROUND_CLOSEST(base, 2 * baud);
-    divisor = divisor3 >> 3;
-    divisor |= (uint32_t)divfrac[divisor3 & 0x7] << 14;
-    /* Deal with special cases for highest baud rates. */
-    if (divisor == 1) /* 1.0 */
-        divisor = 0;
-    else if (divisor == 0x4001) /* 1.5 */
-        divisor = 1;
-    return divisor;
-}
-
-static uint32_t ftdi_232bm_baud_to_divisor(uint32_t baud)
-{
-    return ftdi_232bm_baud_base_to_divisor(baud, 48000000);
-}
-
-static uint32_t ftdi_2232h_baud_base_to_divisor(uint32_t baud, int base)
-{
-    static const unsigned char divfrac[8] = { 0, 3, 2, 4, 1, 5, 6, 7 };
-    uint32_t divisor;
-    int divisor3;
-
-    /* hi-speed baud rate is 10-bit sampling instead of 16-bit */
-    divisor3 = DIV_ROUND_CLOSEST(8 * base, 10 * baud);
-
-    divisor = divisor3 >> 3;
-    divisor |= (uint32_t)divfrac[divisor3 & 0x7] << 14;
-    /* Deal with special cases for highest baud rates. */
-    if (divisor == 1) /* 1.0 */
-        divisor = 0;
-    else if (divisor == 0x4001) /* 1.5 */
-        divisor = 1;
-    /*
-	 * Set this bit to turn off a divide by 2.5 on baud rate generator
-	 * This enables baud rates up to 12Mbaud but cannot reach below 1200
-	 * baud with this bit set
-	 */
-    divisor |= 0x00020000;
-    return divisor;
-}
-
-static uint32_t ftdi_2232h_baud_to_divisor(uint32_t baud)
-{
-    return ftdi_2232h_baud_base_to_divisor(baud, 120000000);
-}
-
-int usbh_ftdi_reset(struct usbh_ftdi *ftdi_class)
-{
-    struct usb_setup_packet *setup;
-
-    if (!ftdi_class || !ftdi_class->hport) {
-        return -USB_ERR_INVAL;
-    }
-    setup = ftdi_class->hport->setup;
-
-    setup->bmRequestType = USB_REQUEST_DIR_OUT | USB_REQUEST_VENDOR | USB_REQUEST_RECIPIENT_DEVICE;
-    setup->bRequest = SIO_RESET_REQUEST;
-    setup->wValue = 0;
-    setup->wIndex = ftdi_class->intf;
-    setup->wLength = 0;
-
-    return usbh_control_transfer(ftdi_class->hport, setup, NULL);
-}
-
-static int usbh_ftdi_set_modem(struct usbh_ftdi *ftdi_class, uint16_t value)
-{
-    struct usb_setup_packet *setup;
-
-    if (!ftdi_class || !ftdi_class->hport) {
-        return -USB_ERR_INVAL;
-    }
-    setup = ftdi_class->hport->setup;
-
-    setup->bmRequestType = USB_REQUEST_DIR_OUT | USB_REQUEST_VENDOR | USB_REQUEST_RECIPIENT_DEVICE;
-    setup->bRequest = SIO_SET_MODEM_CTRL_REQUEST;
-    setup->wValue = value;
-    setup->wIndex = ftdi_class->intf;
-    setup->wLength = 0;
-
-    return usbh_control_transfer(ftdi_class->hport, setup, NULL);
-}
-
-static int usbh_ftdi_set_baudrate(struct usbh_ftdi *ftdi_class, uint32_t baudrate)
-{
-    struct usb_setup_packet *setup;
-    uint32_t div_value;
-    uint16_t value;
-    uint8_t baudrate_high;
-
-    if (!ftdi_class || !ftdi_class->hport) {
-        return -USB_ERR_INVAL;
-    }
-    setup = ftdi_class->hport->setup;
-
-    switch (ftdi_class->chip_type) {
-        case FT232B:
-        case FT2232C:
-        case FT232R:
-            if (baudrate > 3000000) {
-                return -USB_ERR_INVAL;
-            }
-            div_value = ftdi_232bm_baud_to_divisor(baudrate);
-            break;
-        default:
-            if ((baudrate <= 12000000) && (baudrate >= 1200)) {
-                div_value = ftdi_2232h_baud_to_divisor(baudrate);
-            } else {
-                return -USB_ERR_INVAL;
-            }
-            break;
-    }
-
-    value = div_value & 0xFFFF;
-    baudrate_high = (div_value >> 16) & 0xff;
-
-    setup->bmRequestType = USB_REQUEST_DIR_OUT | USB_REQUEST_VENDOR | USB_REQUEST_RECIPIENT_DEVICE;
-    setup->bRequest = SIO_SET_BAUDRATE_REQUEST;
-    setup->wValue = value;
-    setup->wIndex = (baudrate_high << 8) | ftdi_class->intf;
-    setup->wLength = 0;
-
-    return usbh_control_transfer(ftdi_class->hport, setup, NULL);
-}
-
-static int usbh_ftdi_set_data_format(struct usbh_ftdi *ftdi_class, uint8_t databits, uint8_t parity, uint8_t stopbits, uint8_t isbreak)
-{
-    /**
-     * D0-D7 databits  BITS_7=7, BITS_8=8
-     * D8-D10 parity  NONE=0, ODD=1, EVEN=2, MARK=3, SPACE=4
-     * D11-D12 		STOP_BIT_1=0, STOP_BIT_15=1, STOP_BIT_2=2
-     * D14  		BREAK_OFF=0, BREAK_ON=1
-     **/
-    struct usb_setup_packet *setup;
-    uint16_t value;
-
-    if (!ftdi_class || !ftdi_class->hport) {
-        return -USB_ERR_INVAL;
-    }
-    setup = ftdi_class->hport->setup;
-
-    value = ((isbreak & 0x01) << 14) | ((stopbits & 0x03) << 11) | ((parity & 0x0f) << 8) | (databits & 0x0f);
-
-    setup->bmRequestType = USB_REQUEST_DIR_OUT | USB_REQUEST_VENDOR | USB_REQUEST_RECIPIENT_DEVICE;
-    setup->bRequest = SIO_SET_DATA_REQUEST;
-    setup->wValue = value;
-    setup->wIndex = ftdi_class->intf;
-    setup->wLength = 0;
-
-    return usbh_control_transfer(ftdi_class->hport, setup, NULL);
-}
-
-static int usbh_ftdi_set_latency_timer(struct usbh_ftdi *ftdi_class, uint16_t value)
-{
-    struct usb_setup_packet *setup;
-
-    if (!ftdi_class || !ftdi_class->hport) {
-        return -USB_ERR_INVAL;
-    }
-    setup = ftdi_class->hport->setup;
-
-    setup->bmRequestType = USB_REQUEST_DIR_OUT | USB_REQUEST_VENDOR | USB_REQUEST_RECIPIENT_DEVICE;
-    setup->bRequest = SIO_SET_LATENCY_TIMER_REQUEST;
-    setup->wValue = value;
-    setup->wIndex = ftdi_class->intf;
-    setup->wLength = 0;
-
-    return usbh_control_transfer(ftdi_class->hport, setup, NULL);
-}
-
-static int usbh_ftdi_set_flow_ctrl(struct usbh_ftdi *ftdi_class, uint16_t value)
-{
-    struct usb_setup_packet *setup;
-
-    if (!ftdi_class || !ftdi_class->hport) {
-        return -USB_ERR_INVAL;
-    }
-    setup = ftdi_class->hport->setup;
-
-    setup->bmRequestType = USB_REQUEST_DIR_OUT | USB_REQUEST_VENDOR | USB_REQUEST_RECIPIENT_DEVICE;
-    setup->bRequest = SIO_SET_FLOW_CTRL_REQUEST;
-    setup->wValue = value;
-    setup->wIndex = ftdi_class->intf;
-    setup->wLength = 0;
-
-    return usbh_control_transfer(ftdi_class->hport, setup, NULL);
-}
-
-static int usbh_ftdi_read_modem_status(struct usbh_ftdi *ftdi_class)
-{
-    struct usb_setup_packet *setup;
-    int ret;
-
-    if (!ftdi_class || !ftdi_class->hport) {
-        return -USB_ERR_INVAL;
-    }
-    setup = ftdi_class->hport->setup;
-
-    setup->bmRequestType = USB_REQUEST_DIR_IN | USB_REQUEST_VENDOR | USB_REQUEST_RECIPIENT_DEVICE;
-    setup->bRequest = SIO_POLL_MODEM_STATUS_REQUEST;
-    setup->wValue = 0x0000;
-    setup->wIndex = ftdi_class->intf;
-    setup->wLength = 2;
-
-    ret = usbh_control_transfer(ftdi_class->hport, setup, g_ftdi_buf);
-    if (ret < 0) {
-        return ret;
-    }
-    memcpy(ftdi_class->modem_status, g_ftdi_buf, 2);
-    return ret;
-}
-
-int usbh_ftdi_set_line_coding(struct usbh_ftdi *ftdi_class, struct cdc_line_coding *line_coding)
-{
-    memcpy((uint8_t *)&ftdi_class->line_coding, line_coding, sizeof(struct cdc_line_coding));
-
-    int ret = usbh_ftdi_set_baudrate(ftdi_class, line_coding->dwDTERate);
-    if (ret < 0) {
-        return ret;
-    }
-    return usbh_ftdi_set_data_format(ftdi_class, line_coding->bDataBits, line_coding->bParityType, line_coding->bCharFormat, 0);
-}
-
-int usbh_ftdi_get_line_coding(struct usbh_ftdi *ftdi_class, struct cdc_line_coding *line_coding)
-{
-    memcpy(line_coding, (uint8_t *)&ftdi_class->line_coding, sizeof(struct cdc_line_coding));
-    return 0;
-}
-
-int usbh_ftdi_set_line_state(struct usbh_ftdi *ftdi_class, bool dtr, bool rts)
-{
-    int ret;
-
-    if (dtr) {
-        usbh_ftdi_set_modem(ftdi_class, SIO_SET_DTR_HIGH);
-    } else {
-        usbh_ftdi_set_modem(ftdi_class, SIO_SET_DTR_LOW);
-    }
-
-    if (rts) {
-        ret = usbh_ftdi_set_modem(ftdi_class, SIO_SET_RTS_HIGH);
-    } else {
-        ret = usbh_ftdi_set_modem(ftdi_class, SIO_SET_RTS_LOW);
-    }
-
-    return ret;
-}
-
-static int usbh_ftdi_connect(struct usbh_hubport *hport, uint8_t intf)
-{
-    struct usb_endpoint_descriptor *ep_desc;
-    int ret = 0;
-    uint16_t version;
-
-    struct usbh_ftdi *ftdi_class = usbh_ftdi_class_alloc();
-    if (ftdi_class == NULL) {
-        USB_LOG_ERR("Fail to alloc ftdi_class\r\n");
-        return -USB_ERR_NOMEM;
-    }
-
-    ftdi_class->hport = hport;
-    ftdi_class->intf = intf;
-
-    hport->config.intf[intf].priv = ftdi_class;
-
-    version = hport->device_desc.bcdDevice;
-
-    switch (version) {
-        case 0x400:
-            ftdi_class->chip_type = FT232B;
-            break;
-        case 0x500:
-            ftdi_class->chip_type = FT2232C;
-            break;
-        case 0x600:
-            ftdi_class->chip_type = FT232R;
-            break;
-        case 0x700:
-            ftdi_class->chip_type = FT2232H;
-            break;
-        case 0x800:
-            ftdi_class->chip_type = FT4232H;
-            break;
-        case 0x900:
-            ftdi_class->chip_type = FT232H;
-            break;
-
-        default:
-            USB_LOG_ERR("Unknown FTDI chip version:%04x\r\n", version);
-            return -USB_ERR_NOTSUPP;
-    }
-
-    USB_LOG_INFO("FTDI chip name:%s\r\n", ftdi_chip_name[ftdi_class->chip_type]);
-
-    usbh_ftdi_reset(ftdi_class);
-    usbh_ftdi_set_flow_ctrl(ftdi_class, SIO_DISABLE_FLOW_CTRL);
-    usbh_ftdi_set_latency_timer(ftdi_class, 0x10);
-    usbh_ftdi_read_modem_status(ftdi_class);
-    USB_LOG_INFO("modem status:%02x:%02x\r\n", ftdi_class->modem_status[0], ftdi_class->modem_status[1]);
-
-    for (uint8_t i = 0; i < hport->config.intf[intf].altsetting[0].intf_desc.bNumEndpoints; i++) {
-        ep_desc = &hport->config.intf[intf].altsetting[0].ep[i].ep_desc;
-
-        if (ep_desc->bEndpointAddress & 0x80) {
-            USBH_EP_INIT(ftdi_class->bulkin, ep_desc);
-        } else {
-            USBH_EP_INIT(ftdi_class->bulkout, ep_desc);
-        }
-    }
-
-    snprintf(hport->config.intf[intf].devname, CONFIG_USBHOST_DEV_NAMELEN, DEV_FORMAT, ftdi_class->minor);
-
-    USB_LOG_INFO("Register FTDI Class:%s\r\n", hport->config.intf[intf].devname);
-
-#if 0
-    USB_LOG_INFO("Test ftdi rx and tx and rx for 5 times, baudrate is 115200\r\n");
-
-    struct cdc_line_coding linecoding;
-    uint8_t count = 5;
-
-    linecoding.dwDTERate = 115200;
-    linecoding.bDataBits = 8;
-    linecoding.bParityType = 0;
-    linecoding.bCharFormat = 0;
-    usbh_ftdi_set_line_coding(ftdi_class, &linecoding);
-    usbh_ftdi_set_line_state(ftdi_class, true, false);
-
-    memset(g_ftdi_buf, 'a', sizeof(g_ftdi_buf));
-    ret = usbh_ftdi_bulk_out_transfer(ftdi_class, g_ftdi_buf, sizeof(g_ftdi_buf), 0xfffffff);
-    USB_LOG_RAW("out ret:%d\r\n", ret);
-    while (count--) {
-        ret = usbh_ftdi_bulk_in_transfer(ftdi_class, g_ftdi_buf, sizeof(g_ftdi_buf), 0xfffffff);
-        USB_LOG_RAW("in ret:%d\r\n", ret);
-        if (ret > 0) {
-            for (uint32_t i = 0; i < ret; i++) {
-                USB_LOG_RAW("%02x ", g_ftdi_buf[i]);
-            }
-        }
-        USB_LOG_RAW("\r\n");
-    }
-#endif
-    usbh_ftdi_run(ftdi_class);
-    return ret;
-}
-
-static int usbh_ftdi_disconnect(struct usbh_hubport *hport, uint8_t intf)
-{
-    int ret = 0;
-
-    struct usbh_ftdi *ftdi_class = (struct usbh_ftdi *)hport->config.intf[intf].priv;
-
-    if (ftdi_class) {
-        if (ftdi_class->bulkin) {
-            usbh_kill_urb(&ftdi_class->bulkin_urb);
-        }
-
-        if (ftdi_class->bulkout) {
-            usbh_kill_urb(&ftdi_class->bulkout_urb);
-        }
-
-        if (hport->config.intf[intf].devname[0] != '\0') {
-            usb_osal_thread_schedule_other();
-            USB_LOG_INFO("Unregister FTDI Class:%s\r\n", hport->config.intf[intf].devname);
-            usbh_ftdi_stop(ftdi_class);
-        }
-
-        usbh_ftdi_class_free(ftdi_class);
-    }
-
-    return ret;
-}
-
-int usbh_ftdi_bulk_in_transfer(struct usbh_ftdi *ftdi_class, uint8_t *buffer, uint32_t buflen, uint32_t timeout)
-{
-    int ret;
-    struct usbh_urb *urb = &ftdi_class->bulkin_urb;
-
-    usbh_bulk_urb_fill(urb, ftdi_class->hport, ftdi_class->bulkin, buffer, buflen, timeout, NULL, NULL);
-    ret = usbh_submit_urb(urb);
-    if (ret == 0) {
-        ret = urb->actual_length;
-    }
-    return ret;
-}
-
-int usbh_ftdi_bulk_out_transfer(struct usbh_ftdi *ftdi_class, uint8_t *buffer, uint32_t buflen, uint32_t timeout)
-{
-    int ret;
-    struct usbh_urb *urb = &ftdi_class->bulkout_urb;
-
-    usbh_bulk_urb_fill(urb, ftdi_class->hport, ftdi_class->bulkout, buffer, buflen, timeout, NULL, NULL);
-    ret = usbh_submit_urb(urb);
-    if (ret == 0) {
-        ret = urb->actual_length;
-    }
-    return ret;
-}
-
-__WEAK void usbh_ftdi_run(struct usbh_ftdi *ftdi_class)
-{
-    (void)ftdi_class;
-}
-
-__WEAK void usbh_ftdi_stop(struct usbh_ftdi *ftdi_class)
-{
-    (void)ftdi_class;
-}
-
-static const uint16_t ftdi_id_table[][2] = {
-    { 0x0403, 0x6001 },
-    { 0x0403, 0x6010 },
-    { 0, 0 },
-};
-
-const struct usbh_class_driver ftdi_class_driver = {
-    .driver_name = "ftdi",
-    .connect = usbh_ftdi_connect,
-    .disconnect = usbh_ftdi_disconnect
-};
-
-CLASS_INFO_DEFINE const struct usbh_class_info ftdi_class_info = {
-    .match_flags = USB_CLASS_MATCH_VID_PID | USB_CLASS_MATCH_INTF_CLASS,
-    .bInterfaceClass = 0xff,
-    .bInterfaceSubClass = 0x00,
-    .bInterfaceProtocol = 0x00,
-    .id_table = ftdi_id_table,
-    .class_driver = &ftdi_class_driver
-};
--- a/class/vendor/serial/usbh_ftdi.h
+++ b/class/vendor/serial/usbh_ftdi.h
@@ -1,96 +0,0 @@
-/*
- * Copyright (c) 2024, sakumisu
- *
- * SPDX-License-Identifier: Apache-2.0
- */
-#ifndef USBH_FTDI_H
-#define USBH_FTDI_H
-
-#include "usb_cdc.h"
-
-/* Requests */
-#define SIO_RESET_REQUEST             0x00 /* Reset the port */
-#define SIO_SET_MODEM_CTRL_REQUEST    0x01 /* Set the modem control register */
-#define SIO_SET_FLOW_CTRL_REQUEST     0x02 /* Set flow control register */
-#define SIO_SET_BAUDRATE_REQUEST      0x03 /* Set baud rate */
-#define SIO_SET_DATA_REQUEST          0x04 /* Set the data characteristics of the port */
-#define SIO_POLL_MODEM_STATUS_REQUEST 0x05
-#define SIO_SET_EVENT_CHAR_REQUEST    0x06
-#define SIO_SET_ERROR_CHAR_REQUEST    0x07
-#define SIO_SET_LATENCY_TIMER_REQUEST 0x09
-#define SIO_GET_LATENCY_TIMER_REQUEST 0x0A
-#define SIO_SET_BITMODE_REQUEST       0x0B
-#define SIO_READ_PINS_REQUEST         0x0C
-#define SIO_READ_EEPROM_REQUEST       0x90
-#define SIO_WRITE_EEPROM_REQUEST      0x91
-#define SIO_ERASE_EEPROM_REQUEST      0x92
-
-#define SIO_DISABLE_FLOW_CTRL 0x0
-#define SIO_RTS_CTS_HS        (0x1 << 8)
-#define SIO_DTR_DSR_HS        (0x2 << 8)
-#define SIO_XON_XOFF_HS       (0x4 << 8)
-
-#define SIO_SET_DTR_MASK 0x1
-#define SIO_SET_DTR_HIGH (1 | (SIO_SET_DTR_MASK << 8))
-#define SIO_SET_DTR_LOW  (0 | (SIO_SET_DTR_MASK << 8))
-#define SIO_SET_RTS_MASK 0x2
-#define SIO_SET_RTS_HIGH (2 | (SIO_SET_RTS_MASK << 8))
-#define SIO_SET_RTS_LOW  (0 | (SIO_SET_RTS_MASK << 8))
-
-#define SIO_RTS_CTS_HS (0x1 << 8)
-
-enum ftdi_chip_type {
-    SIO,
-    FT232A,
-    FT232B,
-    FT2232C,
-    FT232R,
-    FT232H,
-    FT2232H,
-    FT4232H,
-    FT4232HA,
-    FT232HP,
-    FT233HP,
-    FT2232HP,
-    FT2233HP,
-    FT4232HP,
-    FT4233HP,
-    FTX,
-};
-
-struct usbh_ftdi {
-    struct usbh_hubport *hport;
-    struct usb_endpoint_descriptor *bulkin;  /* Bulk IN endpoint */
-    struct usb_endpoint_descriptor *bulkout; /* Bulk OUT endpoint */
-    struct usbh_urb bulkout_urb;
-    struct usbh_urb bulkin_urb;
-
-    struct cdc_line_coding line_coding;
-
-    uint8_t intf;
-    uint8_t minor;
-    uint8_t modem_status[2];
-    enum ftdi_chip_type chip_type;
-
-    void *user_data;
-};
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-int usbh_ftdi_set_line_coding(struct usbh_ftdi *ftdi_class, struct cdc_line_coding *line_coding);
-int usbh_ftdi_get_line_coding(struct usbh_ftdi *ftdi_class, struct cdc_line_coding *line_coding);
-int usbh_ftdi_set_line_state(struct usbh_ftdi *ftdi_class, bool dtr, bool rts);
-
-int usbh_ftdi_bulk_in_transfer(struct usbh_ftdi *ftdi_class, uint8_t *buffer, uint32_t buflen, uint32_t timeout);
-int usbh_ftdi_bulk_out_transfer(struct usbh_ftdi *ftdi_class, uint8_t *buffer, uint32_t buflen, uint32_t timeout);
-
-void usbh_ftdi_run(struct usbh_ftdi *ftdi_class);
-void usbh_ftdi_stop(struct usbh_ftdi *ftdi_class);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* USBH_FTDI_H */
--- a/class/vendor/serial/usbh_pl2303.c
+++ b/class/vendor/serial/usbh_pl2303.c
@@ -1,449 +0,0 @@
-/*
- * Copyright (c) 2024, sakumisu
- * Copyright (c) 2024, Derek Konigsberg
- *
- * SPDX-License-Identifier: Apache-2.0
- */
-#include "usbh_core.h"
-#include "usbh_pl2303.h"
-
-#undef USB_DBG_TAG
-#define USB_DBG_TAG "usbh_pl2303"
-#include "usb_log.h"
-
-#define DEV_FORMAT "/dev/ttyUSB%d"
-
-USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t g_pl2303_buf[USB_ALIGN_UP(64, CONFIG_USB_ALIGN_SIZE)];
-
-#define CONFIG_USBHOST_MAX_PL2303_CLASS 1
-
-#define UT_WRITE_VENDOR_DEVICE   (USB_REQUEST_DIR_OUT | USB_REQUEST_VENDOR | USB_REQUEST_RECIPIENT_DEVICE)
-#define UT_READ_VENDOR_DEVICE    (USB_REQUEST_DIR_IN | USB_REQUEST_VENDOR | USB_REQUEST_RECIPIENT_DEVICE)
-
-static struct usbh_pl2303 g_pl2303_class[CONFIG_USBHOST_MAX_PL2303_CLASS];
-static uint32_t g_devinuse = 0;
-
-static struct usbh_pl2303 *usbh_pl2303_class_alloc(void)
-{
-    uint8_t devno;
-
-    for (devno = 0; devno < CONFIG_USBHOST_MAX_PL2303_CLASS; devno++) {
-        if ((g_devinuse & (1U << devno)) == 0) {
-            g_devinuse |= (1U << devno);
-            memset(&g_pl2303_class[devno], 0, sizeof(struct usbh_pl2303));
-            g_pl2303_class[devno].minor = devno;
-            return &g_pl2303_class[devno];
-        }
-    }
-    return NULL;
-}
-
-static void usbh_pl2303_class_free(struct usbh_pl2303 *pl2303_class)
-{
-    uint8_t devno = pl2303_class->minor;
-
-    if (devno < 32) {
-        g_devinuse &= ~(1U << devno);
-    }
-    memset(pl2303_class, 0, sizeof(struct usbh_pl2303));
-}
-
-static int usbh_pl2303_get_chiptype(struct usbh_pl2303 *pl2303_class)
-{
-    int ret = 0;
-
-    switch (pl2303_class->hport->device_desc.bcdDevice) {
-        case 0x0300:
-            pl2303_class->chiptype = USBH_PL2303_TYPE_PL2303HX;
-            /* or TA, that is HX with external crystal */
-            break;
-        case 0x0400:
-            pl2303_class->chiptype = USBH_PL2303_TYPE_PL2303HXD;
-            /* or EA, that is HXD with ESD protection */
-            /* or RA, that has internal voltage level converter that works only up to 1Mbaud (!) */
-            break;
-        case 0x0500:
-            pl2303_class->chiptype = USBH_PL2303_TYPE_PL2303HXD;
-            /* in fact it's TB, that is HXD with external crystal */
-            break;
-        default:
-            /* NOTE: I have no info about the bcdDevice for the base PL2303 (up to 1.2Mbaud,
-           only fixed rates) and for PL2303SA (8-pin chip, up to 115200 baud */
-            /* Determine the chip type.  This algorithm is taken from Linux. */
-            if (pl2303_class->hport->device_desc.bDeviceClass == 0x02) {
-                pl2303_class->chiptype = USBH_PL2303_TYPE_PL2303;
-            } else if (pl2303_class->hport->device_desc.bMaxPacketSize0 == 0x40) {
-                pl2303_class->chiptype = USBH_PL2303_TYPE_PL2303HX;
-            } else {
-                pl2303_class->chiptype = USBH_PL2303_TYPE_PL2303;
-            }
-            break;
-    }
-
-    /*
-     * The new chip revision PL2303HXN is only compatible with the new
-     * PLCOM_SET_REQUEST_PL2303HXN command. Issuing the old command
-     * PLCOM_SET_REQUEST to the new chip raises an error. Thus, PL2303HX
-     * and PL2303HXN can be distinguished by issuing an old-style request
-     * (on a status register) to the new chip and checking the error.
-     */
-    if (pl2303_class->chiptype == USBH_PL2303_TYPE_PL2303HX) {
-        struct usb_setup_packet *setup = pl2303_class->hport->setup;
-
-        setup->bmRequestType = UT_READ_VENDOR_DEVICE;
-        setup->bRequest = PL2303_SET_REQUEST;
-        setup->wValue = PL2303_STATUS_REG_PL2303HX;
-        setup->wIndex = 0;
-        setup->wLength = 1;
-
-        ret = usbh_control_transfer(pl2303_class->hport, setup, g_pl2303_buf);
-        if (ret == -USB_ERR_STALL) {
-            pl2303_class->chiptype = USBH_PL2303_TYPE_PL2303HXN;
-            ret = 0;
-        } else if (ret < 0) {
-            USB_LOG_WRN("Error checking chip type: %d\r\n", ret);
-            return ret;
-        }
-    }
-
-    switch (pl2303_class->chiptype) {
-        case USBH_PL2303_TYPE_PL2303:
-            USB_LOG_INFO("chiptype = 2303\r\n");
-            break;
-        case USBH_PL2303_TYPE_PL2303HX:
-            USB_LOG_INFO("chiptype = 2303HX/TA\r\n");
-            break;
-        case USBH_PL2303_TYPE_PL2303HXN:
-            USB_LOG_INFO("chiptype = 2303HXN\r\n");
-            break;
-        case USBH_PL2303_TYPE_PL2303HXD:
-            USB_LOG_INFO("chiptype = 2303HXD/TB/RA/EA\r\n");
-            break;
-        default:
-            USB_LOG_INFO("chiptype = [%d]\r\n", pl2303_class->chiptype);
-            break;
-    }
-
-    return ret;
-}
-
-static int usbh_pl2303_do(struct usbh_pl2303 *pl2303_class,
-                          uint8_t req_type, uint8_t request, uint16_t value, uint16_t index,
-                          uint16_t length)
-{
-    struct usb_setup_packet *setup;
-
-    if (!pl2303_class || !pl2303_class->hport) {
-        return -USB_ERR_INVAL;
-    }
-    setup = pl2303_class->hport->setup;
-
-    setup->bmRequestType = req_type;
-    setup->bRequest = request;
-    setup->wValue = value;
-    setup->wIndex = index;
-    setup->wLength = length;
-
-    return usbh_control_transfer(pl2303_class->hport, setup, g_pl2303_buf);
-}
-
-int usbh_pl2303_set_line_coding(struct usbh_pl2303 *pl2303_class, struct cdc_line_coding *line_coding)
-{
-    struct usb_setup_packet *setup;
-
-    if (!pl2303_class || !pl2303_class->hport) {
-        return -USB_ERR_INVAL;
-    }
-    setup = pl2303_class->hport->setup;
-
-    setup->bmRequestType = USB_REQUEST_DIR_OUT | USB_REQUEST_CLASS | USB_REQUEST_RECIPIENT_INTERFACE;
-    setup->bRequest = CDC_REQUEST_SET_LINE_CODING;
-    setup->wValue = 0;
-    setup->wIndex = pl2303_class->intf;
-    setup->wLength = 7;
-
-    memcpy(g_pl2303_buf, line_coding, sizeof(struct cdc_line_coding));
-
-    return usbh_control_transfer(pl2303_class->hport, setup, g_pl2303_buf);
-}
-
-int usbh_pl2303_get_line_coding(struct usbh_pl2303 *pl2303_class, struct cdc_line_coding *line_coding)
-{
-    struct usb_setup_packet *setup;
-    int ret;
-
-    if (!pl2303_class || !pl2303_class->hport) {
-        return -USB_ERR_INVAL;
-    }
-    setup = pl2303_class->hport->setup;
-
-    setup->bmRequestType = USB_REQUEST_DIR_IN | USB_REQUEST_CLASS | USB_REQUEST_RECIPIENT_INTERFACE;
-    setup->bRequest = CDC_REQUEST_GET_LINE_CODING;
-    setup->wValue = 0;
-    setup->wIndex = pl2303_class->intf;
-    setup->wLength = 7;
-
-    ret = usbh_control_transfer(pl2303_class->hport, setup, g_pl2303_buf);
-    if (ret < 0) {
-        return ret;
-    }
-    memcpy(line_coding, g_pl2303_buf, sizeof(struct cdc_line_coding));
-    return ret;
-}
-
-int usbh_pl2303_set_line_state(struct usbh_pl2303 *pl2303_class, bool dtr, bool rts)
-{
-    struct usb_setup_packet *setup;
-
-    if (!pl2303_class || !pl2303_class->hport) {
-        return -USB_ERR_INVAL;
-    }
-    setup = pl2303_class->hport->setup;
-
-    setup->bmRequestType = USB_REQUEST_DIR_OUT | USB_REQUEST_CLASS | USB_REQUEST_RECIPIENT_INTERFACE;
-    setup->bRequest = CDC_REQUEST_SET_CONTROL_LINE_STATE;
-    setup->wValue = (dtr << 0) | (rts << 1);
-    setup->wIndex = pl2303_class->intf;
-    setup->wLength = 0;
-
-    return usbh_control_transfer(pl2303_class->hport, setup, NULL);
-}
-
-static int usbh_pl2303_connect(struct usbh_hubport *hport, uint8_t intf)
-{
-    struct usb_endpoint_descriptor *ep_desc;
-    int ret = 0;
-
-    struct usbh_pl2303 *pl2303_class = usbh_pl2303_class_alloc();
-    if (pl2303_class == NULL) {
-        USB_LOG_ERR("Fail to alloc pl2303_class\r\n");
-        return -USB_ERR_NOMEM;
-    }
-
-    pl2303_class->hport = hport;
-    pl2303_class->intf = intf;
-
-    hport->config.intf[intf].priv = pl2303_class;
-
-    do {
-        ret = usbh_pl2303_get_chiptype(pl2303_class);
-        if (ret < 0) {
-            break;
-        }
-
-        /* Startup reset sequence, if necessary for the chip type */
-        if (pl2303_class->chiptype != USBH_PL2303_TYPE_PL2303HXN) {
-            struct usb_setup_packet *setup = pl2303_class->hport->setup;
-
-            setup->bmRequestType = UT_WRITE_VENDOR_DEVICE;
-            setup->bRequest = PL2303_SET_REQUEST;
-            setup->wValue = 0;
-            setup->wIndex = pl2303_class->intf;
-            setup->wLength = 0;
-
-            ret = usbh_control_transfer(pl2303_class->hport, setup, g_pl2303_buf);
-            if (ret < 0) {
-                USB_LOG_WRN("Initialization reset failed: %d\r\n", ret);
-                break;
-            }
-        }
-
-        if (pl2303_class->chiptype == USBH_PL2303_TYPE_PL2303) {
-            /* HX variants seem to lock up after a clear stall request. */
-            /*
-             * The FreeBSD code sets the stall flags on the in and out pipes
-             * here. Have no idea exactly how to do this, or if it is necessary.
-             * May just leave this code unwritten until test hardware is available.
-             */
-        } else if (pl2303_class->chiptype == USBH_PL2303_TYPE_PL2303HX || pl2303_class->chiptype == USBH_PL2303_TYPE_PL2303HXD) {
-            /* Reset upstream data pipes */
-            ret = usbh_pl2303_do(pl2303_class, UT_WRITE_VENDOR_DEVICE, PL2303_SET_REQUEST, 8, 0, 0);
-            if (ret < 0) {
-                USB_LOG_WRN("Could not reset upstream data pipes (8,0): %d\r\n", ret);
-                break;
-            }
-            ret = usbh_pl2303_do(pl2303_class, UT_WRITE_VENDOR_DEVICE, PL2303_SET_REQUEST, 9, 0, 0);
-            if (ret < 0) {
-                USB_LOG_WRN("Could not reset upstream data pipes (9,0): %d\r\n", ret);
-                break;
-            }
-        } else if (pl2303_class->chiptype == USBH_PL2303_TYPE_PL2303HXN) {
-            /* Reset upstream data pipes */
-            ret = usbh_pl2303_do(pl2303_class, UT_WRITE_VENDOR_DEVICE, PL2303_SET_REQUEST_PL2303HXN, 0x07, 0x03, 0);
-            if (ret < 0) {
-                USB_LOG_WRN("Could not reset upstream data pipes (7,3): %d\r\n", ret);
-                break;
-            }
-        }
-
-        /* Final device initialization, if necessary for the chip type */
-        if (pl2303_class->chiptype != USBH_PL2303_TYPE_PL2303HXN) {
-            if (usbh_pl2303_do(pl2303_class, UT_READ_VENDOR_DEVICE, PL2303_SET_REQUEST, 0x8484, 0, 1) < 0 ||
-                usbh_pl2303_do(pl2303_class, UT_WRITE_VENDOR_DEVICE, PL2303_SET_REQUEST, 0x0404, 0, 0) < 0 ||
-                usbh_pl2303_do(pl2303_class, UT_READ_VENDOR_DEVICE, PL2303_SET_REQUEST, 0x8484, 0, 1) < 0 ||
-                usbh_pl2303_do(pl2303_class, UT_READ_VENDOR_DEVICE, PL2303_SET_REQUEST, 0x8383, 0, 1) < 0 ||
-                usbh_pl2303_do(pl2303_class, UT_READ_VENDOR_DEVICE, PL2303_SET_REQUEST, 0x8484, 0, 1) < 0 ||
-                usbh_pl2303_do(pl2303_class, UT_WRITE_VENDOR_DEVICE, PL2303_SET_REQUEST, 0x0404, 1, 0) < 0 ||
-                usbh_pl2303_do(pl2303_class, UT_READ_VENDOR_DEVICE, PL2303_SET_REQUEST, 0x8484, 0, 1) < 0 ||
-                usbh_pl2303_do(pl2303_class, UT_READ_VENDOR_DEVICE, PL2303_SET_REQUEST, 0x8383, 0, 1) < 0 ||
-                usbh_pl2303_do(pl2303_class, UT_WRITE_VENDOR_DEVICE, PL2303_SET_REQUEST, 0, 1, 0) < 0 ||
-                usbh_pl2303_do(pl2303_class, UT_WRITE_VENDOR_DEVICE, PL2303_SET_REQUEST, 1, 0, 0) < 0) {
-                USB_LOG_WRN("Could not complete init sequence\r\n");
-                ret = -USB_ERR_INVAL;
-                break;
-            }
-
-            if (pl2303_class->chiptype != USBH_PL2303_TYPE_PL2303) {
-                ret = usbh_pl2303_do(pl2303_class, UT_WRITE_VENDOR_DEVICE, PL2303_SET_REQUEST, 2, 0x44, 0);
-            } else {
-                ret = usbh_pl2303_do(pl2303_class, UT_WRITE_VENDOR_DEVICE, PL2303_SET_REQUEST, 2, 0x24, 0);
-            }
-            if (ret < 0) {
-                USB_LOG_WRN("Could not complete final init request: %d\r\n", ret);
-                break;
-            }
-        }
-    } while (0);
-
-    if (ret < 0) {
-        USB_LOG_ERR("Failed to initialize PL2303 device: %d\r\n", ret);
-        return ret;
-    }
-
-    for (uint8_t i = 0; i < hport->config.intf[intf].altsetting[0].intf_desc.bNumEndpoints; i++) {
-        ep_desc = &hport->config.intf[intf].altsetting[0].ep[i].ep_desc;
-        if (USB_GET_ENDPOINT_TYPE(ep_desc->bmAttributes) == USB_ENDPOINT_TYPE_INTERRUPT) {
-            continue;
-        } else {
-            if (ep_desc->bEndpointAddress & 0x80) {
-                USBH_EP_INIT(pl2303_class->bulkin, ep_desc);
-            } else {
-                USBH_EP_INIT(pl2303_class->bulkout, ep_desc);
-            }
-        }
-    }
-
-    snprintf(hport->config.intf[intf].devname, CONFIG_USBHOST_DEV_NAMELEN, DEV_FORMAT, pl2303_class->minor);
-
-    USB_LOG_INFO("Register PL2303 Class:%s\r\n", hport->config.intf[intf].devname);
-
-#if 0
-    USB_LOG_INFO("Test pl2303 rx and tx and rx for 5 times, baudrate is 115200\r\n");
-
-    struct cdc_line_coding linecoding;
-    uint8_t count = 5;
-
-    linecoding.dwDTERate = 115200;
-    linecoding.bDataBits = 8;
-    linecoding.bParityType = 0;
-    linecoding.bCharFormat = 0;
-    usbh_pl2303_set_line_coding(pl2303_class, &linecoding);
-    usbh_pl2303_set_line_state(pl2303_class, true, false);
-
-    memset(g_pl2303_buf, 'a', sizeof(g_pl2303_buf));
-    ret = usbh_pl2303_bulk_out_transfer(pl2303_class, g_pl2303_buf, sizeof(g_pl2303_buf), 0xfffffff);
-    USB_LOG_RAW("out ret:%d\r\n", ret);
-    while (count--) {
-        ret = usbh_pl2303_bulk_in_transfer(pl2303_class, g_pl2303_buf, sizeof(g_pl2303_buf), 0xfffffff);
-        USB_LOG_RAW("in ret:%d\r\n", ret);
-        if (ret > 0) {
-            for (uint32_t i = 0; i < ret; i++) {
-                USB_LOG_RAW("%02x ", g_pl2303_buf[i]);
-            }
-        }
-        USB_LOG_RAW("\r\n");
-    }
-#endif
-
-    usbh_pl2303_run(pl2303_class);
-    return ret;
-}
-
-static int usbh_pl2303_disconnect(struct usbh_hubport *hport, uint8_t intf)
-{
-    int ret = 0;
-
-    struct usbh_pl2303 *pl2303_class = (struct usbh_pl2303 *)hport->config.intf[intf].priv;
-
-    if (pl2303_class) {
-        if (pl2303_class->bulkin) {
-            usbh_kill_urb(&pl2303_class->bulkin_urb);
-        }
-
-        if (pl2303_class->bulkout) {
-            usbh_kill_urb(&pl2303_class->bulkout_urb);
-        }
-
-        if (hport->config.intf[intf].devname[0] != '\0') {
-            usb_osal_thread_schedule_other();
-            USB_LOG_INFO("Unregister PL2303 Class:%s\r\n", hport->config.intf[intf].devname);
-            usbh_pl2303_stop(pl2303_class);
-        }
-
-        usbh_pl2303_class_free(pl2303_class);
-    }
-
-    return ret;
-}
-
-int usbh_pl2303_bulk_in_transfer(struct usbh_pl2303 *pl2303_class, uint8_t *buffer, uint32_t buflen, uint32_t timeout)
-{
-    int ret;
-    struct usbh_urb *urb = &pl2303_class->bulkin_urb;
-
-    usbh_bulk_urb_fill(urb, pl2303_class->hport, pl2303_class->bulkin, buffer, buflen, timeout, NULL, NULL);
-    ret = usbh_submit_urb(urb);
-    if (ret == 0) {
-        ret = urb->actual_length;
-    }
-    return ret;
-}
-
-int usbh_pl2303_bulk_out_transfer(struct usbh_pl2303 *pl2303_class, uint8_t *buffer, uint32_t buflen, uint32_t timeout)
-{
-    int ret;
-    struct usbh_urb *urb = &pl2303_class->bulkout_urb;
-
-    usbh_bulk_urb_fill(urb, pl2303_class->hport, pl2303_class->bulkout, buffer, buflen, timeout, NULL, NULL);
-    ret = usbh_submit_urb(urb);
-    if (ret == 0) {
-        ret = urb->actual_length;
-    }
-    return ret;
-}
-
-__WEAK void usbh_pl2303_run(struct usbh_pl2303 *pl2303_class)
-{
-    (void)pl2303_class;
-}
-
-__WEAK void usbh_pl2303_stop(struct usbh_pl2303 *pl2303_class)
-{
-    (void)pl2303_class;
-}
-
-static const uint16_t pl2303_id_table[][2] = {
-    { 0x067B, 0x2303 }, // PL2303 Serial (ATEN/IOGEAR UC232A)
-    { 0x067B, 0x23A3 }, // PL2303HXN Serial, type GC
-    { 0x067B, 0x23B3 }, // PL2303HXN Serial, type GB
-    { 0x067B, 0x23C3 }, // PL2303HXN Serial, type GT
-    { 0x067B, 0x23D3 }, // PL2303HXN Serial, type GL
-    { 0x067B, 0x23E3 }, // PL2303HXN Serial, type GE
-    { 0x067B, 0x23F3 }, // PL2303HXN Serial, type GS
-    { 0, 0 },
-};
-
-const struct usbh_class_driver pl2303_class_driver = {
-    .driver_name = "pl2303",
-    .connect = usbh_pl2303_connect,
-    .disconnect = usbh_pl2303_disconnect
-};
-
-CLASS_INFO_DEFINE const struct usbh_class_info pl2303_class_info = {
-    .match_flags = USB_CLASS_MATCH_VID_PID | USB_CLASS_MATCH_INTF_CLASS,
-    .bInterfaceClass = 0xff,
-    .bInterfaceSubClass = 0x00,
-    .bInterfaceProtocol = 0x00,
-    .id_table = pl2303_id_table,
-    .class_driver = &pl2303_class_driver
-};
--- a/class/vendor/serial/usbh_pl2303.h
+++ b/class/vendor/serial/usbh_pl2303.h
@@ -1,62 +0,0 @@
-/*
- * Copyright (c) 2024, sakumisu
- *
- * SPDX-License-Identifier: Apache-2.0
- */
-#ifndef USBH_PL2303_H
-#define USBH_PL2303_H
-
-#include "usb_cdc.h"
-
-#define PL2303_SET_REQUEST             0x01
-#define PL2303_SET_REQUEST_PL2303HXN   0x80
-#define PL2303_SET_CRTSCTS             0x41
-#define PL2303_SET_CRTSCTS_PL2303X     0x61
-#define PL2303_SET_CRTSCTS_PL2303HXN   0xFA
-#define PL2303_CLEAR_CRTSCTS_PL2303HXN 0xFF
-#define PL2303_CRTSCTS_REG_PL2303HXN   0x0A
-#define PL2303_STATUS_REG_PL2303HX     0x8080
-
-/* Different PL2303 IC types */
-#define USBH_PL2303_TYPE_UNKNOWN   0
-#define USBH_PL2303_TYPE_PL2303    1
-#define USBH_PL2303_TYPE_PL2303HX  2
-#define USBH_PL2303_TYPE_PL2303HXD 3
-#define USBH_PL2303_TYPE_PL2303HXN 4
-
-struct usbh_pl2303 {
-    struct usbh_hubport *hport;
-    struct usb_endpoint_descriptor *bulkin;  /* Bulk IN endpoint */
-    struct usb_endpoint_descriptor *bulkout; /* Bulk OUT endpoint */
-
-    struct usbh_urb bulkout_urb;
-    struct usbh_urb bulkin_urb;
-
-    struct cdc_line_coding linecoding;
-
-    uint8_t intf;
-    uint8_t minor;
-    uint8_t chiptype;
-
-    void *user_data;
-};
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-int usbh_pl2303_set_line_coding(struct usbh_pl2303 *pl2303_class, struct cdc_line_coding *line_coding);
-int usbh_pl2303_get_line_coding(struct usbh_pl2303 *pl2303_class, struct cdc_line_coding *line_coding);
-int usbh_pl2303_set_line_state(struct usbh_pl2303 *pl2303_class, bool dtr, bool rts);
-
-int usbh_pl2303_bulk_in_transfer(struct usbh_pl2303 *pl2303_class, uint8_t *buffer, uint32_t buflen, uint32_t timeout);
-int usbh_pl2303_bulk_out_transfer(struct usbh_pl2303 *pl2303_class, uint8_t *buffer, uint32_t buflen, uint32_t timeout);
-
-void usbh_pl2303_run(struct usbh_pl2303 *pl2303_class);
-void usbh_pl2303_stop(struct usbh_pl2303 *pl2303_class);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* USBH_PL2303_H */
--- a/common/usb_def.h
+++ b/common/usb_def.h
@@ -318,24 +318,24 @@
 /* Setup packet definition used to read raw data from USB line */
 struct usb_setup_packet {
    /** Request type. Bits 0:4 determine recipient, see
-	 * \ref usb_request_recipient. Bits 5:6 determine type, see
-	 * \ref usb_request_type. Bit 7 determines data transfer direction, see
-	 * \ref usb_endpoint_direction.
-	 */
+     * \ref usb_request_recipient. Bits 5:6 determine type, see
+     * \ref usb_request_type. Bit 7 determines data transfer direction, see
+     * \ref usb_endpoint_direction.
+     */
    uint8_t bmRequestType;

    /** Request. If the type bits of bmRequestType are equal to
-	 * \ref usb_request_type::LIBUSB_REQUEST_TYPE_STANDARD
-	 * "USB_REQUEST_TYPE_STANDARD" then this field refers to
-	 * \ref usb_standard_request. For other cases, use of this field is
-	 * application-specific. */
+     * \ref usb_request_type::LIBUSB_REQUEST_TYPE_STANDARD
+     * "USB_REQUEST_TYPE_STANDARD" then this field refers to
+     * \ref usb_standard_request. For other cases, use of this field is
+     * application-specific. */
    uint8_t bRequest;

    /** Value. Varies according to request */
    uint16_t wValue;

    /** Index. Varies according to request, typically used to pass an index
-	 * or offset */
+     * or offset */
    uint16_t wIndex;

    /** Number of bytes to transfer */
--- a/common/usb_util.h
+++ b/common/usb_util.h
@@ -209,6 +209,23 @@
        19, 18, 17, 16, 15, 14, 13, 12, 11, 10, \
        9, 8, 7, 6, 5, 4, 3, 2, 1, 0

