diff --git a/bsp/bsp_common/platform/bflb_platform.c b/bsp/bsp_common/platform/bflb_platform.c
index d5f1a59f..4f9c45f0 100644
--- a/bsp/bsp_common/platform/bflb_platform.c
+++ b/bsp/bsp_common/platform/bflb_platform.c
@@ -49,6 +49,12 @@ void bflb_platform_init(uint32_t baudrate)
 
     board_init();
 
+    uint8_t ret = 0;
+
+    if (mmheap_init_with_pool(&__HeapBase, (size_t)&__HeapLimit - (size_t)&__HeapBase)) {
+        ret = 1;
+    }
+
     if (!uart_dbg_disable) {
         uart_register(board_get_debug_uart_index(), "debug_log", DEVICE_OFLAG_RDWR);
         struct device *uart = device_find("debug_log");
@@ -62,11 +68,10 @@ void bflb_platform_init(uint32_t baudrate)
         bl_show_info();
     }
 
-    if (!mmheap_init_with_pool(&__HeapBase, (size_t)&__HeapLimit - (size_t)&__HeapBase)) {
+    if (!ret)
         MSG("dynamic memory init success,heap size = %d Kbyte \r\n", ((size_t)&__HeapLimit - (size_t)&__HeapBase) / 1000);
-    } else {
+    else
         MSG("dynamic memory init error\r\n");
-    }
 
     enable_irq();
 }
diff --git a/bsp/bsp_common/platform/bflb_platform.h b/bsp/bsp_common/platform/bflb_platform.h
index 8fafdc97..dfd4c1f7 100644
--- a/bsp/bsp_common/platform/bflb_platform.h
+++ b/bsp/bsp_common/platform/bflb_platform.h
@@ -31,23 +31,16 @@ extern "C" {
 #include "misc.h"
 //#include "mcu_sdk_version.h"
 
-#define printf(a, ...)  bflb_platform_printf(a, ##__VA_ARGS__)
 #define MSG(a, ...)     bflb_platform_printf(a, ##__VA_ARGS__)
 #define MSG_DBG(a, ...) bflb_platform_printf(a, ##__VA_ARGS__)
 #define MSG_ERR(a, ...) bflb_platform_printf(a, ##__VA_ARGS__)
-#define BL_CASE_FAIL                   \
-    {                                  \
-        MSG(" Case Fail\r\n");         \
-        while (1) {                    \
-            bflb_platform_delay_ms(1); \
-        }                              \
+#define BL_CASE_FAIL          \
+    {                         \
+        MSG("case fail\r\n"); \
     }
-#define BL_CASE_SUCCESS                \
-    {                                  \
-        MSG(" Case Success\r\n");      \
-        while (1) {                    \
-            bflb_platform_delay_ms(1); \
-        }                              \
+#define BL_CASE_SUCCESS          \
+    {                            \
+        MSG("case success\r\n"); \
     }
 
 /* compatible with old version */
diff --git a/bsp/bsp_common/usb/usb_dc.c b/bsp/bsp_common/usb/usb_dc.c
index 254f7ede..ddc5541b 100644
--- a/bsp/bsp_common/usb/usb_dc.c
+++ b/bsp/bsp_common/usb/usb_dc.c
@@ -77,7 +77,7 @@ struct device *usb_dc_init(void)
 
 int usbd_set_address(const uint8_t addr)
 {
-    return device_control(usb, DEVICE_CTRL_USB_DC_SET_ADDR, (void *)(uint32_t)addr);
+    return usb_dc_set_dev_address(addr);
 }
 
 int usbd_ep_open(const struct usbd_endpoint_cfg *ep_cfg)
@@ -86,16 +86,15 @@ int usbd_ep_open(const struct usbd_endpoint_cfg *ep_cfg)
 }
 int usbd_ep_close(const uint8_t ep)
 {
-    device_control(usb, DEVICE_CTRL_USB_DC_SET_NACK, (void *)(uint32_t)ep);
-    return 0;
+    return usb_dc_ep_close(ep);
 }
 int usbd_ep_set_stall(const uint8_t ep)
 {
-    return device_control(usb, DEVICE_CTRL_USB_DC_SET_STALL, (void *)(uint32_t)ep);
+    return usb_dc_ep_set_stall(ep);
 }
 int usbd_ep_clear_stall(const uint8_t ep)
 {
-    return device_control(usb, DEVICE_CTRL_USB_DC_CLR_STALL, (void *)(uint32_t)ep);
+    return usb_dc_ep_clear_stall(ep);
 }
 int usbd_ep_is_stalled(const uint8_t ep, uint8_t *stalled)
 {