diff --git a/.config b/.config
index eae0222..e70ee33 100644
--- a/.config
+++ b/.config
@@ -75,9 +75,7 @@ CONFIG_RT_USING_DEVICE=y
 # CONFIG_RT_USING_INTERRUPT_INFO is not set
 # CONFIG_RT_USING_THREADSAFE_PRINTF is not set
 # CONFIG_RT_USING_SCHED_THREAD_CTX is not set
-CONFIG_RT_USING_CONSOLE=y
-CONFIG_RT_CONSOLEBUF_SIZE=128
-CONFIG_RT_CONSOLE_DEVICE_NAME="vcom"
+# CONFIG_RT_USING_CONSOLE is not set
 CONFIG_RT_VER_NUM=0x50100
 # CONFIG_RT_USING_STDC_ATOMIC is not set
 CONFIG_RT_BACKTRACE_LEVEL_MAX_NR=32
@@ -97,7 +95,6 @@ CONFIG_RT_USING_USER_MAIN=y
 CONFIG_RT_MAIN_THREAD_STACK_SIZE=1536
 CONFIG_RT_MAIN_THREAD_PRIORITY=10
 # CONFIG_RT_USING_LEGACY is not set
-# CONFIG_RT_USING_MSH is not set
 
 #
 # DFS: device virtual file system
@@ -152,26 +149,8 @@ CONFIG_RT_USING_PIN=y
 #
 # Using USB
 #
-CONFIG_RT_USING_USB=y
 # CONFIG_RT_USING_USB_HOST is not set
-CONFIG_RT_USING_USB_DEVICE=y
-CONFIG_RT_USBD_THREAD_STACK_SZ=2048
-CONFIG_USB_VENDOR_ID=0x0FFE
-CONFIG_USB_PRODUCT_ID=0x0001
-# CONFIG_RT_USB_DEVICE_COMPOSITE is not set
-# CONFIG__RT_USB_DEVICE_NONE is not set
-CONFIG__RT_USB_DEVICE_CDC=y
-# CONFIG__RT_USB_DEVICE_MSTORAGE is not set
-# CONFIG__RT_USB_DEVICE_HID is not set
-# CONFIG__RT_USB_DEVICE_WINUSB is not set
-# CONFIG__RT_USB_DEVICE_AUDIO is not set
-CONFIG_RT_USB_DEVICE_CDC=y
-CONFIG_RT_VCOM_TASK_STK_SIZE=512
-CONFIG_RT_CDC_RX_BUFSIZE=128
-# CONFIG_RT_VCOM_TX_USE_DMA is not set
-CONFIG_RT_VCOM_SERNO="32021919830108"
-CONFIG_RT_VCOM_SER_LEN=14
-CONFIG_RT_VCOM_TX_TIMEOUT=1000
+# CONFIG_RT_USING_USB_DEVICE is not set
 # end of Using USB
 # end of Device Drivers
 
@@ -1281,7 +1260,7 @@ CONFIG_SOC_SERIES_STM32F1=y
 # On-chip Peripheral Drivers
 #
 CONFIG_BSP_USING_GPIO=y
-CONFIG_BSP_USING_USBD=y
+# CONFIG_BSP_USING_USBD is not set
 CONFIG_BSP_USING_UART=y
 CONFIG_BSP_USING_UART1=y
 # CONFIG_BSP_UART1_RX_USING_DMA is not set
diff --git a/applications/main.c b/applications/main.c
index 18dcaaf..dc792fb 100644
--- a/applications/main.c
+++ b/applications/main.c
@@ -28,9 +28,9 @@ static void task_com_entry(void *arg) { com_task(); }
 
 int main(void) {
 
-  rt_device_t vcom = rt_device_find("vcom");
-  rt_device_open(vcom, RT_DEVICE_FLAG_RDWR);
-  rt_console_set_device("vcom");
+  // rt_device_t vcom = rt_device_find("vcom");
+  // rt_device_open(vcom, RT_DEVICE_FLAG_RDWR);
+  // rt_console_set_device("vcom");
 
   u3 = rt_device_find("uart3");
   rt_device_open(u3, RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_INT_TX |
diff --git a/rtconfig.h b/rtconfig.h
index f272c3c..5d1453a 100644
--- a/rtconfig.h
+++ b/rtconfig.h
@@ -44,9 +44,6 @@
 #define RT_USING_HEAP
 /* end of Memory Management */
 #define RT_USING_DEVICE
-#define RT_USING_CONSOLE
-#define RT_CONSOLEBUF_SIZE 128
-#define RT_CONSOLE_DEVICE_NAME "vcom"
 #define RT_VER_NUM 0x50100
 #define RT_BACKTRACE_LEVEL_MAX_NR 32
 /* end of RT-Thread Kernel */
@@ -78,18 +75,6 @@
 
 /* Using USB */
 
-#define RT_USING_USB
-#define RT_USING_USB_DEVICE
-#define RT_USBD_THREAD_STACK_SZ 2048
-#define USB_VENDOR_ID 0x0FFE
-#define USB_PRODUCT_ID 0x0001
-#define _RT_USB_DEVICE_CDC
-#define RT_USB_DEVICE_CDC
-#define RT_VCOM_TASK_STK_SIZE 512
-#define RT_CDC_RX_BUFSIZE 128
-#define RT_VCOM_SERNO "32021919830108"
-#define RT_VCOM_SER_LEN 14
-#define RT_VCOM_TX_TIMEOUT 1000
 /* end of Using USB */
 /* end of Device Drivers */
 
@@ -339,7 +324,6 @@
 /* On-chip Peripheral Drivers */
 
 #define BSP_USING_GPIO
-#define BSP_USING_USBD
 #define BSP_USING_UART
 #define BSP_USING_UART1
 #define BSP_USING_UART2