+/*
+ * Divide positive or negative dividend by positive or negative divisor
+ * and round to closest integer. Result is undefined for negative
+ * divisors if the dividend variable type is unsigned and for negative
+ * dividends if the divisor variable type is unsigned.
+ */
+#define DIV_ROUND_CLOSEST(x, divisor) (       \
+    {                                         \
+        typeof(x) __x = x;                    \
+        typeof(divisor) __d = divisor;        \
+        (((typeof(x))-1) > 0 ||               \
+         ((typeof(divisor))-1) > 0 ||         \
+         (((__x) > 0) == ((__d) > 0))) ?      \
+            (((__x) + ((__d) / 2)) / (__d)) : \
+            (((__x) - ((__d) / 2)) / (__d));  \
+    })
+
 #define USB_MEM_ALIGNX __attribute__((aligned(CONFIG_USB_ALIGN_SIZE)))

 #define USB_ALIGN_UP(size, align) (((size) + (align)-1) & ~((align)-1))
--- a/common/usb_version.h
+++ b/common/usb_version.h
@@ -15,7 +15,7 @@
 #undef CHERRYUSB_VERSION_STR
 #endif

-#define CHERRYUSB_VERSION     0x010503
-#define CHERRYUSB_VERSION_STR "v1.5.3.99"
+#define CHERRYUSB_VERSION     0x010600
+#define CHERRYUSB_VERSION_STR "v1.6.0"

 #endif
--- a/core/usbd_core.c
+++ b/core/usbd_core.c
@@ -48,16 +48,10 @@ USB_NOCACHE_RAM_SECTION struct usbd_core_priv {
    uint32_t ep0_data_buf_len;
    /** Zero length packet flag of control transfer */
    bool zlp_flag;
+
    /** Pointer to registered descriptors */
-#ifdef CONFIG_USBDEV_ADVANCE_DESC
    const struct usb_descriptor *descriptors;
-#else
-    const uint8_t *descriptors;
-    struct usb_msosv1_descriptor *msosv1_desc;
-    struct usb_msosv2_descriptor *msosv2_desc;
-    struct usb_bos_descriptor *bos_desc;
-    struct usb_webusb_descriptor *webusb_url_desc;
-#endif
+
    /* Buffer used for storing standard, class and vendor request data */
    USB_MEM_ALIGNX uint8_t req_data[USB_ALIGN_UP(CONFIG_USBDEV_REQUEST_BUFFER_LEN, CONFIG_USB_ALIGN_SIZE)];

@@ -69,9 +63,7 @@ USB_NOCACHE_RAM_SECTION struct usbd_core_priv {
    bool remote_wakeup_support;
    bool remote_wakeup_enabled;
    bool is_suspend;
-#ifdef CONFIG_USBDEV_ADVANCE_DESC
    uint8_t speed;
-#endif
 #ifdef CONFIG_USBDEV_TEST_MODE
    bool test_req;
 #endif
@@ -180,7 +172,6 @@ static bool usbd_reset_endpoint(uint8_t busid, const struct usb_endpoint_descrip
 *
 * @return true if the descriptor was found, false otherwise
 */
-#ifdef CONFIG_USBDEV_ADVANCE_DESC
 static bool usbd_get_descriptor(uint8_t busid, uint16_t type_index, uint8_t **data, uint32_t *len)
 {
    uint8_t type = 0U;
@@ -326,93 +317,6 @@ static bool usbd_get_descriptor(uint8_t busid, uint16_t type_index, uint8_t **da
    }
    return found;
 }
-#else
-static bool usbd_get_descriptor(uint8_t busid, uint16_t type_index, uint8_t **data, uint32_t *len)
-{
-    uint8_t type = 0U;
-    uint8_t index = 0U;
-    uint8_t *p = NULL;
-    uint32_t cur_index = 0U;
-    bool found = false;
-
-    type = HI_BYTE(type_index);
-    index = LO_BYTE(type_index);
-
-    if ((type == USB_DESCRIPTOR_TYPE_STRING) && (index == USB_OSDESC_STRING_DESC_INDEX)) {
-        if (!g_usbd_core[busid].msosv1_desc) {
-            return false;
-        }
-
-        *data = (uint8_t *)g_usbd_core[busid].msosv1_desc->string;
-        //memcpy(*data, (uint8_t *)g_usbd_core[busid].msosv1_desc->string, g_usbd_core[busid].msosv1_desc->string[0]);
-        *len = g_usbd_core[busid].msosv1_desc->string[0];
-
-        return true;
-    } else if (type == USB_DESCRIPTOR_TYPE_BINARY_OBJECT_STORE) {
-        if (!g_usbd_core[busid].bos_desc) {
-            return false;
-        }
-
-        *data = (uint8_t *)g_usbd_core[busid].bos_desc->string;
-        //memcpy(*data, (uint8_t *)g_usbd_core[busid].bos_desc->string, g_usbd_core[busid].bos_desc->string_len);
-        *len = g_usbd_core[busid].bos_desc->string_len;
-        return true;
-    }
-    /*
-     * Invalid types of descriptors,
-     * see USB Spec. Revision 2.0, 9.4.3 Get Descriptor
-     */
-    else if ((type == USB_DESCRIPTOR_TYPE_INTERFACE) || (type == USB_DESCRIPTOR_TYPE_ENDPOINT) ||
-#ifndef CONFIG_USB_HS
-             (type > USB_DESCRIPTOR_TYPE_ENDPOINT)) {
-#else
-             (type > USB_DESCRIPTOR_TYPE_OTHER_SPEED)) {
-#endif
-        return false;
-    }
-
-    p = (uint8_t *)g_usbd_core[busid].descriptors;
-
-    cur_index = 0U;
-
-    while (p[DESC_bLength] != 0U) {
-        if (p[DESC_bDescriptorType] == type) {
-            if (cur_index == index) {
-                found = true;
-                break;
-            }
-
-            cur_index++;
-        }
-
-        /* skip to next descriptor */
-        p += p[DESC_bLength];
-    }
-
-    if (found) {
-        if ((type == USB_DESCRIPTOR_TYPE_CONFIGURATION) || ((type == USB_DESCRIPTOR_TYPE_OTHER_SPEED))) {
-            /* configuration or other speed descriptor is an
-             * exception, length is at offset 2 and 3
-             */
-            *len = (p[CONF_DESC_wTotalLength]) |
-                   (p[CONF_DESC_wTotalLength + 1] << 8);
-
-            g_usbd_core[busid].self_powered = (p[7] & USB_CONFIG_POWERED_MASK) ? true : false;
-            g_usbd_core[busid].remote_wakeup_support = (p[7] & USB_CONFIG_REMOTE_WAKEUP) ? true : false;
-        } else {
-            /* normally length is at offset 0 */
-            *len = p[DESC_bLength];
-        }
-        *data = p;
-        //memcpy(*data, p, *len);
-    } else {
-        /* nothing found */
-        USB_LOG_ERR("descriptor <type:0x%02x,index:0x%02x> not found!\r\n", type, index);
-    }
-
-    return found;
-}
-#endif

 /**
 * @brief set USB configuration
@@ -436,11 +340,8 @@ static bool usbd_set_configuration(uint8_t busid, uint8_t config_index, uint8_t
    uint32_t desc_len = 0;
    uint32_t current_desc_len = 0;

-#ifdef CONFIG_USBDEV_ADVANCE_DESC
    p = g_usbd_core[busid].descriptors->config_descriptor_callback(g_usbd_core[busid].speed);
-#else
-    p = (uint8_t *)g_usbd_core[busid].descriptors;
-#endif
+
    /* configure endpoints for this configuration/altsetting */
    while (p[DESC_bLength] != 0U) {
        switch (p[DESC_bDescriptorType]) {
@@ -508,11 +409,8 @@ static bool usbd_set_interface(uint8_t busid, uint8_t iface, uint8_t alt_setting
    uint32_t desc_len = 0;
    uint32_t current_desc_len = 0;

-#ifdef CONFIG_USBDEV_ADVANCE_DESC
    p = g_usbd_core[busid].descriptors->config_descriptor_callback(g_usbd_core[busid].speed);
-#else
-    p = (uint8_t *)g_usbd_core[busid].descriptors;
-#endif
+
    USB_LOG_DBG("iface %u alt_setting %u\r\n", iface, alt_setting);

    while (p[DESC_bLength] != 0U) {
@@ -683,11 +581,7 @@ static bool usbd_std_interface_req_handler(uint8_t busid, struct usb_setup_packe
    uint32_t current_desc_len = 0;
    uint8_t cur_iface = 0xFF;

-#ifdef CONFIG_USBDEV_ADVANCE_DESC
    p = g_usbd_core[busid].descriptors->config_descriptor_callback(g_usbd_core[busid].speed);
-#else
-    p = (uint8_t *)g_usbd_core[busid].descriptors;
-#endif

    /* Only when device is configured, then interface requests can be valid. */
    if (!is_device_configured(busid)) {
@@ -925,7 +819,7 @@ static int usbd_class_request_handler(uint8_t busid, struct usb_setup_packet *se
 static int usbd_vendor_request_handler(uint8_t busid, struct usb_setup_packet *setup, uint8_t **data, uint32_t *len)
 {
    uint32_t desclen;
-#ifdef CONFIG_USBDEV_ADVANCE_DESC
+
    if (g_usbd_core[busid].descriptors->msosv1_descriptor) {
        if (setup->bRequest == g_usbd_core[busid].descriptors->msosv1_descriptor->vendor_code) {
            switch (setup->wIndex) {
@@ -982,61 +876,7 @@ static int usbd_vendor_request_handler(uint8_t busid, struct usb_setup_packet *s
            }
        }
    }
-#else
-    if (g_usbd_core[busid].msosv1_desc) {
-        if (setup->bRequest == g_usbd_core[busid].msosv1_desc->vendor_code) {
-            switch (setup->wIndex) {
-                case 0x04:
-                    *data = (uint8_t *)g_usbd_core[busid].msosv1_desc->compat_id;
-                    desclen = g_usbd_core[busid].msosv1_desc->compat_id[0] +
-                              (g_usbd_core[busid].msosv1_desc->compat_id[1] << 8) +
-                              (g_usbd_core[busid].msosv1_desc->compat_id[2] << 16) +
-                              (g_usbd_core[busid].msosv1_desc->compat_id[3] << 24);
-                    //memcpy(*data, g_usbd_core[busid].msosv1_desc->compat_id, desclen);
-                    *len = desclen;
-                    return 0;
-                case 0x05:
-                    *data = (uint8_t *)g_usbd_core[busid].msosv1_desc->comp_id_property[setup->wValue];
-                    desclen = g_usbd_core[busid].msosv1_desc->comp_id_property[setup->wValue][0] +
-                              (g_usbd_core[busid].msosv1_desc->comp_id_property[setup->wValue][1] << 8) +
-                              (g_usbd_core[busid].msosv1_desc->comp_id_property[setup->wValue][2] << 16) +
-                              (g_usbd_core[busid].msosv1_desc->comp_id_property[setup->wValue][3] << 24);
-                    //memcpy(*data, g_usbd_core[busid].msosv1_desc->comp_id_property[setup->wValue], desclen);
-                    *len = desclen;
-                    return 0;
-                default:
-                    return -1;
-            }
-        }
-    } else if (g_usbd_core[busid].msosv2_desc) {
-        if (setup->bRequest == g_usbd_core[busid].msosv2_desc->vendor_code) {
-            switch (setup->wIndex) {
-                case WINUSB_REQUEST_GET_DESCRIPTOR_SET:
-                    *data = (uint8_t *)g_usbd_core[busid].msosv2_desc->compat_id;
-                    //memcpy(*data, g_usbd_core[busid].msosv2_desc->compat_id, g_usbd_core[busid].msosv2_desc->compat_id_len);
-                    *len = g_usbd_core[busid].msosv2_desc->compat_id_len;
-                    return 0;
-                default:
-                    return -1;
-            }
-        }
-    }

-    if (g_usbd_core[busid].webusb_url_desc) {
-        if (setup->bRequest == g_usbd_core[busid].webusb_url_desc->vendor_code) {
-            switch (setup->wIndex) {
-                case WEBUSB_REQUEST_GET_URL:
-                    desclen = g_usbd_core[busid].webusb_url_desc->string_len;
-                    *data = (uint8_t *)g_usbd_core[busid].webusb_url_desc->string;
-                    //memcpy(*data, g_usbd_core[busid].webusb_url_desc->string, desclen);
-                    *len = desclen;
-                    return 0;
-                default:
-                    return -1;
-            }
-        }
-    }
-#endif
    for (uint8_t i = 0; i < g_usbd_core[busid].intf_offset; i++) {
        struct usbd_interface *intf = g_usbd_core[busid].intf[i];

@@ -1151,7 +991,6 @@ void usbd_event_reset_handler(uint8_t busid)
    g_usbd_core[busid].device_address = 0;
    g_usbd_core[busid].configuration = 0;
    g_usbd_core[busid].ep0_next_state = USBD_EP0_STATE_SETUP;
-#ifdef CONFIG_USBDEV_ADVANCE_DESC
    g_usbd_core[busid].speed = USB_SPEED_UNKNOWN;

    USB_ASSERT_MSG(g_usbd_core[busid].descriptors->device_descriptor_callback != NULL,
@@ -1159,9 +998,6 @@ void usbd_event_reset_handler(uint8_t busid)

    struct usb_device_descriptor *device_desc = (struct usb_device_descriptor *)g_usbd_core[busid].descriptors->device_descriptor_callback(g_usbd_core[busid].speed);
    ep0.wMaxPacketSize = device_desc->bMaxPacketSize0;
-#else
-    ep0.wMaxPacketSize = USB_CTRL_EP_MPS;
-#endif

    ep0.bLength = 7;
    ep0.bDescriptorType = USB_DESCRIPTOR_TYPE_ENDPOINT;
@@ -1377,7 +1213,6 @@ void usbd_event_ep_out_complete_handler(uint8_t busid, uint8_t ep, uint32_t nbyt
    }
 }

-#ifdef CONFIG_USBDEV_ADVANCE_DESC
 void usbd_desc_register(uint8_t busid, const struct usb_descriptor *desc)
 {
    memset(&g_usbd_core[busid], 0, sizeof(struct usbd_core_priv));
@@ -1390,42 +1225,6 @@ void usbd_desc_register(uint8_t busid, const struct usb_descriptor *desc)
    g_usbd_core[busid].rx_msg[0].ep = 0x00;
    g_usbd_core[busid].rx_msg[0].cb = usbd_event_ep0_out_complete_handler;
 }
-#else
-void usbd_desc_register(uint8_t busid, const uint8_t *desc)
-{
-    memset(&g_usbd_core[busid], 0, sizeof(struct usbd_core_priv));
-
-    g_usbd_core[busid].descriptors = desc;
-    g_usbd_core[busid].intf_offset = 0;
-
-    g_usbd_core[busid].tx_msg[0].ep = 0x80;
-    g_usbd_core[busid].tx_msg[0].cb = usbd_event_ep0_in_complete_handler;
-    g_usbd_core[busid].rx_msg[0].ep = 0x00;
-    g_usbd_core[busid].rx_msg[0].cb = usbd_event_ep0_out_complete_handler;
-}
-
-/* Register MS OS Descriptors version 1 */
-void usbd_msosv1_desc_register(uint8_t busid, struct usb_msosv1_descriptor *desc)
-{
-    g_usbd_core[busid].msosv1_desc = desc;
-}
-
-/* Register MS OS Descriptors version 2 */
-void usbd_msosv2_desc_register(uint8_t busid, struct usb_msosv2_descriptor *desc)
-{
-    g_usbd_core[busid].msosv2_desc = desc;
-}
-
-void usbd_bos_desc_register(uint8_t busid, struct usb_bos_descriptor *desc)
-{
-    g_usbd_core[busid].bos_desc = desc;
-}
-
-void usbd_webusb_desc_register(uint8_t busid, struct usb_webusb_descriptor *desc)
-{
-    g_usbd_core[busid].webusb_url_desc = desc;
-}
-#endif

 void usbd_add_interface(uint8_t busid, struct usbd_interface *intf)
 {
--- a/core/usbd_core.h
+++ b/core/usbd_core.h
@@ -96,15 +96,7 @@ extern struct usbd_bus g_usbdev_bus[];
 #error USBD_IRQHandler is obsolete, please call USBD_IRQHandler(xxx) in your irq
 #endif

-#ifdef CONFIG_USBDEV_ADVANCE_DESC
 void usbd_desc_register(uint8_t busid, const struct usb_descriptor *desc);
-#else
-void usbd_desc_register(uint8_t busid, const uint8_t *desc);
-void usbd_msosv1_desc_register(uint8_t busid, struct usb_msosv1_descriptor *desc);
-void usbd_msosv2_desc_register(uint8_t busid, struct usb_msosv2_descriptor *desc);
-void usbd_bos_desc_register(uint8_t busid, struct usb_bos_descriptor *desc);
-void usbd_webusb_desc_register(uint8_t busid, struct usb_webusb_descriptor *desc);
-#endif

 void usbd_add_interface(uint8_t busid, struct usbd_interface *intf);
 void usbd_add_endpoint(uint8_t busid, struct usbd_endpoint *ep);
--- a/core/usbh_core.c
+++ b/core/usbh_core.c
@@ -31,6 +31,15 @@ struct usbh_bus g_usbhost_bus[CONFIG_USBHOST_MAX_BUS];
 #define USB_DEV_ADDR_MARK_OFFSET 5
 #define USB_DEV_ADDR_MARK_MASK   0x1f

+static void dummy_event_handler(uint8_t busid, uint8_t hub_index, uint8_t hub_port, uint8_t intf, uint8_t event)
+{
+    (void)busid;
+    (void)hub_index;
+    (void)hub_port;
+    (void)intf;
+    (void)event;
+}
+
 static int usbh_allocate_devaddr(struct usbh_devaddr_map *devgen)
 {
    uint8_t lastaddr = devgen->last;
@@ -542,6 +551,7 @@ int usbh_enumerate(struct usbh_hubport *hport)
    }
 #endif
    USB_LOG_INFO("Enumeration success, start loading class driver\r\n");
+    hport->bus->event_handler(hport->bus->busid, hport->parent->index, hport->port, USB_INTERFACE_ANY, USBH_EVENT_DEVICE_CONFIGURED);
    /*search supported class driver*/
    for (uint8_t i = 0; i < hport->config.config_desc.bNumInterfaces; i++) {
        intf_desc = &hport->config.intf[i].altsetting[0].intf_desc;
@@ -561,11 +571,15 @@ int usbh_enumerate(struct usbh_hubport *hport)
                        intf_desc->bInterfaceSubClass,
                        intf_desc->bInterfaceProtocol,
                        i);
+            hport->bus->event_handler(hport->bus->busid, hport->parent->index, hport->port, i, USBH_EVENT_INTERFACE_UNSUPPORTED);
            continue;
        }
        hport->config.intf[i].class_driver = class_driver;
        USB_LOG_INFO("Loading %s class driver on interface %u\r\n", class_driver->driver_name, i);
        ret = CLASS_CONNECT(hport, i);
+        if (ret >= 0) {
+            hport->bus->event_handler(hport->bus->busid, hport->parent->index, hport->port, i, USBH_EVENT_INTERFACE_START);
+        }
    }

 errout:
@@ -586,11 +600,14 @@ void usbh_hubport_release(struct usbh_hubport *hport)
            if (hport->config.intf[i].class_driver && hport->config.intf[i].class_driver->disconnect) {
                CLASS_DISCONNECT(hport, i);
            }
+            hport->bus->event_handler(hport->bus->busid, hport->parent->index, hport->port, i, USBH_EVENT_INTERFACE_STOP);
        }
        hport->config.config_desc.bNumInterfaces = 0;
        if (hport->mutex) {
            usb_osal_mutex_delete(hport->mutex);
        }
+        USB_LOG_INFO("Device on Bus %u, Hub %u, Port %u disconnected\r\n", hport->bus->busid, hport->parent->index, hport->port);
+        hport->bus->event_handler(hport->bus->busid, hport->parent->index, hport->port, USB_INTERFACE_ANY, USBH_EVENT_DEVICE_DISCONNECTED);
    }
 }

@@ -607,7 +624,7 @@ static void usbh_bus_init(struct usbh_bus *bus, uint8_t busid, uintptr_t reg_bas
    usb_slist_add_tail(&g_bus_head, &bus->list);
 }

-int usbh_initialize(uint8_t busid, uintptr_t reg_base)
+int usbh_initialize(uint8_t busid, uintptr_t reg_base, usbh_event_handler_t event_handler)
 {
    struct usbh_bus *bus;

@@ -617,6 +634,12 @@ int usbh_initialize(uint8_t busid, uintptr_t reg_base)

    usbh_bus_init(bus, busid, reg_base);

+    if (event_handler) {
+        bus->event_handler = event_handler;
+    } else {
+        bus->event_handler = dummy_event_handler;
+    }
+
 #ifdef __ARMCC_VERSION /* ARM C Compiler */
    extern const int usbh_class_info$$Base;
    extern const int usbh_class_info$$Limit;
@@ -643,6 +666,8 @@ int usbh_deinitialize(uint8_t busid)

    bus = &g_usbhost_bus[busid];

+    bus->event_handler(bus->busid, USB_HUB_INDEX_ANY, USB_HUB_PORT_ANY, USB_INTERFACE_ANY, USBH_EVENT_DEINIT);
+
    usbh_hub_deinitialize(bus);

    usb_slist_remove(&g_bus_head, &bus->list);
@@ -848,52 +873,52 @@ struct usbh_hubport *usbh_find_hubport(uint8_t busid, uint8_t hub_index, uint8_t
 static void usbh_print_hubport_info(struct usbh_hubport *hport)
 {
    USB_LOG_RAW("Device Descriptor:\r\n");
-    USB_LOG_RAW("bLength: 0x%02x           \r\n", hport->device_desc.bLength);
-    USB_LOG_RAW("bDescriptorType: 0x%02x   \r\n", hport->device_desc.bDescriptorType);
-    USB_LOG_RAW("bcdUSB: 0x%04x            \r\n", hport->device_desc.bcdUSB);
-    USB_LOG_RAW("bDeviceClass: 0x%02x      \r\n", hport->device_desc.bDeviceClass);
-    USB_LOG_RAW("bDeviceSubClass: 0x%02x   \r\n", hport->device_desc.bDeviceSubClass);
-    USB_LOG_RAW("bDeviceProtocol: 0x%02x   \r\n", hport->device_desc.bDeviceProtocol);
-    USB_LOG_RAW("bMaxPacketSize0: 0x%02x   \r\n", hport->device_desc.bMaxPacketSize0);
-    USB_LOG_RAW("idVendor: 0x%04x          \r\n", hport->device_desc.idVendor);
-    USB_LOG_RAW("idProduct: 0x%04x         \r\n", hport->device_desc.idProduct);
-    USB_LOG_RAW("bcdDevice: 0x%04x         \r\n", hport->device_desc.bcdDevice);
-    USB_LOG_RAW("iManufacturer: 0x%02x     \r\n", hport->device_desc.iManufacturer);
-    USB_LOG_RAW("iProduct: 0x%02x          \r\n", hport->device_desc.iProduct);
-    USB_LOG_RAW("iSerialNumber: 0x%02x     \r\n", hport->device_desc.iSerialNumber);
-    USB_LOG_RAW("bNumConfigurations: 0x%02x\r\n", hport->device_desc.bNumConfigurations);
+    USB_LOG_RAW("  bLength: 0x%02x           \r\n", hport->device_desc.bLength);
+    USB_LOG_RAW("  bDescriptorType: 0x%02x   \r\n", hport->device_desc.bDescriptorType);
+    USB_LOG_RAW("  bcdUSB: 0x%04x            \r\n", hport->device_desc.bcdUSB);
+    USB_LOG_RAW("  bDeviceClass: 0x%02x      \r\n", hport->device_desc.bDeviceClass);
+    USB_LOG_RAW("  bDeviceSubClass: 0x%02x   \r\n", hport->device_desc.bDeviceSubClass);
+    USB_LOG_RAW("  bDeviceProtocol: 0x%02x   \r\n", hport->device_desc.bDeviceProtocol);
+    USB_LOG_RAW("  bMaxPacketSize0: 0x%02x   \r\n", hport->device_desc.bMaxPacketSize0);
+    USB_LOG_RAW("  idVendor: 0x%04x          \r\n", hport->device_desc.idVendor);
+    USB_LOG_RAW("  idProduct: 0x%04x         \r\n", hport->device_desc.idProduct);
+    USB_LOG_RAW("  bcdDevice: 0x%04x         \r\n", hport->device_desc.bcdDevice);
+    USB_LOG_RAW("  iManufacturer: 0x%02x     \r\n", hport->device_desc.iManufacturer);
+    USB_LOG_RAW("  iProduct: 0x%02x          \r\n", hport->device_desc.iProduct);
+    USB_LOG_RAW("  iSerialNumber: 0x%02x     \r\n", hport->device_desc.iSerialNumber);
+    USB_LOG_RAW("  bNumConfigurations: 0x%02x\r\n", hport->device_desc.bNumConfigurations);

-    USB_LOG_RAW("Config Descriptor:\r\n");
-    USB_LOG_RAW("bLength: 0x%02x             \r\n", hport->config.config_desc.bLength);
-    USB_LOG_RAW("bDescriptorType: 0x%02x     \r\n", hport->config.config_desc.bDescriptorType);
-    USB_LOG_RAW("wTotalLength: 0x%04x        \r\n", hport->config.config_desc.wTotalLength);
-    USB_LOG_RAW("bNumInterfaces: 0x%02x      \r\n", hport->config.config_desc.bNumInterfaces);
-    USB_LOG_RAW("bConfigurationValue: 0x%02x \r\n", hport->config.config_desc.bConfigurationValue);
-    USB_LOG_RAW("iConfiguration: 0x%02x      \r\n", hport->config.config_desc.iConfiguration);
-    USB_LOG_RAW("bmAttributes: 0x%02x        \r\n", hport->config.config_desc.bmAttributes);
-    USB_LOG_RAW("bMaxPower: 0x%02x           \r\n", hport->config.config_desc.bMaxPower);
+    USB_LOG_RAW("  Config Descriptor:\r\n");
+    USB_LOG_RAW("    bLength: 0x%02x             \r\n", hport->config.config_desc.bLength);
+    USB_LOG_RAW("    bDescriptorType: 0x%02x     \r\n", hport->config.config_desc.bDescriptorType);
+    USB_LOG_RAW("    wTotalLength: 0x%04x        \r\n", hport->config.config_desc.wTotalLength);
+    USB_LOG_RAW("    bNumInterfaces: 0x%02x      \r\n", hport->config.config_desc.bNumInterfaces);
+    USB_LOG_RAW("    bConfigurationValue: 0x%02x \r\n", hport->config.config_desc.bConfigurationValue);
+    USB_LOG_RAW("    iConfiguration: 0x%02x      \r\n", hport->config.config_desc.iConfiguration);
+    USB_LOG_RAW("    bmAttributes: 0x%02x        \r\n", hport->config.config_desc.bmAttributes);
+    USB_LOG_RAW("    bMaxPower: 0x%02x           \r\n", hport->config.config_desc.bMaxPower);

    for (uint8_t i = 0; i < hport->config.config_desc.bNumInterfaces; i++) {
        for (uint8_t j = 0; j < hport->config.intf[i].altsetting_num; j++) {
-            USB_LOG_RAW("\tInterface Descriptor:\r\n");
-            USB_LOG_RAW("\tbLength: 0x%02x            \r\n", hport->config.intf[i].altsetting[j].intf_desc.bLength);
-            USB_LOG_RAW("\tbDescriptorType: 0x%02x    \r\n", hport->config.intf[i].altsetting[j].intf_desc.bDescriptorType);
-            USB_LOG_RAW("\tbInterfaceNumber: 0x%02x   \r\n", hport->config.intf[i].altsetting[j].intf_desc.bInterfaceNumber);
-            USB_LOG_RAW("\tbAlternateSetting: 0x%02x  \r\n", hport->config.intf[i].altsetting[j].intf_desc.bAlternateSetting);
-            USB_LOG_RAW("\tbNumEndpoints: 0x%02x      \r\n", hport->config.intf[i].altsetting[j].intf_desc.bNumEndpoints);
-            USB_LOG_RAW("\tbInterfaceClass: 0x%02x    \r\n", hport->config.intf[i].altsetting[j].intf_desc.bInterfaceClass);
-            USB_LOG_RAW("\tbInterfaceSubClass: 0x%02x \r\n", hport->config.intf[i].altsetting[j].intf_desc.bInterfaceSubClass);
-            USB_LOG_RAW("\tbInterfaceProtocol: 0x%02x \r\n", hport->config.intf[i].altsetting[j].intf_desc.bInterfaceProtocol);
-            USB_LOG_RAW("\tiInterface: 0x%02x         \r\n", hport->config.intf[i].altsetting[j].intf_desc.iInterface);
+            USB_LOG_RAW("    Interface Descriptor:\r\n");
+            USB_LOG_RAW("      bLength: 0x%02x            \r\n", hport->config.intf[i].altsetting[j].intf_desc.bLength);
+            USB_LOG_RAW("      bDescriptorType: 0x%02x    \r\n", hport->config.intf[i].altsetting[j].intf_desc.bDescriptorType);
+            USB_LOG_RAW("      bInterfaceNumber: 0x%02x   \r\n", hport->config.intf[i].altsetting[j].intf_desc.bInterfaceNumber);
+            USB_LOG_RAW("      bAlternateSetting: 0x%02x  \r\n", hport->config.intf[i].altsetting[j].intf_desc.bAlternateSetting);
+            USB_LOG_RAW("      bNumEndpoints: 0x%02x      \r\n", hport->config.intf[i].altsetting[j].intf_desc.bNumEndpoints);
+            USB_LOG_RAW("      bInterfaceClass: 0x%02x    \r\n", hport->config.intf[i].altsetting[j].intf_desc.bInterfaceClass);
+            USB_LOG_RAW("      bInterfaceSubClass: 0x%02x \r\n", hport->config.intf[i].altsetting[j].intf_desc.bInterfaceSubClass);
+            USB_LOG_RAW("      bInterfaceProtocol: 0x%02x \r\n", hport->config.intf[i].altsetting[j].intf_desc.bInterfaceProtocol);
+            USB_LOG_RAW("      iInterface: 0x%02x         \r\n", hport->config.intf[i].altsetting[j].intf_desc.iInterface);

            for (uint8_t k = 0; k < hport->config.intf[i].altsetting[j].intf_desc.bNumEndpoints; k++) {
-                USB_LOG_RAW("\t\tEndpoint Descriptor:\r\n");
-                USB_LOG_RAW("\t\tbLength: 0x%02x          \r\n", hport->config.intf[i].altsetting[j].ep[k].ep_desc.bLength);
-                USB_LOG_RAW("\t\tbDescriptorType: 0x%02x  \r\n", hport->config.intf[i].altsetting[j].ep[k].ep_desc.bDescriptorType);
-                USB_LOG_RAW("\t\tbEndpointAddress: 0x%02x \r\n", hport->config.intf[i].altsetting[j].ep[k].ep_desc.bEndpointAddress);
-                USB_LOG_RAW("\t\tbmAttributes: 0x%02x     \r\n", hport->config.intf[i].altsetting[j].ep[k].ep_desc.bmAttributes);
-                USB_LOG_RAW("\t\twMaxPacketSize: 0x%04x   \r\n", hport->config.intf[i].altsetting[j].ep[k].ep_desc.wMaxPacketSize);
-                USB_LOG_RAW("\t\tbInterval: 0x%02x        \r\n", hport->config.intf[i].altsetting[j].ep[k].ep_desc.bInterval);
+                USB_LOG_RAW("      Endpoint Descriptor:\r\n");
+                USB_LOG_RAW("        bLength: 0x%02x          \r\n", hport->config.intf[i].altsetting[j].ep[k].ep_desc.bLength);
+                USB_LOG_RAW("        bDescriptorType: 0x%02x  \r\n", hport->config.intf[i].altsetting[j].ep[k].ep_desc.bDescriptorType);
+                USB_LOG_RAW("        bEndpointAddress: 0x%02x \r\n", hport->config.intf[i].altsetting[j].ep[k].ep_desc.bEndpointAddress);
+                USB_LOG_RAW("        bmAttributes: 0x%02x     \r\n", hport->config.intf[i].altsetting[j].ep[k].ep_desc.bmAttributes);
+                USB_LOG_RAW("        wMaxPacketSize: 0x%04x   \r\n", hport->config.intf[i].altsetting[j].ep[k].ep_desc.wMaxPacketSize);
+                USB_LOG_RAW("        bInterval: 0x%02x        \r\n", hport->config.intf[i].altsetting[j].ep[k].ep_desc.bInterval);
            }
        }
    }
--- a/core/usbh_core.h
+++ b/core/usbh_core.h
@@ -28,6 +28,35 @@
 extern "C" {
 #endif

+enum usbh_event_type {
+    /* USB HCD IRQ */
+    USBH_EVENT_ERROR,
+    USBH_EVENT_SOF,
+
+    /* USB DEVICE STATUS */
+    USBH_EVENT_DEVICE_RESET,
+    USBH_EVENT_DEVICE_CONNECTED,
+    USBH_EVENT_DEVICE_DISCONNECTED,
+    USBH_EVENT_DEVICE_CONFIGURED,
+    USBH_EVENT_DEVICE_WAKEUP,
+    USBH_EVENT_DEVICE_SUSPEND,
+    USBH_EVENT_DEVICE_RESUME,
+
+    /* USB DEVICE INTERFACE STATUS */
+    USBH_EVENT_INTERFACE_UNSUPPORTED,
+    USBH_EVENT_INTERFACE_START,
+    USBH_EVENT_INTERFACE_STOP,
+
+    /* USB FRAMEWORK STATUS */
+    USBH_EVENT_INIT,
+    USBH_EVENT_DEINIT,
+    USBH_EVENT_UNKNOWN,
+};
+
+#define USB_HUB_PORT_ANY  0
+#define USB_HUB_INDEX_ANY 0
+#define USB_INTERFACE_ANY 0xff
+
 #define USB_CLASS_MATCH_VENDOR        0x0001
 #define USB_CLASS_MATCH_PRODUCT       0x0002
 #define USB_CLASS_MATCH_INTF_CLASS    0x0004
@@ -135,7 +164,7 @@ struct usbh_hub {
    uint8_t powerdelay;
    uint8_t tt_think;
    bool ismtt;
-    struct usb_hub_descriptor hub_desc; /* USB 2.0 only */
+    struct usb_hub_descriptor hub_desc;       /* USB 2.0 only */
    struct usb_hub_ss_descriptor hub_ss_desc; /* USB 3.0 only */
    struct usbh_hubport child[CONFIG_USBHOST_MAX_EHPORTS];
    struct usbh_hubport *parent;
@@ -280,7 +309,7 @@ int usbh_get_string_desc(struct usbh_hubport *hport, uint8_t index, uint8_t *out
 */
 int usbh_set_interface(struct usbh_hubport *hport, uint8_t intf, uint8_t altsetting);

-int usbh_initialize(uint8_t busid, uintptr_t reg_base);
+int usbh_initialize(uint8_t busid, uintptr_t reg_base, usbh_event_handler_t event_handler);
 int usbh_deinitialize(uint8_t busid);
 void *usbh_find_class_instance(const char *devname);
 struct usbh_hubport *usbh_find_hubport(uint8_t busid, uint8_t hub_index, uint8_t hub_port);
--- a/demo/adb/usbd_adb_template.c
+++ b/demo/adb/usbd_adb_template.c
@@ -108,7 +108,6 @@ struct usb_msosv1_descriptor msosv1_desc = {
    .comp_id_property = WINUSB_IFx_WCIDProperties,
 };

-#ifdef CONFIG_USBDEV_ADVANCE_DESC
 static const uint8_t device_descriptor[] = {
    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0x00, 0x00, 0x00, USBD_VID, USBD_PID, 0x0100, 0x01)
 };
@@ -171,80 +170,6 @@ const struct usb_descriptor adb_descriptor = {
    .string_descriptor_callback = string_descriptor_callback,
    .msosv1_descriptor = &msosv1_desc
 };
-#else
-/*!< global descriptor */
-static const uint8_t adb_descriptor[] = {
-    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0x00, 0x00, 0x00, USBD_VID, USBD_PID, 0x0100, 0x01),
-    USB_CONFIG_DESCRIPTOR_INIT(USB_CONFIG_SIZE, 0x01, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
-    ADB_DESCRIPTOR_INIT(ADB_INTF_NUM, WINUSB_IN_EP, WINUSB_OUT_EP, WINUSB_MAX_MPS),
-    ///////////////////////////////////////
-    /// string0 descriptor
-    ///////////////////////////////////////
-    USB_LANGID_INIT(USBD_LANGID_STRING),
-    ///////////////////////////////////////
-    /// string1 descriptor
-    ///////////////////////////////////////
-    0x14,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ///////////////////////////////////////
-    /// string2 descriptor
-    ///////////////////////////////////////
-    0x14,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'A', 0x00,                  /* wcChar6 */
-    'D', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ///////////////////////////////////////
-    /// string3 descriptor
-    ///////////////////////////////////////
-    0x1C,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'A', 0x00,                  /* wcChar6 */
-    'D', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    '2', 0x00,                  /* wcChar9 */
-    '0', 0x00,                  /* wcChar10 */
-    '2', 0x00,                  /* wcChar11 */
-    '4', 0x00,                  /* wcChar12 */
-#ifdef CONFIG_USB_HS
-    ///////////////////////////////////////
-    /// device qualifier descriptor
-    ///////////////////////////////////////
-    0x0a,
-    USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER,
-    0x00,
-    0x02,
-    0x00,
-    0x00,
-    0x00,
-    0x40,
-    0x00,
-    0x00,
-#endif
-    0x00
-};
-#endif

 static void usbd_event_handler(uint8_t busid, uint8_t event)
 {
@@ -294,14 +219,9 @@ void cherryadb_init(uint8_t busid, uint32_t reg_base)
        }
    }
 #endif
-#ifdef CONFIG_USBDEV_ADVANCE_DESC
+
    usbd_desc_register(busid, &adb_descriptor);
-#else
-    usbd_desc_register(busid, adb_descriptor);
-#endif
-#ifndef CONFIG_USBDEV_ADVANCE_DESC
-    usbd_msosv1_desc_register(busid, &msosv1_desc);
-#endif
+
    usbd_add_interface(busid, usbd_adb_init_intf(busid, &intf0, WINUSB_IN_EP, WINUSB_OUT_EP));
    usbd_initialize(busid, reg_base, usbd_event_handler);
 }
--- a/demo/audio_v1_mic_multichan_template.c
+++ b/demo/audio_v1_mic_multichan_template.c
@@ -21,8 +21,9 @@

 #define AUDIO_IN_FU_ID 0x02

-/* AUDIO Class Config */
-#define AUDIO_FREQ 16000U
+#define AUDIO_MIC_FREQ            16000U
+#define AUDIO_MIC_FRAME_SIZE_BYTE 2u
+#define AUDIO_MIC_RESOLUTION_BIT  16u

 #define IN_CHANNEL_NUM 2

@@ -54,7 +55,7 @@

 /* AudioFreq * DataSize (2 bytes) * NumChannels (Stereo: 1) */
 /* 16bit(2 Bytes) 单声道(Mono:1) */
-#define AUDIO_IN_PACKET ((uint32_t)((AUDIO_FREQ * 2 * IN_CHANNEL_NUM) / 1000))
+#define AUDIO_IN_PACKET ((uint32_t)((AUDIO_MIC_FREQ * 2 * IN_CHANNEL_NUM) / 1000))

 #define USB_CONFIG_SIZE (unsigned long)(9 +                                                    \
                                        AUDIO_AC_DESCRIPTOR_LEN(1) +                           \
@@ -68,7 +69,6 @@
                      AUDIO_SIZEOF_AC_FEATURE_UNIT_DESC(IN_CHANNEL_NUM, 1) + \
                      AUDIO_SIZEOF_AC_OUTPUT_TERMINAL_DESC)

-#ifdef CONFIG_USBDEV_ADVANCE_DESC
 static const uint8_t device_descriptor[] = {
    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0xef, 0x02, 0x01, USBD_VID, USBD_PID, 0x0001, 0x01)
 };
@@ -79,7 +79,7 @@ static const uint8_t config_descriptor[] = {
    AUDIO_AC_INPUT_TERMINAL_DESCRIPTOR_INIT(0x01, AUDIO_INTERM_MIC, IN_CHANNEL_NUM, INPUT_CH_ENABLE),
    AUDIO_AC_FEATURE_UNIT_DESCRIPTOR_INIT(AUDIO_IN_FU_ID, 0x01, 0x01, INPUT_CTRL),
    AUDIO_AC_OUTPUT_TERMINAL_DESCRIPTOR_INIT(0x03, AUDIO_TERMINAL_STREAMING, AUDIO_IN_FU_ID),
-    AUDIO_AS_DESCRIPTOR_INIT(0x01, 0x03, IN_CHANNEL_NUM, 2, 16, AUDIO_IN_EP, 0x05, AUDIO_IN_PACKET, EP_INTERVAL, AUDIO_SAMPLE_FREQ_3B(AUDIO_FREQ))
+    AUDIO_AS_DESCRIPTOR_INIT(0x01, 0x03, IN_CHANNEL_NUM, AUDIO_MIC_FRAME_SIZE_BYTE, AUDIO_MIC_RESOLUTION_BIT, AUDIO_IN_EP, 0x05, AUDIO_IN_PACKET, EP_INTERVAL, AUDIO_SAMPLE_FREQ_3B(AUDIO_MIC_FREQ))
 };

 static const uint8_t device_quality_descriptor[] = {
@@ -134,89 +134,6 @@ const struct usb_descriptor audio_v1_descriptor = {
    .device_quality_descriptor_callback = device_quality_descriptor_callback,
    .string_descriptor_callback = string_descriptor_callback
 };
-#else
-const uint8_t audio_v1_descriptor[] = {
-    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0xef, 0x02, 0x01, USBD_VID, USBD_PID, 0x0001, 0x01),
-    USB_CONFIG_DESCRIPTOR_INIT(USB_CONFIG_SIZE, 0x02, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
-    AUDIO_AC_DESCRIPTOR_INIT(0x00, 0x02, AUDIO_AC_SIZ, 0x00, 0x01),
-    AUDIO_AC_INPUT_TERMINAL_DESCRIPTOR_INIT(0x01, AUDIO_INTERM_MIC, IN_CHANNEL_NUM, INPUT_CH_ENABLE),
-    AUDIO_AC_FEATURE_UNIT_DESCRIPTOR_INIT(AUDIO_IN_FU_ID, 0x01, 0x01, INPUT_CTRL),
-    AUDIO_AC_OUTPUT_TERMINAL_DESCRIPTOR_INIT(0x03, AUDIO_TERMINAL_STREAMING, AUDIO_IN_FU_ID),
-    AUDIO_AS_DESCRIPTOR_INIT(0x01, 0x03, IN_CHANNEL_NUM, 2, 16, AUDIO_IN_EP, 0x05, AUDIO_IN_PACKET, EP_INTERVAL, AUDIO_SAMPLE_FREQ_3B(AUDIO_FREQ)),
-    ///////////////////////////////////////
-    /// string0 descriptor
-    ///////////////////////////////////////
-    USB_LANGID_INIT(USBD_LANGID_STRING),
-    ///////////////////////////////////////
-    /// string1 descriptor
-    ///////////////////////////////////////
-    0x14,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ///////////////////////////////////////
-    /// string2 descriptor
-    ///////////////////////////////////////
-    0x26,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ' ', 0x00,                  /* wcChar9 */
-    'U', 0x00,                  /* wcChar10 */
-    'A', 0x00,                  /* wcChar11 */
-    'C', 0x00,                  /* wcChar12 */
-    ' ', 0x00,                  /* wcChar13 */
-    'D', 0x00,                  /* wcChar14 */
-    'E', 0x00,                  /* wcChar15 */
-    'M', 0x00,                  /* wcChar16 */
-    'O', 0x00,                  /* wcChar17 */
-    ///////////////////////////////////////
-    /// string3 descriptor
-    ///////////////////////////////////////
-    0x16,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    '2', 0x00,                  /* wcChar0 */
-    '0', 0x00,                  /* wcChar1 */
-    '2', 0x00,                  /* wcChar2 */
-    '2', 0x00,                  /* wcChar3 */
-    '1', 0x00,                  /* wcChar4 */
-    '2', 0x00,                  /* wcChar5 */
-    '3', 0x00,                  /* wcChar6 */
-    '4', 0x00,                  /* wcChar7 */
-    '5', 0x00,                  /* wcChar8 */
-    '0' + IN_CHANNEL_NUM, 0x00, /* wcChar9 */
-#ifdef CONFIG_USB_HS
-    ///////////////////////////////////////
-    /// device qualifier descriptor
-    ///////////////////////////////////////
-    0x0a,
-    USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER,
-    0x00,
-    0x02,
-    0x00,
-    0x00,
-    0x00,
-    0x40,
-    0x00,
-    0x00,
-#endif
-    0x00
-};
-#endif

 volatile bool tx_flag = 0;
 volatile bool ep_tx_busy_flag = false;
@@ -305,11 +222,8 @@ struct audio_entity_info audio_entity_table[] = {

 void audio_v1_init(uint8_t busid, uintptr_t reg_base)
 {
-#ifdef CONFIG_USBDEV_ADVANCE_DESC
    usbd_desc_register(busid, &audio_v1_descriptor);
-#else
-    usbd_desc_register(busid, audio_v1_descriptor);
-#endif
+
    usbd_add_interface(busid, usbd_audio_init_intf(busid, &intf0, 0x0100, audio_entity_table, 1));
    usbd_add_interface(busid, usbd_audio_init_intf(busid, &intf1, 0x0100, audio_entity_table, 1));
    usbd_add_endpoint(busid, &audio_in_ep);
--- a/demo/audio_v1_mic_speaker_multichan_template.c
+++ b/demo/audio_v1_mic_speaker_multichan_template.c
@@ -131,7 +131,6 @@
                      AUDIO_SIZEOF_AC_FEATURE_UNIT_DESC(OUT_CHANNEL_NUM, 1) + \
                      AUDIO_SIZEOF_AC_OUTPUT_TERMINAL_DESC)

