diff --git a/demo/cdc_acm_hid_msc_template.c b/demo/cdc_acm_hid_msc_template.c
index a93f64e2..02243991 100644
--- a/demo/cdc_acm_hid_msc_template.c
+++ b/demo/cdc_acm_hid_msc_template.c
@@ -148,35 +148,6 @@ const uint8_t cdc_acm_hid_msc_descriptor[] = {
     0x00
 };
 
-#define BLOCK_SIZE  512
-#define BLOCK_COUNT 10
-
-typedef struct
-{
-    uint8_t BlockSpace[BLOCK_SIZE];
-} BLOCK_TYPE;
-
-BLOCK_TYPE mass_block[BLOCK_COUNT];
-
-void usbd_msc_get_cap(uint8_t lun, uint32_t *block_num, uint16_t *block_size)
-{
-    *block_num = 1000; //Pretend having so many buffer,not has actually.
-    *block_size = BLOCK_SIZE;
-}
-int usbd_msc_sector_read(uint32_t sector, uint8_t *buffer, uint32_t length)
-{
-    if (sector < 10)
-        memcpy(buffer, mass_block[sector].BlockSpace, length);
-    return 0;
-}
-
-int usbd_msc_sector_write(uint32_t sector, uint8_t *buffer, uint32_t length)
-{
-    if (sector < 10)
-        memcpy(mass_block[sector].BlockSpace, buffer, length);
-    return 0;
-}
-
 /*!< hid mouse report descriptor */
 static const uint8_t hid_mouse_report_desc[HID_MOUSE_REPORT_DESC_SIZE] = {
     0x05, 0x01, // USAGE_PAGE (Generic Desktop)
@@ -372,3 +343,32 @@ void cdc_acm_data_send_with_dtr_test(void)
         }
     }
 }
+
+#define BLOCK_SIZE  512
+#define BLOCK_COUNT 10
+
+typedef struct
+{
+    uint8_t BlockSpace[BLOCK_SIZE];
+} BLOCK_TYPE;
+
+BLOCK_TYPE mass_block[BLOCK_COUNT];
+
+void usbd_msc_get_cap(uint8_t lun, uint32_t *block_num, uint16_t *block_size)
+{
+    *block_num = 1000; //Pretend having so many buffer,not has actually.
+    *block_size = BLOCK_SIZE;
+}
+int usbd_msc_sector_read(uint32_t sector, uint8_t *buffer, uint32_t length)
+{
+    if (sector < 10)
+        memcpy(buffer, mass_block[sector].BlockSpace, length);
+    return 0;
+}
+
+int usbd_msc_sector_write(uint32_t sector, uint8_t *buffer, uint32_t length)
+{
+    if (sector < 10)
+        memcpy(mass_block[sector].BlockSpace, buffer, length);
+    return 0;
+}
diff --git a/demo/cdc_rndis_template.c b/demo/cdc_rndis_template.c
index 4b9b6d10..49ec1106 100644
--- a/demo/cdc_rndis_template.c
+++ b/demo/cdc_rndis_template.c
@@ -101,6 +101,8 @@ static const uint8_t cdc_descriptor[] = {
     0x00
 };
 
+const uint8_t mac[6] = { 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff };
+
 #ifdef RT_USING_LWIP
 #include <rtthread.h>
 #include <rtdevice.h>
@@ -113,8 +115,6 @@ void usbd_configure_done_callback(void)
     eth_device_linkchange(&rndis_dev, RT_TRUE);
 }
 
-uint8_t mac[6] = { 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff };
-
 static rt_err_t rt_usbd_rndis_control(rt_device_t dev, int cmd, void *args)
 {
     switch (cmd) {
@@ -145,7 +145,7 @@ rt_err_t rt_usbd_rndis_eth_tx(rt_device_t dev, struct pbuf *p)
     return usbd_rndis_eth_tx(p);
 }
 
-void usbd_rndis_data_recv(uint8_t *data, uint32_t len)
+void usbd_rndis_data_recv_done(void)
 {
     eth_device_ready(&rndis_dev);
 }
@@ -165,6 +165,99 @@ void usbd_configure_done_callback(void)
 {
 }
 
