src/main/vcpf4/usb_bsp.c

   1 /**
   2   ******************************************************************************
   3   * @file    usb_bsp.c
   4   * @author  MCD Application Team
   5   * @version V1.0.0
   6   * @date    19-September-2011
   7   * @brief   This file is responsible to offer board support package and is
   8   *          configurable by user.
   9   ******************************************************************************
  10   * @attention
  11   *
  12   * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
  13   * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
  14   * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
  15   * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
  16   * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
  17   * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
  18   *
  19   * <h2><center>&copy; COPYRIGHT 2011 STMicroelectronics</center></h2>
  20   ******************************************************************************
  21   */
  22
  23 /* Includes ------------------------------------------------------------------*/
  24 #include "usb_bsp.h"
  25 #include "usbd_conf.h"
  26 #include "stm32f4xx_conf.h"
  27 #include "../drivers/nvic.h"
  28 #include "../drivers/io.h"
  29
  30 void USB_OTG_BSP_ConfigVBUS(USB_OTG_CORE_HANDLE *pdev) {
  31     (void)pdev;
  32 }
  33
  34 void USB_OTG_BSP_DriveVBUS(USB_OTG_CORE_HANDLE *pdev,uint8_t state) {
  35     (void)pdev;
  36     (void)state;
  37 }
  38
  39
  40 /**
  41 * @brief  USB_OTG_BSP_Init
  42 *         Initilizes BSP configurations
  43 * @param  None
  44 * @retval None
  45 */
  46
  47 void USB_OTG_BSP_Init(USB_OTG_CORE_HANDLE *pdev)
  48 {
  49     (void)pdev;
  50     GPIO_InitTypeDef GPIO_InitStructure;
  51
  52
  53 #ifdef USE_USB_OTG_HS
  54     NVIC_SetPriority(OTG_HS_IRQn, NVIC_PRIO_USB);
  55     NVIC_DisableIRQ(OTG_HS_IRQn);
  56 #else
  57     NVIC_SetPriority(OTG_FS_IRQn, NVIC_PRIO_USB);
  58     NVIC_DisableIRQ(OTG_FS_IRQn);
  59 #endif
  60
  61     RCC_AHB1PeriphClockCmd( RCC_AHB1Periph_GPIOA , ENABLE);
  62
  63     /* Configure SOF VBUS ID DM DP Pins */
  64     GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11 | GPIO_Pin_12;
  65     GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
  66     GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
  67     GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
  68     GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;
  69     GPIO_Init(GPIOA, &GPIO_InitStructure);
  70
  71     GPIO_PinAFConfig(GPIOA,GPIO_PinSource11,GPIO_AF_OTG1_FS) ;
  72     GPIO_PinAFConfig(GPIOA,GPIO_PinSource12,GPIO_AF_OTG1_FS) ;
  73
  74 #ifdef VBUS_SENSING_ENABLED
  75     IOConfigGPIO(IOGetByTag(IO_TAG(VBUS_SENSING_PIN)), IOCFG_IN_FLOATING);
  76 #endif
  77
  78     RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
  79     RCC_AHB2PeriphClockCmd(RCC_AHB2Periph_OTG_FS, ENABLE) ;
  80
  81     EXTI_ClearITPendingBit(EXTI_Line0);
  82 }
  83 /**
  84 * @brief  USB_OTG_BSP_EnableInterrupt
  85 *         Enabele USB Global interrupt
  86 * @param  None
  87 * @retval None
  88 */
  89 void USB_OTG_BSP_EnableInterrupt(USB_OTG_CORE_HANDLE *pdev)
  90 {
  91     (void)pdev;
  92
  93 #ifdef USE_USB_OTG_HS
  94     NVIC_SetPriority(OTG_HS_IRQn, NVIC_PRIO_USB);
  95     NVIC_EnableIRQ(OTG_HS_IRQn);
  96 #else
  97     NVIC_SetPriority(OTG_FS_IRQn, NVIC_PRIO_USB);
  98     NVIC_EnableIRQ(OTG_FS_IRQn);
  99 #endif
 100 }
 101 /**
 102 * @brief  USB_OTG_BSP_uDelay
 103 *         This function provides delay time in micro sec
 104 * @param  usec : Value of delay required in micro sec
 105 * @retval None
 106 */
 107 #pragma GCC diagnostic push
 108 #pragma GCC diagnostic ignored "-Wunsafe-loop-optimizations"
 109 void USB_OTG_BSP_uDelay (const uint32_t usec)
 110 {
 111   uint32_t count = 0;
 112   const uint32_t utime = (120 * usec / 7);
 113   do
 114   {
 115     if ( ++count > utime )
 116     {
 117       return ;
 118     }
 119   }
 120   while (1);
 121 }
 122 #pragma GCC diagnostic pop
 123
 124 /**
 125 * @brief  USB_OTG_BSP_mDelay
 126 *          This function provides delay time in milli sec
 127 * @param  msec : Value of delay required in milli sec
 128 * @retval None
 129 */
 130 void USB_OTG_BSP_mDelay (const uint32_t msec)
 131 {
 132   USB_OTG_BSP_uDelay(msec * 1000);
 133 }
 134 /**
 135 * @}
 136 */
 137
 138 /**
 139 * @}
 140 */
 141
 142 /**
 143 * @}
 144 */
 145
 146 /******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/