-#ifdef CONFIG_USBDEV_ADVANCE_DESC
 static const uint8_t device_descriptor[] = {
    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0xef, 0x02, 0x01, USBD_VID, USBD_PID, 0x0001, 0x01)
 };
@@ -208,104 +207,6 @@ const struct usb_descriptor audio_v1_descriptor = {
    .device_quality_descriptor_callback = device_quality_descriptor_callback,
    .string_descriptor_callback = string_descriptor_callback
 };
-#else
-const uint8_t audio_v1_descriptor[] = {
-    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0xef, 0x02, 0x01, USBD_VID, USBD_PID, 0x0001, 0x01),
-    USB_CONFIG_DESCRIPTOR_INIT(USB_CONFIG_SIZE, 0x03, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
-    AUDIO_AC_DESCRIPTOR_INIT(0x00, 0x03, AUDIO_AC_SIZ, 0x00, 0x01, 0x02),
-    AUDIO_AC_INPUT_TERMINAL_DESCRIPTOR_INIT(0x01, AUDIO_INTERM_MIC, IN_CHANNEL_NUM, INPUT_CH_ENABLE),
-    AUDIO_AC_FEATURE_UNIT_DESCRIPTOR_INIT(AUDIO_IN_FU_ID, 0x01, 0x01, INPUT_CTRL),
-    AUDIO_AC_OUTPUT_TERMINAL_DESCRIPTOR_INIT(0x03, AUDIO_TERMINAL_STREAMING, AUDIO_IN_FU_ID),
-    AUDIO_AC_INPUT_TERMINAL_DESCRIPTOR_INIT(0x04, AUDIO_TERMINAL_STREAMING, OUT_CHANNEL_NUM, OUTPUT_CH_ENABLE),
-    AUDIO_AC_FEATURE_UNIT_DESCRIPTOR_INIT(AUDIO_OUT_FU_ID, 0x04, 0x01, OUTPUT_CTRL),
-    AUDIO_AC_OUTPUT_TERMINAL_DESCRIPTOR_INIT(0x06, AUDIO_OUTTERM_SPEAKER, AUDIO_OUT_FU_ID),
-    AUDIO_AS_DESCRIPTOR_INIT(0x01, 0x03, IN_CHANNEL_NUM, AUDIO_MIC_FRAME_SIZE_BYTE, AUDIO_MIC_RESOLUTION_BIT, AUDIO_IN_EP, 0x05, AUDIO_IN_PACKET,
-                             EP_INTERVAL, AUDIO_SAMPLE_FREQ_3B(AUDIO_MIC_FREQ)),
-#if USING_FEEDBACK == 0
-    AUDIO_AS_DESCRIPTOR_INIT(0x02, 0x04, OUT_CHANNEL_NUM, AUDIO_SPEAKER_FRAME_SIZE_BYTE, AUDIO_SPEAKER_RESOLUTION_BIT, AUDIO_OUT_EP, 0x09, AUDIO_OUT_PACKET,
-                             EP_INTERVAL, AUDIO_SAMPLE_FREQ_3B(AUDIO_SPEAKER_FREQ)),
-#else
-    AUDIO_AS_FEEDBACK_DESCRIPTOR_INIT(0x02, 0x04, OUT_CHANNEL_NUM, AUDIO_SPEAKER_FRAME_SIZE_BYTE, AUDIO_SPEAKER_RESOLUTION_BIT, AUDIO_OUT_EP, AUDIO_OUT_PACKET,
-                                      EP_INTERVAL, AUDIO_OUT_FEEDBACK_EP, AUDIO_SAMPLE_FREQ_3B(AUDIO_SPEAKER_FREQ)),
-#endif
-    ///////////////////////////////////////
-    /// string0 descriptor
-    ///////////////////////////////////////
-    USB_LANGID_INIT(USBD_LANGID_STRING),
-    ///////////////////////////////////////
-    /// string1 descriptor
-    ///////////////////////////////////////
-    0x14,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ///////////////////////////////////////
-    /// string2 descriptor
-    ///////////////////////////////////////
-    0x26,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ' ', 0x00,                  /* wcChar9 */
-    'U', 0x00,                  /* wcChar10 */
-    'A', 0x00,                  /* wcChar11 */
-    'C', 0x00,                  /* wcChar12 */
-    ' ', 0x00,                  /* wcChar13 */
-    'D', 0x00,                  /* wcChar14 */
-    'E', 0x00,                  /* wcChar15 */
-    'M', 0x00,                  /* wcChar16 */
-    'O', 0x00,                  /* wcChar17 */
-    ///////////////////////////////////////
-    /// string3 descriptor
-    ///////////////////////////////////////
-    0x16,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    '2', 0x00,                  /* wcChar0 */
-    '0', 0x00,                  /* wcChar1 */
-    '2', 0x00,                  /* wcChar2 */
-    '2', 0x00,                  /* wcChar3 */
-    '1', 0x00,                  /* wcChar4 */
-    '2', 0x00,                  /* wcChar5 */
-    '3', 0x00,                  /* wcChar6 */
-    '4', 0x00,                  /* wcChar7 */
-    '5', 0x00,                  /* wcChar8 */
-#if USING_FEEDBACK == 0
-    '1', 0x00,                  /* wcChar9 */
-#else
-    '2', 0x00, /* wcChar9 */
-#endif
-#ifdef CONFIG_USB_HS
-    ///////////////////////////////////////
-    /// device qualifier descriptor
-    ///////////////////////////////////////
-    0x0a,
-    USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER,
-    0x00,
-    0x02,
-    0x00,
-    0x00,
-    0x00,
-    0x40,
-    0x00,
-    0x00,
-#endif
-    0x00
-};
-#endif

 USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t read_buffer[AUDIO_OUT_PACKET];
 USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t write_buffer[AUDIO_IN_PACKET];
@@ -453,11 +354,8 @@ struct audio_entity_info audio_entity_table[] = {

 void audio_v1_init(uint8_t busid, uintptr_t reg_base)
 {
-#ifdef CONFIG_USBDEV_ADVANCE_DESC
    usbd_desc_register(busid, &audio_v1_descriptor);
-#else
-    usbd_desc_register(busid, audio_v1_descriptor);
-#endif
+
    usbd_add_interface(busid, usbd_audio_init_intf(busid, &intf0, 0x0100, audio_entity_table, 2));
    usbd_add_interface(busid, usbd_audio_init_intf(busid, &intf1, 0x0100, audio_entity_table, 2));
    usbd_add_interface(busid, usbd_audio_init_intf(busid, &intf2, 0x0100, audio_entity_table, 2));
--- a/demo/audio_v2_mic_multichan_template.c
+++ b/demo/audio_v2_mic_multichan_template.c
@@ -72,7 +72,6 @@
                      AUDIO_V2_SIZEOF_AC_FEATURE_UNIT_DESC(IN_CHANNEL_NUM) + \
                      AUDIO_V2_SIZEOF_AC_OUTPUT_TERMINAL_DESC)

-#ifdef CONFIG_USBDEV_ADVANCE_DESC
 static const uint8_t device_descriptor[] = {
    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0x00, 0x00, 0x00, USBD_VID, USBD_PID, 0x0001, 0x01)
 };
@@ -139,90 +138,6 @@ const struct usb_descriptor audio_v2_descriptor = {
    .device_quality_descriptor_callback = device_quality_descriptor_callback,
    .string_descriptor_callback = string_descriptor_callback
 };
-#else
-const uint8_t audio_v2_descriptor[] = {
-    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0x00, 0x00, 0x00, USBD_VID, USBD_PID, 0x0001, 0x01),
-    USB_CONFIG_DESCRIPTOR_INIT(USB_CONFIG_SIZE, 0x02, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
-    AUDIO_V2_AC_DESCRIPTOR_INIT(0x00, 0x02, AUDIO_AC_SIZ, AUDIO_CATEGORY_MICROPHONE, 0x00, 0x00),
-    AUDIO_V2_AC_CLOCK_SOURCE_DESCRIPTOR_INIT(AUDIO_IN_CLOCK_ID, 0x03, 0x03),
-    AUDIO_V2_AC_INPUT_TERMINAL_DESCRIPTOR_INIT(0x02, AUDIO_INTERM_MIC, AUDIO_IN_CLOCK_ID, IN_CHANNEL_NUM, INPUT_CH_ENABLE, 0x0000),
-    AUDIO_V2_AC_FEATURE_UNIT_DESCRIPTOR_INIT(AUDIO_IN_FU_ID, 0x02, INPUT_CTRL),
-    AUDIO_V2_AC_OUTPUT_TERMINAL_DESCRIPTOR_INIT(0x04, AUDIO_TERMINAL_STREAMING, AUDIO_IN_FU_ID, AUDIO_IN_CLOCK_ID, 0x0000),
-    AUDIO_V2_AS_DESCRIPTOR_INIT(0x01, 0x04, IN_CHANNEL_NUM, INPUT_CH_ENABLE, AUDIO_MIC_FRAME_SIZE_BYTE, AUDIO_MIC_RESOLUTION_BIT, AUDIO_IN_EP, 0x05, (AUDIO_IN_PACKET + 4), EP_INTERVAL),
-    ///////////////////////////////////////
-    /// string0 descriptor
-    ///////////////////////////////////////
-    USB_LANGID_INIT(USBD_LANGID_STRING),
-    ///////////////////////////////////////
-    /// string1 descriptor
-    ///////////////////////////////////////
-    0x14,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ///////////////////////////////////////
-    /// string2 descriptor
-    ///////////////////////////////////////
-    0x26,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ' ', 0x00,                  /* wcChar9 */
-    'U', 0x00,                  /* wcChar10 */
-    'A', 0x00,                  /* wcChar11 */
-    'C', 0x00,                  /* wcChar12 */
-    ' ', 0x00,                  /* wcChar13 */
-    'D', 0x00,                  /* wcChar14 */
-    'E', 0x00,                  /* wcChar15 */
-    'M', 0x00,                  /* wcChar16 */
-    'O', 0x00,                  /* wcChar17 */
-    ///////////////////////////////////////
-    /// string3 descriptor
-    ///////////////////////////////////////
-    0x16,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    '2', 0x00,                  /* wcChar0 */
-    '0', 0x00,                  /* wcChar1 */
-    '2', 0x00,                  /* wcChar2 */
-    '1', 0x00,                  /* wcChar3 */
-    '0', 0x00,                  /* wcChar4 */
-    '3', 0x00,                  /* wcChar5 */
-    '1', 0x00,                  /* wcChar6 */
-    '0', 0x00,                  /* wcChar7 */
-    '0', 0x00,                  /* wcChar8 */
-    '4', 0x00,                  /* wcChar9 */
-#ifdef CONFIG_USB_HS
-    ///////////////////////////////////////
-    /// device qualifier descriptor
-    ///////////////////////////////////////
-    0x0a,
-    USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER,
-    0x00,
-    0x02,
-    0x00,
-    0x00,
-    0x00,
-    0x40,
-    0x00,
-    0x00,
-#endif
-    0x00
-};
-#endif

 static const uint8_t mic_default_sampling_freq_table[] = {
    AUDIO_SAMPLE_FREQ_NUM(5),
@@ -339,11 +254,8 @@ struct audio_entity_info audio_entity_table[] = {

 void audio_v2_init(uint8_t busid, uintptr_t reg_base)
 {
-#ifdef CONFIG_USBDEV_ADVANCE_DESC
    usbd_desc_register(busid, &audio_v2_descriptor);
-#else
-    usbd_desc_register(busid, audio_v2_descriptor);
-#endif
+
    usbd_add_interface(busid, usbd_audio_init_intf(busid, &intf0, 0x0200, audio_entity_table, 2));
    usbd_add_interface(busid, usbd_audio_init_intf(busid, &intf1, 0x0200, audio_entity_table, 2));
    usbd_add_endpoint(busid, &audio_in_ep);
--- a/demo/audio_v2_mic_speaker_multichan_template.c
+++ b/demo/audio_v2_mic_speaker_multichan_template.c
@@ -138,7 +138,6 @@
                      AUDIO_V2_SIZEOF_AC_FEATURE_UNIT_DESC(IN_CHANNEL_NUM) +  \
                      AUDIO_V2_SIZEOF_AC_OUTPUT_TERMINAL_DESC)

-#ifdef CONFIG_USBDEV_ADVANCE_DESC
 static const uint8_t device_descriptor[] = {
    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0x00, 0x00, 0x00, USBD_VID, USBD_PID, 0x0001, 0x01)
 };
@@ -214,103 +213,6 @@ const struct usb_descriptor audio_v2_descriptor = {
    .device_quality_descriptor_callback = device_quality_descriptor_callback,
    .string_descriptor_callback = string_descriptor_callback
 };
-#else
-uint8_t audio_v2_descriptor[] = {
-    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0x00, 0x00, 0x00, USBD_VID, USBD_PID, 0x0001, 0x01),
-    USB_CONFIG_DESCRIPTOR_INIT(USB_CONFIG_SIZE, 0x03, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
-    AUDIO_V2_AC_DESCRIPTOR_INIT(0x00, 0x03, AUDIO_AC_SIZ, AUDIO_CATEGORY_UNDEF, 0x00, 0x00),
-    AUDIO_V2_AC_CLOCK_SOURCE_DESCRIPTOR_INIT(AUDIO_OUT_CLOCK_ID, 0x03, 0x03),
-    AUDIO_V2_AC_INPUT_TERMINAL_DESCRIPTOR_INIT(0x02, AUDIO_TERMINAL_STREAMING, AUDIO_OUT_CLOCK_ID, OUT_CHANNEL_NUM, OUTPUT_CH_ENABLE, 0x0000),
-    AUDIO_V2_AC_FEATURE_UNIT_DESCRIPTOR_INIT(AUDIO_OUT_FU_ID, 0x02, OUTPUT_CTRL),
-    AUDIO_V2_AC_OUTPUT_TERMINAL_DESCRIPTOR_INIT(0x04, AUDIO_OUTTERM_SPEAKER, AUDIO_OUT_FU_ID, AUDIO_OUT_CLOCK_ID, 0x0000),
-    AUDIO_V2_AC_CLOCK_SOURCE_DESCRIPTOR_INIT(AUDIO_IN_CLOCK_ID, 0x03, 0x03),
-    AUDIO_V2_AC_INPUT_TERMINAL_DESCRIPTOR_INIT(0x06, AUDIO_INTERM_MIC, AUDIO_IN_CLOCK_ID, IN_CHANNEL_NUM, INPUT_CH_ENABLE, 0x0000),
-    AUDIO_V2_AC_FEATURE_UNIT_DESCRIPTOR_INIT(AUDIO_IN_FU_ID, 0x06, INPUT_CTRL),
-    AUDIO_V2_AC_OUTPUT_TERMINAL_DESCRIPTOR_INIT(0x08, AUDIO_TERMINAL_STREAMING, AUDIO_IN_FU_ID, AUDIO_IN_CLOCK_ID, 0x0000),
-#if USING_FEEDBACK == 0
-    AUDIO_V2_AS_DESCRIPTOR_INIT(0x01, 0x02, OUT_CHANNEL_NUM, OUTPUT_CH_ENABLE, AUDIO_SPEAKER_FRAME_SIZE_BYTE, AUDIO_SPEAKER_RESOLUTION_BIT, AUDIO_OUT_EP, 0x09, AUDIO_OUT_PACKET, EP_INTERVAL),
-#else
-    AUDIO_V2_AS_FEEDBACK_DESCRIPTOR_INIT(0x01, 0x02, OUT_CHANNEL_NUM, OUTPUT_CH_ENABLE, AUDIO_SPEAKER_FRAME_SIZE_BYTE, AUDIO_SPEAKER_RESOLUTION_BIT, AUDIO_OUT_EP, 0x09, AUDIO_OUT_PACKET, EP_INTERVAL, AUDIO_OUT_FEEDBACK_EP),
-#endif
-    AUDIO_V2_AS_DESCRIPTOR_INIT(0x02, 0x08, IN_CHANNEL_NUM, INPUT_CH_ENABLE, AUDIO_MIC_FRAME_SIZE_BYTE, AUDIO_MIC_RESOLUTION_BIT, AUDIO_IN_EP, 0x05, (AUDIO_IN_PACKET + 4), EP_INTERVAL),
-    ///////////////////////////////////////
-    /// string0 descriptor
-    ///////////////////////////////////////
-    USB_LANGID_INIT(USBD_LANGID_STRING),
-    ///////////////////////////////////////
-    /// string1 descriptor
-    ///////////////////////////////////////
-    0x14,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ///////////////////////////////////////
-    /// string2 descriptor
-    ///////////////////////////////////////
-    0x26,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ' ', 0x00,                  /* wcChar9 */
-    'U', 0x00,                  /* wcChar10 */
-    'A', 0x00,                  /* wcChar11 */
-    'C', 0x00,                  /* wcChar12 */
-    ' ', 0x00,                  /* wcChar13 */
-    'D', 0x00,                  /* wcChar14 */
-    'E', 0x00,                  /* wcChar15 */
-    'M', 0x00,                  /* wcChar16 */
-    'O', 0x00,                  /* wcChar17 */
-    ///////////////////////////////////////
-    /// string3 descriptor
-    ///////////////////////////////////////
-    0x16,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    '2', 0x00,                  /* wcChar0 */
-    '0', 0x00,                  /* wcChar1 */
-    '2', 0x00,                  /* wcChar2 */
-    '1', 0x00,                  /* wcChar3 */
-    '0', 0x00,                  /* wcChar4 */
-    '3', 0x00,                  /* wcChar5 */
-    '1', 0x00,                  /* wcChar6 */
-    '0', 0x00,                  /* wcChar7 */
-    '0', 0x00,                  /* wcChar8 */
-#if USING_FEEDBACK == 0
-    '3', 0x00,                  /* wcChar9 */
-#else
-    '4', 0x00, /* wcChar9 */
-#endif
-#ifdef CONFIG_USB_HS
-    ///////////////////////////////////////
-    /// device qualifier descriptor
-    ///////////////////////////////////////
-    0x0a,
-    USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER,
-    0x00,
-    0x02,
-    0x00,
-    0x00,
-    0x00,
-    0x40,
-    0x00,
-    0x00,
-#endif
-    0x00
-};
-#endif

 static const uint8_t speaker_default_sampling_freq_table[] = {
    AUDIO_SAMPLE_FREQ_NUM(5),
@@ -519,11 +421,8 @@ struct audio_entity_info audio_entity_table[] = {

 void audio_v2_init(uint8_t busid, uintptr_t reg_base)
 {
-#ifdef CONFIG_USBDEV_ADVANCE_DESC
    usbd_desc_register(busid, &audio_v2_descriptor);
-#else
-    usbd_desc_register(busid, audio_v2_descriptor);
-#endif
+
    usbd_add_interface(busid, usbd_audio_init_intf(busid, &intf0, 0x0200, audio_entity_table, 4));
    usbd_add_interface(busid, usbd_audio_init_intf(busid, &intf1, 0x0200, audio_entity_table, 4));
    usbd_add_interface(busid, usbd_audio_init_intf(busid, &intf2, 0x0200, audio_entity_table, 4));
--- a/demo/audio_v2_speaker_multichan_template.c
+++ b/demo/audio_v2_speaker_multichan_template.c
@@ -87,7 +87,6 @@
                      AUDIO_V2_SIZEOF_AC_FEATURE_UNIT_DESC(OUT_CHANNEL_NUM) + \
                      AUDIO_V2_SIZEOF_AC_OUTPUT_TERMINAL_DESC)

-#ifdef CONFIG_USBDEV_ADVANCE_DESC
 static const uint8_t device_descriptor[] = {
    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0x00, 0x00, 0x00, USBD_VID, USBD_PID, 0x0001, 0x01)
 };
@@ -158,98 +157,6 @@ const struct usb_descriptor audio_v2_descriptor = {
    .device_quality_descriptor_callback = device_quality_descriptor_callback,
    .string_descriptor_callback = string_descriptor_callback
 };
-#else
-const uint8_t audio_v2_descriptor[] = {
-    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0x00, 0x00, 0x00, USBD_VID, USBD_PID, 0x0001, 0x01),
-    USB_CONFIG_DESCRIPTOR_INIT(USB_CONFIG_SIZE, 0x02, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
-    AUDIO_V2_AC_DESCRIPTOR_INIT(0x00, 0x02, AUDIO_AC_SIZ, AUDIO_CATEGORY_SPEAKER, 0x00, 0x00),
-    AUDIO_V2_AC_CLOCK_SOURCE_DESCRIPTOR_INIT(AUDIO_OUT_CLOCK_ID, 0x03, 0x03),
-    AUDIO_V2_AC_INPUT_TERMINAL_DESCRIPTOR_INIT(0x02, AUDIO_TERMINAL_STREAMING, AUDIO_OUT_CLOCK_ID, OUT_CHANNEL_NUM, OUTPUT_CH_ENABLE, 0x0000),
-    AUDIO_V2_AC_FEATURE_UNIT_DESCRIPTOR_INIT(AUDIO_OUT_FU_ID, 0x02, OUTPUT_CTRL),
-    AUDIO_V2_AC_OUTPUT_TERMINAL_DESCRIPTOR_INIT(0x04, AUDIO_OUTTERM_SPEAKER, AUDIO_OUT_FU_ID, AUDIO_OUT_CLOCK_ID, 0x0000),
-#if USING_FEEDBACK == 0
-    AUDIO_V2_AS_DESCRIPTOR_INIT(0x01, 0x02, OUT_CHANNEL_NUM, OUTPUT_CH_ENABLE, HALF_WORD_BYTES, SAMPLE_BITS, AUDIO_OUT_EP, 0x09, AUDIO_OUT_PACKET, EP_INTERVAL),
-#else
-    AUDIO_V2_AS_FEEDBACK_DESCRIPTOR_INIT(0x01, 0x02, OUT_CHANNEL_NUM, OUTPUT_CH_ENABLE, HALF_WORD_BYTES, SAMPLE_BITS, AUDIO_OUT_EP, AUDIO_OUT_PACKET, EP_INTERVAL, AUDIO_OUT_FEEDBACK_EP),
-#endif
-    ///////////////////////////////////////
-    /// string0 descriptor
-    ///////////////////////////////////////
-    USB_LANGID_INIT(USBD_LANGID_STRING),
-    ///////////////////////////////////////
-    /// string1 descriptor
-    ///////////////////////////////////////
-    0x14,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ///////////////////////////////////////
-    /// string2 descriptor
-    ///////////////////////////////////////
-    0x26,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ' ', 0x00,                  /* wcChar9 */
-    'U', 0x00,                  /* wcChar10 */
-    'A', 0x00,                  /* wcChar11 */
-    'C', 0x00,                  /* wcChar12 */
-    ' ', 0x00,                  /* wcChar13 */
-    'D', 0x00,                  /* wcChar14 */
-    'E', 0x00,                  /* wcChar15 */
-    'M', 0x00,                  /* wcChar16 */
-    'O', 0x00,                  /* wcChar17 */
-    ///////////////////////////////////////
-    /// string3 descriptor
-    ///////////////////////////////////////
-    0x16,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    '2', 0x00,                  /* wcChar0 */
-    '0', 0x00,                  /* wcChar1 */
-    '2', 0x00,                  /* wcChar2 */
-    '1', 0x00,                  /* wcChar3 */
-    '0', 0x00,                  /* wcChar4 */
-    '3', 0x00,                  /* wcChar5 */
-    '1', 0x00,                  /* wcChar6 */
-    '0', 0x00,                  /* wcChar7 */
-    '0', 0x00,                  /* wcChar8 */
-#if USING_FEEDBACK == 0
-    '3', 0x00,                  /* wcChar9 */
-#else
-    '4', 0x00, /* wcChar9 */
-#endif
-#ifdef CONFIG_USB_HS
-    ///////////////////////////////////////
-    /// device qualifier descriptor
-    ///////////////////////////////////////
-    0x0a,
-    USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER,
-    0x00,
-    0x02,
-    0x00,
-    0x00,
-    0x00,
-    0x40,
-    0x00,
-    0x00,
-#endif
-    0x00
-};
-#endif

 static const uint8_t default_sampling_freq_table[] = {
    AUDIO_SAMPLE_FREQ_NUM(5),
@@ -401,11 +308,8 @@ struct audio_entity_info audio_entity_table[] = {

 void audio_v2_init(uint8_t busid, uintptr_t reg_base)
 {
-#ifdef CONFIG_USBDEV_ADVANCE_DESC
    usbd_desc_register(busid, &audio_v2_descriptor);
-#else
-    usbd_desc_register(busid, audio_v2_descriptor);
-#endif
+
    usbd_add_interface(busid, usbd_audio_init_intf(busid, &intf0, 0x0200, audio_entity_table, 2));
    usbd_add_interface(busid, usbd_audio_init_intf(busid, &intf1, 0x0200, audio_entity_table, 2));
    usbd_add_endpoint(busid, &audio_out_ep);
--- a/demo/bootuf2/msc_bootuf2_template.c
+++ b/demo/bootuf2/msc_bootuf2_template.c
@@ -23,7 +23,6 @@
 #define MSC_MAX_MPS 64
 #endif

-#ifdef CONFIG_USBDEV_ADVANCE_DESC
 static const uint8_t device_descriptor[] = {
    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0x00, 0x00, 0x00, USBD_VID, USBD_PID, 0x0200, 0x01)
 };
@@ -85,85 +84,6 @@ const struct usb_descriptor msc_bootuf2_descriptor = {
    .device_quality_descriptor_callback = device_quality_descriptor_callback,
    .string_descriptor_callback = string_descriptor_callback
 };
-#else
-const uint8_t msc_bootuf2_descriptor[] = {
-    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0x00, 0x00, 0x00, USBD_VID, USBD_PID, 0x0200, 0x01),
-    USB_CONFIG_DESCRIPTOR_INIT(USB_CONFIG_SIZE, 0x01, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
-    MSC_DESCRIPTOR_INIT(0x00, MSC_OUT_EP, MSC_IN_EP, MSC_MAX_MPS, 0x02),
-    ///////////////////////////////////////
-    /// string0 descriptor
-    ///////////////////////////////////////
-    USB_LANGID_INIT(USBD_LANGID_STRING),
-    ///////////////////////////////////////
-    /// string1 descriptor
-    ///////////////////////////////////////
-    0x14,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ///////////////////////////////////////
-    /// string2 descriptor
-    ///////////////////////////////////////
-    0x26,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ' ', 0x00,                  /* wcChar9 */
-    'U', 0x00,                  /* wcChar10 */
-    'F', 0x00,                  /* wcChar11 */
-    '2', 0x00,                  /* wcChar12 */
-    ' ', 0x00,                  /* wcChar13 */
-    'D', 0x00,                  /* wcChar14 */
-    'E', 0x00,                  /* wcChar15 */
-    'M', 0x00,                  /* wcChar16 */
-    'O', 0x00,                  /* wcChar17 */
-    ///////////////////////////////////////
-    /// string3 descriptor
-    ///////////////////////////////////////
-    0x16,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    '2', 0x00,                  /* wcChar0 */
-    '0', 0x00,                  /* wcChar1 */
-    '2', 0x00,                  /* wcChar2 */
-    '2', 0x00,                  /* wcChar3 */
-    '1', 0x00,                  /* wcChar4 */
-    '2', 0x00,                  /* wcChar5 */
-    '3', 0x00,                  /* wcChar6 */
-    '4', 0x00,                  /* wcChar7 */
-    '5', 0x00,                  /* wcChar8 */
-    '6', 0x00,                  /* wcChar9 */
-#ifdef CONFIG_USB_HS
-    ///////////////////////////////////////
-    /// device qualifier descriptor
-    ///////////////////////////////////////
-    0x0a,
-    USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER,
-    0x00,
-    0x02,
-    0x00,
-    0x00,
-    0x00,
-    0x40,
-    0x00,
-    0x00,
-#endif
-    0x00
-};
-#endif

 static void usbd_event_handler(uint8_t busid, uint8_t event)
 {
@@ -215,11 +135,9 @@ static struct usbd_interface intf0;
 void msc_bootuf2_init(uint8_t busid, uintptr_t reg_base)
 {
    boot2uf2_flash_init();
-#ifdef CONFIG_USBDEV_ADVANCE_DESC
+
    usbd_desc_register(busid, &msc_bootuf2_descriptor);
-#else
-    usbd_desc_register(busid, msc_bootuf2_descriptor);
-#endif
+
    usbd_add_interface(busid, usbd_msc_init_intf(busid, &intf0, MSC_OUT_EP, MSC_IN_EP));

    usbd_initialize(busid, reg_base, usbd_event_handler);
--- a/demo/cdc_acm_hid_msc_template.c
+++ b/demo/cdc_acm_hid_msc_template.c
@@ -43,7 +43,6 @@
 #define MSC_MAX_MPS 64
 #endif

-#ifdef CONFIG_USBDEV_ADVANCE_DESC
 static const uint8_t device_descriptor[] = {
    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0x00, 0x00, 0x00, USBD_VID, USBD_PID, 0x0200, 0x01)
 };
@@ -107,87 +106,6 @@ const struct usb_descriptor cdc_acm_hid_msc_descriptor = {
    .device_quality_descriptor_callback = device_quality_descriptor_callback,
    .string_descriptor_callback = string_descriptor_callback
 };
-#else
-const uint8_t cdc_acm_hid_msc_descriptor[] = {
-    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0x00, 0x00, 0x00, USBD_VID, USBD_PID, 0x0200, 0x01),
-    USB_CONFIG_DESCRIPTOR_INIT(USB_CONFIG_SIZE, 0x04, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
-    CDC_ACM_DESCRIPTOR_INIT(0x00, CDC_INT_EP, CDC_OUT_EP, CDC_IN_EP, CDC_MAX_MPS, 0x02),
-    MSC_DESCRIPTOR_INIT(0x02, MSC_OUT_EP, MSC_IN_EP, MSC_MAX_MPS, 0x02),
-    HID_MOUSE_DESCRIPTOR_INIT(0x03, 0x01, HID_MOUSE_REPORT_DESC_SIZE, HID_INT_EP, HID_INT_EP_SIZE, HID_INT_EP_INTERVAL),
-    ///////////////////////////////////////
-    /// string0 descriptor
-    ///////////////////////////////////////
-    USB_LANGID_INIT(USBD_LANGID_STRING),
-    ///////////////////////////////////////
-    /// string1 descriptor
-    ///////////////////////////////////////
-    0x14,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ///////////////////////////////////////
-    /// string2 descriptor
-    ///////////////////////////////////////
-    0x26,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ' ', 0x00,                  /* wcChar9 */
-    'C', 0x00,                  /* wcChar10 */
-    'M', 0x00,                  /* wcChar11 */
-    'H', 0x00,                  /* wcChar12 */
-    ' ', 0x00,                  /* wcChar13 */
-    'D', 0x00,                  /* wcChar14 */
-    'E', 0x00,                  /* wcChar15 */
-    'M', 0x00,                  /* wcChar16 */
-    'O', 0x00,                  /* wcChar17 */
-    ///////////////////////////////////////
-    /// string3 descriptor
-    ///////////////////////////////////////
-    0x16,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    '2', 0x00,                  /* wcChar0 */
-    '0', 0x00,                  /* wcChar1 */
-    '2', 0x00,                  /* wcChar2 */
-    '2', 0x00,                  /* wcChar3 */
-    '1', 0x00,                  /* wcChar4 */
-    '2', 0x00,                  /* wcChar5 */
-    '3', 0x00,                  /* wcChar6 */
-    '4', 0x00,                  /* wcChar7 */
-    '5', 0x00,                  /* wcChar8 */
-    '6', 0x00,                  /* wcChar9 */
-#ifdef CONFIG_USB_HS
-    ///////////////////////////////////////
-    /// device qualifier descriptor
-    ///////////////////////////////////////
-    0x0a,
-    USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER,
-    0x00,
-    0x02,
-    0x00,
-    0x00,
-    0x00,
-    0x40,
-    0x00,
-    0x00,
-#endif
-    0x00
-};
-#endif

 /*!< hid mouse report descriptor */
 static const uint8_t hid_mouse_report_desc[HID_MOUSE_REPORT_DESC_SIZE] = {
@@ -339,11 +257,8 @@ struct usbd_interface intf3;

 void cdc_acm_hid_msc_descriptor_init(uint8_t busid, uintptr_t reg_base)
 {
-#ifdef CONFIG_USBDEV_ADVANCE_DESC
    usbd_desc_register(busid, &cdc_acm_hid_msc_descriptor);
-#else
-    usbd_desc_register(busid, cdc_acm_hid_msc_descriptor);
-#endif
+
    usbd_add_interface(busid, usbd_cdc_acm_init_intf(busid, &intf0));
    usbd_add_interface(busid, usbd_cdc_acm_init_intf(busid, &intf1));
    usbd_add_endpoint(busid, &cdc_out_ep);
--- a/demo/cdc_acm_mavlink_template.c
+++ b/demo/cdc_acm_mavlink_template.c
@@ -27,7 +27,6 @@
 #define CDC_MAX_MPS 64
 #endif

-#ifdef CONFIG_USBDEV_ADVANCE_DESC
 static const uint8_t device_descriptor[] = {
    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0xEF, 0x02, 0x01, USBD_VID, USBD_PID, 0x0100, 0x01)
 };
@@ -89,86 +88,6 @@ const struct usb_descriptor cdc_descriptor = {
    .device_quality_descriptor_callback = device_quality_descriptor_callback,
    .string_descriptor_callback = string_descriptor_callback
 };
-#else
-/*!< global descriptor */
-static const uint8_t cdc_descriptor[] = {
-    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0xEF, 0x02, 0x01, USBD_VID, USBD_PID, 0x0100, 0x01),
-    USB_CONFIG_DESCRIPTOR_INIT(USB_CONFIG_SIZE, 0x02, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
-    CDC_ACM_DESCRIPTOR_INIT(0x00, CDC_INT_EP, CDC_OUT_EP, CDC_IN_EP, CDC_MAX_MPS, 0x02),
-    ///////////////////////////////////////
-    /// string0 descriptor
-    ///////////////////////////////////////
-    USB_LANGID_INIT(USBD_LANGID_STRING),
-    ///////////////////////////////////////
-    /// string1 descriptor
-    ///////////////////////////////////////
-    0x14,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ///////////////////////////////////////
-    /// string2 descriptor
-    ///////////////////////////////////////
-    0x26,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ' ', 0x00,                  /* wcChar9 */
-    'C', 0x00,                  /* wcChar10 */
-    'D', 0x00,                  /* wcChar11 */
-    'C', 0x00,                  /* wcChar12 */
-    ' ', 0x00,                  /* wcChar13 */
-    'D', 0x00,                  /* wcChar14 */
-    'E', 0x00,                  /* wcChar15 */
-    'M', 0x00,                  /* wcChar16 */
-    'O', 0x00,                  /* wcChar17 */
-    ///////////////////////////////////////
-    /// string3 descriptor
-    ///////////////////////////////////////
-    0x16,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    '2', 0x00,                  /* wcChar0 */
-    '0', 0x00,                  /* wcChar1 */
-    '2', 0x00,                  /* wcChar2 */
-    '2', 0x00,                  /* wcChar3 */
-    '1', 0x00,                  /* wcChar4 */
-    '2', 0x00,                  /* wcChar5 */
-    '3', 0x00,                  /* wcChar6 */
-    '4', 0x00,                  /* wcChar7 */
-    '5', 0x00,                  /* wcChar8 */
-    '6', 0x00,                  /* wcChar9 */
-#ifdef CONFIG_USB_HS
-    ///////////////////////////////////////
-    /// device qualifier descriptor
-    ///////////////////////////////////////
-    0x0a,
-    USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER,
-    0x00,
-    0x02,
-    0x00,
-    0x00,
-    0x00,
-    0x40,
-    0x00,
-    0x00,
-#endif
-    0x00
-};
-#endif

 chry_ringbuffer_t usb_rx_rb;
 uint8_t usb_rx_buffer[2048];
@@ -243,11 +162,9 @@ static struct usbd_interface intf1;
 void cdc_acm_mavlink_init(uint8_t busid, uintptr_t reg_base)
 {
    chry_ringbuffer_init(&usb_rx_rb, usb_rx_buffer, sizeof(usb_rx_buffer));
-#ifdef CONFIG_USBDEV_ADVANCE_DESC
+
    usbd_desc_register(busid, &cdc_descriptor);
-#else
-    usbd_desc_register(busid, cdc_descriptor);
-#endif
+
    usbd_add_interface(busid, usbd_cdc_acm_init_intf(busid, &intf0));
    usbd_add_interface(busid, usbd_cdc_acm_init_intf(busid, &intf1));
    usbd_add_endpoint(busid, &cdc_out_ep);
--- a/demo/cdc_acm_msc_template.c
+++ b/demo/cdc_acm_msc_template.c
@@ -35,7 +35,6 @@
 #define MSC_MAX_MPS 64
 #endif

-#ifdef CONFIG_USBDEV_ADVANCE_DESC
 static const uint8_t device_descriptor[] = {
    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0xEF, 0x02, 0x01, USBD_VID, USBD_PID, 0x0100, 0x01)
 };
@@ -98,87 +97,6 @@ const struct usb_descriptor cdc_msc_descriptor = {
    .device_quality_descriptor_callback = device_quality_descriptor_callback,
    .string_descriptor_callback = string_descriptor_callback
 };
-#else
-/*!< global descriptor */
-static const uint8_t cdc_msc_descriptor[] = {
-    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0xEF, 0x02, 0x01, USBD_VID, USBD_PID, 0x0100, 0x01),
-    USB_CONFIG_DESCRIPTOR_INIT(USB_CONFIG_SIZE, 0x03, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
-    CDC_ACM_DESCRIPTOR_INIT(0x00, CDC_INT_EP, CDC_OUT_EP, CDC_IN_EP, CDC_MAX_MPS, 0x02),
-    MSC_DESCRIPTOR_INIT(0x02, MSC_OUT_EP, MSC_IN_EP, MSC_MAX_MPS, 0x00),
-    ///////////////////////////////////////
-    /// string0 descriptor
-    ///////////////////////////////////////
-    USB_LANGID_INIT(USBD_LANGID_STRING),
-    ///////////////////////////////////////
-    /// string1 descriptor
-    ///////////////////////////////////////
-    0x14,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ///////////////////////////////////////
-    /// string2 descriptor
-    ///////////////////////////////////////
-    0x26,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ' ', 0x00,                  /* wcChar9 */
-    'C', 0x00,                  /* wcChar10 */
-    '-', 0x00,                  /* wcChar11 */
-    'M', 0x00,                  /* wcChar12 */
-    ' ', 0x00,                  /* wcChar13 */
-    'D', 0x00,                  /* wcChar14 */
-    'E', 0x00,                  /* wcChar15 */
-    'M', 0x00,                  /* wcChar16 */
-    'O', 0x00,                  /* wcChar17 */
-    ///////////////////////////////////////
-    /// string3 descriptor
-    ///////////////////////////////////////
-    0x16,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    '2', 0x00,                  /* wcChar0 */
-    '0', 0x00,                  /* wcChar1 */
-    '2', 0x00,                  /* wcChar2 */
-    '2', 0x00,                  /* wcChar3 */
-    '1', 0x00,                  /* wcChar4 */
-    '2', 0x00,                  /* wcChar5 */
-    '3', 0x00,                  /* wcChar6 */
-    '4', 0x00,                  /* wcChar7 */
-    '5', 0x00,                  /* wcChar8 */
-    '6', 0x00,                  /* wcChar9 */
-#ifdef CONFIG_USB_HS
-    ///////////////////////////////////////
-    /// device qualifier descriptor
-    ///////////////////////////////////////
-    0x0a,
-    USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER,
-    0x00,
-    0x02,
-    0x00,
-    0x00,
-    0x00,
-    0x40,
-    0x00,
-    0x00,
-#endif
-    0x00
-};
-#endif

 USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t read_buffer[2048]; /* 2048 is only for test speed , please use CDC_MAX_MPS for common*/
 USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t write_buffer[2048];
@@ -249,11 +167,8 @@ struct usbd_interface intf2;

 void cdc_acm_msc_init(uint8_t busid, uintptr_t reg_base)
 {
-#ifdef CONFIG_USBDEV_ADVANCE_DESC
    usbd_desc_register(busid, &cdc_msc_descriptor);
-#else
-    usbd_desc_register(busid, cdc_msc_descriptor);
-#endif
+
    usbd_add_interface(busid, usbd_cdc_acm_init_intf(busid, &intf0));
    usbd_add_interface(busid, usbd_cdc_acm_init_intf(busid, &intf1));
    usbd_add_endpoint(busid, &cdc_out_ep);
--- a/demo/cdc_acm_multi_template.c
+++ b/demo/cdc_acm_multi_template.c
@@ -37,7 +37,6 @@
 #define CDC_MAX_MPS 64
 #endif

-#ifdef CONFIG_USBDEV_ADVANCE_DESC
 static const uint8_t device_descriptor[] = {
    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0xEF, 0x02, 0x01, USBD_VID, USBD_PID, 0x0100, 0x01)
 };
@@ -102,89 +101,6 @@ const struct usb_descriptor cdc_multi_descriptor = {
    .device_quality_descriptor_callback = device_quality_descriptor_callback,
    .string_descriptor_callback = string_descriptor_callback
 };
-#else
-/*!< global descriptor */
-static const uint8_t cdc_multi_descriptor[] = {
-    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0xEF, 0x02, 0x01, USBD_VID, USBD_PID, 0x0100, 0x01),
-    USB_CONFIG_DESCRIPTOR_INIT(USB_CONFIG_SIZE, 0x08, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
-    CDC_ACM_DESCRIPTOR_INIT(0x00, CDC_INT_EP, CDC_OUT_EP, CDC_IN_EP, CDC_MAX_MPS, 0x02),
-    CDC_ACM_DESCRIPTOR_INIT(0x02, CDC_INT_EP2, CDC_OUT_EP2, CDC_IN_EP2, CDC_MAX_MPS, 0x02),
-    CDC_ACM_DESCRIPTOR_INIT(0x04, CDC_INT_EP3, CDC_OUT_EP3, CDC_IN_EP3, CDC_MAX_MPS, 0x02),
-    CDC_ACM_DESCRIPTOR_INIT(0x06, CDC_INT_EP4, CDC_OUT_EP4, CDC_IN_EP4, CDC_MAX_MPS, 0x02),
-    ///////////////////////////////////////
-    /// string0 descriptor
-    ///////////////////////////////////////
-    USB_LANGID_INIT(USBD_LANGID_STRING),
-    ///////////////////////////////////////
-    /// string1 descriptor
-    ///////////////////////////////////////
-    0x14,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ///////////////////////////////////////
-    /// string2 descriptor
-    ///////////////////////////////////////
-    0x26,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ' ', 0x00,                  /* wcChar9 */
-    'C', 0x00,                  /* wcChar10 */
-    'D', 0x00,                  /* wcChar11 */
-    'C', 0x00,                  /* wcChar12 */
-    ' ', 0x00,                  /* wcChar13 */
-    'D', 0x00,                  /* wcChar14 */
-    'E', 0x00,                  /* wcChar15 */
-    'M', 0x00,                  /* wcChar16 */
-    'O', 0x00,                  /* wcChar17 */
-    ///////////////////////////////////////
-    /// string3 descriptor
-    ///////////////////////////////////////
-    0x16,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    '2', 0x00,                  /* wcChar0 */
-    '0', 0x00,                  /* wcChar1 */
-    '2', 0x00,                  /* wcChar2 */
-    '2', 0x00,                  /* wcChar3 */
-    '1', 0x00,                  /* wcChar4 */
-    '2', 0x00,                  /* wcChar5 */
-    '3', 0x00,                  /* wcChar6 */
-    '4', 0x00,                  /* wcChar7 */
-    '5', 0x00,                  /* wcChar8 */
-    '6', 0x00,                  /* wcChar9 */
-#ifdef CONFIG_USB_HS
-    ///////////////////////////////////////
-    /// device qualifier descriptor
-    ///////////////////////////////////////
-    0x0a,
-    USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER,
-    0x00,
-    0x02,
-    0x00,
-    0x00,
-    0x00,
-    0x40,
-    0x00,
-    0x00,
-#endif
-    0x00
-};
-#endif

 USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t read_buffer[4][2048];
 USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t write_buffer[4][2048];
@@ -292,11 +208,8 @@ struct usbd_interface intf7;

 void cdc_acm_multi_init(uint8_t busid, uintptr_t reg_base)
 {
-#ifdef CONFIG_USBDEV_ADVANCE_DESC
    usbd_desc_register(busid, &cdc_multi_descriptor);
-#else
-    usbd_desc_register(busid, cdc_multi_descriptor);
-#endif
+
    usbd_add_interface(busid, usbd_cdc_acm_init_intf(busid, &intf0));
    usbd_add_interface(busid, usbd_cdc_acm_init_intf(busid, &intf1));
    usbd_add_endpoint(busid, &cdc_out_ep1);
--- a/demo/cdc_acm_rttchardev_template.c
+++ b/demo/cdc_acm_rttchardev_template.c
@@ -25,7 +25,6 @@
 #define CDC_MAX_MPS 64
 #endif

-#ifdef CONFIG_USBDEV_ADVANCE_DESC
 static const uint8_t device_descriptor[] = {
    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0xEF, 0x02, 0x01, USBD_VID, USBD_PID, 0x0100, 0x01)
 };
@@ -87,86 +86,6 @@ const struct usb_descriptor cdc_descriptor = {
    .device_quality_descriptor_callback = device_quality_descriptor_callback,
    .string_descriptor_callback = string_descriptor_callback
 };
-#else
-/*!< global descriptor */
-static const uint8_t cdc_descriptor[] = {
-    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0xEF, 0x02, 0x01, USBD_VID, USBD_PID, 0x0100, 0x01),
-    USB_CONFIG_DESCRIPTOR_INIT(USB_CONFIG_SIZE, 0x02, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
-    CDC_ACM_DESCRIPTOR_INIT(0x00, CDC_INT_EP, CDC_OUT_EP, CDC_IN_EP, CDC_MAX_MPS, 0x02),
-    ///////////////////////////////////////
-    /// string0 descriptor
-    ///////////////////////////////////////
-    USB_LANGID_INIT(USBD_LANGID_STRING),
-    ///////////////////////////////////////
-    /// string1 descriptor
-    ///////////////////////////////////////
-    0x14,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ///////////////////////////////////////
-    /// string2 descriptor
-    ///////////////////////////////////////
-    0x26,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ' ', 0x00,                  /* wcChar9 */
-    'C', 0x00,                  /* wcChar10 */
-    'D', 0x00,                  /* wcChar11 */
-    'C', 0x00,                  /* wcChar12 */
-    ' ', 0x00,                  /* wcChar13 */
-    'D', 0x00,                  /* wcChar14 */
-    'E', 0x00,                  /* wcChar15 */
-    'M', 0x00,                  /* wcChar16 */
-    'O', 0x00,                  /* wcChar17 */
-    ///////////////////////////////////////
-    /// string3 descriptor
-    ///////////////////////////////////////
-    0x16,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    '2', 0x00,                  /* wcChar0 */
-    '0', 0x00,                  /* wcChar1 */
-    '2', 0x00,                  /* wcChar2 */
-    '2', 0x00,                  /* wcChar3 */
-    '1', 0x00,                  /* wcChar4 */
-    '2', 0x00,                  /* wcChar5 */
-    '3', 0x00,                  /* wcChar6 */
-    '4', 0x00,                  /* wcChar7 */
-    '5', 0x00,                  /* wcChar8 */
-    '6', 0x00,                  /* wcChar9 */
-#ifdef CONFIG_USB_HS
-    ///////////////////////////////////////
-    /// device qualifier descriptor
-    ///////////////////////////////////////
-    0x0a,
-    USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER,
-    0x00,
-    0x02,
-    0x00,
-    0x00,
-    0x00,
-    0x40,
-    0x00,
-    0x00,
-#endif
-    0x00
-};
-#endif

 static void usbd_event_handler(uint8_t busid, uint8_t event)
 {
@@ -198,11 +117,8 @@ extern void usbd_cdc_acm_serial_init(uint8_t busid, uint8_t in_ep, uint8_t out_e

 void cdc_acm_chardev_init(uint8_t busid, uintptr_t reg_base)
 {
-#ifdef CONFIG_USBDEV_ADVANCE_DESC
    usbd_desc_register(busid, &cdc_descriptor);
-#else
-    usbd_desc_register(busid, cdc_descriptor);
-#endif
+
    usbd_cdc_acm_serial_init(busid, CDC_IN_EP, CDC_OUT_EP);
    usbd_initialize(busid, reg_base, usbd_event_handler);
 }
--- a/demo/cdc_acm_template.c
+++ b/demo/cdc_acm_template.c
@@ -25,7 +25,6 @@
 #define CDC_MAX_MPS 64
 #endif

-#ifdef CONFIG_USBDEV_ADVANCE_DESC
 static const uint8_t device_descriptor[] = {
    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0xEF, 0x02, 0x01, USBD_VID, USBD_PID, 0x0100, 0x01)
 };
@@ -87,86 +86,6 @@ const struct usb_descriptor cdc_descriptor = {
    .device_quality_descriptor_callback = device_quality_descriptor_callback,
    .string_descriptor_callback = string_descriptor_callback
 };
-#else
-/*!< global descriptor */
-static const uint8_t cdc_descriptor[] = {
-    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0xEF, 0x02, 0x01, USBD_VID, USBD_PID, 0x0100, 0x01),
-    USB_CONFIG_DESCRIPTOR_INIT(USB_CONFIG_SIZE, 0x02, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
-    CDC_ACM_DESCRIPTOR_INIT(0x00, CDC_INT_EP, CDC_OUT_EP, CDC_IN_EP, CDC_MAX_MPS, 0x02),
-    ///////////////////////////////////////
-    /// string0 descriptor
-    ///////////////////////////////////////
-    USB_LANGID_INIT(USBD_LANGID_STRING),
-    ///////////////////////////////////////
-    /// string1 descriptor
-    ///////////////////////////////////////
-    0x14,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ///////////////////////////////////////
-    /// string2 descriptor
-    ///////////////////////////////////////
-    0x26,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ' ', 0x00,                  /* wcChar9 */
-    'C', 0x00,                  /* wcChar10 */
-    'D', 0x00,                  /* wcChar11 */
-    'C', 0x00,                  /* wcChar12 */
-    ' ', 0x00,                  /* wcChar13 */
-    'D', 0x00,                  /* wcChar14 */
-    'E', 0x00,                  /* wcChar15 */
-    'M', 0x00,                  /* wcChar16 */
-    'O', 0x00,                  /* wcChar17 */
-    ///////////////////////////////////////
-    /// string3 descriptor
-    ///////////////////////////////////////
-    0x16,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    '2', 0x00,                  /* wcChar0 */
-    '0', 0x00,                  /* wcChar1 */
-    '2', 0x00,                  /* wcChar2 */
-    '2', 0x00,                  /* wcChar3 */
-    '1', 0x00,                  /* wcChar4 */
-    '2', 0x00,                  /* wcChar5 */
-    '3', 0x00,                  /* wcChar6 */
-    '4', 0x00,                  /* wcChar7 */
-    '5', 0x00,                  /* wcChar8 */
-    '6', 0x00,                  /* wcChar9 */
-#ifdef CONFIG_USB_HS
-    ///////////////////////////////////////
-    /// device qualifier descriptor
-    ///////////////////////////////////////
-    0x0a,
-    USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER,
-    0x00,
-    0x02,
-    0x00,
-    0x00,
-    0x00,
-    0x40,
-    0x00,
-    0x00,
-#endif
-    0x00
-};
-#endif

 USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t read_buffer[2048]; /* 2048 is only for test speed , please use CDC_MAX_MPS for common*/
 USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t write_buffer[2048];
@@ -245,11 +164,8 @@ void cdc_acm_init(uint8_t busid, uintptr_t reg_base)
    memcpy(&write_buffer[0], data, 10);
    memset(&write_buffer[10], 'a', 2038);

-#ifdef CONFIG_USBDEV_ADVANCE_DESC
    usbd_desc_register(busid, &cdc_descriptor);
-#else
-    usbd_desc_register(busid, cdc_descriptor);
-#endif
+
    usbd_add_interface(busid, usbd_cdc_acm_init_intf(busid, &intf0));
    usbd_add_interface(busid, usbd_cdc_acm_init_intf(busid, &intf1));
    usbd_add_endpoint(busid, &cdc_out_ep);
--- a/demo/cdc_ecm_template.c
+++ b/demo/cdc_ecm_template.c
@@ -32,7 +32,6 @@
 /* str idx = 4 is for mac address: aa:bb:cc:dd:ee:ff*/
 #define CDC_ECM_MAC_STRING_INDEX 4

-#ifdef CONFIG_USBDEV_ADVANCE_DESC
 static const uint8_t device_descriptor[] = {
    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0xEF, 0x02, 0x01, USBD_VID, USBD_PID, 0x0100, 0x01)
 };
@@ -95,107 +94,6 @@ const struct usb_descriptor cdc_ecm_descriptor = {
    .device_quality_descriptor_callback = device_quality_descriptor_callback,
    .string_descriptor_callback = string_descriptor_callback
 };
-#else
-/*!< global descriptor */
-static const uint8_t cdc_ecm_descriptor[] = {
-    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0xEF, 0x02, 0x01, USBD_VID, USBD_PID, 0x0100, 0x01),
-    USB_CONFIG_DESCRIPTOR_INIT(USB_CONFIG_SIZE, 0x02, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
-    CDC_ECM_DESCRIPTOR_INIT(0x00, CDC_INT_EP, CDC_OUT_EP, CDC_IN_EP, CDC_MAX_MPS, CDC_ECM_MAC_STRING_INDEX),
-    ///////////////////////////////////////
-    /// string0 descriptor
-    ///////////////////////////////////////
-    USB_LANGID_INIT(USBD_LANGID_STRING),
-    ///////////////////////////////////////
-    /// string1 descriptor
-    ///////////////////////////////////////
-    0x14,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ///////////////////////////////////////
-    /// string2 descriptor
-    ///////////////////////////////////////
-    0x2E,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ' ', 0x00,                  /* wcChar9 */
-    'C', 0x00,                  /* wcChar10 */
-    'D', 0x00,                  /* wcChar11 */
-    'C', 0x00,                  /* wcChar12 */
-    ' ', 0x00,                  /* wcChar13 */
-    'E', 0x00,                  /* wcChar14 */
-    'C', 0x00,                  /* wcChar15 */
-    'M', 0x00,                  /* wcChar16 */
-    ' ', 0x00,                  /* wcChar17 */
-    'D', 0x00,                  /* wcChar18 */
-    'E', 0x00,                  /* wcChar19 */
-    'M', 0x00,                  /* wcChar20 */
-    'O', 0x00,                  /* wcChar21 */
-    ///////////////////////////////////////
-    /// string3 descriptor
-    ///////////////////////////////////////
-    0x16,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    '2', 0x00,                  /* wcChar0 */
-    '0', 0x00,                  /* wcChar1 */
-    '2', 0x00,                  /* wcChar2 */
-    '2', 0x00,                  /* wcChar3 */
-    '1', 0x00,                  /* wcChar4 */
-    '2', 0x00,                  /* wcChar5 */
-    '3', 0x00,                  /* wcChar6 */
-    '4', 0x00,                  /* wcChar7 */
-    '5', 0x00,                  /* wcChar8 */
-    '6', 0x00,                  /* wcChar9 */
-    ///////////////////////////////////////
-    /// string4 descriptor
-    ///////////////////////////////////////
-    0x1A,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'a', 0x00,                  /* wcChar0 */
-    'a', 0x00,                  /* wcChar1 */
-    'b', 0x00,                  /* wcChar2 */
-    'b', 0x00,                  /* wcChar3 */
-    'c', 0x00,                  /* wcChar4 */
-    'c', 0x00,                  /* wcChar5 */
-    'd', 0x00,                  /* wcChar6 */
-    'd', 0x00,                  /* wcChar7 */
-    'e', 0x00,                  /* wcChar8 */
-    'e', 0x00,                  /* wcChar9 */
-    'f', 0x00,                  /* wcChar10 */
-    'f', 0x00,                  /* wcChar11 */
-#ifdef CONFIG_USB_HS
-    ///////////////////////////////////////
-    /// device qualifier descriptor
-    ///////////////////////////////////////
-    0x0a,
-    USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER,
-    0x00,
-    0x02,
-    0x00,
-    0x00,
-    0x00,
-    0x40,
-    0x00,
-    0x00,
-#endif
-    0x00
-};
-#endif

 const uint8_t mac[6] = { 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff };

@@ -459,11 +357,8 @@ void cdc_ecm_init(uint8_t busid, uintptr_t reg_base)
 {
    cdc_ecm_lwip_init();

-#ifdef CONFIG_USBDEV_ADVANCE_DESC
    usbd_desc_register(busid, &cdc_ecm_descriptor);
-#else
-    usbd_desc_register(busid, cdc_ecm_descriptor);
-#endif
+
    usbd_add_interface(busid, usbd_cdc_ecm_init_intf(&intf0, CDC_INT_EP, CDC_OUT_EP, CDC_IN_EP));
    usbd_add_interface(busid, usbd_cdc_ecm_init_intf(&intf1, CDC_INT_EP, CDC_OUT_EP, CDC_IN_EP));
    usbd_initialize(busid, reg_base, usbd_event_handler);
--- a/demo/cdc_rndis_template.c
+++ b/demo/cdc_rndis_template.c
@@ -29,7 +29,6 @@
 #define CDC_MAX_MPS 64
 #endif

-#ifdef CONFIG_USBDEV_ADVANCE_DESC
 static const uint8_t device_descriptor[] = {
    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0xEF, 0x02, 0x01, USBD_VID, USBD_PID, 0x0100, 0x01)
 };
@@ -91,88 +90,6 @@ const struct usb_descriptor cdc_rndis_descriptor = {
    .device_quality_descriptor_callback = device_quality_descriptor_callback,
    .string_descriptor_callback = string_descriptor_callback
 };
-#else
-/*!< global descriptor */
-static const uint8_t cdc_rndis_descriptor[] = {
-    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0xEF, 0x02, 0x01, USBD_VID, USBD_PID, 0x0100, 0x01),
-    USB_CONFIG_DESCRIPTOR_INIT(USB_CONFIG_SIZE, 0x02, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
-    CDC_RNDIS_DESCRIPTOR_INIT(0x00, CDC_INT_EP, CDC_OUT_EP, CDC_IN_EP, CDC_MAX_MPS, 0x02),
-    ///////////////////////////////////////
-    /// string0 descriptor
-    ///////////////////////////////////////
-    USB_LANGID_INIT(USBD_LANGID_STRING),
-    ///////////////////////////////////////
-    /// string1 descriptor
-    ///////////////////////////////////////
-    0x14,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ///////////////////////////////////////
-    /// string2 descriptor
-    ///////////////////////////////////////
-    0x2A,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ' ', 0x00,                  /* wcChar9 */
-    'R', 0x00,                  /* wcChar10 */
-    'N', 0x00,                  /* wcChar11 */
-    'D', 0x00,                  /* wcChar12 */
-    'I', 0x00,                  /* wcChar13 */
-    'S', 0x00,                  /* wcChar14 */
-    ' ', 0x00,                  /* wcChar15 */
-    'D', 0x00,                  /* wcChar16 */
-    'E', 0x00,                  /* wcChar17 */
-    'M', 0x00,                  /* wcChar18 */
-    'O', 0x00,                  /* wcChar19 */
-    ///////////////////////////////////////
-    /// string3 descriptor
-    ///////////////////////////////////////
-    0x16,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    '2', 0x00,                  /* wcChar0 */
-    '0', 0x00,                  /* wcChar1 */
-    '2', 0x00,                  /* wcChar2 */
-    '2', 0x00,                  /* wcChar3 */
-    '1', 0x00,                  /* wcChar4 */
-    '2', 0x00,                  /* wcChar5 */
-    '3', 0x00,                  /* wcChar6 */
-    '4', 0x00,                  /* wcChar7 */
-    '5', 0x00,                  /* wcChar8 */
-    '6', 0x00,                  /* wcChar9 */
-#ifdef CONFIG_USB_HS
-    ///////////////////////////////////////
-    /// device qualifier descriptor
-    ///////////////////////////////////////
-    0x0a,
-    USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER,
-    0x00,
-    0x02,
-    0x00,
-    0x00,
-    0x00,
-    0x40,
-    0x00,
-    0x00,
-#endif
-    0x00
-};
-#endif

 const uint8_t mac[6] = { 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff };

@@ -438,11 +355,8 @@ void cdc_rndis_init(uint8_t busid, uintptr_t reg_base)
 {
    rndis_lwip_init();

-#ifdef CONFIG_USBDEV_ADVANCE_DESC
    usbd_desc_register(busid, &cdc_rndis_descriptor);
-#else
-    usbd_desc_register(busid, cdc_rndis_descriptor);
-#endif
+
    usbd_add_interface(busid, usbd_rndis_init_intf(&intf0, CDC_OUT_EP, CDC_IN_EP, CDC_INT_EP, (uint8_t *)mac));
    usbd_add_interface(busid, usbd_rndis_init_intf(&intf1, CDC_OUT_EP, CDC_IN_EP, CDC_INT_EP, (uint8_t *)mac));
    usbd_initialize(busid, reg_base, usbd_event_handler);
--- a/demo/dfu_with_st_tool_template.c
+++ b/demo/dfu_with_st_tool_template.c
@@ -15,7 +15,6 @@

 #define USB_CONFIG_SIZE (9 + 9 + 9)

-#ifdef CONFIG_USBDEV_ADVANCE_DESC
 static const uint8_t device_descriptor[] = {
    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0x00, 0x00, 0x00, USBD_VID, USBD_PID, 0x0200, 0x01)
 };
@@ -77,134 +76,6 @@ const struct usb_descriptor dfu_flash_descriptor = {
    .device_quality_descriptor_callback = device_quality_descriptor_callback,
    .string_descriptor_callback = string_descriptor_callback
 };
-#else
-const uint8_t dfu_flash_descriptor[] = {
-    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0x00, 0x00, 0x00, USBD_VID, USBD_PID, 0x0200, 0x01),
-    USB_CONFIG_DESCRIPTOR_INIT(USB_CONFIG_SIZE, 0x01, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
-    DFU_DESCRIPTOR_INIT(),
-    ///////////////////////////////////////
-    /// string0 descriptor
-    ///////////////////////////////////////
-    USB_LANGID_INIT(USBD_LANGID_STRING),
-    ///////////////////////////////////////
-    /// string1 descriptor
-    ///////////////////////////////////////
-    0x14,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ///////////////////////////////////////
-    /// string2 descriptor
-    ///////////////////////////////////////
-    0x1e,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'D', 0x00,                  /* wcChar0 */
-    'F', 0x00,                  /* wcChar1 */
-    'U', 0x00,                  /* wcChar2 */
-    'W', 0x00,                  /* wcChar3 */
-    'i', 0x00,                  /* wcChar4 */
-    't', 0x00,                  /* wcChar5 */
-    'h', 0x00,                  /* wcChar6 */
-    's', 0x00,                  /* wcChar7 */
-    't', 0x00,                  /* wcChar8 */
-    ' ', 0x00,                  /* wcChar9 */
-    't', 0x00,                  /* wcChar10 */
-    'o', 0x00,                  /* wcChar11 */
-    'o', 0x00,                  /* wcChar12 */
-    'l', 0x00,                  /* wcChar13 */
-    ///////////////////////////////////////
-    /// string3 descriptor
-    ///////////////////////////////////////
-    0x16,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    '2', 0x00,                  /* wcChar0 */
-    '0', 0x00,                  /* wcChar1 */
-    '2', 0x00,                  /* wcChar2 */
-    '2', 0x00,                  /* wcChar3 */
-    '1', 0x00,                  /* wcChar4 */
-    '2', 0x00,                  /* wcChar5 */
-    '3', 0x00,                  /* wcChar6 */
-    '4', 0x00,                  /* wcChar7 */
-    '5', 0x00,                  /* wcChar8 */
-    '6', 0x00,                  /* wcChar9 */
-    ///////////////////////////////////////
-    /// string4 descriptor
-    ///////////////////////////////////////
-    0x60,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    '@', 0x00,                  /* wcChar0 */
-    'I', 0x00,                  /* wcChar1 */
-    'n', 0x00,                  /* wcChar2 */
-    't', 0x00,                  /* wcChar3 */
-    'e', 0x00,                  /* wcChar4 */
-    'r', 0x00,                  /* wcChar5 */
-    'n', 0x00,                  /* wcChar6 */
-    'a', 0x00,                  /* wcChar7 */
-    'l', 0x00,                  /* wcChar8 */
-    ' ', 0x00,                  /* wcChar9 */
-    'F', 0x00,                  /* wcChar10 */
-    'l', 0x00,                  /* wcChar11*/
-    'a', 0x00,                  /* wcChar12 */
-    's', 0x00,                  /* wcChar13 */
-    'h', 0x00,                  /* wcChar14 */
-    ' ', 0x00,                  /* wcChar15 */
-    ' ', 0x00,                  /* wcChar16 */
-    ' ', 0x00,                  /* wcChar17 */
-    '/', 0x00,                  /* wcChar18 */
-    '0', 0x00,                  /* wcChar19 */
-    'x', 0x00,                  /* wcChar20 */
-    '0', 0x00,                  /* wcChar21*/
-    '8', 0x00,                  /* wcChar22 */
-    '0', 0x00,                  /* wcChar23 */
-    '0', 0x00,                  /* wcChar24 */
-    '0', 0x00,                  /* wcChar25 */
-    '0', 0x00,                  /* wcChar26 */
-    '0', 0x00,                  /* wcChar27 */
-    '0', 0x00,                  /* wcChar28 */
-    '/', 0x00,                  /* wcChar29 */
-    '1', 0x00,                  /* wcChar30 */
-    '6', 0x00,                  /* wcChar31*/
-    '*', 0x00,                  /* wcChar32 */
-    '0', 0x00,                  /* wcChar33 */
-    '0', 0x00,                  /* wcChar34 */
-    '1', 0x00,                  /* wcChar35 */
-    'K', 0x00,                  /* wcChar36 */
-    'a', 0x00,                  /* wcChar37 */
-    ',', 0x00,                  /* wcChar38 */
-    '1', 0x00,                  /* wcChar39 */
-    '1', 0x00,                  /* wcChar40 */
-    '2', 0x00,                  /* wcChar41*/
-    '*', 0x00,                  /* wcChar42 */
-    '0', 0x00,                  /* wcChar43 */
-    '1', 0x00,                  /* wcChar44 */
-    'K', 0x00,                  /* wcChar45 */
-    'g', 0x00,                  /* wcChar46 */
-
-#ifdef CONFIG_USB_HS
-    ///////////////////////////////////////
-    /// device qualifier descriptor
-    ///////////////////////////////////////
-    0x0a,
-    USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER,
-    0x00,
-    0x02,
-    0x00,
-    0x00,
-    0x00,
-    0x40,
-    0x00,
-    0x00,
-#endif
-    0x00
-};
-#endif

 static void usbd_event_handler(uint8_t busid, uint8_t event)
 {
@@ -235,11 +106,8 @@ struct usbd_interface intf0;

 void dfu_flash_init(uint8_t busid, uintptr_t reg_base)
 {
-#ifdef CONFIG_USBDEV_ADVANCE_DESC
    usbd_desc_register(busid, &dfu_flash_descriptor);
-#else
-    usbd_desc_register(busid, dfu_flash_descriptor);
-#endif
+
    usbd_add_interface(busid, usbd_dfu_init_intf(&intf0));
    usbd_initialize(busid, reg_base, usbd_event_handler);
 }
--- a/demo/gamepad_template.c
+++ b/demo/gamepad_template.c
@@ -0,0 +1,250 @@
+/*
+ * Copyright (c) 2026, sakumisu
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#include "usbd_core.h"
+#include "usbd_gamepad.h"
+
+#define GAMEPAD_IN_EP  0x81
+#define GAMEPAD_OUT_EP 0x02
+
+#define USBD_MAX_POWER 500
+
+static const uint8_t xinput_device_descriptor[] = {
+    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0x00, 0x00, 0x00, XINPUT_VID, XINPUT_PID, XINPUT_BCD_DEVICE, 0x01)
+};
+
+static const uint8_t switch_device_descriptor[] = {
+    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0x00, 0x00, 0x00, SWITCH_VID, SWITCH_PID, SWITCH_BCD_DEVICE, 0x01)
+};
+
+static const uint8_t xinput_config_descriptor[] = {
+    USB_CONFIG_DESCRIPTOR_INIT((9 + XINPUT_DESCRIPTOR_LEN), 0x01, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
+    XINPUT_DESCRIPTOR_INIT(0x00, GAMEPAD_OUT_EP, GAMEPAD_IN_EP)
+};
+
+static const uint8_t switch_config_descriptor[] = {
+    USB_CONFIG_DESCRIPTOR_INIT((9 + SWITCH_DESCRIPTOR_LEN), 0x01, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
+    SWITCH_DESCRIPTOR_INIT(0x00, GAMEPAD_OUT_EP, GAMEPAD_IN_EP)
+};
+
+static const char *xinput_string_descriptors[] = {
+    (const char[]){ 0x09, 0x04 }, /* Langid */
+    "Microsoft",                  /* Manufacturer */
+    "XInput STANDARD GAMEPAD",    /* Product */
+    "1.0",                        /* Serial Number */
+};
+
+static const char *switch_string_descriptors[] = {
+    (const char[]){ 0x09, 0x04 }, /* Langid */
+    "HORI",                       /* Manufacturer */
+    "Switch Pro Controller",      /* Product */
+    "1.0",                        /* Serial Number */
+};
+
+uint8_t gamepad_mode = USBD_GAMEPAD_MODE_XINPUT;
+bool gamepad_init_flag = false;
+
+static const uint8_t *device_descriptor_callback(uint8_t speed)
+{
+    switch (gamepad_mode) {
+        case USBD_GAMEPAD_MODE_XINPUT:
+            return xinput_device_descriptor;
+        case USBD_GAMEPAD_MODE_SWITCH:
+            return switch_device_descriptor;
+        case USBD_GAMEPAD_MODE_XBOXONE:
+            break;
+        case USBD_GAMEPAD_MODE_PS4:
+            break;
+
+        default:
+            break;
+    }
+    return NULL;
+}
+
+static const uint8_t *config_descriptor_callback(uint8_t speed)
+{
+    switch (gamepad_mode) {
+        case USBD_GAMEPAD_MODE_XINPUT:
+            return xinput_config_descriptor;
+        case USBD_GAMEPAD_MODE_SWITCH:
+            return switch_config_descriptor;
+        case USBD_GAMEPAD_MODE_XBOXONE:
+            break;
+        case USBD_GAMEPAD_MODE_PS4:
+            break;
+
+        default:
+            break;
+    }
+    return NULL;
+}
+
+static const uint8_t *device_quality_descriptor_callback(uint8_t speed)
+{
+    return NULL;
+}
+
+static const char *string_descriptor_callback(uint8_t speed, uint8_t index)
+{
+    if (index > 3) {
+        return NULL;
+    }
+
+    switch (gamepad_mode) {
+        case USBD_GAMEPAD_MODE_XINPUT:
+            return xinput_string_descriptors[index];
+        case USBD_GAMEPAD_MODE_SWITCH:
+            return switch_string_descriptors[index];
+        case USBD_GAMEPAD_MODE_XBOXONE:
+            break;
+        case USBD_GAMEPAD_MODE_PS4:
+            break;
+
+        default:
+            break;
+    }
+    return NULL;
+}
+
+const struct usb_descriptor gamepad_descriptor = {
+    .device_descriptor_callback = device_descriptor_callback,
+    .config_descriptor_callback = config_descriptor_callback,
+    .device_quality_descriptor_callback = device_quality_descriptor_callback,
+    .string_descriptor_callback = string_descriptor_callback
+};
+
+USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t gamepad_read_buffer[64];
+struct usb_gamepad_report gamepad_report;
+
+#define GAMEPAD_STATE_IDLE 0
+#define GAMEPAD_STATE_BUSY 1
+
+volatile uint8_t gamepad_state = GAMEPAD_STATE_IDLE;
+
+static void usbd_event_handler(uint8_t busid, uint8_t event)
+{
+    switch (event) {
+        case USBD_EVENT_RESET:
+            break;
+        case USBD_EVENT_CONNECTED:
+            break;
+        case USBD_EVENT_DISCONNECTED:
+            break;
+        case USBD_EVENT_RESUME:
+            break;
+        case USBD_EVENT_SUSPEND:
+            break;
+        case USBD_EVENT_CONFIGURED:
+            usbd_ep_start_read(busid, GAMEPAD_OUT_EP, gamepad_read_buffer, usbd_get_ep_mps(busid, GAMEPAD_OUT_EP));
+            break;
+        case USBD_EVENT_SET_REMOTE_WAKEUP:
+            break;
+        case USBD_EVENT_CLR_REMOTE_WAKEUP:
+            break;
+
+        default:
+            break;
+    }
+}
+
+static void usbd_gamepad_int_in_callback(uint8_t busid, uint8_t ep, uint32_t nbytes)
+{
+    gamepad_state = GAMEPAD_STATE_IDLE;
+}
+
+void usbd_gamepad_int_out_callback(uint8_t busid, uint8_t ep, uint32_t nbytes)
+{
+    usbd_ep_start_read(busid, GAMEPAD_OUT_EP, gamepad_read_buffer, usbd_get_ep_mps(busid, GAMEPAD_OUT_EP));
+}
+
+/*!< endpoint call back */
+static struct usbd_endpoint gamepad_in_ep = {
+    .ep_cb = usbd_gamepad_int_in_callback,
+    .ep_addr = GAMEPAD_IN_EP
+};
+
+static struct usbd_endpoint gamepad_out_ep = {
+    .ep_cb = usbd_gamepad_int_out_callback,
+    .ep_addr = GAMEPAD_OUT_EP
+};
+
+static struct usbd_interface intf0;
+
+void gamepad_init(uint8_t busid, uintptr_t reg_base)
+{
+    if (gamepad_init_flag) {
+        return;
+    }
+
+    gamepad_init_flag = true;
+
+    usbd_desc_register(busid, &gamepad_descriptor);
+
+    switch (gamepad_mode) {
+        case USBD_GAMEPAD_MODE_XINPUT:
+            usbd_add_interface(busid, usbd_gamepad_xinput_init_intf(&intf0));
+            break;
+        case USBD_GAMEPAD_MODE_SWITCH:
+            usbd_add_interface(busid, usbd_gamepad_switch_init_intf(&intf0));
+            break;
+        case USBD_GAMEPAD_MODE_XBOXONE:
+            break;
+        case USBD_GAMEPAD_MODE_PS4:
+            break;
+
+        default:
+            break;
+    }
+
+    usbd_add_endpoint(busid, &gamepad_in_ep);
+    usbd_add_endpoint(busid, &gamepad_out_ep);
+    usbd_initialize(busid, reg_base, usbd_event_handler);
+}
+
+void gamepad_change_mode(uint8_t mode, uintptr_t reg_base)
+{
+    gamepad_mode = mode;
+
+    if (gamepad_init_flag) {
+        usbd_deinitialize(0);
+    }
+    gamepad_init_flag = false;
+    gamepad_init(0, reg_base);
+}
+
+void gamepad_test(uint8_t busid)
+{
+    static uint32_t test_counter = 0;
+
+    if (usb_device_is_configured(busid) == false) {
+        return;
+    }
+
+    gamepad_state = GAMEPAD_STATE_BUSY;
+    memset(&gamepad_report, 0, sizeof(gamepad_report));
+
+    gamepad_report.buttons = (1 << (test_counter % 18));
+
+    switch (gamepad_mode) {
+        case USBD_GAMEPAD_MODE_XINPUT:
+            usbd_gamepad_xinput_send_report(GAMEPAD_IN_EP, &gamepad_report);
+            break;
+        case USBD_GAMEPAD_MODE_SWITCH:
+            usbd_gamepad_switch_send_report(GAMEPAD_IN_EP, &gamepad_report);
+            break;
+        case USBD_GAMEPAD_MODE_XBOXONE:
+            break;
+        case USBD_GAMEPAD_MODE_PS4:
+            break;
+
+        default:
+            break;
+    }
+
+    test_counter++;
+    while (gamepad_state == GAMEPAD_STATE_BUSY) {
+    }
+}
--- a/demo/hid_custom_inout_template.c
+++ b/demo/hid_custom_inout_template.c
@@ -30,7 +30,6 @@
 #define HIDRAW_IN_INTERVAL 1
 #endif

-#ifdef CONFIG_USBDEV_ADVANCE_DESC
 static const uint8_t device_descriptor[] = {
    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0x00, 0x00, 0x00, USBD_VID, USBD_PID, 0x0002, 0x01)
 };
@@ -92,86 +91,6 @@ const struct usb_descriptor hid_descriptor = {
    .device_quality_descriptor_callback = device_quality_descriptor_callback,
    .string_descriptor_callback = string_descriptor_callback
 };
-#else
-/*!< global descriptor */
-static const uint8_t hid_descriptor[] = {
-    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0x00, 0x00, 0x00, USBD_VID, USBD_PID, 0x0002, 0x01),
-    USB_CONFIG_DESCRIPTOR_INIT(USB_CONFIG_SIZE, 0x01, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
-    HID_CUSTOM_INOUT_DESCRIPTOR_INIT(0x00, 0x01, HID_CUSTOM_REPORT_DESC_SIZE, HIDRAW_OUT_EP, HIDRAW_IN_EP, HID_MAX_MPS, HIDRAW_IN_INTERVAL),
-    /*
-     * string0 descriptor
-     */
-    USB_LANGID_INIT(USBD_LANGID_STRING),
-    /*
-     * string1 descriptor
-     */
-    0x14,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    /*
-     * string2 descriptor
-     */
-    0x26,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ' ', 0x00,                  /* wcChar9 */
-    'H', 0x00,                  /* wcChar10 */
-    'I', 0x00,                  /* wcChar11 */
-    'D', 0x00,                  /* wcChar12 */
-    ' ', 0x00,                  /* wcChar13 */
-    'D', 0x00,                  /* wcChar14 */
-    'E', 0x00,                  /* wcChar15 */
-    'M', 0x00,                  /* wcChar16 */
-    'O', 0x00,                  /* wcChar17 */
-    /*
-     * string3 descriptor
-     */
-    0x16,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    '2', 0x00,                  /* wcChar0 */
-    '0', 0x00,                  /* wcChar1 */
-    '2', 0x00,                  /* wcChar2 */
-    '2', 0x00,                  /* wcChar3 */
-    '1', 0x00,                  /* wcChar4 */
-    '2', 0x00,                  /* wcChar5 */
-    '3', 0x00,                  /* wcChar6 */
-    '4', 0x00,                  /* wcChar7 */
-    '5', 0x00,                  /* wcChar8 */
-    '6', 0x00,                  /* wcChar9 */
-#ifdef CONFIG_USB_HS
-    /*
-     * device qualifier descriptor
-     */
-    0x0a,
-    USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER,
-    0x00,
-    0x02,
-    0x00,
-    0x00,
-    0x00,
-    0x40,
-    0x00,
-    0x00,
-#endif
-    0x00
-};
-#endif

 /*!< custom hid report descriptor */
 static const uint8_t hid_custom_report_desc[HID_CUSTOM_REPORT_DESC_SIZE] = {
@@ -295,11 +214,8 @@ struct usbd_interface intf0;

 void hid_custom_init(uint8_t busid, uintptr_t reg_base)
 {
-#ifdef CONFIG_USBDEV_ADVANCE_DESC
    usbd_desc_register(busid, &hid_descriptor);
-#else
-    usbd_desc_register(busid, hid_descriptor);
-#endif
+
    usbd_add_interface(busid, usbd_hid_init_intf(busid, &intf0, hid_custom_report_desc, HID_CUSTOM_REPORT_DESC_SIZE));
    usbd_add_endpoint(busid, &custom_in_ep);
    usbd_add_endpoint(busid, &custom_out_ep);
--- a/demo/hid_keyboard_template.c
+++ b/demo/hid_keyboard_template.c
@@ -18,7 +18,6 @@
 #define USB_CONFIG_SIZE       34
 #define HID_KEYBOARD_REPORT_DESC_SIZE 63

-#ifdef CONFIG_USBDEV_ADVANCE_DESC
 static const uint8_t device_descriptor[] = {
    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0x00, 0x00, 0x00, USBD_VID, USBD_PID, 0x0002, 0x01)
 };
@@ -80,85 +79,6 @@ const struct usb_descriptor hid_descriptor = {
    .device_quality_descriptor_callback = device_quality_descriptor_callback,
    .string_descriptor_callback = string_descriptor_callback
 };
-#else
-static const uint8_t hid_descriptor[] = {
-    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0x00, 0x00, 0x00, USBD_VID, USBD_PID, 0x0002, 0x01),
-    USB_CONFIG_DESCRIPTOR_INIT(USB_CONFIG_SIZE, 0x01, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
-    HID_KEYBOARD_DESCRIPTOR_INIT(0x00, 0x01, HID_KEYBOARD_REPORT_DESC_SIZE, HID_INT_EP, HID_INT_EP_SIZE, HID_INT_EP_INTERVAL),
-    ///////////////////////////////////////
-    /// string0 descriptor
-    ///////////////////////////////////////
-    USB_LANGID_INIT(USBD_LANGID_STRING),
-    ///////////////////////////////////////
-    /// string1 descriptor
-    ///////////////////////////////////////
-    0x14,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ///////////////////////////////////////
-    /// string2 descriptor
-    ///////////////////////////////////////
-    0x26,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ' ', 0x00,                  /* wcChar9 */
-    'H', 0x00,                  /* wcChar10 */
-    'I', 0x00,                  /* wcChar11 */
-    'D', 0x00,                  /* wcChar12 */
-    ' ', 0x00,                  /* wcChar13 */
-    'D', 0x00,                  /* wcChar14 */
-    'E', 0x00,                  /* wcChar15 */
-    'M', 0x00,                  /* wcChar16 */
-    'O', 0x00,                  /* wcChar17 */
-    ///////////////////////////////////////
-    /// string3 descriptor
-    ///////////////////////////////////////
-    0x16,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    '2', 0x00,                  /* wcChar0 */
-    '0', 0x00,                  /* wcChar1 */
-    '2', 0x00,                  /* wcChar2 */
-    '2', 0x00,                  /* wcChar3 */
-    '1', 0x00,                  /* wcChar4 */
-    '2', 0x00,                  /* wcChar5 */
-    '3', 0x00,                  /* wcChar6 */
-    '4', 0x00,                  /* wcChar7 */
-    '5', 0x00,                  /* wcChar8 */
-    '6', 0x00,                  /* wcChar9 */
-#ifdef CONFIG_USB_HS
-    ///////////////////////////////////////
-    /// device qualifier descriptor
-    ///////////////////////////////////////
-    0x0a,
-    USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER,
-    0x00,
-    0x02,
-    0x00,
-    0x00,
-    0x00,
-    0x40,
-    0x00,
-    0x00,
-#endif
-    0x00
-};
-#endif

 /* USB HID device Configuration Descriptor */
 static uint8_t hid_desc[9] __ALIGN_END = {
@@ -255,11 +175,8 @@ struct usbd_interface intf0;

 void hid_keyboard_init(uint8_t busid, uintptr_t reg_base)
 {
-#ifdef CONFIG_USBDEV_ADVANCE_DESC
    usbd_desc_register(busid, &hid_descriptor);
-#else
-    usbd_desc_register(busid, hid_descriptor);
-#endif
+
    usbd_add_interface(busid, usbd_hid_init_intf(busid, &intf0, hid_keyboard_report_desc, HID_KEYBOARD_REPORT_DESC_SIZE));
    usbd_add_endpoint(busid, &hid_in_ep);

--- a/demo/hid_mouse_template.c
+++ b/demo/hid_mouse_template.c
@@ -21,7 +21,6 @@
 /*!< report descriptor size */
 #define HID_MOUSE_REPORT_DESC_SIZE 74

-#ifdef CONFIG_USBDEV_ADVANCE_DESC
 static const uint8_t device_descriptor[] = {
    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0x00, 0x00, 0x00, USBD_VID, USBD_PID, 0x0002, 0x01)
 };
@@ -83,86 +82,6 @@ const struct usb_descriptor hid_descriptor = {
    .device_quality_descriptor_callback = device_quality_descriptor_callback,
    .string_descriptor_callback = string_descriptor_callback
 };
-#else
-/*!< global descriptor */
-const uint8_t hid_descriptor[] = {
-    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0x00, 0x00, 0x00, USBD_VID, USBD_PID, 0x0002, 0x01),
-    USB_CONFIG_DESCRIPTOR_INIT(USB_CONFIG_SIZE, 0x01, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
-    HID_MOUSE_DESCRIPTOR_INIT(0x00, 0x01, HID_MOUSE_REPORT_DESC_SIZE, HID_INT_EP, HID_INT_EP_SIZE, HID_INT_EP_INTERVAL),
-    ///////////////////////////////////////
-    /// string0 descriptor
-    ///////////////////////////////////////
-    USB_LANGID_INIT(USBD_LANGID_STRING),
-    ///////////////////////////////////////
-    /// string1 descriptor
-    ///////////////////////////////////////
-    0x14,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ///////////////////////////////////////
-    /// string2 descriptor
-    ///////////////////////////////////////
-    0x26,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ' ', 0x00,                  /* wcChar9 */
-    'H', 0x00,                  /* wcChar10 */
-    'I', 0x00,                  /* wcChar11 */
-    'D', 0x00,                  /* wcChar12 */
-    ' ', 0x00,                  /* wcChar13 */
-    'D', 0x00,                  /* wcChar14 */
-    'E', 0x00,                  /* wcChar15 */
-    'M', 0x00,                  /* wcChar16 */
-    'O', 0x00,                  /* wcChar17 */
-    ///////////////////////////////////////
-    /// string3 descriptor
-    ///////////////////////////////////////
-    0x16,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    '2', 0x00,                  /* wcChar0 */
-    '0', 0x00,                  /* wcChar1 */
-    '2', 0x00,                  /* wcChar2 */
-    '2', 0x00,                  /* wcChar3 */
-    '1', 0x00,                  /* wcChar4 */
-    '2', 0x00,                  /* wcChar5 */
-    '3', 0x00,                  /* wcChar6 */
-    '4', 0x00,                  /* wcChar7 */
-    '5', 0x00,                  /* wcChar8 */
-    '6', 0x00,                  /* wcChar9 */
-#ifdef CONFIG_USB_HS
-    ///////////////////////////////////////
-    /// device qualifier descriptor
-    ///////////////////////////////////////
-    0x0a,
-    USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER,
-    0x00,
-    0x02,
-    0x00,
-    0x00,
-    0x00,
-    0x40,
-    0x00,
-    0x00,
-#endif
-    0x00
-};
-#endif

 /*!< hid mouse report descriptor */
 static const uint8_t hid_mouse_report_desc[HID_MOUSE_REPORT_DESC_SIZE] = {
@@ -273,11 +192,8 @@ struct usbd_interface intf0;

 void hid_mouse_init(uint8_t busid, uintptr_t reg_base)
 {
-#ifdef CONFIG_USBDEV_ADVANCE_DESC
    usbd_desc_register(busid, &hid_descriptor);
-#else
-    usbd_desc_register(busid, hid_descriptor);
-#endif
+
    usbd_add_interface(busid, usbd_hid_init_intf(busid, &intf0, hid_mouse_report_desc, HID_MOUSE_REPORT_DESC_SIZE));
    usbd_add_endpoint(busid, &hid_in_ep);

--- a/demo/hid_remote_wakeup_template.c
+++ b/demo/hid_remote_wakeup_template.c
@@ -21,7 +21,6 @@
 /*!< report descriptor size */
 #define HID_MOUSE_REPORT_DESC_SIZE 74

-#ifdef CONFIG_USBDEV_ADVANCE_DESC
 static const uint8_t device_descriptor[] = {
    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0x00, 0x00, 0x00, USBD_VID, USBD_PID, 0x0002, 0x01)
 };
@@ -83,86 +82,6 @@ const struct usb_descriptor hid_descriptor = {
    .device_quality_descriptor_callback = device_quality_descriptor_callback,
    .string_descriptor_callback = string_descriptor_callback
 };
-#else
-/*!< global descriptor */
-const uint8_t hid_descriptor[] = {
-    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0x00, 0x00, 0x00, USBD_VID, USBD_PID, 0x0002, 0x01),
-    USB_CONFIG_DESCRIPTOR_INIT(USB_CONFIG_SIZE, 0x01, 0x01, USB_CONFIG_REMOTE_WAKEUP | USB_CONFIG_SELF_POWERED, USBD_MAX_POWER),
-    HID_MOUSE_DESCRIPTOR_INIT(0x00, 0x01, HID_MOUSE_REPORT_DESC_SIZE, HID_INT_EP, HID_INT_EP_SIZE, HID_INT_EP_INTERVAL),
-    ///////////////////////////////////////
-    /// string0 descriptor
-    ///////////////////////////////////////
-    USB_LANGID_INIT(USBD_LANGID_STRING),
-    ///////////////////////////////////////
-    /// string1 descriptor
-    ///////////////////////////////////////
-    0x14,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ///////////////////////////////////////
-    /// string2 descriptor
-    ///////////////////////////////////////
-    0x26,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ' ', 0x00,                  /* wcChar9 */
-    'H', 0x00,                  /* wcChar10 */
-    'I', 0x00,                  /* wcChar11 */
-    'D', 0x00,                  /* wcChar12 */
-    ' ', 0x00,                  /* wcChar13 */
-    'D', 0x00,                  /* wcChar14 */
-    'E', 0x00,                  /* wcChar15 */
-    'M', 0x00,                  /* wcChar16 */
-    'O', 0x00,                  /* wcChar17 */
-    ///////////////////////////////////////
-    /// string3 descriptor
-    ///////////////////////////////////////
-    0x16,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    '2', 0x00,                  /* wcChar0 */
-    '0', 0x00,                  /* wcChar1 */
-    '2', 0x00,                  /* wcChar2 */
-    '2', 0x00,                  /* wcChar3 */
-    '1', 0x00,                  /* wcChar4 */
-    '2', 0x00,                  /* wcChar5 */
-    '3', 0x00,                  /* wcChar6 */
-    '4', 0x00,                  /* wcChar7 */
-    '5', 0x00,                  /* wcChar8 */
-    '6', 0x00,                  /* wcChar9 */
-#ifdef CONFIG_USB_HS
-    ///////////////////////////////////////
-    /// device qualifier descriptor
-    ///////////////////////////////////////
-    0x0a,
-    USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER,
-    0x00,
-    0x02,
-    0x00,
-    0x00,
-    0x00,
-    0x40,
-    0x00,
-    0x00,
-#endif
-    0x00
-};
-#endif

 /*!< hid mouse report descriptor */
 static const uint8_t hid_mouse_report_desc[HID_MOUSE_REPORT_DESC_SIZE] = {
@@ -273,11 +192,8 @@ static struct usbd_interface intf0;

 void hid_mouse_init(uint8_t busid, uintptr_t reg_base)
 {
-#ifdef CONFIG_USBDEV_ADVANCE_DESC
    usbd_desc_register(busid, &hid_descriptor);
-#else
-    usbd_desc_register(busid, hid_descriptor);
-#endif
+
    usbd_add_interface(busid, usbd_hid_init_intf(busid, &intf0, hid_mouse_report_desc, HID_MOUSE_REPORT_DESC_SIZE));
    usbd_add_endpoint(busid, &hid_in_ep);

--- a/demo/midi_template.c
+++ b/demo/midi_template.c
@@ -28,7 +28,6 @@
 #define MIDI_EP_MPS 64
 #endif

-#ifdef CONFIG_USBDEV_ADVANCE_DESC
 static const uint8_t device_descriptor[] = {
    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0x00, 0x00, 0x00, USBD_VID, USBD_PID, 0x0100, 0x01)
 };
@@ -100,96 +99,6 @@ const struct usb_descriptor midi_descriptor = {
    .device_quality_descriptor_callback = device_quality_descriptor_callback,
    .string_descriptor_callback = string_descriptor_callback
 };
-#else
-const uint8_t midi_descriptor[] = {
-    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0x00, 0x00, 0x00, USBD_VID, USBD_PID, 0x0100, 0x01),
-    USB_CONFIG_DESCRIPTOR_INIT(USB_CONFIG_SIZE, 0x02, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
-    AUDIO_AC_DESCRIPTOR_INIT(0x00, 0x02, AUDIO_AC_SIZ, 0x00, 0x01),
-    MIDI_STANDARD_DESCRIPTOR_INIT(0x01, 0x02),
-    MIDI_CS_HEADER_DESCRIPTOR_INIT(AUDIO_MS_SIZ),
-    MIDI_JACK_DESCRIPTOR_INIT(0x01),
-    // OUT endpoint descriptor
-    0x09, 0x05, MIDI_OUT_EP, 0x02, WBVAL(MIDI_EP_MPS), 0x00, 0x00, 0x00,
-    0x05, 0x25, 0x01, 0x01, 0x01,
-
-    // IN endpoint descriptor
-    0x09, 0x05, MIDI_IN_EP, 0x02, WBVAL(MIDI_EP_MPS), 0x00, 0x00, 0x00,
-    0x05, 0x25, 0x01, 0x01, 0x03
-    ///////////////////////////////////////
-    /// string0 descriptor
-    ///////////////////////////////////////
-    USB_LANGID_INIT(USBD_LANGID_STRING),
-    ///////////////////////////////////////
-    /// string1 descriptor
-    ///////////////////////////////////////
-    0x14,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ///////////////////////////////////////
-    /// string2 descriptor
-    ///////////////////////////////////////
-    0x28,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ' ', 0x00,                  /* wcChar9 */
-    'M', 0x00,                  /* wcChar10 */
-    'I', 0x00,                  /* wcChar11 */
-    'D', 0x00,                  /* wcChar12 */
-    'I', 0x00,                  /* wcChar13 */
-    ' ', 0x00,                  /* wcChar14 */
-    'D', 0x00,                  /* wcChar15 */
-    'E', 0x00,                  /* wcChar16 */
-    'M', 0x00,                  /* wcChar17 */
-    'O', 0x00,                  /* wcChar18 */
-    ///////////////////////////////////////
-    /// string3 descriptor
-    ///////////////////////////////////////
-    0x16,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    '2', 0x00,                  /* wcChar0 */
-    '0', 0x00,                  /* wcChar1 */
-    '2', 0x00,                  /* wcChar2 */
-    '1', 0x00,                  /* wcChar3 */
-    '0', 0x00,                  /* wcChar4 */
-    '3', 0x00,                  /* wcChar5 */
-    '1', 0x00,                  /* wcChar6 */
-    '0', 0x00,                  /* wcChar7 */
-    '0', 0x00,                  /* wcChar8 */
-    '0', 0x00,                  /* wcChar9 */
-#ifdef CONFIG_USB_HS
-    ///////////////////////////////////////
-    /// device qualifier descriptor
-    ///////////////////////////////////////
-    0x0a,
-    USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER,
-    0x00,
-    0x02,
-    0x00,
-    0x00,
-    0x00,
-    0x40,
-    0x00,
-    0x00,
-#endif
-    0x00
-};
-#endif

 USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t read_buffer[MIDI_EP_MPS];
 USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t write_buffer[MIDI_EP_MPS];
@@ -244,11 +153,8 @@ struct usbd_endpoint midi_in_ep = {

 void midi_init(uint8_t busid, uintptr_t reg_base)
 {
-#ifdef CONFIG_USBDEV_ADVANCE_DESC
    usbd_desc_register(busid, &midi_descriptor);
-#else
-    usbd_desc_register(busid, midi_descriptor);
-#endif
+
    usbd_add_interface(busid, &intf0);
    usbd_add_interface(busid, &intf1);
    usbd_add_endpoint(busid, &midi_out_ep);
--- a/demo/msc_ram_template.c
+++ b/demo/msc_ram_template.c
@@ -22,7 +22,6 @@
 #define MSC_MAX_MPS 64
 #endif

-#ifdef CONFIG_USBDEV_ADVANCE_DESC
 static const uint8_t device_descriptor[] = {
    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0x00, 0x00, 0x00, USBD_VID, USBD_PID, 0x0200, 0x01)
 };
@@ -84,85 +83,6 @@ const struct usb_descriptor msc_ram_descriptor = {
    .device_quality_descriptor_callback = device_quality_descriptor_callback,
    .string_descriptor_callback = string_descriptor_callback
 };
-#else
-const uint8_t msc_ram_descriptor[] = {
-    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0x00, 0x00, 0x00, USBD_VID, USBD_PID, 0x0200, 0x01),
-    USB_CONFIG_DESCRIPTOR_INIT(USB_CONFIG_SIZE, 0x01, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
-    MSC_DESCRIPTOR_INIT(0x00, MSC_OUT_EP, MSC_IN_EP, MSC_MAX_MPS, 0x02),
-    ///////////////////////////////////////
-    /// string0 descriptor
-    ///////////////////////////////////////
-    USB_LANGID_INIT(USBD_LANGID_STRING),
-    ///////////////////////////////////////
-    /// string1 descriptor
-    ///////////////////////////////////////
-    0x14,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ///////////////////////////////////////
-    /// string2 descriptor
-    ///////////////////////////////////////
-    0x26,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ' ', 0x00,                  /* wcChar9 */
-    'M', 0x00,                  /* wcChar10 */
-    'S', 0x00,                  /* wcChar11 */
-    'C', 0x00,                  /* wcChar12 */
-    ' ', 0x00,                  /* wcChar13 */
-    'D', 0x00,                  /* wcChar14 */
-    'E', 0x00,                  /* wcChar15 */
-    'M', 0x00,                  /* wcChar16 */
-    'O', 0x00,                  /* wcChar17 */
-    ///////////////////////////////////////
-    /// string3 descriptor
-    ///////////////////////////////////////
-    0x16,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    '2', 0x00,                  /* wcChar0 */
-    '0', 0x00,                  /* wcChar1 */
-    '2', 0x00,                  /* wcChar2 */
-    '2', 0x00,                  /* wcChar3 */
-    '1', 0x00,                  /* wcChar4 */
-    '2', 0x00,                  /* wcChar5 */
-    '3', 0x00,                  /* wcChar6 */
-    '4', 0x00,                  /* wcChar7 */
-    '5', 0x00,                  /* wcChar8 */
-    '6', 0x00,                  /* wcChar9 */
-#ifdef CONFIG_USB_HS
-    ///////////////////////////////////////
-    /// device qualifier descriptor
-    ///////////////////////////////////////
-    0x0a,
-    USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER,
-    0x00,
-    0x02,
-    0x00,
-    0x00,
-    0x00,
-    0x40,
-    0x00,
-    0x00,
-#endif
-    0x00
-};
-#endif

 static void usbd_event_handler(uint8_t busid, uint8_t event)
 {
@@ -267,11 +187,8 @@ void msc_ram_init(uint8_t busid, uintptr_t reg_base)
    res = rt_device_open(blk_dev, RT_DEVICE_OFLAG_RDWR);
    RT_ASSERT(res == RT_EOK);
 #endif
-#ifdef CONFIG_USBDEV_ADVANCE_DESC
    usbd_desc_register(busid, &msc_ram_descriptor);
-#else
-    usbd_desc_register(busid, msc_ram_descriptor);
-#endif
+
    usbd_add_interface(busid, usbd_msc_init_intf(busid, &intf0, MSC_OUT_EP, MSC_IN_EP));

    usbd_initialize(busid, reg_base, usbd_event_handler);
--- a/demo/usb_host.c
+++ b/demo/usb_host.c
@@ -4,79 +4,73 @@
 * SPDX-License-Identifier: Apache-2.0
 */
 #include "usbh_core.h"
-#include "usbh_cdc_acm.h"
+#include "usbh_serial.h"
 #include "usbh_hid.h"
 #include "usbh_msc.h"
-#include "usbh_video.h"
-#include "usbh_audio.h"