+#include "lwip/err.h"
+#include "lwip/netif.h"
+#include "netif/ethernet.h"
+#include "netif/etharp.h"
+
+/*Static IP ADDRESS: IP_ADDR0.IP_ADDR1.IP_ADDR2.IP_ADDR3 */
+#define IP_ADDR0      (uint8_t)192
+#define IP_ADDR1      (uint8_t)168
+#define IP_ADDR2      (uint8_t)123
+#define IP_ADDR3      (uint8_t)100
+
+/*NETMASK*/
+#define NETMASK_ADDR0 (uint8_t)255
+#define NETMASK_ADDR1 (uint8_t)255
+#define NETMASK_ADDR2 (uint8_t)255
+#define NETMASK_ADDR3 (uint8_t)0
+
+/*Gateway Address*/
+#define GW_ADDR0      (uint8_t)192
+#define GW_ADDR1      (uint8_t)168
+#define GW_ADDR2      (uint8_t)123
+#define GW_ADDR3      (uint8_t)1
+
+static struct netif rndis_netif; //network interface
+
+const ip_addr_t ipaddr = IPADDR4_INIT_BYTES(IP_ADDR0, IP_ADDR1, IP_ADDR2, IP_ADDR3);
+const ip_addr_t netmask = IPADDR4_INIT_BYTES(NETMASK_ADDR0, NETMASK_ADDR1, NETMASK_ADDR2, NETMASK_ADDR3);
+const ip_addr_t gateway = IPADDR4_INIT_BYTES(GW_ADDR0, GW_ADDR1, GW_ADDR2, GW_ADDR3);
+
+/* Network interface name */
+#define IFNAME0       'C'
+#define IFNAME1       'R'
+
+err_t linkoutput_fn(struct netif *netif, struct pbuf *p)
+{
+    static int ret;
+    ret = usbd_rndis_eth_tx(0, p);
+
+    if (ret == 0)
+        return ERR_OK;
+    else
+        return ERR_BUF;
+}
+
+err_t rndisif_init(struct netif *netif)
+{
+    LWIP_ASSERT("netif != NULL", (netif != NULL));
+    netif->mtu = 1500;
+    netif->flags = NETIF_FLAG_BROADCAST | NETIF_FLAG_ETHARP | NETIF_FLAG_LINK_UP | NETIF_FLAG_UP;
+    netif->state = NULL;
+    netif->name[0] = IFNAME0;
+    netif->name[1] = IFNAME1;
+    netif->output = etharp_output;
+    netif->linkoutput = linkoutput_fn;
+    return ERR_OK;
+}
+
+err_t rndisif_input(struct netif *netif)
+{
+    static err_t err;
+    static struct pbuf *p;
+    p = usbd_rndis_eth_rx(0);
+    if (p != NULL) {
+        err = netif->input(p, netif);
+        if (err != ERR_OK) {
+            pbuf_free(p);
+        }
+    } else {
+        return ERR_BUF;
+    }
+    return err;
+}
+
+void rndis_lwip_init(void)
+{
+    struct netif *netif = &rndis_netif;
+
+    lwip_init();
+
+    netif = netif_add(netif, &ipaddr, &netmask, &gateway, NULL, rndisif_init, ethernet_input);
+    netif_set_default(netif);
+    // while (!netif_is_up(netif)) {
+    // }
+
+    // while (dhserv_init(&dhcp_config)) {}
+
+    // while (dnserv_init(&ipaddr, PORT_DNS, dns_query_proc)) {}
+}
+
+void rndis_input_poll(void)
+{
+    rndisif_input(&rndis_netif);
+}
 #endif /* RT_USING_LWIP */
 
 struct usbd_interface intf0;
@@ -174,6 +267,8 @@ void cdc_rndis_init(void)
 {
 #ifdef RT_USING_LWIP
     rt_usbd_rndis_init();
+#else
+    rndis_lwip_init();
 #endif
     usbd_desc_register(cdc_descriptor);
     usbd_add_interface(usbd_rndis_init_intf(&intf0, CDC_OUT_EP, CDC_IN_EP, CDC_INT_EP, mac));
diff --git a/demo/hid_custom_inout_template.c b/demo/hid_custom_inout_template.c
index 493a49e3..76e7acde 100644
--- a/demo/hid_custom_inout_template.c
+++ b/demo/hid_custom_inout_template.c
@@ -158,7 +158,8 @@ static const uint8_t hid_custom_report_desc[HID_CUSTOM_REPORT_DESC_SIZE] = {
     0xC0 /*     END_COLLECTION	             */
 };
 
-USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t read_buffer[2048];
+USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t read_buffer[64];
+USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t write_buffer[64];
 
 #define HID_STATE_IDLE 0
 #define HID_STATE_BUSY 1
@@ -208,9 +209,10 @@ void hid_custom_keyboard_init(void)
 
 void hid_custom_test(void)
 {
-    uint8_t sendbuffer[64] = { 0x00, 0x00, HID_KBD_USAGE_A, 0x00, 0x00, 0x00, 0x00, 0x00 };
+    const uint8_t sendbuffer[8] = { 0x00, 0x00, HID_KBD_USAGE_A, 0x00, 0x00, 0x00, 0x00, 0x00 };
 
-    int ret = usbd_ep_start_write(HIDRAW_IN_EP, sendbuffer, 8);
+    memcpy(write_buffer, sendbuffer, 8);
+    int ret = usbd_ep_start_write(HIDRAW_IN_EP, write_buffer, 8);
     if (ret < 0) {
         return;
     }
diff --git a/demo/hid_keyboard_template.c b/demo/hid_keyboard_template.c
index 662cae11..14959408 100644
--- a/demo/hid_keyboard_template.c
+++ b/demo/hid_keyboard_template.c
@@ -204,11 +204,14 @@ void hid_keyboard_init(void)
     usbd_initialize();
 }
 
-void hid_keyboard_test(void)
-{
-    uint8_t sendbuffer[8] = { 0x00, 0x00, HID_KBD_USAGE_A, 0x00, 0x00, 0x00, 0x00, 0x00 }; //A
+USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX uint8_t write_buffer[64];
 
-    int ret = usbd_ep_start_write(HID_INT_EP, sendbuffer, 8);
+void hid_keyboard_test(uint8_t busid)
+{
+    const uint8_t sendbuffer[8] = { 0x00, 0x00, HID_KBD_USAGE_A, 0x00, 0x00, 0x00, 0x00, 0x00 };
+
+    memcpy(write_buffer, sendbuffer, 8);
+    int ret = usbd_ep_start_write(HID_INT_EP, write_buffer, 8);
     if (ret < 0) {
         return;
     }
diff --git a/demo/hid_mouse_template.c b/demo/hid_mouse_template.c
index 718ab20a..96ad51c5 100644
--- a/demo/hid_mouse_template.c
+++ b/demo/hid_mouse_template.c
@@ -186,7 +186,7 @@ struct hid_mouse {
 };
 
 /*!< mouse report */
-static struct hid_mouse mouse_cfg;
+static USB_NOCACHE_RAM_SECTION USB_MEM_ALIGNX struct hid_mouse mouse_cfg;
 
 #define HID_STATE_IDLE 0
 #define HID_STATE_BUSY 1