diff --git a/Kconfig b/Kconfig
index 4ba2250c..0d20e212 100644
--- a/Kconfig
+++ b/Kconfig
@@ -26,8 +26,10 @@ if CHERRYUSB
             default CHERRYUSB_DEVICE_CUSTOM
             config CHERRYUSB_DEVICE_CUSTOM
                 bool "CUSTOM (Implement it yourself)"
-            config CHERRYUSB_DEVICE_FSDEV
-                bool "fsdev"
+            config CHERRYUSB_DEVICE_FSDEV_ST
+                bool "fsdev_st"
+            config CHERRYUSB_DEVICE_FSDEV_CUSTOM
+                bool "fsdev_custom"
             config CHERRYUSB_DEVICE_DWC2_ST
                 bool "dwc2_st"
             config CHERRYUSB_DEVICE_DWC2_ESP
diff --git a/SConscript b/SConscript
index 01818c25..071196df 100644
--- a/SConscript
+++ b/SConscript
@@ -33,7 +33,10 @@ if GetDepend(['PKG_CHERRYUSB_DEVICE']):
     if GetDepend(['PKG_CHERRYUSB_DEVICE_HS']):
         CPPDEFINES+=['CONFIG_USB_HS']
 
-    if GetDepend(['PKG_CHERRYUSB_DEVICE_FSDEV']):
+    if GetDepend(['PKG_CHERRYUSB_DEVICE_FSDEV_ST']):
+        src += Glob('port/fsdev/usb_dc_fsdev.c')
+        src += Glob('port/fsdev/usb_glue_st.c')
+    if GetDepend(['PKG_CHERRYUSB_DEVICE_FSDEV_CUSTOM']):
         src += Glob('port/fsdev/usb_dc_fsdev.c')
     if GetDepend(['PKG_CHERRYUSB_DEVICE_DWC2_ST']):
         src += Glob('port/dwc2/usb_dc_dwc2.c')
diff --git a/docs/source/quick_start/demo.rst b/docs/source/quick_start/demo.rst
index 2d2d9137..784f6cbe 100644
--- a/docs/source/quick_start/demo.rst
+++ b/docs/source/quick_start/demo.rst
@@ -166,7 +166,7 @@ USB Device 移植要点
 .. figure:: img/stm32_10.png
 .. figure:: img/stm32_11.png
 
-.. note :: 如果使用的是 dwc2，以下两个步骤从 V1.4.4 开始不再需要，**usb_glue_st.c** 文件中已经实现
+.. note :: 以下两个步骤从 V1.4.4 开始不再需要，**fsdev/usb_glue_st.c**, **dwc2/usb_glue_st.c** 文件中已经实现
 
 - 拷贝 **xxx_msp.c** 中的 **HAL_PCD_MspInit** 函数中的内容到 **usb_dc_low_level_init** 函数中，屏蔽 st 生成的 usb 初始化
 
@@ -208,7 +208,7 @@ USB Host 移植要点
     #define CONFIG_USB_DWC2_PTX_FIFO_SIZE (1024 / 4)
     #define CONFIG_USB_DWC2_RX_FIFO_SIZE ((1012 - CONFIG_USB_DWC2_NPTX_FIFO_SIZE - CONFIG_USB_DWC2_PTX_FIFO_SIZE) / 4)
 
-.. note :: 如果使用的是 dwc2，以下两个步骤从 V1.4.4 开始不再需要，**usb_glue_st.c** 文件中已经实现
+.. note :: 以下两个步骤从 V1.4.4 开始不再需要，**fsdev/usb_glue_st.c**, **dwc2/usb_glue_st.c** 文件中已经实现
 
 - 拷贝 **xxx_msp.c** 中的 `HAL_HCD_MspInit` 函数中的内容到 `usb_hc_low_level_init` 函数中，屏蔽 st 生成的 usb 初始化
 - 在中断函数中调用 `USBH_IRQHandler`，并传入 `busid`
diff --git a/port/fsdev/usb_glue_st.c b/port/fsdev/usb_glue_st.c
new file mode 100644
index 00000000..70a98acb
--- /dev/null
+++ b/port/fsdev/usb_glue_st.c
@@ -0,0 +1,66 @@
+/*
+ * Copyright (c) 2025, sakumisu
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#include "usbd_core.h"
+
+#if __has_include("stm32f0xx_hal.h")
+#include "stm32f0xx_hal.h"
+#elif __has_include("stm32f1xx_hal.h")
+#include "stm32f1xx_hal.h"
+#elif __has_include("stm32f3xx_hal.h")
+#include "stm32f3xx_hal.h"
+#elif __has_include("stm32g0xx_hal.h")
+#include "stm32g0xx_hal.h"
+#elif __has_include("stm32g4xx_hal.h")
+#include "stm32g4xx_hal.h"
+#elif __has_include("stm32l0xx_hal.h")
+#include "stm32l0xx_hal.h"
+#elif __has_include("stm32l1xx_hal.h")
+#include "stm32l1xx_hal.h"
+#elif __has_include("stm32l4xx_hal.h")
+#include "stm32l4xx_hal.h"
+#elif __has_include("stm32l5xx_hal.h")
+#include "stm32l5xx_hal.h"
+#endif
+
+#if !defined(HAL_PCD_MODULE_ENABLED)
+#error please define HAL_PCD_MODULE_ENABLED in stm32xxx_hal_conf.h
+#endif
+
+#ifndef CONFIG_USBDEV_FSDEV_PMA_ACCESS
+#error "please define CONFIG_USBDEV_FSDEV_PMA_ACCESS in usb_config.h"
+#endif
+
+#if CONFIG_USBDEV_FSDEV_PMA_ACCESS != PMA_ACCESS
+#error "CONFIG_USBDEV_FSDEV_PMA_ACCESS must be equal PMA_ACCESS"
+#endif
+
+struct fsdev_instance {
+    USB_TypeDef *Instance;
+};
+
+static struct fsdev_instance g_fsdev_instance;
+
+void usb_dc_low_level_init(uint8_t busid)
+{
+    g_fsdev_instance.Instance = (USB_TypeDef *)g_usbdev_bus[busid].reg_base;
+    HAL_PCD_MspInit((PCD_HandleTypeDef *)&g_fsdev_instance);
+}
+
+void usb_dc_low_level_deinit(uint8_t busid)
+{
+    g_fsdev_instance.Instance = (USB_TypeDef *)g_usbdev_bus[busid].reg_base;
+    HAL_PCD_MspDeInit((PCD_HandleTypeDef *)&g_fsdev_instance);
+}
+
+void USB_IRQHandler(void)
+{
+    USBD_IRQHandler(0);
+}
+
+void USB_LP_IRQHandler(void)
+{
+    USBD_IRQHandler(0);
+}
\ No newline at end of file