-#ifndef CONFIG_TEST_USBH_CDC_ACM
-#define CONFIG_TEST_USBH_CDC_ACM 1
-#endif
-#ifndef TEST_USBH_CDC_SPEED
-#define TEST_USBH_CDC_SPEED 0
-#endif
-#ifndef CONFIG_TEST_USBH_HID
-#define CONFIG_TEST_USBH_HID 1
-#endif
-#ifndef CONFIG_TEST_USBH_MSC
-#define CONFIG_TEST_USBH_MSC 1
-#endif
-#ifndef TEST_USBH_MSC_FATFS
-#define TEST_USBH_MSC_FATFS 0
-#endif
-#ifndef TEST_USBH_MSC_FATFS_SPEED
-#define TEST_USBH_MSC_FATFS_SPEED 0
-#endif
-#ifndef CONFIG_TEST_USBH_AUDIO
-#define CONFIG_TEST_USBH_AUDIO 0
-#endif
-#ifndef CONFIG_TEST_USBH_VIDEO
-#define CONFIG_TEST_USBH_VIDEO 0
+// net class demos use socket api
+
+#ifdef CONFIG_TEST_USBH_SERIAL
+#define SERIAL_TEST_LEN (1 * 1024)
+
+#if SERIAL_TEST_LEN >= CONFIG_USBHOST_SERIAL_RX_SIZE
+#error SERIAL_TEST_LEN is larger than CONFIG_USBHOST_SERIAL_RX_SIZE, please reduce SERIAL_TEST_LEN or increase CONFIG_USBHOST_SERIAL_RX_SIZE
 #endif

-#if defined(TEST_USBH_CDC_ECM) || defined(TEST_USBH_CDC_RNDIS) || defined(TEST_USBH_ASIX) || defined(TEST_USBH_RTL8152)
-#error we have move those class implements into platform/none/usbh_lwip.c, and you should call tcpip_init(NULL, NULL) in your app
-#endif
+volatile uint32_t serial_tx_bytes = 0;
+volatile uint32_t serial_rx_bytes = 0;
+volatile bool serial_is_opened = false;

-#if CONFIG_TEST_USBH_CDC_ACM
-USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t cdc_buffer[4096];
+USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t serial_tx_buffer[SERIAL_TEST_LEN];
+uint8_t serial_rx_data[SERIAL_TEST_LEN];

-#if TEST_USBH_CDC_SPEED
+#ifdef CONFIG_TEST_USBH_CDC_SPEED
 #define TEST_LEN   (16 * 1024)
 #define TEST_COUNT (10240)

-USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t cdc_speed_buffer[TEST_LEN];
+USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t serial_speed_buffer[TEST_LEN];
 #endif

-void usbh_cdc_acm_callback(void *arg, int nbytes)
-{
-    //struct usbh_cdc_acm *cdc_acm_class = (struct usbh_cdc_acm *)arg;
-
-    if (nbytes > 0) {
-        for (size_t i = 0; i < nbytes; i++) {
-            USB_LOG_RAW("0x%02x ", cdc_buffer[i]);
-        }
-        USB_LOG_RAW("nbytes:%d\r\n", (unsigned int)nbytes);
-    }
-}
-
-static void usbh_cdc_acm_thread(CONFIG_USB_OSAL_THREAD_SET_ARGV)
+static void usbh_serial_thread(CONFIG_USB_OSAL_THREAD_SET_ARGV)
 {
    int ret;
-    struct usbh_cdc_acm *cdc_acm_class = (struct usbh_cdc_acm *)CONFIG_USB_OSAL_THREAD_GET_ARGV;
+    struct usbh_serial *serial;
+    bool serial_test_success = false;
+
+    serial = usbh_serial_open("/dev/ttyACM0", USBH_SERIAL_O_RDWR | USBH_SERIAL_O_NONBLOCK);
+    if (serial == NULL) {
+        serial = usbh_serial_open("/dev/ttyUSB0", USBH_SERIAL_O_RDWR | USBH_SERIAL_O_NONBLOCK);
+        if (serial == NULL) {
+            USB_LOG_RAW("no serial device found\r\n");
+            goto delete;
+        }
+    }
+
+    struct usbh_serial_termios termios;
+
+    memset(&termios, 0, sizeof(termios));
+    termios.baudrate = 115200;
+    termios.stopbits = 0;
+    termios.parity = 0;
+    termios.databits = 8;
+    termios.rtscts = false;
+    termios.rx_timeout = 0;
+    ret = usbh_serial_control(serial, USBH_SERIAL_CMD_SET_ATTR, &termios);
+    if (ret < 0) {
+        USB_LOG_RAW("set serial attr error, ret:%d\r\n", ret);
+        goto delete_with_close;
+    }

    /* test with only one buffer, if you have more cdc acm class, modify by yourself */
-#if TEST_USBH_CDC_SPEED
+#ifdef CONFIG_TEST_USBH_CDC_SPEED
    const uint32_t test_len[] = { 512, 1 * 1024, 2 * 1024, 4 * 1024, 8 * 1024, 16 * 1024 };

-    memset(cdc_speed_buffer, 0xAA, TEST_LEN);
+    memset(serial_speed_buffer, 0xAA, TEST_LEN);

    for (uint8_t j = 0; j < 6; j++) {
        uint32_t start_time = (uint32_t)xTaskGetTickCount();
        for (uint32_t i = 0; i < TEST_COUNT; i++) {
-            usbh_bulk_urb_fill(&cdc_acm_class->bulkout_urb, cdc_acm_class->hport, cdc_acm_class->bulkout, cdc_speed_buffer, test_len[j], 0XFFFFFFF, NULL, NULL);
-            ret = usbh_submit_urb(&cdc_acm_class->bulkout_urb);
+            usbh_serial_write(serial, serial_speed_buffer, test_len[j]);
            if (ret < 0) {
                USB_LOG_RAW("bulk out error,ret:%d\r\n", ret);
                while (1) {
@@ -87,35 +81,75 @@ static void usbh_cdc_acm_thread(CONFIG_USB_OSAL_THREAD_SET_ARGV)
        uint32_t time_ms = xTaskGetTickCount() - start_time;
        USB_LOG_RAW("per packet len:%d, out speed:%f MB/S\r\n", (unsigned int)test_len[j], (test_len[j] * TEST_COUNT / 1024 / 1024) * 1000 / ((float)time_ms));
    }
+    usbh_serial_close(serial);
+    goto delete;
 #endif
-    memset(cdc_buffer, 0x55, 4096);
+    memset(serial_tx_buffer, 0xA5, sizeof(serial_tx_buffer));
+    USB_LOG_RAW("start serial loopback test, len: %d\r\n", SERIAL_TEST_LEN);

-    /* for common, we use timeout with 0xffffffff, this is just a test */
-    usbh_bulk_urb_fill(&cdc_acm_class->bulkout_urb, cdc_acm_class->hport, cdc_acm_class->bulkout, cdc_buffer, sizeof(cdc_buffer), 3000, NULL, NULL);
-    ret = usbh_submit_urb(&cdc_acm_class->bulkout_urb);
-    if (ret < 0) {
-        USB_LOG_RAW("bulk out error,ret:%d\r\n", ret);
-        goto delete;
-    } else {
-        USB_LOG_RAW("send over:%d\r\n", (unsigned int)cdc_acm_class->bulkout_urb.actual_length);
+    serial_tx_bytes = 0;
+    while (1) {
+        ret = usbh_serial_write(serial, serial_tx_buffer, sizeof(serial_tx_buffer));
+        if (ret < 0) {
+            USB_LOG_RAW("serial write error, ret:%d\r\n", ret);
+            goto delete_with_close;
+        } else {
+            serial_tx_bytes += ret;
+
+            if (serial_tx_bytes == SERIAL_TEST_LEN) {
+                USB_LOG_RAW("send over\r\n");
+                break;
+            }
+        }
    }

-    /* we can change cdc_acm_class->bulkin->wMaxPacketSize with 4096 for testing zlp, default is ep mps  */
-    usbh_bulk_urb_fill(&cdc_acm_class->bulkin_urb, cdc_acm_class->hport, cdc_acm_class->bulkin, cdc_buffer, cdc_acm_class->bulkin->wMaxPacketSize, 0xffffffff, usbh_cdc_acm_callback, cdc_acm_class);
-    ret = usbh_submit_urb(&cdc_acm_class->bulkin_urb);
-    if (ret < 0) {
-        USB_LOG_RAW("bulk in error,ret:%d\r\n", ret);
-        goto delete;
-    } else {
+    volatile uint32_t wait_timeout = 0;
+    serial_rx_bytes = 0;
+    while (1) {
+        ret = usbh_serial_read(serial, &serial_rx_data[serial_rx_bytes], SERIAL_TEST_LEN - serial_rx_bytes);
+        if (ret < 0) {
+            USB_LOG_RAW("serial read error, ret:%d\r\n", ret);
+            goto delete_with_close;
+        } else {
+            serial_rx_bytes += ret;
+
+            if (serial_rx_bytes == SERIAL_TEST_LEN) {
+                USB_LOG_RAW("receive over\r\n");
+                for (uint32_t i = 0; i < SERIAL_TEST_LEN; i++) {
+                    if (serial_rx_data[i] != 0xa5) {
+                        USB_LOG_RAW("serial loopback data error at index %d, data: 0x%02x\r\n", (unsigned int)i, serial_rx_data[i]);
+                        goto delete_with_close;
+                    }
+                }
+                serial_test_success = true;
+                break;
+            }
+        }
+        wait_timeout++;
+
+        if (wait_timeout > 500) { // 5s
+            USB_LOG_RAW("serial read timeout\r\n");
+            goto delete_with_close;
+        }
+
+        usb_osal_msleep(10);
    }
+
    // clang-format off
+delete_with_close:
+    if (serial_test_success) {
+        USB_LOG_RAW("serial loopback test success\r\n");
+    } else {
+        USB_LOG_RAW("serial loopback test failed\r\n");
+    }
+    usbh_serial_close(serial);
 delete:
    usb_osal_thread_delete(NULL);
    // clang-format on
 }
 #endif

-#if CONFIG_TEST_USBH_HID
+#ifdef CONFIG_TEST_USBH_HID
 USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t hid_buffer[128];

 void usbh_hid_callback(void *arg, int nbytes)
@@ -140,7 +174,6 @@ static void usbh_hid_thread(CONFIG_USB_OSAL_THREAD_SET_ARGV)
 {
    int ret;
    struct usbh_hid *hid_class = (struct usbh_hid *)CONFIG_USB_OSAL_THREAD_GET_ARGV;
-    ;

    /* test with only one buffer, if you have more hid class, modify by yourself */

@@ -157,15 +190,15 @@ delete:
 }
 #endif

-#if CONFIG_TEST_USBH_MSC
+#ifdef CONFIG_TEST_USBH_MSC

-#if TEST_USBH_MSC_FATFS
+#ifdef CONFIG_TEST_USBH_MSC_FATFS
 #include "ff.h"

-#if TEST_USBH_MSC_FATFS_SPEED
+#ifdef CONFIG_TEST_USBH_MSC_FATFS_SPEED
 #define WRITE_SIZE_MB (128UL)
-#define WRITE_SIZE (1024UL * 1024UL * WRITE_SIZE_MB)
-#define BUF_SIZE (1024UL * 128UL)
+#define WRITE_SIZE    (1024UL * 1024UL * WRITE_SIZE_MB)
+#define BUF_SIZE      (1024UL * 128UL)
 USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t read_write_buffer[BUF_SIZE];
 #else
 USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t read_write_buffer[25 * 100];
@@ -223,7 +256,7 @@ int usb_msc_fatfs_test()
        goto unmount;
    }

-#if TEST_USBH_MSC_FATFS_SPEED
+#ifdef CONFIG_TEST_USBH_MSC_FATFS_SPEED
    for (uint32_t i = 0; i < BUF_SIZE; i++) {
        read_write_buffer[i] = i % 256;
    }
@@ -234,7 +267,7 @@ int usb_msc_fatfs_test()
        uint32_t write_size = WRITE_SIZE;
        uint32_t start_time = (uint32_t)xTaskGetTickCount();
        while (write_size > 0) {
-            res_sd = f_write(&fnew, read_write_buffer, BUF_SIZE, (UINT*)&fnum);
+            res_sd = f_write(&fnew, read_write_buffer, BUF_SIZE, (UINT *)&fnum);
            if (res_sd != FR_OK) {
                USB_LOG_RAW("Write file failed, cause: %s\n", res_sd);
                goto unmount;
@@ -260,7 +293,7 @@ int usb_msc_fatfs_test()
        uint32_t write_size = WRITE_SIZE;
        uint32_t start_time = (uint32_t)xTaskGetTickCount();
        while (write_size > 0) {
-            res_sd = f_read(&fnew, read_write_buffer, BUF_SIZE, (UINT*)&fnum);
+            res_sd = f_read(&fnew, read_write_buffer, BUF_SIZE, (UINT *)&fnum);
            if (res_sd != FR_OK) {
                USB_LOG_RAW("Read file failed, cause: %s\n", res_sd);
                goto unmount;
@@ -295,8 +328,10 @@ static void usbh_msc_thread(CONFIG_USB_OSAL_THREAD_SET_ARGV)
    int ret;
    struct usbh_msc *msc_class = (struct usbh_msc *)CONFIG_USB_OSAL_THREAD_GET_ARGV;

+    (void)msc_class;
+
    /* test with only one buffer, if you have more msc class, modify by yourself */
-#if TEST_USBH_MSC_FATFS == 0
+#ifndef TEST_USBH_MSC_FATFS
    ret = usbh_msc_scsi_init(msc_class);
    if (ret < 0) {
        USB_LOG_RAW("scsi_init error,ret:%d\r\n", ret);
@@ -326,18 +361,23 @@ delete:
 }
 #endif

-#if CONFIG_TEST_USBH_CDC_ACM
-void usbh_cdc_acm_run(struct usbh_cdc_acm *cdc_acm_class)
+#ifdef CONFIG_TEST_USBH_SERIAL
+void usbh_serial_run(struct usbh_serial *serial)
 {
-    usb_osal_thread_create("usbh_cdc", 2048, CONFIG_USBHOST_PSC_PRIO + 1, usbh_cdc_acm_thread, cdc_acm_class);
+    if (serial_is_opened) {
+        return;
+    }
+    serial_is_opened = true;
+    usb_osal_thread_create("usbh_serial", 2048, CONFIG_USBHOST_PSC_PRIO + 1, usbh_serial_thread, serial);
 }

-void usbh_cdc_acm_stop(struct usbh_cdc_acm *cdc_acm_class)
+void usbh_serial_stop(struct usbh_serial *serial)
 {
+    serial_is_opened = false;
 }
 #endif

-#if CONFIG_TEST_USBH_HID
+#ifdef CONFIG_TEST_USBH_HID
 void usbh_hid_run(struct usbh_hid *hid_class)
 {
    usb_osal_thread_create("usbh_hid", 2048, CONFIG_USBHOST_PSC_PRIO + 1, usbh_hid_thread, hid_class);
@@ -348,7 +388,7 @@ void usbh_hid_stop(struct usbh_hid *hid_class)
 }
 #endif

-#if CONFIG_TEST_USBH_MSC
+#ifdef CONFIG_TEST_USBH_MSC
 void usbh_msc_run(struct usbh_msc *msc_class)
 {
    usb_osal_thread_create("usbh_msc", 2048, CONFIG_USBHOST_PSC_PRIO + 1, usbh_msc_thread, msc_class);
@@ -359,14 +399,6 @@ void usbh_msc_stop(struct usbh_msc *msc_class)
 }
 #endif

-#if CONFIG_TEST_USBH_AUDIO
-#error "commercial charge"
-#endif
-
-#if CONFIG_TEST_USBH_VIDEO
-#error "commercial charge"
-#endif
-
 #if 0
 #include "usbh_aoa.h"

--- a/demo/video_audiov1_hid_template.c
+++ b/demo/video_audiov1_hid_template.c
@@ -103,7 +103,6 @@

 #define HID_KEYBOARD_REPORT_DESC_SIZE 63

-#ifdef CONFIG_USBDEV_ADVANCE_DESC
 static const uint8_t device_descriptor[] = {
    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0xef, 0x02, 0x01, USBD_VID, USBD_PID, 0x0001, 0x01)
 };
@@ -185,136 +184,6 @@ const struct usb_descriptor video_audio_hid_descriptor = {
    .device_quality_descriptor_callback = device_quality_descriptor_callback,
    .string_descriptor_callback = string_descriptor_callback
 };
-#else
-const uint8_t video_audio_hid_descriptor[] = {
-    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0xef, 0x02, 0x01, USBD_VID, USBD_PID, 0x0001, 0x01),
-    USB_CONFIG_DESCRIPTOR_INIT(USB_VIDEO_DESC_SIZ, 0x06, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
-    //VIDEO_VC_DESCRIPTOR_INIT(0x00, VIDEO_INT_EP, 0x0100, VIDEO_VC_TERMINAL_LEN, 48000000, 0x02),
-    VIDEO_VC_NOEP_DESCRIPTOR_INIT(0x00, VIDEO_INT_EP, 0x0100, VIDEO_VC_TERMINAL_LEN, 48000000, 0x02),
-    VIDEO_VS_DESCRIPTOR_INIT(0x01, 0x00, 0x00),
-    VIDEO_VS_INPUT_HEADER_DESCRIPTOR_INIT(0x01, VS_HEADER_SIZ, VIDEO_IN_EP, 0x00),
-    VIDEO_VS_FORMAT_MJPEG_DESCRIPTOR_INIT(0x01, 0x01),
-    VIDEO_VS_FRAME_MJPEG_DESCRIPTOR_INIT(0x01, WIDTH, HEIGHT, MIN_BIT_RATE, MAX_BIT_RATE, MAX_FRAME_SIZE, DBVAL(INTERVAL), 0x01, DBVAL(INTERVAL)),
-    VIDEO_VS_DESCRIPTOR_INIT(0x01, 0x01, 0x01),
-    /* 1.2.2.2 Standard VideoStream Isochronous Video Data Endpoint Descriptor */
-    USB_ENDPOINT_DESCRIPTOR_INIT(VIDEO_IN_EP, 0x05, VIDEO_PACKET_SIZE, 0x01),
-    AUDIO_AC_DESCRIPTOR_INIT(0x02, 0x03, AUDIO_AC_SIZ, 0x00, 0x03, 0x04),
-    AUDIO_AC_INPUT_TERMINAL_DESCRIPTOR_INIT(0x01, AUDIO_INTERM_MIC, 0x02, 0x0003),
-    AUDIO_AC_FEATURE_UNIT_DESCRIPTOR_INIT(0x02, 0x01, 0x01, 0x03, 0x00, 0x00),
-    AUDIO_AC_OUTPUT_TERMINAL_DESCRIPTOR_INIT(0x03, AUDIO_TERMINAL_STREAMING, 0x02),
-    AUDIO_AC_INPUT_TERMINAL_DESCRIPTOR_INIT(0x04, AUDIO_TERMINAL_STREAMING, 0x02, 0x0003),
-    AUDIO_AC_FEATURE_UNIT_DESCRIPTOR_INIT(0x05, 0x04, 0x01, 0x03, 0x00, 0x00),
-    AUDIO_AC_OUTPUT_TERMINAL_DESCRIPTOR_INIT(0x06, AUDIO_OUTTERM_SPEAKER, 0x05),
-    AUDIO_AS_DESCRIPTOR_INIT(0x03, 0x04, 0x02, AUDIO_SPEAKER_FRAME_SIZE_BYTE, AUDIO_SPEAKER_RESOLUTION_BIT, AUDIO_OUT_EP, 0x09, AUDIO_OUT_PACKET,
-                             EP_INTERVAL, AUDIO_SAMPLE_FREQ_3B(AUDIO_SPEAKER_FREQ)),
-    AUDIO_AS_DESCRIPTOR_INIT(0x04, 0x03, 0x02, AUDIO_MIC_FRAME_SIZE_BYTE, AUDIO_MIC_RESOLUTION_BIT, AUDIO_IN_EP, 0x05, AUDIO_IN_PACKET,
-                             EP_INTERVAL, AUDIO_SAMPLE_FREQ_3B(AUDIO_MIC_FREQ)),
-    /************** Descriptor of Joystick Mouse interface ****************/
-    /* 09 */
-    0x09,                          /* bLength: Interface Descriptor size */
-    USB_DESCRIPTOR_TYPE_INTERFACE, /* bDescriptorType: Interface descriptor type */
-    0x05,                          /* bInterfaceNumber: Number of Interface */
-    0x00,                          /* bAlternateSetting: Alternate setting */
-    0x01,                          /* bNumEndpoints */
-    0x03,                          /* bInterfaceClass: HID */
-    0x01,                          /* bInterfaceSubClass : 1=BOOT, 0=no boot */
-    0x01,                          /* nInterfaceProtocol : 0=none, 1=keyboard, 2=mouse */
-    0,                             /* iInterface: Index of string descriptor */
-    /******************** Descriptor of Joystick Mouse HID ********************/
-    /* 18 */
-    0x09,                    /* bLength: HID Descriptor size */
-    HID_DESCRIPTOR_TYPE_HID, /* bDescriptorType: HID */
-    0x11,                    /* bcdHID: HID Class Spec release number */
-    0x01,
-    0x00,                          /* bCountryCode: Hardware target country */
-    0x01,                          /* bNumDescriptors: Number of HID class descriptors to follow */
-    0x22,                          /* bDescriptorType */
-    HID_KEYBOARD_REPORT_DESC_SIZE, /* wItemLength: Total length of Report descriptor */
-    0x00,
-    /******************** Descriptor of Mouse endpoint ********************/
-    /* 27 */
-    0x07,                         /* bLength: Endpoint Descriptor size */
-    USB_DESCRIPTOR_TYPE_ENDPOINT, /* bDescriptorType: */
-    HID_INT_EP,                   /* bEndpointAddress: Endpoint Address (IN) */
-    0x03,                         /* bmAttributes: Interrupt endpoint */
-    HID_INT_EP_SIZE,              /* wMaxPacketSize: 4 Byte max */
-    0x00,
-    HID_INT_EP_INTERVAL, /* bInterval: Polling Interval */
-    /* 34 */
-    ///////////////////////////////////////
-    /// string0 descriptor
-    ///////////////////////////////////////
-    USB_LANGID_INIT(USBD_LANGID_STRING),
-    ///////////////////////////////////////
-    /// string1 descriptor
-    ///////////////////////////////////////
-    0x14,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ///////////////////////////////////////
-    /// string2 descriptor
-    ///////////////////////////////////////
-    0x26,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ' ', 0x00,                  /* wcChar9 */
-    'U', 0x00,                  /* wcChar10 */
-    'A', 0x00,                  /* wcChar11 */
-    'C', 0x00,                  /* wcChar12 */
-    ' ', 0x00,                  /* wcChar13 */
-    'D', 0x00,                  /* wcChar14 */
-    'E', 0x00,                  /* wcChar15 */
-    'M', 0x00,                  /* wcChar16 */
-    'O', 0x00,                  /* wcChar17 */
-    ///////////////////////////////////////
-    /// string3 descriptor
-    ///////////////////////////////////////
-    0x16,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    '2', 0x00,                  /* wcChar0 */
-    '0', 0x00,                  /* wcChar1 */
-    '2', 0x00,                  /* wcChar2 */
-    '4', 0x00,                  /* wcChar3 */
-    '0', 0x00,                  /* wcChar4 */
-    '3', 0x00,                  /* wcChar5 */
-    '1', 0x00,                  /* wcChar6 */
-    '0', 0x00,                  /* wcChar7 */
-    '0', 0x00,                  /* wcChar8 */
-    '0', 0x00,                  /* wcChar9 */
-#ifdef CONFIG_USB_HS
-    ///////////////////////////////////////
-    /// device qualifier descriptor
-    ///////////////////////////////////////
-    0x0a,
-    USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER,
-    0x00,
-    0x02,
-    0x00,
-    0x00,
-    0x00,
-    0x40,
-    0x00,
-    0x00,
-#endif
-    0x00
-};
-#endif

 static const uint8_t hid_keyboard_report_desc[HID_KEYBOARD_REPORT_DESC_SIZE] = {
    0x05, 0x01, // USAGE_PAGE (Generic Desktop)
@@ -510,11 +379,8 @@ struct audio_entity_info audio_entity_table[] = {

 void composite_init(uint8_t busid, uintptr_t reg_base)
 {
-#ifdef CONFIG_USBDEV_ADVANCE_DESC
    usbd_desc_register(busid, &video_audio_hid_descriptor);
-#else
-    usbd_desc_register(busid, video_audio_hid_descriptor);
-#endif
+
    usbd_add_interface(busid, usbd_video_init_intf(busid, &intf0, INTERVAL, MAX_FRAME_SIZE, MAX_PAYLOAD_SIZE));
    usbd_add_interface(busid, usbd_video_init_intf(busid, &intf1, INTERVAL, MAX_FRAME_SIZE, MAX_PAYLOAD_SIZE));
    usbd_add_endpoint(busid, &video_in_ep);
--- a/demo/video_static_h264_template.c
+++ b/demo/video_static_h264_template.c
@@ -48,7 +48,6 @@
 #define USBD_MAX_POWER     100
 #define USBD_LANGID_STRING 1033

-#ifdef CONFIG_USBDEV_ADVANCE_DESC
 static const uint8_t device_descriptor[] = {
    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0xef, 0x02, 0x01, USBD_VID, USBD_PID, 0x0001, 0x01)
 };
@@ -118,94 +117,6 @@ const struct usb_descriptor video_descriptor = {
    .device_quality_descriptor_callback = device_quality_descriptor_callback,
    .string_descriptor_callback = string_descriptor_callback
 };
-#else
-const uint8_t video_descriptor[] = {
-    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0xef, 0x02, 0x01, USBD_VID, USBD_PID, 0x0001, 0x01),
-    USB_CONFIG_DESCRIPTOR_INIT(USB_VIDEO_DESC_SIZ, 0x02, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
-    //VIDEO_VC_DESCRIPTOR_INIT(0x00, VIDEO_INT_EP, 0x0100, VIDEO_VC_TERMINAL_LEN, 48000000, 0x02),
-    VIDEO_VC_NOEP_DESCRIPTOR_INIT(0x00, VIDEO_INT_EP, 0x0100, VIDEO_VC_TERMINAL_LEN, 48000000, 0x02),
-    VIDEO_VS_DESCRIPTOR_INIT(0x01, 0x00, 0x00),
-    VIDEO_VS_INPUT_HEADER_DESCRIPTOR_INIT(0x01, VS_HEADER_SIZ, VIDEO_IN_EP, 0x00),
-    VIDEO_VS_FORMAT_H264_DESCRIPTOR_INIT(0x01, 0x01),
-    VIDEO_VS_FRAME_H264_DESCRIPTOR_INIT(0x01, WIDTH, HEIGHT, MIN_BIT_RATE, MAX_BIT_RATE, DBVAL(INTERVAL), 0x01, DBVAL(INTERVAL)),
-    VIDEO_VS_DESCRIPTOR_INIT(0x01, 0x01, 0x01),
-    /* 1.2.2.2 Standard VideoStream Isochronous Video Data Endpoint Descriptor */
-    USB_ENDPOINT_DESCRIPTOR_INIT(VIDEO_IN_EP, 0x05, VIDEO_PACKET_SIZE, 0x01),
-
-    ///////////////////////////////////////
-    /// string0 descriptor
-    ///////////////////////////////////////
-    USB_LANGID_INIT(USBD_LANGID_STRING),
-    ///////////////////////////////////////
-    /// string1 descriptor
-    ///////////////////////////////////////
-    0x14,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ///////////////////////////////////////
-    /// string2 descriptor
-    ///////////////////////////////////////
-    0x26,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ' ', 0x00,                  /* wcChar9 */
-    'U', 0x00,                  /* wcChar10 */
-    'V', 0x00,                  /* wcChar11 */
-    'C', 0x00,                  /* wcChar12 */
-    ' ', 0x00,                  /* wcChar13 */
-    'D', 0x00,                  /* wcChar14 */
-    'E', 0x00,                  /* wcChar15 */
-    'M', 0x00,                  /* wcChar16 */
-    'O', 0x00,                  /* wcChar17 */
-    ///////////////////////////////////////
-    /// string3 descriptor
-    ///////////////////////////////////////
-    0x16,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    '2', 0x00,                  /* wcChar0 */
-    '0', 0x00,                  /* wcChar1 */
-    '2', 0x00,                  /* wcChar2 */
-    '1', 0x00,                  /* wcChar3 */
-    '0', 0x00,                  /* wcChar4 */
-    '3', 0x00,                  /* wcChar5 */
-    '1', 0x00,                  /* wcChar6 */
-    '0', 0x00,                  /* wcChar7 */
-    '0', 0x00,                  /* wcChar8 */
-    '0', 0x00,                  /* wcChar9 */
-#ifdef CONFIG_USB_HS
-    ///////////////////////////////////////
-    /// device qualifier descriptor
-    ///////////////////////////////////////
-    0x0a,
-    USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER,
-    0x00,
-    0x02,
-    0x00,
-    0x00,
-    0x00,
-    0x40,
-    0x00,
-    0x00,
-#endif
-    0x00
-};
-#endif

 volatile bool tx_flag = 0;
 volatile bool iso_tx_busy = false;
@@ -272,11 +183,8 @@ struct usbd_interface intf1;

 void video_init(uint8_t busid, uintptr_t reg_base)
 {
-#ifdef CONFIG_USBDEV_ADVANCE_DESC
    usbd_desc_register(busid, &video_descriptor);
-#else
-    usbd_desc_register(busid, video_descriptor);
-#endif
+
    usbd_add_interface(busid, usbd_video_init_intf(busid, &intf0, INTERVAL, MAX_FRAME_SIZE, MAX_PAYLOAD_SIZE));
    usbd_add_interface(busid, usbd_video_init_intf(busid, &intf1, INTERVAL, MAX_FRAME_SIZE, MAX_PAYLOAD_SIZE));
    usbd_add_endpoint(busid, &video_in_ep);
--- a/demo/video_static_mjpeg_template.c
+++ b/demo/video_static_mjpeg_template.c
@@ -48,7 +48,6 @@
 #define USBD_MAX_POWER     100
 #define USBD_LANGID_STRING 1033

-#ifdef CONFIG_USBDEV_ADVANCE_DESC
 static const uint8_t device_descriptor[] = {
    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0xef, 0x02, 0x01, USBD_VID, USBD_PID, 0x0001, 0x01)
 };
@@ -118,94 +117,6 @@ const struct usb_descriptor video_descriptor = {
    .device_quality_descriptor_callback = device_quality_descriptor_callback,
    .string_descriptor_callback = string_descriptor_callback
 };
-#else
-const uint8_t video_descriptor[] = {
-    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0xef, 0x02, 0x01, USBD_VID, USBD_PID, 0x0001, 0x01),
-    USB_CONFIG_DESCRIPTOR_INIT(USB_VIDEO_DESC_SIZ, 0x02, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
-    //VIDEO_VC_DESCRIPTOR_INIT(0x00, VIDEO_INT_EP, 0x0100, VIDEO_VC_TERMINAL_LEN, 48000000, 0x02),
-    VIDEO_VC_NOEP_DESCRIPTOR_INIT(0x00, VIDEO_INT_EP, 0x0100, VIDEO_VC_TERMINAL_LEN, 48000000, 0x02),
-    VIDEO_VS_DESCRIPTOR_INIT(0x01, 0x00, 0x00),
-    VIDEO_VS_INPUT_HEADER_DESCRIPTOR_INIT(0x01, VS_HEADER_SIZ, VIDEO_IN_EP, 0x00),
-    VIDEO_VS_FORMAT_MJPEG_DESCRIPTOR_INIT(0x01, 0x01),
-    VIDEO_VS_FRAME_MJPEG_DESCRIPTOR_INIT(0x01, WIDTH, HEIGHT, MIN_BIT_RATE, MAX_BIT_RATE, MAX_FRAME_SIZE, DBVAL(INTERVAL), 0x01, DBVAL(INTERVAL)),
-    VIDEO_VS_DESCRIPTOR_INIT(0x01, 0x01, 0x01),
-    /* 1.2.2.2 Standard VideoStream Isochronous Video Data Endpoint Descriptor */
-    USB_ENDPOINT_DESCRIPTOR_INIT(VIDEO_IN_EP, 0x05, VIDEO_PACKET_SIZE, 0x01),
-
-    ///////////////////////////////////////
-    /// string0 descriptor
-    ///////////////////////////////////////
-    USB_LANGID_INIT(USBD_LANGID_STRING),
-    ///////////////////////////////////////
-    /// string1 descriptor
-    ///////////////////////////////////////
-    0x14,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ///////////////////////////////////////
-    /// string2 descriptor
-    ///////////////////////////////////////
-    0x26,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ' ', 0x00,                  /* wcChar9 */
-    'U', 0x00,                  /* wcChar10 */
-    'V', 0x00,                  /* wcChar11 */
-    'C', 0x00,                  /* wcChar12 */
-    ' ', 0x00,                  /* wcChar13 */
-    'D', 0x00,                  /* wcChar14 */
-    'E', 0x00,                  /* wcChar15 */
-    'M', 0x00,                  /* wcChar16 */
-    'O', 0x00,                  /* wcChar17 */
-    ///////////////////////////////////////
-    /// string3 descriptor
-    ///////////////////////////////////////
-    0x16,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    '2', 0x00,                  /* wcChar0 */
-    '0', 0x00,                  /* wcChar1 */
-    '2', 0x00,                  /* wcChar2 */
-    '1', 0x00,                  /* wcChar3 */
-    '0', 0x00,                  /* wcChar4 */
-    '3', 0x00,                  /* wcChar5 */
-    '1', 0x00,                  /* wcChar6 */
-    '0', 0x00,                  /* wcChar7 */
-    '0', 0x00,                  /* wcChar8 */
-    '0', 0x00,                  /* wcChar9 */
-#ifdef CONFIG_USB_HS
-    ///////////////////////////////////////
-    /// device qualifier descriptor
-    ///////////////////////////////////////
-    0x0a,
-    USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER,
-    0x00,
-    0x02,
-    0x00,
-    0x00,
-    0x00,
-    0x40,
-    0x00,
-    0x00,
-#endif
-    0x00
-};
-#endif

 volatile bool tx_flag = 0;
 volatile bool iso_tx_busy = false;
@@ -272,11 +183,8 @@ struct usbd_interface intf1;

 void video_init(uint8_t busid, uintptr_t reg_base)
 {
-#ifdef CONFIG_USBDEV_ADVANCE_DESC
    usbd_desc_register(busid, &video_descriptor);
-#else
-    usbd_desc_register(busid, video_descriptor);
-#endif
+
    usbd_add_interface(busid, usbd_video_init_intf(busid, &intf0, INTERVAL, MAX_FRAME_SIZE, MAX_PAYLOAD_SIZE));
    usbd_add_interface(busid, usbd_video_init_intf(busid, &intf1, INTERVAL, MAX_FRAME_SIZE, MAX_PAYLOAD_SIZE));
    usbd_add_endpoint(busid, &video_in_ep);
--- a/demo/video_static_yuyv_template.c
+++ b/demo/video_static_yuyv_template.c
@@ -49,7 +49,6 @@
 #define USBD_MAX_POWER     100
 #define USBD_LANGID_STRING 1033

-#ifdef CONFIG_USBDEV_ADVANCE_DESC
 static const uint8_t device_descriptor[] = {
    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0xef, 0x02, 0x01, USBD_VID, USBD_PID, 0x0001, 0x01)
 };
@@ -121,95 +120,6 @@ const struct usb_descriptor video_descriptor = {
    .device_quality_descriptor_callback = device_quality_descriptor_callback,
    .string_descriptor_callback = string_descriptor_callback
 };
-#else
-const uint8_t video_descriptor[] = {
-    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0xef, 0x02, 0x01, USBD_VID, USBD_PID, 0x0001, 0x01),
-    USB_CONFIG_DESCRIPTOR_INIT(USB_VIDEO_DESC_SIZ, 0x02, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
-    //VIDEO_VC_DESCRIPTOR_INIT(0x00, VIDEO_INT_EP, 0x0100, VIDEO_VC_TERMINAL_LEN, 48000000, 0x02),
-    VIDEO_VC_NOEP_DESCRIPTOR_INIT(0x00, VIDEO_INT_EP, 0x0100, VIDEO_VC_TERMINAL_LEN, 48000000, 0x02),
-    VIDEO_VS_DESCRIPTOR_INIT(0x01, 0x00, 0x00),
-    VIDEO_VS_INPUT_HEADER_DESCRIPTOR_INIT(0x01, VS_HEADER_SIZ, VIDEO_IN_EP, 0x00),
-    VIDEO_VS_FORMAT_UNCOMPRESSED_DESCRIPTOR_INIT(0x01, 0x01, VIDEO_GUID_YUY2),
-    VIDEO_VS_FRAME_UNCOMPRESSED_DESCRIPTOR_INIT(0x01, WIDTH, HEIGHT, MIN_BIT_RATE, MAX_BIT_RATE, MAX_FRAME_SIZE, DBVAL(INTERVAL), 0x01, DBVAL(INTERVAL)),
-    VIDEO_VS_COLOR_MATCHING_DESCRIPTOR_INIT(),
-    VIDEO_VS_DESCRIPTOR_INIT(0x01, 0x01, 0x01),
-    /* 1.2.2.2 Standard VideoStream Isochronous Video Data Endpoint Descriptor */
-    USB_ENDPOINT_DESCRIPTOR_INIT(VIDEO_IN_EP, 0x05, VIDEO_PACKET_SIZE, 0x01),
-
-    ///////////////////////////////////////
-    /// string0 descriptor
-    ///////////////////////////////////////
-    USB_LANGID_INIT(USBD_LANGID_STRING),
-    ///////////////////////////////////////
-    /// string1 descriptor
-    ///////////////////////////////////////
-    0x14,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ///////////////////////////////////////
-    /// string2 descriptor
-    ///////////////////////////////////////
-    0x26,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ' ', 0x00,                  /* wcChar9 */
-    'U', 0x00,                  /* wcChar10 */
-    'V', 0x00,                  /* wcChar11 */
-    'C', 0x00,                  /* wcChar12 */
-    ' ', 0x00,                  /* wcChar13 */
-    'D', 0x00,                  /* wcChar14 */
-    'E', 0x00,                  /* wcChar15 */
-    'M', 0x00,                  /* wcChar16 */
-    'O', 0x00,                  /* wcChar17 */
-    ///////////////////////////////////////
-    /// string3 descriptor
-    ///////////////////////////////////////
-    0x16,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    '2', 0x00,                  /* wcChar0 */
-    '0', 0x00,                  /* wcChar1 */
-    '2', 0x00,                  /* wcChar2 */
-    '1', 0x00,                  /* wcChar3 */
-    '0', 0x00,                  /* wcChar4 */
-    '3', 0x00,                  /* wcChar5 */
-    '1', 0x00,                  /* wcChar6 */
-    '0', 0x00,                  /* wcChar7 */
-    '0', 0x00,                  /* wcChar8 */
-    '0', 0x00,                  /* wcChar9 */
-#ifdef CONFIG_USB_HS
-    ///////////////////////////////////////
-    /// device qualifier descriptor
-    ///////////////////////////////////////
-    0x0a,
-    USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER,
-    0x00,
-    0x02,
-    0x00,
-    0x00,
-    0x00,
-    0x40,
-    0x00,
-    0x00,
-#endif
-    0x00
-};
-#endif

 volatile bool tx_flag = 0;
 volatile bool iso_tx_busy = false;
@@ -276,11 +186,8 @@ struct usbd_interface intf1;

 void video_init(uint8_t busid, uintptr_t reg_base)
 {
-#ifdef CONFIG_USBDEV_ADVANCE_DESC
    usbd_desc_register(busid, &video_descriptor);
-#else
-    usbd_desc_register(busid, video_descriptor);
-#endif
+
    usbd_add_interface(busid, usbd_video_init_intf(busid, &intf0, INTERVAL, MAX_FRAME_SIZE, MAX_PAYLOAD_SIZE));
    usbd_add_interface(busid, usbd_video_init_intf(busid, &intf1, INTERVAL, MAX_FRAME_SIZE, MAX_PAYLOAD_SIZE));
    usbd_add_endpoint(busid, &video_in_ep);
--- a/demo/webusb_hid_template.c
+++ b/demo/webusb_hid_template.c
@@ -64,7 +64,6 @@ struct usb_bos_descriptor bos_desc = {
 #define USB_CONFIG_SIZE       (34 + 9)
 #define HID_KEYBOARD_REPORT_DESC_SIZE 63

-#ifdef CONFIG_USBDEV_ADVANCE_DESC
 static const uint8_t device_descriptor[] = {
    USB_DEVICE_DESCRIPTOR_INIT(USB_2_1, 0x00, 0x00, 0x00, USBD_VID, USBD_PID, 0x0002, 0x01)
 };
@@ -130,89 +129,6 @@ const struct usb_descriptor webusb_hid_descriptor = {
    .webusb_url_descriptor = &webusb_url_desc,
    .bos_descriptor = &bos_desc
 };
-#else
-static const uint8_t webusb_hid_descriptor[] = {
-    USB_DEVICE_DESCRIPTOR_INIT(USB_2_1, 0x00, 0x00, 0x00, USBD_VID, USBD_PID, 0x0002, 0x01),
-    USB_CONFIG_DESCRIPTOR_INIT(USB_CONFIG_SIZE, 0x02, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
-    HID_KEYBOARD_DESCRIPTOR_INIT(0x00, 0x01, HID_KEYBOARD_REPORT_DESC_SIZE, HID_INT_EP, HID_INT_EP_SIZE, HID_INT_EP_INTERVAL),
-    USB_INTERFACE_DESCRIPTOR_INIT(WEBUSB_INTF_NUM, 0x00, 0x00, 0xff, 0x00, 0x00, 0x00),
-    ///////////////////////////////////////
-    /// string0 descriptor
-    ///////////////////////////////////////
-    USB_LANGID_INIT(USBD_LANGID_STRING),
-    ///////////////////////////////////////
-    /// string1 descriptor
-    ///////////////////////////////////////
-    0x14,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ///////////////////////////////////////
-    /// string2 descriptor
-    ///////////////////////////////////////
-    0x2C,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ' ', 0x00,                  /* wcChar9 */
-    'W', 0x00,                  /* wcChar10 */
-    'E', 0x00,                  /* wcChar11 */
-    'B', 0x00,                  /* wcChar12 */
-    'U', 0x00,                  /* wcChar13 */
-    'S', 0x00,                  /* wcChar14 */
-    'B', 0x00,                  /* wcChar15 */
-    ' ', 0x00,                  /* wcChar16 */
-    'D', 0x00,                  /* wcChar17 */
-    'E', 0x00,                  /* wcChar18 */
-    'M', 0x00,                  /* wcChar19 */
-    'O', 0x00,                  /* wcChar20 */
-    ///////////////////////////////////////
-    /// string3 descriptor
-    ///////////////////////////////////////
-    0x16,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    '2', 0x00,                  /* wcChar0 */
-    '0', 0x00,                  /* wcChar1 */
-    '2', 0x00,                  /* wcChar2 */
-    '2', 0x00,                  /* wcChar3 */
-    '1', 0x00,                  /* wcChar4 */
-    '2', 0x00,                  /* wcChar5 */
-    '3', 0x00,                  /* wcChar6 */
-    '4', 0x00,                  /* wcChar7 */
-    '5', 0x00,                  /* wcChar8 */
-    '6', 0x00,                  /* wcChar9 */
-#ifdef CONFIG_USB_HS
-    ///////////////////////////////////////
-    /// device qualifier descriptor
-    ///////////////////////////////////////
-    0x0a,
-    USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER,
-    0x00,
-    0x02,
-    0x00,
-    0x00,
-    0x00,
-    0x40,
-    0x00,
-    0x00,
-#endif
-    0x00
-};
-#endif

 /* USB HID device Configuration Descriptor */
 static uint8_t hid_desc[9] __ALIGN_END = {
@@ -309,16 +225,8 @@ static struct usbd_interface intf0;

 void webusb_hid_keyboard_init(uint8_t busid, uintptr_t reg_base)
 {
-#ifdef CONFIG_USBDEV_ADVANCE_DESC
    usbd_desc_register(busid, &webusb_hid_descriptor);
-#else
-    usbd_desc_register(busid, webusb_hid_descriptor);
-#endif
-#ifndef CONFIG_USBDEV_ADVANCE_DESC
-    usbd_bos_desc_register(busid, &bos_desc);
-    usbd_msosv2_desc_register(busid, &msosv2_desc);
-    usbd_webusb_desc_register(busid, &webusb_url_desc);
-#endif
+
    usbd_add_interface(busid, usbd_hid_init_intf(busid, &intf0, hid_keyboard_report_desc, HID_KEYBOARD_REPORT_DESC_SIZE));
    usbd_add_endpoint(busid, &hid_in_ep);

--- a/demo/winusb1.0_template.c
+++ b/demo/winusb1.0_template.c
@@ -133,7 +133,6 @@ struct usb_msosv1_descriptor msosv1_desc = {
 #define WINUSB_EP_MPS 64
 #endif

