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diff --git a/libmaple/usb/usb_lib/usb_init.c b/libmaple/usb/usb_lib/usb_init.c
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index 0000000..94f3a83
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+++ b/libmaple/usb/usb_lib/usb_init.c
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+/******************** (C) COPYRIGHT 2008 STMicroelectronics ********************
+* File Name          : usb_init.c
+* Author             : MCD Application Team
+* Version            : V2.2.1
+* Date               : 09/22/2008
+* Description        : Initialization routines & global variables
+********************************************************************************
+* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
+* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.
+* AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT,
+* INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE
+* CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING
+* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
+*******************************************************************************/
+
+/* Includes ------------------------------------------------------------------*/
+#include "usb_lib.h"
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/* Private macro -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/*  The number of current endpoint, it will be used to specify an endpoint */
+ u8	EPindex;
+/*  The number of current device, it is an index to the Device_Table */
+/* u8	Device_no; */
+/*  Points to the DEVICE_INFO structure of current device */
+/*  The purpose of this register is to speed up the execution */
+DEVICE_INFO *pInformation;
+/*  Points to the DEVICE_PROP structure of current device */
+/*  The purpose of this register is to speed up the execution */
+DEVICE_PROP *pProperty;
+/*  Temporary save the state of Rx & Tx status. */
+/*  Whenever the Rx or Tx state is changed, its value is saved */
+/*  in this variable first and will be set to the EPRB or EPRA */
+/*  at the end of interrupt process */
+u16	SaveState ;
+u16  wInterrupt_Mask;
+DEVICE_INFO	Device_Info;
+USER_STANDARD_REQUESTS  *pUser_Standard_Requests;
+
+/* Extern variables ----------------------------------------------------------*/
+/* Private function prototypes -----------------------------------------------*/
+/* Private functions ---------------------------------------------------------*/
+
+/*******************************************************************************
+* Function Name  : USB_Init
+* Description    : USB system initialization
+* Input          : None.
+* Output         : None.
+* Return         : None.
+*******************************************************************************/
+void USB_Init(void)
+{
+  pInformation = &Device_Info;
+  pInformation->ControlState = 2;
+  pProperty = &Device_Property;
+  pUser_Standard_Requests = &User_Standard_Requests;
+  /* Initialize devices one by one */
+  
+  pProperty->Init();
+}
+
+/******************* (C) COPYRIGHT 2008 STMicroelectronics *****END OF FILE****/