diff --git a/usb_device.c b/usb_device.c
deleted file mode 100644
--- a/usb_device.c
+++ /dev/null
@@ -1,68 +0,0 @@
-/**
-  ******************************************************************************
-  * @file           : USB_DEVICE
-  * @date           : 03/01/2015 14:04:02  
-  * @version        : v1.0_Cube
-  * @brief          : This file implements the USB Device 
-  ******************************************************************************
-  *
-  * COPYRIGHT(c) 2015 STMicroelectronics
-  *
-  * Redistribution and use in source and binary forms, with or without modification,
-  * are permitted provided that the following conditions are met:
-  * 1. Redistributions of source code must retain the above copyright notice,
-  * this list of conditions and the following disclaimer.
-  * 2. Redistributions in binary form must reproduce the above copyright notice,
-  * this list of conditions and the following disclaimer in the documentation
-  * and/or other materials provided with the distribution.
-  * 3. Neither the name of STMicroelectronics nor the names of its contributors
-  * may be used to endorse or promote products derived from this software
-  * without specific prior written permission.
-  *
-  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
-  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
-  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
-  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
-  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-  *
-  ******************************************************************************
-*/
-
-/* Includes ------------------------------------------------------------------*/
-
-#include "usb_device.h"
-#include "usbd_core.h"
-#include "usbd_desc.h"
-#include "usbd_cdc.h"
-#include "usbd_cdc_if.h"
-
-/* USB Device Core handle declaration */
-USBD_HandleTypeDef hUsbDeviceFS;
-
-/* init function */				        
-void MX_USB_DEVICE_Init(void)
-{
-  /* Init Device Library,Add Supported Class and Start the library*/
-  USBD_Init(&hUsbDeviceFS, &FS_Desc, DEVICE_FS);
-
-  USBD_RegisterClass(&hUsbDeviceFS, &USBD_CDC);
-
-  USBD_CDC_RegisterInterface(&hUsbDeviceFS, &USBD_Interface_fops_FS);
-
-  USBD_Start(&hUsbDeviceFS);
-
-}
-/**
-  * @}
-  */
-
-/**
-  * @}
-  */
-
-/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/