-#ifdef CONFIG_USBDEV_ADVANCE_DESC
 static const uint8_t device_descriptor[] = {
    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0x00, 0x00, 0x00, USBD_VID, USBD_PID, 0x0001, 0x01)
 };
@@ -205,151 +204,6 @@ const struct usb_descriptor winusbv1_descriptor = {
    .string_descriptor_callback = string_descriptor_callback,
    .msosv1_descriptor = &msosv1_desc
 };
-#else
-const uint8_t winusbv1_descriptor[] = {
-    USB_DEVICE_DESCRIPTOR_INIT(USB_2_0, 0x00, 0x00, 0x00, USBD_VID, USBD_PID, 0x0001, 0x01),
-    USB_CONFIG_DESCRIPTOR_INIT(USB_CONFIG_SIZE, INTF_NUM, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
-    USB_INTERFACE_DESCRIPTOR_INIT(0x00, 0x00, 0x02, 0xff, 0xff, 0x00, 0x04),
-    USB_ENDPOINT_DESCRIPTOR_INIT(WINUSB_IN_EP, 0x02, WINUSB_EP_MPS, 0x00),
-    USB_ENDPOINT_DESCRIPTOR_INIT(WINUSB_OUT_EP, 0x02, WINUSB_EP_MPS, 0x00),
-#if WINUSB_NUM == 2
-    USB_INTERFACE_DESCRIPTOR_INIT(0x01, 0x00, 0x02, 0xff, 0xff, 0x00, 0x05),
-    USB_ENDPOINT_DESCRIPTOR_INIT(WINUSB_IN_EP2, 0x02, WINUSB_EP_MPS, 0x00),
-    USB_ENDPOINT_DESCRIPTOR_INIT(WINUSB_OUT_EP2, 0x02, WINUSB_EP_MPS, 0x00),
-#endif
-    ///////////////////////////////////////
-    /// string0 descriptor
-    ///////////////////////////////////////
-    USB_LANGID_INIT(USBD_LANGID_STRING),
-    ///////////////////////////////////////
-    /// string1 descriptor
-    ///////////////////////////////////////
-    0x14,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ///////////////////////////////////////
-    /// string2 descriptor
-    ///////////////////////////////////////
-    0x2C,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ' ', 0x00,                  /* wcChar9 */
-    'W', 0x00,                  /* wcChar10 */
-    'I', 0x00,                  /* wcChar11 */
-    'N', 0x00,                  /* wcChar12 */
-    'U', 0x00,                  /* wcChar13 */
-    'S', 0x00,                  /* wcChar14 */
-    'B', 0x00,                  /* wcChar15 */
-    ' ', 0x00,                  /* wcChar16 */
-    'D', 0x00,                  /* wcChar17 */
-    'E', 0x00,                  /* wcChar18 */
-    'M', 0x00,                  /* wcChar19 */
-    'O', 0x00,                  /* wcChar20 */
-    ///////////////////////////////////////
-    /// string3 descriptor
-    ///////////////////////////////////////
-    0x16,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    '2', 0x00,                  /* wcChar0 */
-    '0', 0x00,                  /* wcChar1 */
-    '2', 0x00,                  /* wcChar2 */
-    '1', 0x00,                  /* wcChar3 */
-    '1', 0x00,                  /* wcChar4 */
-    '2', 0x00,                  /* wcChar5 */
-    '3', 0x00,                  /* wcChar6 */
-    '4', 0x00,                  /* wcChar7 */
-    '5', 0x00,                  /* wcChar8 */
-    '6', 0x00,                  /* wcChar9 */
-    ///////////////////////////////////////
-    /// string4 descriptor
-    ///////////////////////////////////////
-    0x30,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ' ', 0x00,                  /* wcChar9 */
-    'W', 0x00,                  /* wcChar10 */
-    'I', 0x00,                  /* wcChar11 */
-    'N', 0x00,                  /* wcChar12 */
-    'U', 0x00,                  /* wcChar13 */
-    'S', 0x00,                  /* wcChar14 */
-    'B', 0x00,                  /* wcChar15 */
-    ' ', 0x00,                  /* wcChar16 */
-    'D', 0x00,                  /* wcChar17 */
-    'E', 0x00,                  /* wcChar18 */
-    'M', 0x00,                  /* wcChar19 */
-    'O', 0x00,                  /* wcChar20 */
-    ' ', 0x00,                  /* wcChar16 */
-    '1', 0x00,                  /* wcChar21 */
-    ///////////////////////////////////////
-    /// string5 descriptor
-    ///////////////////////////////////////
-    0x30,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ' ', 0x00,                  /* wcChar9 */
-    'W', 0x00,                  /* wcChar10 */
-    'I', 0x00,                  /* wcChar11 */
-    'N', 0x00,                  /* wcChar12 */
-    'U', 0x00,                  /* wcChar13 */
-    'S', 0x00,                  /* wcChar14 */
-    'B', 0x00,                  /* wcChar15 */
-    ' ', 0x00,                  /* wcChar16 */
-    'D', 0x00,                  /* wcChar17 */
-    'E', 0x00,                  /* wcChar18 */
-    'M', 0x00,                  /* wcChar19 */
-    'O', 0x00,                  /* wcChar20 */
-    ' ', 0x00,                  /* wcChar16 */
-    '2', 0x00,                  /* wcChar21 */
-#ifdef CONFIG_USB_HS
-    ///////////////////////////////////////
-    /// device qualifier descriptor
-    ///////////////////////////////////////
-    0x0a,
-    USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER,
-    0x00,
-    0x02,
-    0x00,
-    0x00,
-    0x00,
-    0x40,
-    0x00,
-    0x00,
-#endif
-    0x00
-};
-#endif

 USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t read_buffer[2048];
 USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t write_buffer[2048];
@@ -465,14 +319,8 @@ struct usbd_interface intf1;

 void winusbv1_init(uint8_t busid, uintptr_t reg_base)
 {
-#ifdef CONFIG_USBDEV_ADVANCE_DESC
    usbd_desc_register(busid, &winusbv1_descriptor);
-#else
-    usbd_desc_register(busid, winusbv1_descriptor);
-#endif
-#ifndef CONFIG_USBDEV_ADVANCE_DESC
-    usbd_msosv1_desc_register(busid, &msosv1_desc);
-#endif
+
    usbd_add_interface(busid, &intf0);
    usbd_add_endpoint(busid, &winusb_out_ep1);
    usbd_add_endpoint(busid, &winusb_in_ep1);
--- a/demo/winusb2.0_cdc_template.c
+++ b/demo/winusb2.0_cdc_template.c
@@ -50,7 +50,6 @@ const struct usb_bos_descriptor bos_desc = {
 #define WINUSB_EP_MPS 64
 #endif

-#ifdef CONFIG_USBDEV_ADVANCE_DESC
 static const uint8_t device_descriptor[] = {
    USB_DEVICE_DESCRIPTOR_INIT(USB_2_1, 0xEF, 0x02, 0x01, USBD_VID, USBD_PID, 0x0100, 0x01)
 };
@@ -121,90 +120,6 @@ const struct usb_descriptor winusbv2_cdc_descriptor = {
    .msosv2_descriptor = &msosv2_desc,
    .bos_descriptor = &bos_desc
 };
-#else
-const uint8_t winusbv2_cdc_descriptor[] = {
-    USB_DEVICE_DESCRIPTOR_INIT(USB_2_1, 0xEF, 0x02, 0x01, USBD_VID, USBD_PID, 0x0100, 0x01),
-    /* Configuration 0 */
-    USB_CONFIG_DESCRIPTOR_INIT(USB_CONFIG_SIZE, INTF_NUM, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
-    /* Interface 0 */
-    USB_INTERFACE_DESCRIPTOR_INIT(0x00, 0x00, 0x02, 0xFF, 0x00, 0x00, 0x02),
-    /* Endpoint OUT 2 */
-    USB_ENDPOINT_DESCRIPTOR_INIT(WINUSB_OUT_EP, USB_ENDPOINT_TYPE_BULK, WINUSB_EP_MPS, 0x00),
-    /* Endpoint IN 1 */
-    USB_ENDPOINT_DESCRIPTOR_INIT(WINUSB_IN_EP, USB_ENDPOINT_TYPE_BULK, WINUSB_EP_MPS, 0x00),
-    CDC_ACM_DESCRIPTOR_INIT(0x01, CDC_INT_EP, CDC_OUT_EP, CDC_IN_EP, WINUSB_EP_MPS, 0x00),
-    /* String 0 (LANGID) */
-    USB_LANGID_INIT(USBD_LANGID_STRING),
-    /* String 1 (Manufacturer) */
-    0x14,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ///////////////////////////////////////
-    /// string2 descriptor
-    ///////////////////////////////////////
-    0x2C,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ' ', 0x00,                  /* wcChar9 */
-    'W', 0x00,                  /* wcChar10 */
-    'I', 0x00,                  /* wcChar11 */
-    'N', 0x00,                  /* wcChar12 */
-    'U', 0x00,                  /* wcChar13 */
-    'S', 0x00,                  /* wcChar14 */
-    'B', 0x00,                  /* wcChar15 */
-    ' ', 0x00,                  /* wcChar16 */
-    'D', 0x00,                  /* wcChar17 */
-    'E', 0x00,                  /* wcChar18 */
-    'M', 0x00,                  /* wcChar19 */
-    'O', 0x00,                  /* wcChar20 */
-    ///////////////////////////////////////
-    /// string3 descriptor
-    ///////////////////////////////////////
-    0x16,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    '2', 0x00,                  /* wcChar0 */
-    '0', 0x00,                  /* wcChar1 */
-    '2', 0x00,                  /* wcChar2 */
-    '2', 0x00,                  /* wcChar3 */
-    '1', 0x00,                  /* wcChar4 */
-    '2', 0x00,                  /* wcChar5 */
-    '3', 0x00,                  /* wcChar6 */
-    '4', 0x00,                  /* wcChar7 */
-    '5', 0x00,                  /* wcChar8 */
-    '6', 0x00,                  /* wcChar9 */
-#ifdef CONFIG_USB_HS
-    /* Device Qualifier */
-    0x0a,
-    USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER,
-    0x10,
-    0x02,
-    0x00,
-    0x00,
-    0x00,
-    0x40,
-    0x00,
-    0x00,
-#endif
-    /* End */
-    0x00
-};
-#endif

 USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t read_buffer[2048];
 USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t write_buffer[2048];
@@ -314,15 +229,8 @@ struct usbd_interface intf2;

 void winusbv2_cdc_init(uint8_t busid, uintptr_t reg_base)
 {
-#ifdef CONFIG_USBDEV_ADVANCE_DESC
    usbd_desc_register(busid, &winusbv2_cdc_descriptor);
-#else
-    usbd_desc_register(busid, winusbv2_cdc_descriptor);
-#endif
-#ifndef CONFIG_USBDEV_ADVANCE_DESC
-    usbd_bos_desc_register(busid, &bos_desc);
-    usbd_msosv2_desc_register(busid, &msosv2_desc);
-#endif
+
    /*!< winusb */
    usbd_add_interface(busid, &winusb_intf);
    usbd_add_endpoint(busid, &winusb_out_ep1);
--- a/demo/winusb2.0_template.c
+++ b/demo/winusb2.0_template.c
@@ -62,7 +62,6 @@ const struct usb_bos_descriptor bos_desc = {
 #define WINUSB_EP_MPS 64
 #endif

-#ifdef CONFIG_USBDEV_ADVANCE_DESC
 static const uint8_t device_descriptor[] = {
    USB_DEVICE_DESCRIPTOR_INIT(USB_2_1, 0x00, 0x00, 0x00, USBD_VID, USBD_PID, 0x0001, 0x01)
 };
@@ -135,151 +134,6 @@ const struct usb_descriptor winusbv2_descriptor = {
    .msosv2_descriptor = &msosv2_desc,
    .bos_descriptor = &bos_desc,
 };
-#else
-const uint8_t winusbv2_descriptor[] = {
-    USB_DEVICE_DESCRIPTOR_INIT(USB_2_1, 0x00, 0x00, 0x00, USBD_VID, USBD_PID, 0x0001, 0x01),
-    USB_CONFIG_DESCRIPTOR_INIT(USB_CONFIG_SIZE, INTF_NUM, 0x01, USB_CONFIG_BUS_POWERED, USBD_MAX_POWER),
-    USB_INTERFACE_DESCRIPTOR_INIT(0x00, 0x00, 0x02, 0xff, 0xff, 0x00, 0x04),
-    USB_ENDPOINT_DESCRIPTOR_INIT(WINUSB_IN_EP, 0x02, WINUSB_EP_MPS, 0x00),
-    USB_ENDPOINT_DESCRIPTOR_INIT(WINUSB_OUT_EP, 0x02, WINUSB_EP_MPS, 0x00),
-#if WINUSB_NUM == 2
-    USB_INTERFACE_DESCRIPTOR_INIT(0x01, 0x00, 0x02, 0xff, 0xff, 0x00, 0x05),
-    USB_ENDPOINT_DESCRIPTOR_INIT(WINUSB_IN_EP2, 0x02, WINUSB_EP_MPS, 0x00),
-    USB_ENDPOINT_DESCRIPTOR_INIT(WINUSB_OUT_EP2, 0x02, WINUSB_EP_MPS, 0x00),
-#endif
-    ///////////////////////////////////////
-    /// string0 descriptor
-    ///////////////////////////////////////
-    USB_LANGID_INIT(USBD_LANGID_STRING),
-    ///////////////////////////////////////
-    /// string1 descriptor
-    ///////////////////////////////////////
-    0x14,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ///////////////////////////////////////
-    /// string2 descriptor
-    ///////////////////////////////////////
-    0x2C,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ' ', 0x00,                  /* wcChar9 */
-    'W', 0x00,                  /* wcChar10 */
-    'I', 0x00,                  /* wcChar11 */
-    'N', 0x00,                  /* wcChar12 */
-    'U', 0x00,                  /* wcChar13 */
-    'S', 0x00,                  /* wcChar14 */
-    'B', 0x00,                  /* wcChar15 */
-    ' ', 0x00,                  /* wcChar16 */
-    'D', 0x00,                  /* wcChar17 */
-    'E', 0x00,                  /* wcChar18 */
-    'M', 0x00,                  /* wcChar19 */
-    'O', 0x00,                  /* wcChar20 */
-    ///////////////////////////////////////
-    /// string3 descriptor
-    ///////////////////////////////////////
-    0x16,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    '2', 0x00,                  /* wcChar0 */
-    '0', 0x00,                  /* wcChar1 */
-    '2', 0x00,                  /* wcChar2 */
-    '1', 0x00,                  /* wcChar3 */
-    '1', 0x00,                  /* wcChar4 */
-    '2', 0x00,                  /* wcChar5 */
-    '3', 0x00,                  /* wcChar6 */
-    '4', 0x00,                  /* wcChar7 */
-    '5', 0x00,                  /* wcChar8 */
-    '6', 0x00,                  /* wcChar9 */
-    ///////////////////////////////////////
-    /// string4 descriptor
-    ///////////////////////////////////////
-    0x30,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ' ', 0x00,                  /* wcChar9 */
-    'W', 0x00,                  /* wcChar10 */
-    'I', 0x00,                  /* wcChar11 */
-    'N', 0x00,                  /* wcChar12 */
-    'U', 0x00,                  /* wcChar13 */
-    'S', 0x00,                  /* wcChar14 */
-    'B', 0x00,                  /* wcChar15 */
-    ' ', 0x00,                  /* wcChar16 */
-    'D', 0x00,                  /* wcChar17 */
-    'E', 0x00,                  /* wcChar18 */
-    'M', 0x00,                  /* wcChar19 */
-    'O', 0x00,                  /* wcChar20 */
-    ' ', 0x00,                  /* wcChar16 */
-    '1', 0x00,                  /* wcChar21 */
-    ///////////////////////////////////////
-    /// string5 descriptor
-    ///////////////////////////////////////
-    0x30,                       /* bLength */
-    USB_DESCRIPTOR_TYPE_STRING, /* bDescriptorType */
-    'C', 0x00,                  /* wcChar0 */
-    'h', 0x00,                  /* wcChar1 */
-    'e', 0x00,                  /* wcChar2 */
-    'r', 0x00,                  /* wcChar3 */
-    'r', 0x00,                  /* wcChar4 */
-    'y', 0x00,                  /* wcChar5 */
-    'U', 0x00,                  /* wcChar6 */
-    'S', 0x00,                  /* wcChar7 */
-    'B', 0x00,                  /* wcChar8 */
-    ' ', 0x00,                  /* wcChar9 */
-    'W', 0x00,                  /* wcChar10 */
-    'I', 0x00,                  /* wcChar11 */
-    'N', 0x00,                  /* wcChar12 */
-    'U', 0x00,                  /* wcChar13 */
-    'S', 0x00,                  /* wcChar14 */
-    'B', 0x00,                  /* wcChar15 */
-    ' ', 0x00,                  /* wcChar16 */
-    'D', 0x00,                  /* wcChar17 */
-    'E', 0x00,                  /* wcChar18 */
-    'M', 0x00,                  /* wcChar19 */
-    'O', 0x00,                  /* wcChar20 */
-    ' ', 0x00,                  /* wcChar16 */
-    '2', 0x00,                  /* wcChar21 */
-#ifdef CONFIG_USB_HS
-    ///////////////////////////////////////
-    /// device qualifier descriptor
-    ///////////////////////////////////////
-    0x0a,
-    USB_DESCRIPTOR_TYPE_DEVICE_QUALIFIER,
-    0x00,
-    0x02,
-    0x00,
-    0x00,
-    0x00,
-    0x40,
-    0x00,
-    0x00,
-#endif
-    0x00
-};
-#endif

 USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t read_buffer[2048];
 USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t write_buffer[2048];
@@ -395,15 +249,8 @@ struct usbd_interface intf1;

 void winusbv2_init(uint8_t busid, uintptr_t reg_base)
 {
-#ifdef CONFIG_USBDEV_ADVANCE_DESC
    usbd_desc_register(busid, &winusbv2_descriptor);
-#else
-    usbd_desc_register(busid, winusbv2_descriptor);
-#endif
-#ifndef CONFIG_USBDEV_ADVANCE_DESC
-    usbd_bos_desc_register(busid, &bos_desc);
-    usbd_msosv2_desc_register(busid, &msosv2_desc);
-#endif
+
    usbd_add_interface(busid, &intf0);
    usbd_add_endpoint(busid, &winusb_out_ep1);
    usbd_add_endpoint(busid, &winusb_in_ep1);
--- a/docs/source/api/api_config.rst
+++ b/docs/source/api/api_config.rst
@@ -19,6 +19,11 @@ CONFIG_USB_PRINTF_COLOR_ENABLE

 控制 log 颜色打印，默认开启

+CONFIG_USB_DCACHE_ENABLE
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+不使用 nocache ram 时，开启此宏以保证数据一致性。 **使用 EHCI 时，内部依旧需要使用 nocache ram**。
+
 CONFIG_USB_ALIGN_SIZE
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

@@ -126,7 +131,7 @@ rndis 与 lwip 接口的对接

 .. code-block:: C

-    #define CONFIG_USBHOST_MAX_CDC_ACM_CLASS 4
+    #define CONFIG_USBHOST_MAX_SERIAL_CLASS  4
    #define CONFIG_USBHOST_MAX_HID_CLASS     4
    #define CONFIG_USBHOST_MAX_MSC_CLASS     2
    #define CONFIG_USBHOST_MAX_AUDIO_CLASS   1
@@ -150,7 +155,7 @@ CONFIG_USBHOST_REQUEST_BUFFER_LEN
 CONFIG_USBHOST_CONTROL_TRANSFER_TIMEOUT
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

-控制传输发送或者接收的超时时间，默认 1s
+控制传输发送或者接收的超时时间，默认 500 ms

 CONFIG_USBHOST_MSC_TIMEOUT
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
--- a/docs/source/api/api_device.rst
+++ b/docs/source/api/api_device.rst
@@ -14,8 +14,6 @@
 CORE
 -----------------

-.. note:: 请注意，v1.1 版本开始增加 busid 形参，其余保持不变，所以 API 说明不做更新
-
 端点结构体
 """"""""""""""""""""""""""""""""""""

@@ -28,7 +26,6 @@ CORE
        usbd_endpoint_callback ep_cb;
    };

- **list** 端点的链表节点
 - **ep_addr** 端点地址（带方向）
 - **ep_cb** 端点完成中断回调函数。

@@ -58,64 +55,39 @@ CORE
 - **hid_report_descriptor** hid 报告描述符
 - **hid_report_descriptor_len** hid 报告描述符长度
 - **intf_num** 当前接口偏移
- **ep_list** 端点的链表节点

 usbd_desc_register
 """"""""""""""""""""""""""""""""""""

-``usbd_desc_register`` 用来注册 USB 描述符，描述符种类包括：设备描述符、配置描述符（包含配置描述符、接口描述符、class 类描述符、端点描述符）、字符串描述符、设备限定描述符。
+``usbd_desc_register`` 用来注册 USB 描述符，描述符种类包括：设备描述符、配置描述符（包含配置描述符、接口描述符、class 类描述符、端点描述符）、字符串描述符、设备限定描述符，其他速度描述符，
+bos描述符，winusb 描述符。

 .. code-block:: C

-    void usbd_desc_register(const uint8_t *desc);
+    // 开启 CONFIG_USBDEV_ADVANCE_DESC
+    void usbd_desc_register(uint8_t busid, const struct usb_descriptor *desc);
+
+    // 关闭 CONFIG_USBDEV_ADVANCE_DESC
+    void usbd_desc_register(uint8_t busid, const uint8_t *desc);
+    void usbd_msosv1_desc_register(uint8_t busid, struct usb_msosv1_descriptor *desc);
+    void usbd_msosv2_desc_register(uint8_t busid, struct usb_msosv2_descriptor *desc);
+    void usbd_bos_desc_register(uint8_t busid, struct usb_bos_descriptor *desc);
+    void usbd_webusb_desc_register(uint8_t busid, struct usb_webusb_descriptor *desc);

 - **desc**  描述符的句柄

-.. note:: 当前 API 仅支持一种速度，如果需要更高级的速度切换功能，请开启 CONFIG_USBDEV_ADVANCE_DESC，并且包含了下面所有描述符注册功能
-
-
-usbd_msosv1_desc_register
-""""""""""""""""""""""""""""""""""""
-
-``usbd_msosv1_desc_register`` 用来注册一个 WINUSB 1.0 描述符。
-
-.. code-block:: C
-
-    void usbd_msosv1_desc_register(struct usb_msosv1_descriptor *desc);
-
- **desc**  描述符句柄
-
-usbd_msosv2_desc_register
-""""""""""""""""""""""""""""""""""""
-
-``usbd_msosv2_desc_register`` 用来注册一个 WINUSB 2.0 描述符。
-
-.. code-block:: C
-
-    void usbd_msosv2_desc_register(struct usb_msosv2_descriptor *desc);
-
- **desc**  描述符句柄
-
-usbd_bos_desc_register
-""""""""""""""""""""""""""""""""""""
-
-``usbd_bos_desc_register`` 用来注册一个 BOS 描述符， USB 2.1 版本以上必须注册。
-
-.. code-block:: C
-
-    void usbd_bos_desc_register(struct usb_bos_descriptor *desc);
-
- **desc**  描述符句柄
+.. note:: 当前默认开启 CONFIG_USBDEV_ADVANCE_DESC，如果需要使用旧版本 API 请关闭该宏，从 v1.6.0 开始只有开启了 CONFIG_USBDEV_ADVANCE_DESC 的 API

 usbd_add_interface
 """"""""""""""""""""""""""""""""""""

-``usbd_add_interface`` 添加一个接口驱动。 **添加顺序必须按照描述符顺序**。
+``usbd_add_interface`` 添加一个接口驱动。 **添加顺序必须按照描述符中接口顺序**。

 .. code-block:: C

-    void usbd_add_interface(struct usbd_interface *intf);
+    void usbd_add_interface(uint8_t busid, struct usbd_interface *intf);

+- **busid** USB 总线 id
 - **intf**  接口驱动句柄，通常从不同 class 的 `xxx_init_intf` 函数获取

 usbd_add_endpoint
@@ -125,27 +97,59 @@ usbd_add_endpoint

 .. code-block:: C

-    void usbd_add_endpoint(struct usbd_endpoint *ep);;
+    void usbd_add_endpoint(uint8_t busid, struct usbd_endpoint *ep);

+- **busid** USB 总线 id
 - **ep**    端点句柄

 usbd_initialize
 """"""""""""""""""""""""""""""""""""

-``usbd_initialize`` 用来初始化 usb device 寄存器配置、usb 时钟、中断等，需要注意，此函数必须在所有列出的 API 最后。 **如果使用 os，必须放在线程中执行**。
+``usbd_initialize`` 用来初始化 usb device 寄存器配置、usb 时钟、中断等，需要注意，此函数必须在注册描述符 API 最后。 **如果使用 os，必须放在线程中执行**。

 .. code-block:: C

-    int usbd_initialize(void);
+    int usbd_initialize(uint8_t busid, uintptr_t reg_base, usbd_event_handler_t event_handler);

-usbd_event_handler
+- **busid** USB 总线 id
+- **reg_base** USB 设备寄存器基地址
+- **event_handler** 协议栈中断或者状态回调函数，event 事件
+- **return** 返回 0 表示成功，其他值表示失败
+
+event 事件包括：
+
+.. code-block:: C
+
+    USBD_EVENT_ERROR,        /** USB error reported by the controller */
+    USBD_EVENT_RESET,        /** USB reset */
+    USBD_EVENT_SOF,          /** Start of Frame received */
+    USBD_EVENT_CONNECTED,    /** USB connected*/
+    USBD_EVENT_DISCONNECTED, /** USB disconnected */
+    USBD_EVENT_SUSPEND,      /** USB connection suspended by the HOST */
+    USBD_EVENT_RESUME,       /** USB connection resumed by the HOST */
+
+    /* USB DEVICE STATUS */
+    USBD_EVENT_CONFIGURED,        /** USB configuration done */
+    USBD_EVENT_SET_INTERFACE,     /** USB interface selected */
+    USBD_EVENT_SET_REMOTE_WAKEUP, /** USB set remote wakeup */
+    USBD_EVENT_CLR_REMOTE_WAKEUP, /** USB clear remote wakeup */
+    USBD_EVENT_INIT,              /** USB init done when call usbd_initialize */
+    USBD_EVENT_DEINIT,            /** USB deinit done when call usbd_deinitialize */
+    USBD_EVENT_UNKNOWN
+
+.. note:: 大部分 IP USBD_EVENT_CONNECTED 和 USBD_EVENT_DISCONNECTED 事件都不支持，当前仅 HPM 芯片支持，其余芯片自行设计vbus检测电路替代
+
+usbd_deinitialize
 """"""""""""""""""""""""""""""""""""

-``usbd_event_handler`` 是协议栈中中断或者协议栈一些状态的回调函数。大部分 IP 仅支持 USBD_EVENT_RESET 和 USBD_EVENT_CONFIGURED
+``usbd_deinitialize`` 用来反初始化 usb device，关闭 usb 设备时钟、中断等。

 .. code-block:: C

-    void usbd_event_handler(uint8_t event);
+    int usbd_deinitialize(uint8_t busid);
+
+- **busid** USB 总线 id
+- **return** 返回 0 表示成功，其他值表示失败

 CDC ACM
 -----------------
@@ -160,8 +164,9 @@ usbd_cdc_acm_init_intf

 .. code-block:: C

-    struct usbd_interface *usbd_cdc_acm_init_intf(struct usbd_interface *intf);
+    struct usbd_interface *usbd_cdc_acm_init_intf(uint8_t busid, struct usbd_interface *intf);

+- **busid** USB 总线 id
 - **return**  接口句柄

 usbd_cdc_acm_set_line_coding
@@ -171,8 +176,9 @@ usbd_cdc_acm_set_line_coding

 .. code-block:: C

-    void usbd_cdc_acm_set_line_coding(uint8_t intf, struct cdc_line_coding *line_coding);
+    void usbd_cdc_acm_set_line_coding(uint8_t busid, uint8_t intf, struct cdc_line_coding *line_coding);

+- **busid** USB 总线 id
 - **intf** 控制接口号
 - **line_coding** 串口配置

@@ -183,8 +189,9 @@ usbd_cdc_acm_get_line_coding

 .. code-block:: C

-    void usbd_cdc_acm_get_line_coding(uint8_t intf, struct cdc_line_coding *line_coding);
+    void usbd_cdc_acm_get_line_coding(uint8_t busid, uint8_t intf, struct cdc_line_coding *line_coding);

+- **busid** USB 总线 id
 - **intf** 控制接口号
 - **line_coding** 串口配置

@@ -195,8 +202,9 @@ usbd_cdc_acm_set_dtr

 .. code-block:: C

-    void usbd_cdc_acm_set_dtr(uint8_t intf, bool dtr);
+    void usbd_cdc_acm_set_dtr(uint8_t busid, uint8_t intf, bool dtr);

+- **busid** USB 总线 id
 - **intf** 控制接口号
 - **dtr** dtr 为1表示拉低电平，为0表示拉高电平

@@ -207,8 +215,9 @@ usbd_cdc_acm_set_rts

 .. code-block:: C

-    void usbd_cdc_acm_set_rts(uint8_t intf, bool rts);
+    void usbd_cdc_acm_set_rts(uint8_t busid, uint8_t intf, bool rts);

+- **busid** USB 总线 id
 - **intf** 控制接口号
 - **rts** rts 为1表示拉低电平，为0表示拉高电平

@@ -240,8 +249,9 @@ usbd_hid_init_intf

 .. code-block:: C

-    struct usbd_interface *usbd_hid_init_intf(struct usbd_interface *intf, const uint8_t *desc, uint32_t desc_len);
+    struct usbd_interface *usbd_hid_init_intf(uint8_t busid, struct usbd_interface *intf, const uint8_t *desc, uint32_t desc_len);

+- **busid** USB 总线 id
 - **desc** 报告描述符
 - **desc_len** 报告描述符长度

@@ -260,8 +270,9 @@ usbd_msc_init_intf

 .. code-block:: C

-    struct usbd_interface *usbd_msc_init_intf(struct usbd_interface *intf, const uint8_t out_ep, const uint8_t in_ep);
+    struct usbd_interface *usbd_msc_init_intf(uint8_t busid, struct usbd_interface *intf, const uint8_t out_ep, const uint8_t in_ep);

+- **busid** USB 总线 id
 - **out_ep**     out 端点地址
 - **in_ep**      in 端点地址

@@ -272,8 +283,9 @@ usbd_msc_get_cap

 .. code-block:: C

-    void usbd_msc_get_cap(uint8_t lun, uint32_t *block_num, uint16_t *block_size);
+    void usbd_msc_get_cap(uint8_t busid, uint8_t lun, uint32_t *block_num, uint16_t *block_size);

+- **busid** USB 总线 id
 - **lun** 存储逻辑单元，暂时无用，默认支持一个
 - **block_num**  存储扇区个数
 - **block_size**  存储扇区大小
@@ -285,8 +297,10 @@ usbd_msc_sector_read

 .. code-block:: C

-    int usbd_msc_sector_read(uint32_t sector, uint8_t *buffer, uint32_t length);
+    int usbd_msc_sector_read(uint8_t busid, uint8_t lun, uint32_t sector, uint8_t *buffer, uint32_t length);

+- **busid** USB 总线 id
+- **lun** 存储逻辑单元，暂时无用，默认支持一个
 - **sector** 扇区偏移
 - **buffer** 存储读取的数据的指针
 - **length** 读取长度
@@ -299,8 +313,10 @@ usbd_msc_sector_write

 .. code-block:: C

-    int usbd_msc_sector_write(uint32_t sector, uint8_t *buffer, uint32_t length);
+    int usbd_msc_sector_write(uint8_t busid, uint8_t lun, uint32_t sector, uint8_t *buffer, uint32_t length);

+- **busid** USB 总线 id
+- **lun** 存储逻辑单元，暂时无用，默认支持一个
 - **sector** 扇区偏移
 - **buffer** 写入数据指针
 - **length** 写入长度
@@ -318,15 +334,21 @@ usbd_audio_init_intf

 .. code-block:: C

-    struct usbd_interface *usbd_audio_init_intf(struct usbd_interface *intf);
+    struct usbd_interface *usbd_audio_init_intf(uint8_t busid, struct usbd_interface *intf,
+                                                uint16_t uac_version,
+                                                struct audio_entity_info *table,
+                                                uint8_t num);

- **class** 类的句柄
+- **busid** USB 总线 id
 - **intf**  接口句柄
+- **uac_version**  音频类版本，UAC1.0 或 UAC2.0
+- **table** 音频实体信息表
+- **num** 音频实体信息表长度

 usbd_audio_open
 """"""""""""""""""""""""""""""""""""

-``usbd_audio_open``  用来开启音频数据传输。
+``usbd_audio_open``  用来开启音频数据传输。主机发送开启命令的回调函数。

 .. code-block:: C

@@ -337,7 +359,7 @@ usbd_audio_open
 usbd_audio_close
 """"""""""""""""""""""""""""""""""""

-``usbd_audio_close``  用来关闭音频数据传输。
+``usbd_audio_close``  用来关闭音频数据传输。主机发送关闭命令的回调函数。

 .. code-block:: C

@@ -345,18 +367,6 @@ usbd_audio_close

 - **intf** 关闭的接口号

-usbd_audio_add_entity
-""""""""""""""""""""""""""""""""""""
-
-``usbd_audio_add_entity``  用来添加 unit 相关控制，例如 feature unit、clock source。
-
-.. code-block:: C
-
-    void usbd_audio_add_entity(uint8_t entity_id, uint16_t bDescriptorSubtype);
-
- **entity_id** 要添加的 unit id
- **bDescriptorSubtype** entity_id 的描述符子类型
-
 usbd_audio_set_mute
 """"""""""""""""""""""""""""""""""""

@@ -364,10 +374,12 @@ usbd_audio_set_mute

 .. code-block:: C

-    void usbd_audio_set_mute(uint8_t ch, uint8_t enable);
+    void usbd_audio_set_mute(uint8_t busid, uint8_t ep, uint8_t ch, bool mute);

+- **busid** USB 总线 id
+- **ep** 要设置静音的端点
 - **ch** 要设置静音的通道
- **enable** 为1 表示静音，0相反
+- **mute** 为1 表示静音，0相反

 usbd_audio_set_volume
 """"""""""""""""""""""""""""""""""""
@@ -376,10 +388,12 @@ usbd_audio_set_volume

 .. code-block:: C

-    void usbd_audio_set_volume(uint8_t ch, float dB);
+    void usbd_audio_set_volume(uint8_t busid, uint8_t ep, uint8_t ch, int volume_db);

+- **busid** USB 总线 id
+- **ep** 要设置音量的端点
 - **ch** 要设置音量的通道
- **dB** 要设置音量的分贝，其中 UAC1.0范围从 -127 ~ +127dB，UAC2.0 从 0 ~ 256dB
+- **volume_db** 要设置音量的分贝，单位 -100dB ~ 0dB

 usbd_audio_set_sampling_freq
 """"""""""""""""""""""""""""""""""""
@@ -388,34 +402,23 @@ usbd_audio_set_sampling_freq

 .. code-block:: C

-    void usbd_audio_set_sampling_freq(uint8_t ep_ch, uint32_t sampling_freq);
+    void usbd_audio_set_sampling_freq(uint8_t busid, uint8_t ep, uint32_t sampling_freq);

- **ch** 要设置采样率的端点或者通道，UAC1.0为端点，UAC2.0 为通道
- **dB** 要设置的采样率
+- **ep** 要设置采样率的端点
+- **sampling_freq** 要设置的采样率

 usbd_audio_get_sampling_freq_table
 """"""""""""""""""""""""""""""""""""

-``usbd_audio_get_sampling_freq_table``  用来获取支持的采样率列表，如果函数没有实现，则使用默认采样率列表。
+``usbd_audio_get_sampling_freq_table``  用来获取支持的采样率列表，如果函数没有实现，则使用默认采样率列表。 UAC2 only。

 .. code-block:: C

-    void usbd_audio_get_sampling_freq_table(uint8_t **sampling_freq_table);
+    void usbd_audio_get_sampling_freq_table(uint8_t busid, uint8_t ep, uint8_t **sampling_freq_table);

+- **ep** 要获取采样率的端点
 - **sampling_freq_table** 采样率列表地址，格式参考默认采样率列表

-usbd_audio_set_pitch
-""""""""""""""""""""""""""""""""""""
-
-``usbd_audio_set_pitch``  用来设置音频音调，仅 UAC1.0 有这功能。
-
-.. code-block:: C
-
-    void usbd_audio_set_pitch(uint8_t ep, bool enable);
-
- **ep** 要设置音调的端点
- **enable** 开启或关闭音调
-
 UVC
 -----------------

@@ -428,13 +431,15 @@ usbd_video_init_intf

 .. code-block:: C

-    struct usbd_interface *usbd_video_init_intf(struct usbd_interface *intf,
-                                             uint32_t dwFrameInterval,
-                                             uint32_t dwMaxVideoFrameSize,
-                                             uint32_t dwMaxPayloadTransferSize);
-
- **class** 类的句柄
+    struct usbd_interface *usbd_video_init_intf(uint8_t busid, struct usbd_interface *intf,
+                                                uint32_t dwFrameInterval,
+                                                uint32_t dwMaxVideoFrameSize,
+                                                uint32_t dwMaxPayloadTransferSize);
+- **busid** USB 总线 id
 - **intf**  接口句柄
+- **dwFrameInterval** 视频帧间隔，单位 100ns
+- **dwMaxVideoFrameSize** 最大视频帧大小
+- **dwMaxPayloadTransferSize** 最大负载传输大小

 usbd_video_open
 """"""""""""""""""""""""""""""""""""
@@ -458,26 +463,40 @@ usbd_video_close

 - **intf** 关闭的接口号

-usbd_video_payload_fill
+usbd_video_stream_start_write
 """"""""""""""""""""""""""""""""""""

-``usbd_video_payload_fill``  用来填充 mjpeg 到新的 buffer中，其中会对 mjpeg 数据按帧进行切分，切分大小由 ``dwMaxPayloadTransferSize`` 控制，并添加头部信息，当前头部字节数为 2。头部信息见 ``struct video_mjpeg_payload_header``
+``usbd_video_stream_start_write``  用来启动一帧视频数据流发送。需要搭配 `usbd_video_stream_split_transfer` 使用。

 .. code-block:: C

-    uint32_t usbd_video_payload_fill(uint8_t *input, uint32_t input_len, uint8_t *output, uint32_t *out_len);
+    int usbd_video_stream_start_write(uint8_t busid, uint8_t ep, uint8_t *ep_buf, uint8_t *stream_buf, uint32_t stream_len, bool do_copy);

- **input** mjpeg 格式的数据包，从 FFD8~FFD9结束
- **input_len** mjpeg数据包大小
- **output** 输出缓冲区
- **out_len** 输出实际要发送的长度大小
- **return** 返回 usb 按照 ``dwMaxPayloadTransferSize`` 大小要发多少帧
+- **busid** USB 总线 id
+- **ep** 视频数据端点地址
+- **ep_buf** 视频数据端点传输缓冲区
+- **stream_buf** 一帧视频数据源缓冲区
+- **stream_len** 一帧视频数据源缓冲区大小
+- **do_copy** 是否需要将 stream_buf 数据复制到 ep_buf 中，当前仅当 stream_buf 在 nocache 区域并且未开启 DCACHE_ENABLE 时该参数才为 false

-DFU
+usbd_video_stream_split_transfer
+""""""""""""""""""""""""""""""""""""
+
+``usbd_video_stream_split_transfer``  用来分割视频数据流发送。需要搭配 `usbd_video_stream_start_write` 使用。
+
+.. code-block:: C
+
+    int usbd_video_stream_split_transfer(uint8_t busid, uint8_t ep);
+
+- **busid** USB 总线 id
+- **ep** 视频数据端点地址
+- **return** 返回 true 表示一帧数据发送完成，false 表示数据未发送完成
+
+RNDIS
 -----------------

-PRINTER
+CDC ECM
 -----------------

 MTP
-----------------
+-----------------
--- a/docs/source/api/api_host.rst
+++ b/docs/source/api/api_host.rst
@@ -126,10 +126,11 @@ usbh_initialize

 .. code-block:: C

-    int usbh_initialize(uint8_t busid, uint32_t reg_base);
+    int usbh_initialize(uint8_t busid, uint32_t reg_base, usbh_event_handler_t event_handler);

 - **busid**  bus id，从 0开始，不能超过 `CONFIG_USBHOST_MAX_BUS`
 - **reg_base**  hcd 寄存器基地址
+- **event_handler**  host 事件回调函数，可以为NULL
 - **return**  0 表示正常其他表示错误

 usbh_find_class_instance
@@ -153,14 +154,164 @@ lsusb

    int lsusb(int argc, char **argv);

-CDC ACM
+SERIAL
 -----------------

+usbh_serial_open
+""""""""""""""""""""""""""""""""""""
+
+``usbh_serial_open`` 根据路径打开一个串口设备。
+
+.. code-block:: C
+
+    struct usbh_serial *usbh_serial_open(const char *devname, uint32_t open_flags);
+
+- **devname**  串口路径
+- **open_flags**  打开标志，参考 `USBH_SERIAL_OFLAG_*` 定义
+- **return**  serial 结构体句柄
+
+usbh_serial_close
+""""""""""""""""""""""""""""""""""""
+
+``usbh_serial_close`` 关闭串口设备。
+
+.. code-block:: C
+
+    void usbh_serial_close(struct usbh_serial *serial);
+
+- **serial**  serial 结构体句柄
+
+usbh_serial_control
+""""""""""""""""""""""""""""""""""""
+
+``usbh_serial_control`` 对串口进行配置。
+
+.. code-block:: C
+
+    int usbh_serial_control(struct usbh_serial *serial, int cmd, void *arg);
+
+- **serial**  serial 结构体句柄
+- **cmd**  控制命令，参考 `USBH_SERIAL_CMD_*` 定义
+- **arg**  控制参数指针
+- **return**  0 表示正常其他表示错误
+
+usbh_serial_write
+""""""""""""""""""""""""""""""""""""
+
+``usbh_serial_write`` 向串口写数据。
+
+.. code-block:: C
+
+    int usbh_serial_write(struct usbh_serial *serial, const void *buffer, uint32_t buflen);
+
+- **serial**  serial 结构体句柄
+- **buffer**  数据缓冲区指针
+- **buflen**  要写入的数据长度
+- **return**  实际写入的数据长度或者错误码
+
+.. note:: 如果没有开启 CONFIG_USB_DCACHE_ENABLE，则 buffer 需要是 nocache区域，否则需要是对齐到 CONFIG_USB_ALIGN_SIZE 的区域。
+
+usbh_serial_read
+""""""""""""""""""""""""""""""""""""
+
+``usbh_serial_read`` 从串口读数据。 **如果没有设置波特率，不允许使用该 API，设置波特率后，内部会开启 rx 接收并将数据写入 ringbuf **。
+
+.. code-block:: C
+
+    int usbh_serial_read(struct usbh_serial *serial, void *buffer, uint32_t buflen);
+
+- **serial**  serial 结构体句柄
+- **buffer**  数据缓冲区指针
+- **buflen**  要读取的最大数据长度
+- **return**  实际读取的数据长度或者错误码
+
+.. note::  由于内部使用了 ringbuffer，对于用户的 buffer 属性没有限制。
+
+usbh_serial_cdc_write_async
+""""""""""""""""""""""""""""""""""""
+
+``usbh_serial_cdc_write_async`` 异步从串口读数据。 **如果设置了波特率，不允许使用该 API**。
+
+.. code-block:: C
+
+    int usbh_serial_cdc_write_async(struct usbh_serial *serial, uint8_t *buffer, uint32_t buflen, usbh_complete_callback_t complete, void *arg);
+
+- **serial**  serial 结构体句柄
+- **buffer**  数据缓冲区指针
+- **buflen**  要发送的数据长度
+- **complete**  读数据完成回调函数
+- **arg**  回调函数参数
+- **return**  0 表示正常其他表示错误
+
+.. note:: 如果没有开启 CONFIG_USB_DCACHE_ENABLE，则 buffer 需要是 nocache区域，否则需要是对齐到 CONFIG_USB_ALIGN_SIZE 的区域。
+
+usbh_serial_cdc_read_async
+""""""""""""""""""""""""""""""""""""
+
+``usbh_serial_cdc_read_async`` 异步从串口读数据。 **如果设置了波特率，不允许使用该 API，设置波特率后，内部会开启 rx 接收并将数据写入 ringbuf **。
+
+.. code-block:: C
+
+    int usbh_serial_cdc_read_async(struct usbh_serial *serial, uint8_t *buffer, uint32_t buflen, usbh_complete_callback_t complete, void *arg);
+
+- **serial**  serial 结构体句柄
+- **buffer**  数据缓冲区指针
+- **buflen**  要读取的最大数据长度，一次最高 16K。并且需要是 wMaxPacketSize 的整数倍
+- **complete**  读数据完成回调函数
+- **arg**  回调函数参数
+- **return**  0 表示正常其他表示错误
+
+.. note:: 如果没有开启 CONFIG_USB_DCACHE_ENABLE，则 buffer 需要是 nocache区域，否则需要是对齐到 CONFIG_USB_ALIGN_SIZE 的区域。
+
 HID
 -----------------

 MSC
 -----------------

-RNDIS
-----------------
+usbh_msc_scsi_init
+""""""""""""""""""""""""""""""""""""
+
+``usbh_msc_scsi_init`` 初始化 msc scsi 设备。获取 MSC 状态和容量信息。
+
+.. code-block:: C
+
+    int usbh_msc_scsi_init(struct usbh_msc *msc_class);
+
+- **msc_class**  msc 结构体句柄
+- **return**  0 表示正常其他表示错误
+
+usbh_msc_scsi_write10
+""""""""""""""""""""""""""""""""""""
+
+``usbh_msc_scsi_write10`` 向 msc 设备写数据。
+
+.. code-block:: C
+
+    int usbh_msc_scsi_write10(struct usbh_msc *msc_class, uint32_t start_sector, const uint8_t *buffer, uint32_t nsectors);
+
+- **msc_class**  msc 结构体句柄
+- **start_sector**  起始扇区
+- **buffer**  数据缓冲区指针
+- **nsectors**  要写入的扇区数
+- **return**  返回 0 表示正常其他表示错误
+
+usbh_msc_scsi_read10
+""""""""""""""""""""""""""""""""""""
+
+``usbh_msc_scsi_read10`` 从 msc 设备读数据。
+
+.. code-block:: C
+
+    int usbh_msc_scsi_read10(struct usbh_msc *msc_class, uint32_t start_sector, uint8_t *buffer, uint32_t nsectors);
+
+- **msc_class**  msc 结构体句柄
+- **start_sector**  起始扇区
+- **buffer**  数据缓冲区指针
+- **nsectors**  要读取的扇区数
+- **return**  返回 0 表示正常其他表示错误
+
+NETWORK
+-----------------
+
+已对接 lwIP 协议栈或者其他网络协议栈，使用 socket API 即可。
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -6,8 +6,8 @@ project = 'CherryUSB'
 copyright = '2022 ~ 2025, sakumisu'
 author = 'sakumisu'

-release = '1.5.3'
-version = '1.5.3'
+release = '1.6.0'
+version = '1.6.0'

 # -- General configuration

--- a/docs/source/demo/img/usbh_serial.png
+++ b/docs/source/demo/img/usbh_serial.png
--- a/docs/source/demo/usbd_webusb.rst
+++ b/docs/source/demo/usbd_webusb.rst
@@ -15,7 +15,7 @@ usbd_webusb

 .. code-block:: C

-USB_INTERFACE_DESCRIPTOR_INIT(USBD_WEBUSB_INTF_NUM, 0x00, 0x00, 0xff, 0x00, 0x00, 0x00)
+    USB_INTERFACE_DESCRIPTOR_INIT(USBD_WEBUSB_INTF_NUM, 0x00, 0x00, 0xff, 0x00, 0x00, 0x00)

 - 其余使用 hid 描述符，不再赘述
 - 枚举完成后，电脑右下角会弹出网页信息，点击即可打开网页
--- a/docs/source/demo/usbh_net.rst
+++ b/docs/source/demo/usbh_net.rst
@@ -1,11 +1,19 @@
 usbh_net
 ===============

-本节主要介绍 USB 网卡的使用，USB 网卡推荐采用 AIR780(RNDIS)，EC20(ECM/RNDIS), 手机（RNDIS）,RTL8152 USB 网卡，AX88772 USB 网卡。
+本节主要介绍 USB 网卡的使用，当前已经支持和测试以下 USB 网卡:

-USB 网卡传输层面已经对接好了 LWIP 的收发接口，因此，用户只需要包含 **platform/XXX/usbh_lwip.c** 并根据需要开启对应的网卡类的宏即可。
+- 4G 网卡：EC20(ECM/RNDIS)、手机（RNDIS）、SIMCOM7600(RNDIS)、ML307R(RNDIS)、AIR780(RNDIS)

- 当前支持以下网卡类：
+.. caution:: 请注意，部分 4G 网卡默认不带自动拨号功能，请更换固件或者使用 AT 配置成自动拨号，否则无法获取 IP。
+
+- USB 以太网卡：ASIX AX88772，REALTEK RTL8152
+- USB WIFI 网卡： 博流 BL616（RNDIS/ECM）
+
+USB 网卡相关的宏和文件
+------------------------
+
+网卡相关的宏如下，主要用于根据不同的网络组件注册网卡驱动：

 .. code-block:: C

@@ -14,34 +22,24 @@ USB 网卡传输层面已经对接好了 LWIP 的收发接口，因此，用户
    // #define CONFIG_USBHOST_PLATFORM_CDC_NCM
    // #define CONFIG_USBHOST_PLATFORM_ASIX
    // #define CONFIG_USBHOST_PLATFORM_RTL8152
-    // #define CONFIG_USBHOST_PLATFORM_BL616

- 包含了对接 LWIP 的输入输出接口，举例如下
+.. note:: 如果使用了 Kconfig 系统，上述宏自定生成，其他平台请手动定义。

-.. code-block:: C
+USB 网卡传输层面已经对接好了相关网络组件，列举如下：

-    static err_t usbh_cdc_ecm_linkoutput(struct netif *netif, struct pbuf *p)
-    {
-        int ret;
-        (void)netif;
+- 自定义 OS + LWIP 请使用 **platform/lwip/usbh_lwip.c**，需要自行包含该文件，并使能上述相关的宏。并在初始化 USB 之前调用 `tcpip_init(NULL, NULL)`
+- RT-THREAD + LWIP 请使用 **platform/rtthread/usbh_lwip.c**，在 Kconfig 中使能对应的网卡驱动后自动勾选该文件，勾选 rt-thread lwip以后自动调用 `tcpip_init(NULL, NULL)`
+- ESP-IDF + LWIP 请使用 **platform/freertos/usbh_net.c**，在 Kconfig 中使能对应的网卡驱动后自动勾选该文件，并且在初始化 USB 之前调用 `esp_netif_init()` + `esp_event_loop_create_default()`
+- NUTTX + NUTTX 网络组件 请使用 **platform/nuttx/usbh_net.c**，在 Kconfig 中使能对应的网卡驱动后自动勾选该文件，勾选网络组件以后自动调用

-        usbh_lwip_eth_output_common(p, usbh_cdc_ecm_get_eth_txbuf());
-        ret = usbh_cdc_ecm_eth_output(p->tot_len);
-        if (ret < 0) {
-            return ERR_BUF;
-        } else {
-            return ERR_OK;
-        }
-    }
+.. note:: 如果是自行添加代码，别忘了添加  USB 网卡驱动相关的源文件，例如 **class/usbh_cdc_ecm.c**。所以我们推荐搭配对应平台使用哦，省去自己添加文件的麻烦

-    void usbh_cdc_ecm_eth_input(uint8_t *buf, uint32_t buflen)
-    {
-        usbh_lwip_eth_input_common(&g_cdc_ecm_netif, buf, buflen);
-    }
+USB 网卡对接过程
+-------------------

+下面举例对接 LWIP 的对接过程。

- 网卡类枚举完成后，注册 netif，并且创建网卡接收线程（因此使用 RTTHREAD 时不需要使用 RTT 的接收线程模块）。
- 必须开启 DHCP client 服务，用于从 USB 网卡获取 IP 地址。
+- 在 USB 网卡枚举完成以后，会 **自动** 调用 `usbh_xxx_run` 函数，此时注册 netif 驱动，并且开启 DHCP 客户端和获取 IP 的定时器。

 .. code-block:: C

@@ -75,17 +73,61 @@ USB 网卡传输层面已经对接好了 LWIP 的收发接口，因此，用户
    #endif
    }

- 获取到 IP 以后，就与 USB 没有关系了，直接使用 LWIP 的接口即可。
+- `usbh_lwip_eth_output_common` 用于将发送 pbuf 组装成 USB 网卡数据包
+- `usbh_lwip_eth_input_common` 用于将 USB 网卡数据组装成 pbuf
+- 实际网卡发送和接收处理

- 需要注意以下参数
+.. code-block:: C

-LWIP_TCPIP_CORE_LOCKING_INPUT 用于不使用 lwip 内置的 tcpip 线程，而使用 USB 自己的处理线程。
+    static err_t usbh_cdc_ecm_linkoutput(struct netif *netif, struct pbuf *p)
+    {
+        int ret;
+        (void)netif;

-LWIP_TCPIP_CORE_LOCKING 在现在 lwip 版本中默认是打开的，也推荐必须打开。
+        usbh_lwip_eth_output_common(p, usbh_cdc_ecm_get_eth_txbuf());
+        ret = usbh_cdc_ecm_eth_output(p->tot_len);
+        if (ret < 0) {
+            return ERR_BUF;
+        } else {
+            return ERR_OK;
+        }
+    }

-PBUF_POOL_BUFSIZE 推荐大于1600，搭配 LWIP_TCPIP_CORE_LOCKING_INPUT 使用，因为我们提供了使用 zero mempy 的方式，使用静态 pbuf，而不是把数据 copy 到 pbuf 中。
+    void usbh_cdc_ecm_eth_input(uint8_t *buf, uint32_t buflen)
+    {
+        usbh_lwip_eth_input_common(&g_cdc_ecm_netif, buf, buflen);
+    }

-TCPIP_THREAD_STACKSIZE 推荐大于 1K，防止栈溢出。
+- USB 网卡 拔出以后会 **自动** 调用 `usbh_xxx_stop` 函数，此时需要停止 DHCP 客户端，删除定时器，并且移除 netif。
+
+.. code-block:: C
+
+    void usbh_cdc_ecm_stop(struct usbh_cdc_ecm *cdc_ecm_class)
+    {
+        struct netif *netif = &g_cdc_ecm_netif;
+        (void)cdc_ecm_class;
+
+    #if LWIP_DHCP
+        dhcp_stop(netif);
+        dhcp_cleanup(netif);
+        usb_osal_timer_delete(dhcp_handle);
+    #endif
+        netif_set_down(netif);
+        netif_remove(netif);
+    }
+
+- 因为 USB 网卡内部已经对接了LWIP，因此用户可以直接使用 LWIP 的 API，无需关心 USB 的实现。
+
+USB 网卡 LWIP 配置宏相关注意事项
+------------------------------------
+
+**LWIP_TCPIP_CORE_LOCKING_INPUT** 用于不使用 lwip 内置的 tcpip 线程，而使用 USB 自己的接收处理线程。
+
+**LWIP_TCPIP_CORE_LOCKING** 在现在 lwip 版本中默认是打开的，也推荐必须打开。
+
+**PBUF_POOL_BUFSIZE** 推荐大于1600，搭配 LWIP_TCPIP_CORE_LOCKING_INPUT 使用，因为我们提供了使用 zero mempy 的方式，使用静态 pbuf，而不是把数据 copy 到 pbuf 中。
+
+**TCPIP_THREAD_STACKSIZE** 推荐大于 1K，防止栈溢出。

 .. code-block:: C

@@ -105,4 +147,10 @@ TCPIP_THREAD_STACKSIZE 推荐大于 1K，防止栈溢出。
    #error TCPIP_THREAD_STACKSIZE must be >= 1024
    #endif

- 具体移植文章可以参考 https://club.rt-thread.org/ask/article/5cf3e9e0b2d95800.html
+
+总结
+--------------
+
+.. note:: 通过以上内容，我们可以看到 CherryUSB 对 USB 网卡的支持是非常完善的，用户只需要使能对应的宏或者勾选，就可以实现 USB 网卡的自动识别和驱动注册，无需手动初始化网卡相关配置，用户只需关注应用层，极大地方便了用户的使用。
+
+具体移植文章可以参考开发者的一些笔记 https://club.rt-thread.org/ask/article/5cf3e9e0b2d95800.html
--- a/docs/source/demo/usbh_serial.rst
+++ b/docs/source/demo/usbh_serial.rst
@@ -1,4 +1,196 @@
 usbh_serial
 ===============

-当前仅支持 rt-thread device 框架，包括 cdc acm, ftdi, cp210x, ch34x, pl2303, 具体使用方式参考 rt-thread device api 即可。
+Serial 框架当前支持 cdc acm, ftdi, cp210x, ch34x, pl2303，gsm 驱动。
+
+.. figure:: img/usbh_serial.png
+
+当前支持两种使用方式，一种是使用源生 CherryUSB usbhost serial API 进行操作，另一种是基于平台封装的 API 操作，比如 rt-thread device API，nuttx posix API。
+
+下面演示的是使用 CherryUSB usbhost serial API 进行串口回环测试，并且使用阻塞发送，异步读取的方式：
+
+.. code-block:: C
+
+    struct usbh_serial *serial;
+
+    serial = usbh_serial_open("/dev/ttyACM0", USBH_SERIAL_O_RDWR | USBH_SERIAL_O_NONBLOCK);
+    if (serial == NULL) {
+        serial = usbh_serial_open("/dev/ttyUSB0", USBH_SERIAL_O_RDWR | USBH_SERIAL_O_NONBLOCK);
+        if (serial == NULL) {
+            USB_LOG_RAW("no serial device found\r\n");
+            goto delete;
+        }
+    }
+
+    struct usbh_serial_termios termios;
+
+    memset(&termios, 0, sizeof(termios));
+    termios.baudrate = 115200;
+    termios.stopbits = 0;
+    termios.parity = 0;
+    termios.databits = 8;
+    termios.rtscts = false;
+    termios.rx_timeout = 0;
+    ret = usbh_serial_control(serial, USBH_SERIAL_CMD_SET_ATTR, &termios);
+    if (ret < 0) {
+        USB_LOG_RAW("set serial attr error, ret:%d\r\n", ret);
+        goto delete_with_close;
+    }
+
+    serial_tx_bytes = 0;
+    while (1) {
+        ret = usbh_serial_write(serial, serial_tx_buffer, sizeof(serial_tx_buffer));
+        if (ret < 0) {
+            USB_LOG_RAW("serial write error, ret:%d\r\n", ret);
+            goto delete_with_close;
+        } else {
+            serial_tx_bytes += ret;
+
+            if (serial_tx_bytes == SERIAL_TEST_LEN) {
+                USB_LOG_RAW("send over\r\n");
+                break;
+            }
+        }
+    }
+
+    volatile uint32_t wait_timeout = 0;
+    serial_rx_bytes = 0;
+    while (1) {
+        ret = usbh_serial_read(serial, &serial_rx_data[serial_rx_bytes], SERIAL_TEST_LEN - serial_rx_bytes);
+        if (ret < 0) {
+            USB_LOG_RAW("serial read error, ret:%d\r\n", ret);
+            goto delete_with_close;
+        } else {
+            serial_rx_bytes += ret;
+
+            if (serial_rx_bytes == SERIAL_TEST_LEN) {
+                USB_LOG_RAW("receive over\r\n");
+                for (uint32_t i = 0; i < SERIAL_TEST_LEN; i++) {
+                    if (serial_rx_data[i] != 0xa5) {
+                        USB_LOG_RAW("serial loopback data error at index %d, data: 0x%02x\r\n", (unsigned int)i, serial_rx_data[i]);
+                        goto delete_with_close;
+                    }
+                }
+                serial_test_success = true;
+                break;
+            }
+        }
+        wait_timeout++;
+
+        if (wait_timeout > 500) { // 5s
+            USB_LOG_RAW("serial read timeout\r\n");
+            goto delete_with_close;
+        }
+
+        usb_osal_msleep(10);
+    }
+
+    usbh_serial_close(serial);
+
+.. caution:: 需要注意，例程中使用的是比较简单的先发送后读取的方式，因此发送的总长度不可以超过 CONFIG_USBHOST_SERIAL_RX_SIZE，正常使用 TX/RX 请分开进行。
+
+用户需要考虑以下三种场景：
+
+- USB2TTL 设备 + 启用了波特率（USB2TTL设备必须启用波特率），这种情况下需要使用 `usbh_serial_write` 和 `usbh_serial_read` 进行收发数据， **并且 read 操作需要及时，防止 ringbuf 数据溢出而丢包**。不可以使用 `usbh_serial_cdc_write_async` 和 `usbh_serial_cdc_read_async`
+
+- 纯 USB 设备 + 未启动波特率，这种情况下可以使用 `usbh_serial_cdc_write_async` 和 `usbh_serial_cdc_read_async` 进行异步收发数据。阻塞则可以用 `usbh_serial_write` ，不可以使用 `usbh_serial_read`。
+
+- 纯 USB 设备 + 启动波特率，同 1，但是接收速率会打折扣（因为多了一层 ringbuf）。此时也不可以使用 `usbh_serial_cdc_write_async` 和 `usbh_serial_cdc_read_async`。 **如果是 GSM 设备请使用第一种场景**。
+
+.. note:: 简单来说就是，如果接收数据需要用到ringbuf转一层的，请使用第一种场景。
+
+.. code-block:: C
+
+    [I/usbh_hub] New full-speed device on Bus 0, Hub 1, Port 1 connected
+    [I/usbh_core] New device found,idVendor:10c4,idProduct:ea60,bcdDevice:0100
+    [I/usbh_core] The device has 1 bNumConfigurations
+    [I/usbh_core] The device has 1 interfaces
+    [I/usbh_core] Enumeration success, start loading class driver
+    [I/usbh_core] Loading cp210x class driver on interface 0
+    [I/usbh_cp210x] chip partnum: 0x02
+    [I/usbh_cp210x] ulAmountInInQueue: 0, ulAmountInOutQueue: 0
+    [I/usbh_serial] Ep=81 Attr=02 Mps=64 Interval=00 Mult=00
+    [I/usbh_serial] Ep=01 Attr=02 Mps=64 Interval=00 Mult=00
+    [I/usbh_serial] Register Serial Class: /dev/ttyUSB0 (cp210x)
+    start serial loopback test, len: 1024
+    send over
+    receive over
+    serial loopback test success
+    [I/usbh_serial] Unregister Serial Class: /dev/ttyUSB0 (cp210x)
+    [I/usbh_core] Device on Bus 0, Hub 1, Port 1 disconnected
+    [I/usbh_hub] New high-speed device on Bus 0, Hub 1, Port 1 connected
+    [I/usbh_core] New device found,idVendor:0403,idProduct:6010,bcdDevice:0700
+    [I/usbh_core] The device has 1 bNumConfigurations
+    [I/usbh_core] The device has 2 interfaces
+    [I/usbh_core] Enumeration success, start loading class driver
+    [I/usbh_core] Loading ftdi class driver on interface 0
+    [I/usbh_ftdi] chip name: FT2232H
+    [I/usbh_serial] Ep=81 Attr=02 Mps=512 Interval=00 Mult=00
+    [I/usbh_serial] Ep=02 Attr=02 Mps=512 Interval=00 Mult=00
+    [I/usbh_serial] Register Serial Class: /dev/ttyUSB0 (ftdi)
+    [I/usbh_core] Loading ftdi class driver on interface 1
+    [I/usbh_ftdi] chip name: FT2232H
+    [I/usbh_serial] Ep=83 Attr=02 Mps=512 Interval=00 Mult=00
+    [I/usbh_serial] Ep=04 Attr=02 Mps=512 Interval=00 Mult=00
+    [I/usbh_serial] Register Serial Class: /dev/ttyUSB1 (ftdi)
+    start serial loopback test, len: 1024
+    send over
+    receive over
+    serial loopback test success
+    [I/usbh_serial] Unregister Serial Class: /dev/ttyUSB0 (ftdi)
+    [I/usbh_serial] Unregister Serial Class: /dev/ttyUSB1 (ftdi)
+    [I/usbh_core] Device on Bus 0, Hub 1, Port 1 disconnected
+    [I/usbh_hub] New full-speed device on Bus 0, Hub 1, Port 1 connected
+    [I/usbh_core] New device found,idVendor:067b,idProduct:2303,bcdDevice:0300
+    [I/usbh_core] The device has 1 bNumConfigurations
+    [I/usbh_core] The device has 1 interfaces
+    [I/usbh_core] Enumeration success, start loading class driver
+    [I/usbh_core] Loading pl2303 class driver on interface 0
+    [I/usbh_pl2303] Ep=81 Attr=03 Mps=10 Interval=01 Mult=00
+    [I/usbh_pl2303] chip type: PL2303HX
+    [I/usbh_serial] Ep=02 Attr=02 Mps=64 Interval=00 Mult=00
+    [I/usbh_serial] Ep=83 Attr=02 Mps=64 Interval=00 Mult=00
+    [I/usbh_serial] Register Serial Class: /dev/ttyUSB0 (pl2303)
+    start serial loopback test, len: 1024
+    send over
+    receive over
+    serial loopback test success
+    [I/usbh_serial] Unregister Serial Class: /dev/ttyUSB0 (pl2303)
+    [I/usbh_core] Device on Bus 0, Hub 1, Port 1 disconnected
+    [W/usbh_hub] Failed to enable port 1
+    [I/usbh_hub] New full-speed device on Bus 0, Hub 1, Port 1 connected
+    [I/usbh_core] New device found,idVendor:1a86,idProduct:7523,bcdDevice:0264
+    [I/usbh_core] The device has 1 bNumConfigurations
+    [I/usbh_core] The device has 1 interfaces
+    [I/usbh_core] Enumeration success, start loading class driver
+    [I/usbh_core] Loading ch34x class driver on interface 0
+    [I/usbh_ch43x] Ep=81 Attr=03 Mps=8 Interval=01 Mult=00
+    [I/usbh_ch43x] chip version: 0x31
+    [I/usbh_serial] Ep=82 Attr=02 Mps=32 Interval=00 Mult=00
+    [I/usbh_serial] Ep=02 Attr=02 Mps=32 Interval=00 Mult=00
+    [I/usbh_serial] Register Serial Class: /dev/ttyUSB0 (ch34x)
+    start serial loopback test, len: 1024
+    send over
+    receive over
+    serial loopback test success
+    [I/usbh_serial] Unregister Serial Class: /dev/ttyUSB0 (ch34x)
+    [I/usbh_core] Device on Bus 0, Hub 1, Port 1 disconnected
+    [I/usbh_hub] New full-speed device on Bus 0, Hub 1, Port 1 connected
+    [I/usbh_core] New device found,idVendor:42bf,idProduct:b210,bcdDevice:0217
+    [I/usbh_core] The device has 1 bNumConfigurations
+    [I/usbh_core] The device has 3 interfaces
+    [I/usbh_core] Enumeration success, start loading class driver
+    [E/usbh_core] Do not support Class:0xff, Subclass:0x01, Protocl:0x00 on interface 0
+    [I/usbh_core] Loading cdc_acm class driver on interface 1
+    [I/usbh_cdc_acm] Ep=85 Attr=03 Mps=64 Interval=00 Mult=00
+    [I/usbh_serial] Ep=04 Attr=02 Mps=64 Interval=00 Mult=00
+    [I/usbh_serial] Ep=83 Attr=02 Mps=64 Interval=00 Mult=00
+    [I/usbh_serial] Register Serial Class: /dev/ttyACM0 (cdc_acm)
+    [I/usbh_core] Loading cdc_data class driver on interface 2
+    start serial loopback test, len: 1024
+    send over
+    receive over
+    serial loopback test success
+    [I/usbh_serial] Unregister Serial Class: /dev/ttyACM0 (cdc_acm)
+    [I/usbh_core] Device on Bus 0, Hub 1, Port 1 disconnected
+
--- a/docs/source/index.rst
+++ b/docs/source/index.rst
@@ -57,6 +57,7 @@ CherryUSB 是一个小而美的、可移植性高的、用于嵌入式系统的
   quick_start/transplant
   quick_start/rtthread
   quick_start/q&a
+   quick_start/migration
   quick_start/share
   quick_start/opensource

--- a/docs/source/quick_start/demo.rst
+++ b/docs/source/quick_start/demo.rst
@@ -218,7 +218,7 @@ USB Host 移植要点

 - 链接脚本修改参考 :ref:`usbh_link_script` 章节
 - 如果芯片带 cache，cache 修改参考 :ref:`usb_cache` 章节
- 调用 `usbh_initialize` 并填入 `busid` 和 USB IP 的 `reg base`， `busid` 从 0 开始，不能超过 `CONFIG_USBHOST_MAX_BUS`
+- 调用 `usbh_initialize` 并填入 `busid` 和 USB IP 的 `reg base` 还有 `event_handler` 可缺省为NULL， `busid` 从 0 开始，不能超过 `CONFIG_USBHOST_MAX_BUS`
 - 启动线程

 .. figure:: img/stm32_18.png
--- a/docs/source/quick_start/migration.rst
+++ b/docs/source/quick_start/migration.rst
@@ -0,0 +1,63 @@
+部分改动迁移指南
+========================
+
+
+usbh_initialize
+------------------
+
+usbh_initialize 从 v1.6.0 开始新增 event_handler 参数，通常不需要使用，可以传入 NULL。
+
+dwc2 glue st
+----------------
+
+dwc2 从 v1.5.0 开始 glue 文件内置底层初始化，比如 `usb_dc_low_level_init`，底层依赖 `HAL_PCD_MspInit` 和 `HAL_HCD_MspInit`，必须使用 stm32cubemx 生成。第三方平台不保证有这些函数实现，自行检查。
+
+
+dwc2 glue
+----------------
+
+dwc2 从 v1.5.1 开始新增 `struct dwc2_user_params`，用于实现多 dwc2 port 不同配置。并替代 `usbd_get_dwc2_gccfg_conf` 和 `usbh_get_dwc2_hccfg_conf` 函数，
+并增加 `dwc2_get_user_params` 函数实现，举例如下：
+
+.. code-block:: C
+
+    #ifndef CONFIG_USB_DWC2_CUSTOM_PARAM
+    void dwc2_get_user_params(uint32_t reg_base, struct dwc2_user_params *params)
+    {
+        memcpy(params, &param_common, sizeof(struct dwc2_user_params));
+    #ifdef CONFIG_USB_DWC2_CUSTOM_FIFO
+        struct usb_dwc2_user_fifo_config s_dwc2_fifo_config;
+
+        dwc2_get_user_fifo_config(reg_base, &s_dwc2_fifo_config);
+
+        params->device_rx_fifo_size = s_dwc2_fifo_config.device_rx_fifo_size;
+        for (uint8_t i = 0; i < MAX_EPS_CHANNELS; i++) {
+            params->device_tx_fifo_size[i] = s_dwc2_fifo_config.device_tx_fifo_size[i];
+        }
+    #endif
+    }
+    #endif
+
+host serial
+----------------
+
+从 v1.6.0 开始，主机增加 host serial 框架，用于统一所有类串口设备。以下 API 需要使用新 serial API 替换：
+
+.. code-block:: C
+
+    int usbh_xxx_set_line_coding(struct usbh_xxx *xxx_class, struct cdc_line_coding *line_coding);
+    int usbh_xxx_get_line_coding(struct usbh_xxx *xxx_class, struct cdc_line_coding *line_coding);
+    int usbh_xxx_set_line_state(struct usbh_xxx *xxx_class, bool dtr, bool rts);
+
+    int usbh_xxx_bulk_in_transfer(struct usbh_xxx *xxx_class, uint8_t *buffer, uint32_t buflen, uint32_t timeout);
+    int usbh_xxx_bulk_out_transfer(struct usbh_xxx *xxx_class, uint8_t *buffer, uint32_t buflen, uint32_t timeout);
+
+替换为：
+
+.. code-block:: C
+
+    struct usbh_serial *usbh_serial_open(const char *devname, uint32_t open_flags);
+    int usbh_serial_close(struct usbh_serial *serial);
+    int usbh_serial_control(struct usbh_serial *serial, int cmd, void *arg);
+    int usbh_serial_write(struct usbh_serial *serial, const void *buffer, uint32_t buflen);
+    int usbh_serial_read(struct usbh_serial *serial, void *buffer, uint32_t buflen);
--- a/docs/source/quick_start/q&a.rst
+++ b/docs/source/quick_start/q&a.rst
@@ -115,10 +115,23 @@ Failed to enable port
 USB_ERR_NAK 说明
 ----------------------------------------------------------------

-USB_ERR_NAK 只存在于 DWC2 buffer dma 模式，DWC2 在 buffer dma模式下对于中断传输不支持硬件处理 NAK 中断，因此需要软件处理，导致 NAK 中断非常多，建议搭配定时器使用。
-DWC2 scatter/gather dma 模式下全部由硬件处理，但是不支持 split 传输。总结， **半斤 IP**。
+USB_ERR_NAK 只存在于 DWC2 buffer dma/slave 模式(我们不使用 slave 模式)，DWC2 在 buffer dma模式下对于中断传输不支持硬件处理 NAK 中断，因此需要软件处理，导致 NAK 中断非常多，建议搭配定时器使用。
+DWC2 scatter/gather dma 模式下全部由硬件处理，但是不支持 split 传输。总结， **食之无味，弃之可惜**。

 USB host 连接 USB 网卡问题
 ----------------------------------------------------------------

 表现为能识别网卡并且分配到 IP 地址，但是无法 ping 通，这是因为网卡自身需要开启自动拨号，通常需要使用 AT 口设置。具体为 EC20/ML307 等模块。
+
+
+什么时候需要开启 CONFIG_USB_DCACHE_ENABLE
+-------------------------------------------------
+
+当芯片带有 cache 功能，并且没有使用 no cache ram 时需要开启此宏以保证数据一致性。 **使用 EHCI 时，内部依旧需要使用 nocache ram**。通常，对于第三方平台或者组件，没有使用 no cache ram 宏修饰，都是使用全局变量或者 malloc 等
+操作，这部分 RAM 通常是走 cache 的，因此需要开启此宏。建议第三方平台使用时，必须开启。
+
+哪些 IP 对数据有对齐要求
+-------------------------------------------------
+
+- 在未开启 CONFIG_USB_DCACHE_ENABLE 时，仅 DWC2/WCH/AIC IP 需要 4字节对齐，其余 1字节对齐即可。
+- 在开启 CONFIG_USB_DCACHE_ENABLE 时，所有 IP 都需要对齐到 CONFIG_USB_ALIGN_SIZE 字节
--- a/docs/source/quick_start/rtthread.rst
+++ b/docs/source/quick_start/rtthread.rst
@@ -56,7 +56,7 @@
 * USB IP 相关的 config 需要用户自己根据芯片实际情况修改
 * 在代码中实现 `usb_hc_low_level_init` 函数
 * 在 USB 中断函数中调用 `USBH_IRQHandler`，并传入 `busid`
-* 调用 `usbh_initialize` 并填入 `busid` 和 USB IP 的 `reg base`， `busid` 从 0 开始，不能超过 `CONFIG_USBHOST_MAX_BUS`
+* 调用 `usbh_initialize` 并填入 `busid` 和 USB IP 的 `reg base` 还有 `event_handler` 可缺省为NULL， `busid` 从 0 开始，不能超过 `CONFIG_USBHOST_MAX_BUS`
 * 使用 `scons --target=mdk5` 或者 `scons` 进行编译，如果是mdk，需要使用 AC6 编译器
 * 链接脚本修改参考 :ref:`usbh_link_script` 章节
 * 如果芯片带 cache，cache 修改参考 :ref:`usb_cache` 章节
--- a/docs/source/quick_start/transplant.rst
+++ b/docs/source/quick_start/transplant.rst
@@ -19,11 +19,11 @@ USB Host 移植要点
 - 拷贝 CherryUSB 源码到工程目录下，并按需添加源文件和头文件路径，头文件路径建议全部添加。其中 `usbh_core.c` 、 `usb_hc_xxx.c` 以及 **osal** 目录下源文件（根据不同的 os 选择对应的源文件）为必须添加项。而 `usb_hc_xxx.c` 是芯片所对应的 USB IP hcd 部分驱动，如果不知道自己芯片属于那个 USB IP，参考 **port** 目录下的不同 USB IP 的 readme。如果使用的 USB IP 没有支持，只能自己实现了
 - 拷贝 `cherryusb_config_template.h` 文件到自己工程目录下，命名为 `usb_config.h`，并添加相应的目录头文件路径
 - 实现 `usb_hc_low_level_init` 函数（该函数主要负责 USB 时钟、引脚、中断的初始化）。该函数可以放在你想要放的任何参与编译的 c 文件中。如何进行 USB 的时钟、引脚、中断等初始化，请自行根据你使用的芯片原厂提供的源码中进行添加。
- 调用 `usbh_initialize` 并填入 `busid` 和 USB IP 的 `reg base`， `busid` 从 0 开始，不能超过 `CONFIG_USBHOST_MAX_BUS`
+- 调用 `usbh_initialize` 并填入 `busid` 和 USB IP 的 `reg base` 还有 `event_handler` 可缺省为NULL， `busid` 从 0 开始，不能超过 `CONFIG_USBHOST_MAX_BUS`
 - 在中断函数中调用 `USBH_IRQHandler`，并传入 `busid`, 如果你的 SDK 中中断入口已经存在 `USBH_IRQHandler` ，请更改 USB 协议栈中的名称
 - 链接脚本修改参考 :ref:`usbh_link_script` 章节
 - 如果芯片带 cache，cache 修改参考 :ref:`usb_cache` 章节
- 调用 `usbh_initialize` ，填入 `busid` 和 USB IP 的 `reg base`， `busid` 从 0 开始，不能超过 `CONFIG_USBHOST_MAX_BUS` 。基础的 cdc + hid + msc 参考 `usb_host.c` 文件，其余参考 **platform** 目录下适配
+- 调用 `usbh_initialize` ，填入 `busid` 和 USB IP 的 `reg base` 还有 `event_handler` 可缺省为NULL， `busid` 从 0 开始，不能超过 `CONFIG_USBHOST_MAX_BUS` 。基础的 cdc + hid + msc 参考 `usb_host.c` 文件，其余参考 **platform** 目录下适配

 .. _usbh_link_script:

--- a/docs/source/version.rst
+++ b/docs/source/version.rst
@@ -162,4 +162,21 @@ v1.5.3
 - hpmicro、chipidea dcache 支持
 - idf host msc 支持
 - otg 框架重构，当前 port 仅支持 hpmicro
- CI 编译功能，支持 hpmicro/espressif/bouffalolab
+- CI 编译功能，支持 hpmicro/espressif/bouffalolab
+
+v1.5.3.99
+----------------------
+
+bugfix for v1.5.3
+
+
+v1.6.0
+----------------------
+
+- **host 增加 serial 框架，统一所有类串口驱动**
+- **host hid 增加报告描述符解析功能**
+- usbh_initialize 增加 event callback，用于通知用户主机事件变化，通常不需要使用，设置为 NULL 即可
+- 支持 gamepad device
+- 增加 ti xmc，infineon edge e8x port 支持
+- dwc2 增加 usbd_dwc2_get_system_clock 替换 SystemCoreClock；删除 __UNALIGNED_UINT32_READ 和 __UNALIGNED_UINT32_WRITE 宏；读取 setup 个数设置为 1个；第一次读取 setup 移动到 USB_OTG_GINTSTS_ENUMDNE 中断中
+- dwc2/ehci 增加 roothub 速度设置
--- a/osal/idf/usb_config.h
+++ b/osal/idf/usb_config.h
@@ -28,7 +28,7 @@

 // #define CONFIG_USB_DCACHE_ENABLE

-/* attribute data into no cache ram 
+/* attribute data into no cache ram
 * DRAM_DMA_ALIGNED_ATTR was introduced in IDF 5.3. If not defined, it falls back to DMA_ATTR
 */
 #ifndef DRAM_DMA_ALIGNED_ATTR
@@ -158,7 +158,7 @@
 #define CONFIG_USBHOST_MAX_INTF_ALTSETTINGS 2
 #define CONFIG_USBHOST_MAX_ENDPOINTS        4

-#define CONFIG_USBHOST_MAX_CDC_ACM_CLASS 4
+#define CONFIG_USBHOST_MAX_SERIAL_CLASS  4
 #define CONFIG_USBHOST_MAX_HID_CLASS     4
 #define CONFIG_USBHOST_MAX_MSC_CLASS     2
 #define CONFIG_USBHOST_MAX_AUDIO_CLASS   1
@@ -193,6 +193,10 @@
 #define CONFIG_USBHOST_MSC_TIMEOUT 5000
 #endif

+#ifndef CONFIG_USBHOST_SERIAL_RX_SIZE
+#define CONFIG_USBHOST_SERIAL_RX_SIZE 2048
+#endif
+
 /* This parameter affects usb performance, and depends on (TCP_WND)tcp eceive windows size,
 * you can change to 2K ~ 16K and must be larger than TCP RX windows size in order to avoid being overflow.
 */
--- a/platform/rtthread/usb_msh.c
+++ b/platform/rtthread/usb_msh.c
@@ -21,7 +21,7 @@ int usbh_init(int argc, char **argv)

    busid = atoi(argv[1]);
    reg_base = strtoll(argv[2], NULL, 16);
-    usbh_initialize(busid, reg_base);
+    usbh_initialize(busid, reg_base, NULL);

    return 0;
 }
@@ -44,4 +44,10 @@ int usbh_deinit(int argc, char **argv)
 MSH_CMD_EXPORT(usbh_init, init usb host);
 MSH_CMD_EXPORT(usbh_deinit, deinit usb host);
 MSH_CMD_EXPORT(lsusb, ls usb devices);
+
+#ifdef CONFIG_USBHOST_SERIAL
+#include "usbh_serial.h"
+MSH_CMD_EXPORT(usbh_serial, usbh_serial test);
+#endif
+
 #endif
--- a/platform/rtthread/usbh_rtserial.c
+++ b/platform/rtthread/usbh_rtserial.c
@@ -0,0 +1,215 @@
+/*
+ * Copyright (c) 2025, sakumisu
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#include <rtthread.h>
+#include <rtdevice.h>
+
+#include "usbh_core.h"
+#include "usbh_serial.h"
+
+static rt_err_t rt_usbh_serial_open(struct rt_device *dev, rt_uint16_t oflag)
+{
+    struct usbh_serial *serial;
+
+    RT_ASSERT(dev != RT_NULL && dev->user_data != RT_NULL);
+
+    serial = (struct usbh_serial *)dev->user_data;
+
+    serial = usbh_serial_open(serial->hport->config.intf[serial->intf].devname, USBH_SERIAL_O_RDWR | USBH_SERIAL_O_NONBLOCK);
+    if (serial == RT_NULL) {
+        USB_LOG_ERR("serial open failed\n");
+        return -RT_ERROR;
+    }
+
+    struct usbh_serial_termios termios;
+
+    memset(&termios, 0, sizeof(termios));
+    termios.baudrate = 115200;
+    termios.stopbits = 0;
+    termios.parity = 0;
+    termios.databits = 8;
+    termios.rtscts = false;
+    termios.rx_timeout = 0;
+
+    usbh_serial_control(serial, USBH_SERIAL_CMD_SET_ATTR, &termios);
+
+    return RT_EOK;
+}
+
+static rt_err_t rt_usbh_serial_close(struct rt_device *dev)
+{
+    struct usbh_serial *serial;
+
+    RT_ASSERT(dev != RT_NULL && dev->user_data != RT_NULL);
+
+    serial = (struct usbh_serial *)dev->user_data;
+
+    usbh_serial_close(serial);
+
+    return RT_EOK;
+}
+
+static rt_ssize_t rt_usbh_serial_read(struct rt_device *dev,
+                                      rt_off_t pos,
+                                      void *buffer,
+                                      rt_size_t size)
+{
+    struct usbh_serial *serial;
+
+    RT_ASSERT(dev != RT_NULL && dev->user_data != RT_NULL);
+
+    serial = (struct usbh_serial *)dev->user_data;
+
+    return usbh_serial_read(serial, buffer, size);
+}
+
+static rt_ssize_t rt_usbh_serial_write(struct rt_device *dev,
+                                       rt_off_t pos,
+                                       const void *buffer,
+                                       rt_size_t size)
+{
+    struct usbh_serial *serial;
+    int ret = 0;
+    rt_uint8_t *align_buf;
+
+    RT_ASSERT(dev != RT_NULL && dev->user_data != RT_NULL);
+
+    serial = (struct usbh_serial *)dev->user_data;
+
+    align_buf = (rt_uint8_t *)buffer;
+
+    if ((uint32_t)buffer & (CONFIG_USB_ALIGN_SIZE - 1)) {
+        align_buf = rt_malloc_align(USB_ALIGN_UP(size, CONFIG_USB_ALIGN_SIZE), CONFIG_USB_ALIGN_SIZE);
+        if (!align_buf) {
+            USB_LOG_ERR("serial get align buf failed\n");
+            return 0;
+        }
+
+        usb_memcpy(align_buf, buffer, size);
+    }
+
+    ret = usbh_serial_write(serial, align_buf, size);
+
+    if ((uint32_t)buffer & (CONFIG_USB_ALIGN_SIZE - 1)) {
+        rt_free_align(align_buf);
+    }
+
+    return ret;
+}
+
+static rt_err_t rt_usbh_serial_control(struct rt_device *dev,
+                                       int cmd,
+                                       void *args)
+{
+    struct usbh_serial *serial;
+    struct serial_configure *config;
+    int ret = -RT_EINVAL;
+
+    RT_ASSERT(dev != RT_NULL && dev->user_data != RT_NULL);
+
+    serial = (struct usbh_serial *)dev->user_data;
+
+    switch (cmd) {
+        case RT_DEVICE_CTRL_CONFIG: {
+            config = (struct serial_configure *)args;
+
+            struct usbh_serial_termios termios;
+
+            memset(&termios, 0, sizeof(termios));
+            termios.baudrate = config->baud_rate;
+            termios.stopbits = 0;
+            termios.parity = config->parity;
+            termios.databits = config->data_bits;
+            termios.rtscts = false;
+            termios.rx_timeout = 0;
+
+            usbh_serial_control(serial, USBH_SERIAL_CMD_SET_ATTR, &termios);
+        } break;
+
+        default:
+            break;
+    }
+
+    return ret;
+}
+
+#ifdef RT_USING_DEVICE_OPS
+const static struct rt_device_ops usbh_serial_ops = {
+    NULL,
+    rt_usbh_serial_open,
+    rt_usbh_serial_close,
+    rt_usbh_serial_read,
+    rt_usbh_serial_write,
+    rt_usbh_serial_control
+};
+#endif
+
+rt_err_t usbh_serial_register(struct usbh_serial *serial)
+{
+    rt_err_t ret;
+    struct rt_device *device;
+    RT_ASSERT(serial != RT_NULL);
+
+    device = rt_malloc(sizeof(struct rt_device));
+    if (device == RT_NULL) {
+        USB_LOG_ERR("serial device malloc failed\n");
+        return -RT_ENOMEM;
+    }
+    memset(device, 0, sizeof(struct rt_device));
+
+    device->type = RT_Device_Class_Char;
+    device->rx_indicate = RT_NULL;
+    device->tx_complete = RT_NULL;
+
+#ifdef RT_USING_DEVICE_OPS
+    device->ops = &usbh_serial_ops;
+#else
+    device->init = NULL;
+    device->open = rt_usbh_serial_open;
+    device->close = rt_usbh_serial_close;
+    device->read = rt_usbh_serial_read;
+    device->write = rt_usbh_serial_write;
+    device->control = rt_usbh_serial_control;
+#endif
+    device->user_data = serial;
+    serial->user_data = device;
+
+    /* skip /dev/ to avoid BAD file */
+    const char *dev_name = serial->hport->config.intf[serial->intf].devname;
+    if (strncmp(dev_name, "/dev/", 5) == 0) {
+        dev_name += 5;
+    }
+
+    /* register a character device */
+    ret = rt_device_register(device, dev_name, RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_REMOVABLE);
+
+#ifdef RT_USING_POSIX_DEVIO
+    /* set fops */
+    device->fops = &usbh_serial_fops;
+#endif
+    return ret;
+}
+
+void usbh_serial_unregister(struct usbh_serial *serial)
+{
+    struct rt_device *device;
+
+    RT_ASSERT(serial != NULL && serial->user_data != NULL);
+
+    device = (struct rt_device *)serial->user_data;
+
+    rt_device_unregister(device);
+    rt_free(device);
+}
+
+void usbh_serial_run(struct usbh_serial *serial)
+{
+    usbh_serial_register(serial);
+}
+
+void usbh_serial_stop(struct usbh_serial *serial)
+{
+    usbh_serial_unregister(serial);
+}
--- a/platform/rtthread/usbh_serial.c
+++ b/platform/rtthread/usbh_serial.c
@@ -1,899 +0,0 @@
-/*
- * Copyright (c) 2025, sakumisu
- *
- * SPDX-License-Identifier: Apache-2.0
- */
-#include <rtthread.h>
-#include <rtdevice.h>
-
-#include "usbh_core.h"
-#include "usbh_cdc_acm.h"
-#include "usbh_ftdi.h"
-#include "usbh_cp210x.h"
-#include "usbh_ch34x.h"
-#include "usbh_pl2303.h"
-
-#define DEV_FORMAT_VENDOR  "ttyUSB%d"
-#define DEV_FORMAT_CDC_ACM "ttyACM%d"
-
-#define USBH_RX_MAX_SIZE 2048
-
-#ifndef CONFIG_USBHOST_MAX_VENDOR_SERIAL_CLASS
-#define CONFIG_USBHOST_MAX_VENDOR_SERIAL_CLASS (4)
-#endif
-
-#ifndef CONFIG_USBHOST_SERIAL_RX_BUFSIZE
-#define CONFIG_USBHOST_SERIAL_RX_BUFSIZE (USBH_RX_MAX_SIZE * 2)
-#endif
-
-enum usbh_serial_type {
-    USBH_SERIAL_TYPE_CDC_ACM = 0,
-    USBH_SERIAL_TYPE_FTDI,
-    USBH_SERIAL_TYPE_CP210X,
-    USBH_SERIAL_TYPE_CH34X,
-    USBH_SERIAL_TYPE_PL2303,
-};
-
-struct usbh_serial {
-    struct rt_device parent;
-    enum usbh_serial_type type;
-    uint8_t minor;
-    char name[CONFIG_USBHOST_DEV_NAMELEN];
-    struct rt_ringbuffer rx_rb;
-    rt_uint8_t rx_rb_buffer[CONFIG_USBHOST_SERIAL_RX_BUFSIZE];
-};
-
-static uint32_t g_devinuse_vendor = 0;
-static uint32_t g_devinuse_cdc_acm = 0;
-
-static USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t g_usbh_serial_vendor_rx_buf[CONFIG_USBHOST_MAX_VENDOR_SERIAL_CLASS][USB_ALIGN_UP(USBH_RX_MAX_SIZE, CONFIG_USB_ALIGN_SIZE)];
-static USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t g_usbh_serial_cdc_acm_rx_buf[CONFIG_USBHOST_MAX_CDC_ACM_CLASS][USB_ALIGN_UP(USBH_RX_MAX_SIZE, CONFIG_USB_ALIGN_SIZE)];
-
-static struct usbh_serial *usbh_serial_alloc(uint8_t type)
-{
-    uint8_t devno;
-    struct usbh_serial *serial;
-
-    for (devno = 0; devno < CONFIG_USBHOST_MAX_VENDOR_SERIAL_CLASS; devno++) {
-        if ((g_devinuse_vendor & (1U << devno)) == 0) {
-            g_devinuse_vendor |= (1U << devno);
-
-            serial = rt_malloc(sizeof(struct usbh_serial));
-            memset(serial, 0, sizeof(struct usbh_serial));
-            serial->type = type;
-            serial->minor = devno;
-            snprintf(serial->name, CONFIG_USBHOST_DEV_NAMELEN, DEV_FORMAT_VENDOR, serial->minor);
-            return serial;
-        }
-    }
-    return NULL;
-}
-
-static void usbh_serial_free(struct usbh_serial *serial)
-{
-    uint8_t devno = serial->minor;
-
-    if (devno < 32) {
-        g_devinuse_vendor &= ~(1U << devno);
-    }
-    memset(serial, 0, sizeof(struct usbh_serial));
-    rt_free(serial);
-}
-
-static struct usbh_serial *usbh_serial_cdc_acm_alloc(uint8_t type)
-{
-    uint8_t devno;
-    struct usbh_serial *serial;
-
-    for (devno = 0; devno < CONFIG_USBHOST_MAX_CDC_ACM_CLASS; devno++) {
-        if ((g_devinuse_cdc_acm & (1U << devno)) == 0) {
-            g_devinuse_cdc_acm |= (1U << devno);
-
-            serial = rt_malloc(sizeof(struct usbh_serial));
-            memset(serial, 0, sizeof(struct usbh_serial));
-            serial->type = type;
-            serial->minor = devno;
-            snprintf(serial->name, CONFIG_USBHOST_DEV_NAMELEN, DEV_FORMAT_CDC_ACM, serial->minor);
-            return serial;
-        }
-    }
-    return NULL;
-}
-
-static void usbh_serial_cdc_acm_free(struct usbh_serial *serial)
-{
-    uint8_t devno = serial->minor;
-
-    if (devno < 32) {
-        g_devinuse_cdc_acm &= ~(1U << devno);
-    }
-    memset(serial, 0, sizeof(struct usbh_serial));
-    rt_free(serial);
-}
-
-static rt_err_t usbh_serial_open(struct rt_device *dev, rt_uint16_t oflag)
-{
-    struct usbh_serial *serial;
-
-    RT_ASSERT(dev != RT_NULL);
-
-    serial = (struct usbh_serial *)dev;
-
-    switch (serial->type) {
-        case USBH_SERIAL_TYPE_CDC_ACM:
-            break;
-        case USBH_SERIAL_TYPE_FTDI:
-            break;
-        case USBH_SERIAL_TYPE_CP210X:
-            break;
-        case USBH_SERIAL_TYPE_CH34X:
-            break;
-        case USBH_SERIAL_TYPE_PL2303:
-            break;
-
-        default:
-            break;
-    }
-
-    return RT_EOK;
-}
-
-static rt_err_t usbh_serial_close(struct rt_device *dev)
-{
-    struct usbh_serial *serial;
-
-    RT_ASSERT(dev != RT_NULL);
-
-    serial = (struct usbh_serial *)dev;
-
-    switch (serial->type) {
-        case USBH_SERIAL_TYPE_CDC_ACM:
-            break;
-        case USBH_SERIAL_TYPE_FTDI:
-            break;
-        case USBH_SERIAL_TYPE_CP210X:
-            break;
-        case USBH_SERIAL_TYPE_CH34X:
-            break;
-        case USBH_SERIAL_TYPE_PL2303:
-            break;
-
-        default:
-            break;
-    }
-
-    return RT_EOK;
-}
-
-static rt_ssize_t usbh_serial_read(struct rt_device *dev,
-                                   rt_off_t pos,
-                                   void *buffer,
-                                   rt_size_t size)
-{
-    struct usbh_serial *serial;
-
-    RT_ASSERT(dev != RT_NULL);
-
-    serial = (struct usbh_serial *)dev;
-
-    return rt_ringbuffer_get(&serial->rx_rb, (rt_uint8_t *)buffer, size);
-}
-
-static rt_ssize_t usbh_serial_write(struct rt_device *dev,
-                                    rt_off_t pos,
-                                    const void *buffer,
-                                    rt_size_t size)
-{
-    struct usbh_serial *serial;
-    int ret = 0;
-    rt_uint8_t *align_buf;
-
-    RT_ASSERT(dev != RT_NULL);
-
-    serial = (struct usbh_serial *)dev;
-
-    align_buf = (rt_uint8_t *)buffer;
-
-    if ((uint32_t)buffer & (CONFIG_USB_ALIGN_SIZE - 1)) {
-        align_buf = rt_malloc_align(USB_ALIGN_UP(size, CONFIG_USB_ALIGN_SIZE), CONFIG_USB_ALIGN_SIZE);
-        if (!align_buf) {
-            USB_LOG_ERR("serial get align buf failed\n");
-            return 0;
-        }
-
-        usb_memcpy(align_buf, buffer, size);
-    }
-
-    switch (serial->type) {
-#if defined(PKG_CHERRYUSB_HOST_CDC_ACM) || defined(RT_CHERRYUSB_HOST_CDC_ACM)
-        case USBH_SERIAL_TYPE_CDC_ACM:
-            ret = usbh_cdc_acm_bulk_out_transfer((struct usbh_cdc_acm *)dev->user_data, (uint8_t *)align_buf, size, RT_WAITING_FOREVER);
-            if (ret < 0) {
-                USB_LOG_ERR("usbh_cdc_acm_bulk_out_transfer failed: %d\n", ret);
-                ret = 0;
-            }
-            break;
-#endif
-#if defined(PKG_CHERRYUSB_HOST_FTDI) || defined(RT_CHERRYUSB_HOST_FTDI)
-        case USBH_SERIAL_TYPE_FTDI:
-            ret = usbh_ftdi_bulk_out_transfer((struct usbh_ftdi *)dev->user_data, (uint8_t *)align_buf, size, RT_WAITING_FOREVER);
-            if (ret < 0) {
-                USB_LOG_ERR("usbh_ftdi_bulk_out_transfer failed: %d\n", ret);
-                ret = 0;
-            }
-            break;
-#endif
-#if defined(PKG_CHERRYUSB_HOST_CH34X) || defined(RT_CHERRYUSB_HOST_CH34X)
-        case USBH_SERIAL_TYPE_CH34X:
-            ret = usbh_ch34x_bulk_out_transfer((struct usbh_ch34x *)dev->user_data, (uint8_t *)align_buf, size, RT_WAITING_FOREVER);
-            if (ret < 0) {
-                USB_LOG_ERR("usbh_ch34x_bulk_out_transfer failed: %d\n", ret);
-                ret = 0;
-            }
-            break;
-#endif
-#if defined(PKG_CHERRYUSB_HOST_PL2303) || defined(RT_CHERRYUSB_HOST_PL2303)
-        case USBH_SERIAL_TYPE_PL2303:
-            ret = usbh_pl2303_bulk_out_transfer((struct usbh_pl2303 *)dev->user_data, (uint8_t *)align_buf, size, RT_WAITING_FOREVER);
-            if (ret < 0) {
-                USB_LOG_ERR("usbh_pl2303_bulk_out_transfer failed: %d\n", ret);
-                ret = 0;
-            }
-            break;
-#endif
-        default:
-            break;
-    }
-
-    if ((uint32_t)buffer & (CONFIG_USB_ALIGN_SIZE - 1)) {
-        rt_free_align(align_buf);
-    }
-
-    return ret;
-}
-
-static rt_err_t usbh_serial_control(struct rt_device *dev,
-                                    int cmd,
-                                    void *args)
-{
-    struct usbh_serial *serial;
-    struct serial_configure *config;
-    struct cdc_line_coding line_coding;
-    int ret = -RT_EINVAL;
-
-    RT_ASSERT(dev != RT_NULL);
-
-    serial = (struct usbh_serial *)dev;
-
-    switch (serial->type) {
-#if defined(PKG_CHERRYUSB_HOST_CDC_ACM) || defined(RT_CHERRYUSB_HOST_CDC_ACM)
-        case USBH_SERIAL_TYPE_CDC_ACM:
-            if (cmd == RT_DEVICE_CTRL_CONFIG) {
-                struct usbh_cdc_acm *cdc_acm_class;
-                cdc_acm_class = (struct usbh_cdc_acm *)dev->user_data;
-
-                config = (struct serial_configure *)args;
-
-                line_coding.dwDTERate = config->baud_rate;
-                line_coding.bDataBits = config->data_bits;
-                line_coding.bCharFormat = 0; // STOP_BITS_1
-                line_coding.bParityType = config->parity;
-
-                usbh_cdc_acm_set_line_coding(cdc_acm_class, &line_coding);
-            }
-
-            ret = RT_EOK;
-            break;
-#endif
-#if defined(PKG_CHERRYUSB_HOST_FTDI) || defined(RT_CHERRYUSB_HOST_FTDI)
-        case USBH_SERIAL_TYPE_FTDI:
-            if (cmd == RT_DEVICE_CTRL_CONFIG) {
-                struct usbh_ftdi *ftdi_class;
-                ftdi_class = (struct usbh_ftdi *)dev->user_data;
-
-                config = (struct serial_configure *)args;
-
-                line_coding.dwDTERate = config->baud_rate;
-                line_coding.bDataBits = config->data_bits;
-                line_coding.bCharFormat = 0; // STOP_BITS_1
-                line_coding.bParityType = config->parity;
-
-                usbh_ftdi_set_line_coding(ftdi_class, &line_coding);
-            }
-
-            ret = RT_EOK;
-            break;
-#endif
-#if defined(PKG_CHERRYUSB_HOST_CP210X) || defined(RT_CHERRYUSB_HOST_CP210X)
-        case USBH_SERIAL_TYPE_CP210X:
-            if (cmd == RT_DEVICE_CTRL_CONFIG) {
-                struct usbh_cp210x *cp210x_class;
-                cp210x_class = (struct usbh_cp210x *)dev->user_data;
-
-                config = (struct serial_configure *)args;
-
-                line_coding.dwDTERate = config->baud_rate;
-                line_coding.bDataBits = config->data_bits;
-                line_coding.bCharFormat = 0; // STOP_BITS_1
-                line_coding.bParityType = config->parity;
-
-                usbh_cp210x_set_line_coding(cp210x_class, &line_coding);
-            }
-
-            ret = RT_EOK;
-            break;
-#endif
-#if defined(PKG_CHERRYUSB_HOST_CH34X) || defined(RT_CHERRYUSB_HOST_CH34X)
-        case USBH_SERIAL_TYPE_CH34X:
-            if (cmd == RT_DEVICE_CTRL_CONFIG) {
-                struct usbh_ch34x *ch34x_class;
-                ch34x_class = (struct usbh_ch34x *)dev->user_data;
-
-                config = (struct serial_configure *)args;
-
-                line_coding.dwDTERate = config->baud_rate;
-                line_coding.bDataBits = config->data_bits;
-                line_coding.bCharFormat = 0; // STOP_BITS_1
-                line_coding.bParityType = config->parity;
-
-                usbh_ch34x_set_line_coding(ch34x_class, &line_coding);
-            }
-
-            ret = RT_EOK;
-            break;
-#endif
-#if defined(PKG_CHERRYUSB_HOST_PL2303) || defined(RT_CHERRYUSB_HOST_PL2303)
-        case USBH_SERIAL_TYPE_PL2303:
-            if (cmd == RT_DEVICE_CTRL_CONFIG) {
-                struct usbh_pl2303 *pl2303_class;
-                pl2303_class = (struct usbh_pl2303 *)dev->user_data;
-
-                config = (struct serial_configure *)args;
-
-                line_coding.dwDTERate = config->baud_rate;
-                line_coding.bDataBits = config->data_bits;
-                line_coding.bCharFormat = 0; // STOP_BITS_1
-                line_coding.bParityType = config->parity;
-
-                usbh_pl2303_set_line_coding(pl2303_class, &line_coding);
-            }
-
-            ret = RT_EOK;
-            break;
-#endif
-        default:
-            break;
-    }
-
-    return ret;
-}
-
-#ifdef RT_USING_DEVICE_OPS
-const static struct rt_device_ops usbh_serial_ops = {
-    NULL,
-    usbh_serial_open,
-    usbh_serial_close,
-    usbh_serial_read,
-    usbh_serial_write,
-    usbh_serial_control
-};
-#endif
-
-#ifdef RT_USING_POSIX_DEVIO
-#include <unistd.h>
-#include <fcntl.h>
-#include <poll.h>
-#include <sys/ioctl.h>
-#include <dfs_file.h>
-
-#ifdef RT_USING_POSIX_TERMIOS
-#include <termios.h>
-#endif
-
-static rt_err_t usbh_serial_fops_rx_ind(rt_device_t dev, rt_size_t size)
-{
-    rt_wqueue_wakeup(&(dev->wait_queue), (void*)POLLIN);
-
-    return RT_EOK;
-}
-
-/* fops for serial */
-static int usbh_serial_fops_open(struct dfs_file *fd)
-{
-    rt_err_t ret = 0;
-    rt_uint16_t flags = 0;
-    rt_device_t device;
-
-    device = (rt_device_t)fd->vnode->data;
-    RT_ASSERT(device != RT_NULL);
-
-    switch (fd->flags & O_ACCMODE)
-    {
-    case O_RDONLY:
-        USB_LOG_DBG("fops open: O_RDONLY!");
-        flags = RT_DEVICE_FLAG_RDONLY;
-        break;
-    case O_WRONLY:
-        USB_LOG_DBG("fops open: O_WRONLY!");
-        flags = RT_DEVICE_FLAG_WRONLY;
-        break;
-    case O_RDWR:
-        USB_LOG_DBG("fops open: O_RDWR!");
-        flags = RT_DEVICE_FLAG_RDWR;
-        break;
-    default:
-        USB_LOG_ERR("fops open: unknown mode - %d!", fd->flags & O_ACCMODE);
-        break;
-    }
-
-    if ((fd->flags & O_ACCMODE) != O_WRONLY)
-        rt_device_set_rx_indicate(device, usbh_serial_fops_rx_ind);
-    ret = rt_device_open(device, flags);
-    if (ret == RT_EOK) return 0;
-
-    return ret;
-}
-
-static int usbh_serial_fops_close(struct dfs_file *fd)
-{
-    rt_device_t device;
-
-    device = (rt_device_t)fd->vnode->data;
-
-    rt_device_set_rx_indicate(device, RT_NULL);
-    rt_device_close(device);
-
-    return 0;
-}
-
-static int usbh_serial_fops_ioctl(struct dfs_file *fd, int cmd, void *args)
-{
-    rt_device_t device;
-    int flags = (int)(rt_base_t)args;
-    int mask  = O_NONBLOCK | O_APPEND;
-
-    device = (rt_device_t)fd->vnode->data;
-    switch (cmd)
-    {
-    case FIONREAD:
-        break;
-    case FIONWRITE:
-        break;
-    case F_SETFL:
-        flags &= mask;
-        fd->flags &= ~mask;
-        fd->flags |= flags;
-        break;
-    }
-
-    return rt_device_control(device, cmd, args);
-}
-
-static int usbh_serial_fops_read(struct dfs_file *fd, void *buf, size_t count)
-{
-    int size = 0;
-    rt_device_t device;
-
-    device = (rt_device_t)fd->vnode->data;
-
-    do
-    {
-        size = rt_device_read(device, -1,  buf, count);
-        if (size <= 0)
-        {
-            if (fd->flags & O_NONBLOCK)
-            {
-                size = -EAGAIN;
-                break;
-            }
-
-            rt_wqueue_wait(&(device->wait_queue), 0, RT_WAITING_FOREVER);
-        }
-    }while (size <= 0);
-
-    return size;
-}
-
-static int usbh_serial_fops_write(struct dfs_file *fd, const void *buf, size_t count)
-{
-    rt_device_t device;
-
-    device = (rt_device_t)fd->vnode->data;
-    return rt_device_write(device, -1, buf, count);
-}
-
-static int usbh_serial_fops_poll(struct dfs_file *fd, struct rt_pollreq *req)
-{
-    int mask = 0;
-    int flags = 0;
-    rt_device_t device;
-    struct usbh_serial *serial;
-
-    device = (rt_device_t)fd->vnode->data;
-    RT_ASSERT(device != RT_NULL);
-
-    serial = (struct usbh_serial *)device;
-
-    /* only support POLLIN */
-    flags = fd->flags & O_ACCMODE;
-    if (flags == O_RDONLY || flags == O_RDWR)
-    {
-        rt_base_t level;
-
-        rt_poll_add(&(device->wait_queue), req);
-
-        level = rt_hw_interrupt_disable();
-
-        if (rt_ringbuffer_data_len(&serial->rx_rb))
-            mask |= POLLIN;
-        rt_hw_interrupt_enable(level);
-    }
-    // mask|=POLLOUT;
-   return mask;
-}
-
-const static struct dfs_file_ops usbh_serial_fops =
-{
-    usbh_serial_fops_open,
-    usbh_serial_fops_close,
-    usbh_serial_fops_ioctl,
-    usbh_serial_fops_read,
-    usbh_serial_fops_write,
-    RT_NULL, /* flush */
-    RT_NULL, /* lseek */
-    RT_NULL, /* getdents */
-    usbh_serial_fops_poll,
-};
-#endif /* RT_USING_POSIX_DEVIO */
-
-rt_err_t usbh_serial_register(struct usbh_serial *serial,
-                              void *data)
-{
-    rt_err_t ret;
-    struct rt_device *device;
-    RT_ASSERT(serial != RT_NULL);
-
-    device = &(serial->parent);
-
-    device->type = RT_Device_Class_Char;
-    device->rx_indicate = RT_NULL;
-    device->tx_complete = RT_NULL;
-
-#ifdef RT_USING_DEVICE_OPS
-    device->ops = &usbh_serial_ops;
-#else
-    device->init = NULL;
-    device->open = usbh_serial_open;
-    device->close = usbh_serial_close;
-    device->read = usbh_serial_read;
-    device->write = usbh_serial_write;
-    device->control = usbh_serial_control;
-#endif
-    device->user_data = data;
-
-    /* register a character device */
-    ret = rt_device_register(device, serial->name, RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_REMOVABLE);
-
-#ifdef RT_USING_POSIX_DEVIO
-    /* set fops */
-    device->fops = &usbh_serial_fops;
-#endif
-    rt_ringbuffer_init(&serial->rx_rb, serial->rx_rb_buffer, sizeof(serial->rx_rb_buffer));
-
-    return ret;
-}
-
-void usbh_serial_unregister(struct usbh_serial *serial)
-{
-    RT_ASSERT(serial != NULL);
-
-    rt_device_unregister(&serial->parent);
-
-    if (serial->type == USBH_SERIAL_TYPE_CDC_ACM) {
-        usbh_serial_cdc_acm_free(serial);
-    } else {
-        usbh_serial_free(serial);
-    }
-}
-
-#if defined(PKG_CHERRYUSB_HOST_CDC_ACM) || defined(RT_CHERRYUSB_HOST_CDC_ACM)
-void usbh_cdc_acm_callback(void *arg, int nbytes)
-{
-    struct usbh_cdc_acm *cdc_acm_class = (struct usbh_cdc_acm *)arg;
-    struct usbh_serial *serial;
-    int ret;
-    struct usbh_urb *urb = &cdc_acm_class->bulkin_urb;
-
-    if (nbytes > 0) {
-        serial = (struct usbh_serial *)cdc_acm_class->user_data;
-        rt_ringbuffer_put(&serial->rx_rb, g_usbh_serial_cdc_acm_rx_buf[serial->minor], nbytes);
-
-        if (serial->parent.rx_indicate) {
-            serial->parent.rx_indicate(&serial->parent, nbytes);
-        }
-
-        usbh_bulk_urb_fill(urb, cdc_acm_class->hport, cdc_acm_class->bulkin, g_usbh_serial_cdc_acm_rx_buf[serial->minor], sizeof(g_usbh_serial_cdc_acm_rx_buf[serial->minor]), 0, usbh_cdc_acm_callback, cdc_acm_class);
-        ret = usbh_submit_urb(urb);
-        if (ret < 0) {
-            USB_LOG_ERR("usbh_submit_urb failed: %d\n", ret);
-        }
-    }
-}
-
-void usbh_cdc_acm_run(struct usbh_cdc_acm *cdc_acm_class)
-{
-    struct usbh_serial *serial;
-    int ret;
-    struct usbh_urb *urb = &cdc_acm_class->bulkin_urb;
-
-    serial = usbh_serial_cdc_acm_alloc(USBH_SERIAL_TYPE_CDC_ACM);
-    cdc_acm_class->user_data = serial;
-
-    usbh_serial_register(serial, cdc_acm_class);
-
-    struct cdc_line_coding linecoding;
-    linecoding.dwDTERate = 115200;
-    linecoding.bDataBits = 8;
-    linecoding.bParityType = 0;
-    linecoding.bCharFormat = 0;
-    usbh_cdc_acm_set_line_coding(cdc_acm_class, &linecoding);
-
-    usbh_bulk_urb_fill(urb, cdc_acm_class->hport, cdc_acm_class->bulkin, g_usbh_serial_cdc_acm_rx_buf[serial->minor], sizeof(g_usbh_serial_cdc_acm_rx_buf[serial->minor]), 0, usbh_cdc_acm_callback, cdc_acm_class);
-    ret = usbh_submit_urb(urb);
-    if (ret < 0) {
-        USB_LOG_ERR("usbh_submit_urb failed: %d\n", ret);
-        usbh_serial_unregister(serial);
-        return;
-    }
-}
-
-void usbh_cdc_acm_stop(struct usbh_cdc_acm *cdc_acm_class)
-{
-    struct usbh_serial *serial;
-
-    serial = (struct usbh_serial *)cdc_acm_class->user_data;
-    usbh_serial_unregister(serial);
-}
-#endif
-
-#if defined(PKG_CHERRYUSB_HOST_FTDI) || defined(RT_CHERRYUSB_HOST_FTDI)
-void usbh_ftdi_callback(void *arg, int nbytes)
-{
-    struct usbh_ftdi *ftdi_class = (struct usbh_ftdi *)arg;
-    struct usbh_serial *serial;
-    int ret;
-    struct usbh_urb *urb = &ftdi_class->bulkin_urb;
-
-    if (nbytes >= 2) {
-        serial = (struct usbh_serial *)ftdi_class->user_data;
-
-        nbytes -= 2; // Skip the first two bytes (header)
-        rt_ringbuffer_put(&serial->rx_rb, &g_usbh_serial_vendor_rx_buf[serial->minor][2], nbytes);
-
-        if (serial->parent.rx_indicate && nbytes) {
-            serial->parent.rx_indicate(&serial->parent, nbytes);
-        }
-
-        usbh_bulk_urb_fill(urb, ftdi_class->hport, ftdi_class->bulkin, g_usbh_serial_vendor_rx_buf[serial->minor], sizeof(g_usbh_serial_vendor_rx_buf[serial->minor]), 0, usbh_ftdi_callback, ftdi_class);
-        ret = usbh_submit_urb(urb);
-        if (ret < 0) {
-            USB_LOG_ERR("usbh_submit_urb failed: %d\n", ret);
-        }
-    }
-}
-
-void usbh_ftdi_run(struct usbh_ftdi *ftdi_class)
-{
-    struct usbh_serial *serial;
-    int ret;
-    struct usbh_urb *urb = &ftdi_class->bulkin_urb;
-
-    serial = usbh_serial_alloc(USBH_SERIAL_TYPE_FTDI);
-    ftdi_class->user_data = serial;
-
-    usbh_serial_register(serial, ftdi_class);
-
-    struct cdc_line_coding linecoding;
-    linecoding.dwDTERate = 115200;
-    linecoding.bDataBits = 8;
-    linecoding.bParityType = 0;
-    linecoding.bCharFormat = 0;
-    usbh_ftdi_set_line_coding(ftdi_class, &linecoding);
-
-    usbh_bulk_urb_fill(urb, ftdi_class->hport, ftdi_class->bulkin, g_usbh_serial_vendor_rx_buf[serial->minor], sizeof(g_usbh_serial_vendor_rx_buf[serial->minor]), 0, usbh_ftdi_callback, ftdi_class);
-    ret = usbh_submit_urb(urb);
-    if (ret < 0) {
-        USB_LOG_ERR("usbh_submit_urb failed: %d\n", ret);
-        usbh_serial_unregister(serial);
-        return;
-    }
-}
-
-void usbh_ftdi_stop(struct usbh_ftdi *ftdi_class)
-{
-    struct usbh_serial *serial;
-
-    serial = (struct usbh_serial *)ftdi_class->user_data;
-    usbh_serial_unregister(serial);
-}
-#endif
-
-#if defined(PKG_CHERRYUSB_HOST_CH34X) || defined(RT_CHERRYUSB_HOST_CH34X)
-void usbh_ch34x_callback(void *arg, int nbytes)
-{
-    struct usbh_ch34x *ch34x_class = (struct usbh_ch34x *)arg;
-    struct usbh_serial *serial;
-    int ret;
-    struct usbh_urb *urb = &ch34x_class->bulkin_urb;
-
-    if (nbytes > 0) {
-        serial = (struct usbh_serial *)ch34x_class->user_data;
-        rt_ringbuffer_put(&serial->rx_rb, g_usbh_serial_vendor_rx_buf[serial->minor], nbytes);
-
-        if (serial->parent.rx_indicate) {
-            serial->parent.rx_indicate(&serial->parent, nbytes);
-        }
-
-        usbh_bulk_urb_fill(urb, ch34x_class->hport, ch34x_class->bulkin, g_usbh_serial_vendor_rx_buf[serial->minor], sizeof(g_usbh_serial_vendor_rx_buf[serial->minor]), 0, usbh_ch34x_callback, ch34x_class);
-        ret = usbh_submit_urb(urb);
-        if (ret < 0) {
-            USB_LOG_ERR("usbh_submit_urb failed: %d\n", ret);
-        }
-    }
-}
-
-void usbh_ch34x_run(struct usbh_ch34x *ch34x_class)
-{
-    struct usbh_serial *serial;
-    int ret;
-    struct usbh_urb *urb = &ch34x_class->bulkin_urb;
-
-    serial = usbh_serial_alloc(USBH_SERIAL_TYPE_CH34X);
-    ch34x_class->user_data = serial;
-
-    usbh_serial_register(serial, ch34x_class);
-
-    struct cdc_line_coding linecoding;
-    linecoding.dwDTERate = 115200;
-    linecoding.bDataBits = 8;
-    linecoding.bParityType = 0;
-    linecoding.bCharFormat = 0;
-    usbh_ch34x_set_line_coding(ch34x_class, &linecoding);
-
-    usbh_bulk_urb_fill(urb, ch34x_class->hport, ch34x_class->bulkin, g_usbh_serial_vendor_rx_buf[serial->minor], sizeof(g_usbh_serial_vendor_rx_buf[serial->minor]), 0, usbh_ch34x_callback, ch34x_class);
-    ret = usbh_submit_urb(urb);
-    if (ret < 0) {
-        USB_LOG_ERR("usbh_submit_urb failed: %d\n", ret);
-        usbh_serial_unregister(serial);
-        return;
-    }
-}
-
-void usbh_ch34x_stop(struct usbh_ch34x *ch34x_class)
-{
-    struct usbh_serial *serial;
-
-    serial = (struct usbh_serial *)ch34x_class->user_data;
-    usbh_serial_unregister(serial);
-}
-#endif
-
-#if defined(PKG_CHERRYUSB_HOST_CP210X) || defined(RT_CHERRYUSB_HOST_CP210X)
-void usbh_cp210x_callback(void *arg, int nbytes)
-{
-    struct usbh_cp210x *cp210x_class = (struct usbh_cp210x *)arg;
-    struct usbh_serial *serial;
-    int ret;
-    struct usbh_urb *urb = &cp210x_class->bulkin_urb;
-
-    if (nbytes > 0) {
-        serial = (struct usbh_serial *)cp210x_class->user_data;
-        rt_ringbuffer_put(&serial->rx_rb, g_usbh_serial_vendor_rx_buf[serial->minor], nbytes);
-
-        if (serial->parent.rx_indicate) {
-            serial->parent.rx_indicate(&serial->parent, nbytes);
-        }
-
-        usbh_bulk_urb_fill(urb, cp210x_class->hport, cp210x_class->bulkin, g_usbh_serial_vendor_rx_buf[serial->minor], sizeof(g_usbh_serial_vendor_rx_buf[serial->minor]), 0, usbh_cp210x_callback, cp210x_class);
-        ret = usbh_submit_urb(urb);
-        if (ret < 0) {
-            USB_LOG_ERR("usbh_submit_urb failed: %d\n", ret);
-        }
-    }
-}
-
-void usbh_cp210x_run(struct usbh_cp210x *cp210x_class)
-{
-    struct usbh_serial *serial;
-    int ret;
-    struct usbh_urb *urb = &cp210x_class->bulkin_urb;
-
-    serial = usbh_serial_alloc(USBH_SERIAL_TYPE_CP210X);
-    cp210x_class->user_data = serial;
-
-    usbh_serial_register(serial, cp210x_class);
-
-    struct cdc_line_coding linecoding;
-    linecoding.dwDTERate = 115200;
-    linecoding.bDataBits = 8;
-    linecoding.bParityType = 0;
-    linecoding.bCharFormat = 0;
-    usbh_cp210x_set_line_coding(cp210x_class, &linecoding);
-
-    usbh_bulk_urb_fill(urb, cp210x_class->hport, cp210x_class->bulkin, g_usbh_serial_vendor_rx_buf[serial->minor], sizeof(g_usbh_serial_vendor_rx_buf[serial->minor]), 0, usbh_cp210x_callback, cp210x_class);
-    ret = usbh_submit_urb(urb);
-    if (ret < 0) {
-        USB_LOG_ERR("usbh_submit_urb failed: %d\n", ret);
-        usbh_serial_unregister(serial);
-        return;
-    }
-}
-
-void usbh_cp210x_stop(struct usbh_cp210x *cp210x_class)
-{
-    struct usbh_serial *serial;
-
-    serial = (struct usbh_serial *)cp210x_class->user_data;
-    usbh_serial_unregister(serial);
-}
-#endif
-
-#if defined(PKG_CHERRYUSB_HOST_PL2303) || defined(RT_CHERRYUSB_HOST_PL2303)
-void usbh_pl2303_callback(void *arg, int nbytes)
-{
-    struct usbh_pl2303 *pl2303_class = (struct usbh_pl2303 *)arg;
-    struct usbh_serial *serial;
-    int ret;
-    struct usbh_urb *urb = &pl2303_class->bulkin_urb;
-
-    if (nbytes > 0) {
-        serial = (struct usbh_serial *)pl2303_class->user_data;
-        rt_ringbuffer_put(&serial->rx_rb, g_usbh_serial_vendor_rx_buf[serial->minor], nbytes);
-
-        if (serial->parent.rx_indicate) {
-            serial->parent.rx_indicate(&serial->parent, nbytes);
-        }
-
-        usbh_bulk_urb_fill(urb, pl2303_class->hport, pl2303_class->bulkin, g_usbh_serial_vendor_rx_buf[serial->minor], sizeof(g_usbh_serial_vendor_rx_buf[serial->minor]), 0, usbh_pl2303_callback, pl2303_class);
-        ret = usbh_submit_urb(urb);
-        if (ret < 0) {
-            USB_LOG_ERR("usbh_submit_urb failed: %d\n", ret);
-        }
-    }
-}
-
-void usbh_pl2303_run(struct usbh_pl2303 *pl2303_class)
-{
-    struct usbh_serial *serial;
-    int ret;
-    struct usbh_urb *urb = &pl2303_class->bulkin_urb;
-
-    serial = usbh_serial_alloc(USBH_SERIAL_TYPE_PL2303);
-    pl2303_class->user_data = serial;
-
-    usbh_serial_register(serial, pl2303_class);
-
-    struct cdc_line_coding linecoding;
-    linecoding.dwDTERate = 115200;
-    linecoding.bDataBits = 8;
-    linecoding.bParityType = 0;
-    linecoding.bCharFormat = 0;
-    usbh_pl2303_set_line_coding(pl2303_class, &linecoding);
-
-    usbh_bulk_urb_fill(urb, pl2303_class->hport, pl2303_class->bulkin, g_usbh_serial_vendor_rx_buf[serial->minor], sizeof(g_usbh_serial_vendor_rx_buf[serial->minor]), 0, usbh_pl2303_callback, pl2303_class);
-    ret = usbh_submit_urb(urb);
-    if (ret < 0) {
-        USB_LOG_ERR("usbh_submit_urb failed: %d\n", ret);
-        usbh_serial_unregister(serial);
-        return;
-    }
-}
-
-void usbh_pl2303_stop(struct usbh_pl2303 *pl2303_class)
-{
-    struct usbh_serial *serial;
-
-    serial = (struct usbh_serial *)pl2303_class->user_data;
-    usbh_serial_unregister(serial);
-}
-#endif
--- a/Show More
+++ b/Show More
Author	SHA1	Message	Date
sakumisu	76b3720445	docs: release v1.6.0 Signed-off-by: sakumisu <1203593632@qq.com>	2026-01-28 13:15:53 +08:00
sakumisu	bad94dfc67	update(class/cdc): change serial state macro Signed-off-by: sakumisu <1203593632@qq.com>	2026-01-28 13:15:53 +08:00
sakumisu	2783329509	chore: replace tab with space Signed-off-by: sakumisu <1203593632@qq.com>	2026-01-28 13:15:53 +08:00
sakumisu	3181819214	update(class/gamepad): use hid intf init api Signed-off-by: sakumisu <1203593632@qq.com>	2026-01-28 13:15:53 +08:00
sakumisu	12b3eca447	chore: update kconfig Signed-off-by: sakumisu <1203593632@qq.com>	2026-01-28 13:15:53 +08:00
sakumisu	1a3343bc11	update(port/ehci): set roothub speed to high Signed-off-by: sakumisu <1203593632@qq.com>	2026-01-28 13:15:53 +08:00
sakumisu	0c86f1f5ff	update(port/dwc2/usb_glue_infineon): add some check for m55 Signed-off-by: sakumisu <1203593632@qq.com>	2026-01-28 13:15:31 +08:00
sakumisu	e44d44f5b6	update(demo): remove all old desc api Signed-off-by: sakumisu <1203593632@qq.com>	2026-01-24 17:39:42 +08:00
sakumisu	0ca521a1d0	update(port/dwc2/usb_dc_dwc2): move read setup into USB_OTG_GINTSTS_ENUMDNE irq Signed-off-by: sakumisu <1203593632@qq.com>	2026-01-22 21:05:15 +08:00
sakumisu	309aa2ffd8	feat(port/dwc2): add infineon glue Signed-off-by: sakumisu <1203593632@qq.com>	2026-01-22 21:01:32 +08:00
sakumisu	013f51312a	update(port/dwc2): add usbd_dwc2_get_system_clock to replace SystemCoreClock Signed-off-by: sakumisu <1203593632@qq.com>	2026-01-22 21:00:41 +08:00
sakumisu	2a20e074b3	update(port/dwc2): add check for fifo value with power on value Signed-off-by: sakumisu <1203593632@qq.com>	2026-01-20 21:31:53 +08:00
MDLZCOOL	1528b533cf	feat(musb): add support for ti microcontroller with musb ip	2026-01-18 18:48:14 +08:00
MDLZCOOL	e414833589	fix(musb): fix `musb_pipe_alloc` missing `bus` parameter, and fix host checks in irq Includes: - add `struct usbh_bus *bus` parameter to `musb_pipe_alloc` - correct call in `usbh_submit_urb` - correct host checks in irq	2026-01-18 18:47:55 +08:00
SunJ	1de6b93045	refactor(osal): replace NuttX internal APIs with POSIX APIs Replace nxsched_self() and nxsched_set_priority() with standard POSIX sched_getparam() and sched_setparam() in usb_osal_thread_schedule_other(). This improves portability and follows POSIX standards for thread priority management. Change-Id: I2e637268f77e200fbdee3e7713cba1b115976696 Signed-off-by: SunJ <jsun@bouffalolab.com>	2026-01-13 17:43:29 +08:00
sakumisu	43cf82642c	update(port/dwc2/usb_dc_dwc2): remove __UNALIGNED_UINT32_READ and __UNALIGNED_UINT32_WRITE because buf is always align4, only receive one setup packet Signed-off-by: sakumisu <1203593632@qq.com>	2026-01-12 18:39:09 +08:00
HakumenJean	8d7a98fc9d	Update T113S3 glue	2026-01-08 16:26:15 +08:00
sakumisu	ce32f73100	docs: fix typo	2026-01-07 22:37:14 +08:00
sakumisu	44d92be013	update(platform): remove net class weak api, check CONFIG_USBHOST_PLATFORM_* macro is defined or not in usbh_lwip.c Signed-off-by: sakumisu <1203593632@qq.com>	2026-01-05 21:31:41 +08:00
sakumisu	d172c89eef	fix(port/dwc2/usb_hc_dwc2): restart split transfer with dwc2_xxx_urb_init, do not use dwc2_chan_reenable api Signed-off-by: sakumisu <1203593632@qq.com>	2026-01-05 21:22:09 +08:00
Alvin	9cbe4502e7	fix(bluetooth): Correct HCI packet type from SCO to ISO in USB host.	2026-01-05 17:46:15 +08:00
sakumisu	d50159638d	fix(demo): fix cdc ecm string check Signed-off-by: sakumisu <1203593632@qq.com>	2026-01-04 21:50:44 +08:00
sakumisu	fb6dbb442e	docs: update net rst and readme Signed-off-by: sakumisu <1203593632@qq.com>	2025-12-31 14:47:15 +08:00
sakumisu	7a2089f032	feat(class/gamepad): add gamepad device Signed-off-by: sakumisu <1203593632@qq.com>	2025-12-29 21:33:48 +08:00
sakumisu	be5ba641dd	fix(port/dwc2/usb_hc_dwc2): fix incorrect HFIR_RELOAD_CTRL setting Signed-off-by: sakumisu <1203593632@qq.com>	2025-12-26 21:55:12 +08:00
sakumisu	7317913efa	fix: fix winusb string and audio macro Signed-off-by: sakumisu <1203593632@qq.com>	2025-12-26 12:41:31 +08:00
sakumisu	94d1c6b1be	fix(core/otg): fix deinit flag and mode check Signed-off-by: sakumisu <1203593632@qq.com>	2025-12-22 16:15:55 +08:00
sakumisu	3f23af5ad7	fix(serial): add default handler for gsm Signed-off-by: sakumisu <1203593632@qq.com>	2025-12-21 21:12:15 +08:00
MDLZCOOL	34166b361a	fix(rp2040): add rp2040 support to scons	2025-12-19 11:07:27 +08:00
sakumisu	a5f765d46e	ci: add lshid cmd Signed-off-by: sakumisu <1203593632@qq.com>	2025-12-18 22:09:48 +08:00
sakumisu	43b8237713	update(demo): format with macro Signed-off-by: sakumisu <1203593632@qq.com>	2025-12-18 22:09:48 +08:00
sakumisu	20199f08c4	docs: update cache qa Signed-off-by: sakumisu <1203593632@qq.com>	2025-12-18 22:09:48 +08:00
sakumisu	8c01a6ea46	update(usbh_gsm): add ml307r vid Signed-off-by: sakumisu <1203593632@qq.com>	2025-12-18 22:09:43 +08:00
sakumisu	55ef0f6309	style: change \t to space Signed-off-by: sakumisu <1203593632@qq.com>	2025-12-17 20:43:42 +08:00
sakumisu	587339b733	feat(class/hid): add hid report parse api Signed-off-by: sakumisu <1203593632@qq.com>	2025-12-17 20:43:15 +08:00
sakumisu	a6ffbd3600	fix(usbh_serial): fix serial iobuffer size, remove length limit of write Signed-off-by: sakumisu <1203593632@qq.com>	2025-12-17 20:42:45 +08:00
sakumisu	baf2a56c93	docs: update rst Signed-off-by: sakumisu <1203593632@qq.com>	2025-12-17 14:23:38 +08:00
sakumisu	7b9b396ab4	fix(usbh_cp210x): remove ununsed code Signed-off-by: sakumisu <1203593632@qq.com>	2025-12-15 20:54:05 +08:00
sakumisu	3a1f3c3ba4	update: update host demo macros without value Signed-off-by: sakumisu <1203593632@qq.com>	2025-12-15 20:53:45 +08:00
MDLZCOOL	1cbe3c5957	fix(serial): fix host serial framework support for rt-thread	2025-12-15 09:23:03 +08:00
MDLZCOOL	11b91a0283	fix(usbh_serial): don't resubmit the read urb when rx short packet	2025-12-14 08:51:51 +08:00
MDLZCOOL	b1ca0406a5	fix(usbh_ch34x): program baudrate registers after divisor calculation	2025-12-14 08:51:51 +08:00
MDLZCOOL	799ae48f7c	feat(usbh_serial): Use Ping-Pong Buffer to Decrease Packet Loss	2025-12-14 08:51:51 +08:00
sakumisu	da2263728a	refactor(serial): add host serial framework Signed-off-by: sakumisu <1203593632@qq.com>	2025-12-12 22:45:10 +08:00
sakumisu	707e865627	fix warning Signed-off-by: sakumisu <1203593632@qq.com>	2025-12-12 22:43:35 +08:00
sakumisu	e951fd01c8	chore(cmake): fix cdc symbol name Signed-off-by: sakumisu <1203593632@qq.com>	2025-12-12 22:33:06 +08:00
sakumisu	bf1d9db9a1	update(demo): format uac demos with macros Signed-off-by: sakumisu <1203593632@qq.com>	2025-12-05 18:33:09 +08:00
sakumisu	a20f53c6de	update(demo): add more descriptor init macros Signed-off-by: sakumisu <1203593632@qq.com>	2025-12-04 10:55:01 +08:00
sakumisu	006123c296	update: remove old bl616 wifi driver, add new api Signed-off-by: sakumisu <1203593632@qq.com>	2025-12-03 17:27:28 +08:00
sakumisu	670bde3671	fix(core): fix warnings Signed-off-by: sakumisu <1203593632@qq.com>	2025-12-03 13:38:49 +08:00
sakumisu	7098d42b87	update(port/dwc2/usb_hc_dwc2): reset channel with dwc2_halt in deinit Signed-off-by: sakumisu <1203593632@qq.com>	2025-12-01 20:31:59 +08:00
sakumisu	e257e6ce5c	update: remove ununsed bl616 wifi driver Signed-off-by: sakumisu <1203593632@qq.com>	2025-12-01 12:36:14 +08:00
sakumisu	41ffa44a3f	docs: update rst Signed-off-by: sakumisu <1203593632@qq.com>	2025-12-01 12:28:55 +08:00
sakumisu	9efc8af07b	update(demo): add comment for uac Signed-off-by: sakumisu <1203593632@qq.com>	2025-12-01 12:28:27 +08:00
sakumisu	3e28c528a4	update(class/hub): remove hport sources safely Signed-off-by: sakumisu <1203593632@qq.com>	2025-11-28 11:45:20 +08:00
sakumisu	e10b44f64e	feat(core/usbh_core): support custom config index Signed-off-by: sakumisu <1203593632@qq.com>	2025-11-27 22:43:56 +08:00
sakumisu	b1bbc9d39d	update(port/musb/usb_hc_musb): reenable pipe alloc & free Signed-off-by: sakumisu <1203593632@qq.com>	2025-11-27 22:36:53 +08:00
sakumisu	31b79434ce	docs: update rst Signed-off-by: sakumisu <1203593632@qq.com>	2025-11-26 18:24:45 +08:00
sakumisu	f9a8b29b8a	docs: bump version to v1.5.3 Signed-off-by: sakumisu <1203593632@qq.com>	2025-11-25 15:29:53 +08:00
sakumisu	a8939d5d7b	update: remove ununsed osal Signed-off-by: sakumisu <1203593632@qq.com>	2025-11-25 15:29:53 +08:00
Zhihong Chen	5641a2b882	port: update hpmicro port files for otg Signed-off-by: Zhihong Chen <zhihong.chen@hpmicro.com>	2025-11-25 15:29:53 +08:00
sakumisu	1cc9877b39	fix warning Signed-off-by: sakumisu <1203593632@qq.com>	2025-11-25 15:29:53 +08:00
sakumisu	62fbc1ffee	refactor(otg): refactor otg framework Signed-off-by: sakumisu <1203593632@qq.com>	2025-11-25 15:29:52 +08:00
sakumisu	d68064e4e3	feat(class): support more match flags for cdc acm & rndis Signed-off-by: sakumisu <1203593632@qq.com>	2025-11-25 15:29:01 +08:00
sakumisu	47cc574730	update(core): change assert with USB_ASSERT_MSG Signed-off-by: sakumisu <1203593632@qq.com>	2025-11-24 20:36:23 +08:00
sakumisu	510b34aa3c	update(platform/daplink): sync with cherrydap Signed-off-by: sakumisu <1203593632@qq.com>	2025-11-24 20:36:23 +08:00
sakumisu	5917aff5f5	fix(osal/usb_osal_ucosiii): fix msleep opt Signed-off-by: sakumisu <1203593632@qq.com>	2025-11-23 21:36:45 +08:00
sakumisu	449ea2664e	feat(core/usbh_core): support interfacenum match flag Signed-off-by: sakumisu <1203593632@qq.com>	2025-11-20 22:49:41 +08:00
sakumisu	21633d2138	update(port/dwc2/usb_glue_st): increase ep1 tx fifo for audio demo Signed-off-by: sakumisu <1203593632@qq.com>	2025-11-19 22:22:35 +08:00
sakumisu	9ebc004aa4	update(core/usbh_core): print interface num when load driver Signed-off-by: sakumisu <1203593632@qq.com>	2025-11-13 22:04:20 +08:00
sakumisu	9433ed3da5	docs: update rst Signed-off-by: sakumisu <1203593632@qq.com>	2025-11-13 22:03:36 +08:00
sakumisu	729136ea80	refactor(core/usbh_core): refactor lsusb Signed-off-by: sakumisu <1203593632@qq.com>	2025-11-11 22:46:20 +08:00
sakumisu	a2352bffdb	ci: update bl & hpm demo Signed-off-by: sakumisu <1203593632@qq.com>	2025-11-10 20:34:55 +08:00
sakumisu	9a1ead9e8a	fix(port/dwc2/usb_dc_dwc2): invalid cache before all read setup Signed-off-by: sakumisu <1203593632@qq.com>	2025-11-09 22:29:18 +08:00
蒙蒙plus	bb2a50712b	fix(usb_dc_dwc2): add unaligned read/write macros for IAR compiler	2025-11-07 15:40:18 +08:00
Rbb666	eec89fd768	fix:Fix RNDIS DHCP dependency,and delay implementation	2025-11-07 15:35:58 +08:00
sakumisu	e453e72bf1	fix(osal/usb_osal_threadx): delete self in another thread Signed-off-by: sakumisu <1203593632@qq.com>	2025-11-05 20:40:47 +08:00
sakumisu	316c46e797	update(platform/rtthread): change LWIP_NO_RX_THREAD check error to warning Signed-off-by: sakumisu <1203593632@qq.com>	2025-11-05 20:40:09 +08:00
sakumisu	5a4b68608b	ci: enable all class Signed-off-by: sakumisu <1203593632@qq.com>	2025-11-05 20:39:24 +08:00
sakumisu	cddc373eb2	feat(platform/idf): add fatfs port for host msc Signed-off-by: sakumisu <1203593632@qq.com>	2025-11-04 22:58:09 +08:00
sakumisu	cf85c8851a	fix(osal/usb_osal_ucosiii): lock before free Signed-off-by: sakumisu <1203593632@qq.com>	2025-11-04 21:50:51 +08:00
sakumisu	39bff0fb10	fix(class/hub): delete thread before delete mq Signed-off-by: sakumisu <1203593632@qq.com>	2025-11-04 21:50:43 +08:00
sakumisu	d0a8f5b2d0	update(platform/rtthread): add more check for chip cache Signed-off-by: sakumisu <1203593632@qq.com>	2025-11-04 21:38:57 +08:00
sakumisu	d482b7c738	update(core/usbh_core): add retry for control transfer, some devices are flakey Signed-off-by: sakumisu <1203593632@qq.com>	2025-11-03 22:01:12 +08:00
sakumisu	1d3b7fb203	fix(osal/usb_osal_ucosiii): memset after malloc Signed-off-by: sakumisu <1203593632@qq.com>	2025-11-03 21:21:37 +08:00
sakumisu	0c220ea127	chore: add build ci Signed-off-by: sakumisu <1203593632@qq.com>	2025-11-03 21:21:26 +08:00
sakumisu	922ff0be42	fix warning Signed-off-by: sakumisu <1203593632@qq.com>	2025-10-31 22:20:42 +08:00
sakumisu	855898d134	update(port/chipidea): add dcache support for device Signed-off-by: sakumisu <1203593632@qq.com>	2025-10-30 21:33:23 +08:00
sakumisu	dd46b8ce39	feat: support custom ep0 mps Signed-off-by: sakumisu <1203593632@qq.com>	2025-10-22 20:34:22 +08:00
sakumisu	76e7c1e163	feat(demo): add mongoose rndis demo Signed-off-by: sakumisu <1203593632@qq.com>	2025-10-16 18:38:58 +08:00
MDLZCOOL	3e3b08b152	refactor(usb_osal_threadx): optimize the creation and deletion of threads - Allocate only once at `usb_osal_thread_create`. - Fixed a null pointer crash in `usb_osal_thread_delete`. - Standardized the return value of `usb_osal_sem_give`.	2025-10-15 22:40:06 -07:00
sakumisu	2e37b620b4	update(port/hpmicro): add dcache support for device Signed-off-by: sakumisu <1203593632@qq.com>	2025-10-11 20:29:54 +08:00
sakumisu	31fcee272d	update(demo/cdc_acm_rttchardev): add finsh & console switch with usb Signed-off-by: sakumisu <1203593632@qq.com>	2025-10-11 20:28:54 +08:00
sakumisu	3aa8420342	update(platform): remove CONFIG_USB_DCACHE_ENABLE, always check align size Signed-off-by: sakumisu <1203593632@qq.com>	2025-10-11 20:26:19 +08:00
sakumisu	498ba9b4e1	feat(osal): add ucosiii osal Signed-off-by: sakumisu <1203593632@qq.com>	2025-10-09 21:28:41 +08:00
sakumisu	825e5b1f9e	update(port/dwc2/usb_glue_hc): update hc port Signed-off-by: sakumisu <1203593632@qq.com>	2025-10-09 21:28:13 +08:00
sakumisu	ec82b8a36c	update(hub/usbh_hub): add check for nports Signed-off-by: sakumisu <1203593632@qq.com>	2025-10-09 21:27:17 +08:00
sakumisu	5fcbbcd93a	fix: fix warning Signed-off-by: sakumisu <1203593632@qq.com>	2025-10-09 21:26:48 +08:00
sakumisu	c25171d69f	fix(port/ehci): clear iaad status before set Signed-off-by: sakumisu <1203593632@qq.com>	2025-09-27 22:20:10 +08:00
sakumisu	bfb55eeb36	feat(class/video/usbh_video): support bulk mode Signed-off-by: sakumisu <1203593632@qq.com>	2025-09-27 20:58:45 +08:00
LiPeng	5ea75a14d0	fix: Remove usb component private requirement for idf v6	2025-09-11 17:00:45 +08:00
LiPeng	e748e55f4d	bugfix: Fix some compilation errors	2025-09-01 20:06:25 +08:00
LiPeng	55ce05f270	bugfix: Fix support for idf versions lower than 5.3	2025-09-01 15:35:51 +08:00
Egahp	5d5b61a606	feat: host add event callback mechanism similar to device * fix: fix warning for speed_table * fix(port/dwc2/usb_hc_dwc2): add roothub.speed init * feat(usbh_core): add event_callback * fix(usbh_hub): fix event device reset port * fix(usbh_hub): remove event init when init failed * feat(usbh_core): add default dummy_event_callback * fix(usbh_hub): emit reset event only on successful reset * fix(usbh_core): emit interface start only on successful connect class driver * feat(usbh_core): change event_callback to typedef * feat(port): update port usbh init params * doc: update usbh_initialize desc * fix(usbh_core): check result from ret == 0 change to ret >= 0 --------- Signed-off-by: egahp <2687434412@qq.com>	2025-08-30 19:24:02 +08:00
sakumisu	257b1d4d20	fix(demo): fix missing ecm mac address string Signed-off-by: sakumisu <1203593632@qq.com>	2025-08-27 21:23:35 +08:00
sakumisu	8c47395904	docs: remove ununsed code Signed-off-by: sakumisu <1203593632@qq.com>	2025-08-27 21:21:09 +08:00
sakumisu	5130d22766	refactor(core/usbh_core): refactor devaddr allocation, use auto increment Signed-off-by: sakumisu <1203593632@qq.com>	2025-08-27 21:19:43 +08:00
sakumisu	6256260203	style: remove printf with USB_LOG_XXX Signed-off-by: sakumisu <1203593632@qq.com>	2025-08-27 21:01:34 +08:00
HalfSweet	f0d93dcdc1	feat: Add MUSB IP without multipoint feature support	2025-08-11 22:05:55 +08:00