184 lines
4.4 KiB
C
184 lines
4.4 KiB
C
/**
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******************************************************************************
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* @file usb_bsp.c
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* @author MCD Application Team
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* @version V1.1.0
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* @date 19-March-2012
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* @brief This file is responsible to offer board support package and is
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* configurable by user.
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******************************************************************************
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* @attention
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*
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* <h2><center>© COPYRIGHT 2012 STMicroelectronics</center></h2>
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*
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* Licensed under MCD-ST Liberty SW License Agreement V2, (the "License");
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* You may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.st.com/software_license_agreement_liberty_v2
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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******************************************************************************
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "stm32f4xx_gpio.h"
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#include "stm32f4xx_rcc.h"
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#include "stm_misc.h"
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#include "usb_bsp.h"
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/** @addtogroup STM32_USB_OTG_DEVICE_LIBRARY
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* @{
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*/
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/** @defgroup USB_BSP
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* @brief This file is responsible to offer board support package
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* @{
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*/
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/** @defgroup USB_BSP_Private_Defines
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* @{
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*/
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/**
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* @}
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*/
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/** @defgroup USB_BSP_Private_TypesDefinitions
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* @{
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*/
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/**
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* @}
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*/
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/** @defgroup USB_BSP_Private_Macros
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* @{
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*/
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/**
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* @}
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*/
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/** @defgroup USBH_BSP_Private_Variables
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* @{
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*/
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/**
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* @}
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*/
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/** @defgroup USBH_BSP_Private_FunctionPrototypes
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* @{
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*/
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/**
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* @}
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*/
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/** @defgroup USB_BSP_Private_Functions
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* @{
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*/
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/**
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* @brief USB_OTG_BSP_Init
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* Initilizes BSP configurations
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* @param None
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* @retval None
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*/
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void USB_OTG_BSP_Init(USB_OTG_CORE_HANDLE *pdev) {
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RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);
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/* Configure DM DP Pins */
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GPIO_InitTypeDef GPIO_InitStructure;
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11 | GPIO_Pin_12;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
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GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
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GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;
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GPIO_Init(GPIOA, &GPIO_InitStructure);
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GPIO_PinAFConfig(GPIOA, GPIO_PinSource11, GPIO_AF_OTG_FS);
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GPIO_PinAFConfig(GPIOA, GPIO_PinSource12, GPIO_AF_OTG_FS);
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/* Configure VBUS Pin (or disable VBUS_SENSING_ENABLED) */
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_9;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
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GPIO_InitStructure.GPIO_OType = GPIO_OType_OD;
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GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL ;
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GPIO_Init(GPIOA, &GPIO_InitStructure);
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RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
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RCC_AHB2PeriphClockCmd(RCC_AHB2Periph_OTG_FS, ENABLE);
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}
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/**
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* @brief USB_OTG_BSP_EnableInterrupt
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* Enable USB Global interrupt
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* @param None
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* @retval None
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*/
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void USB_OTG_BSP_EnableInterrupt(USB_OTG_CORE_HANDLE *pdev) {
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// this assumes we use NVIC_PriorityGroup_4
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NVIC_InitTypeDef NVIC_InitStructure;
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NVIC_InitStructure.NVIC_IRQChannel = OTG_FS_IRQn;
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NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 8;
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NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
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NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
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NVIC_Init(&NVIC_InitStructure);
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}
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/**
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* @brief USB_OTG_BSP_uDelay
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* This function provides delay time in micro sec
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* @param usec : Value of delay required in micro sec
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* @retval None
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*/
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void USB_OTG_BSP_uDelay (const uint32_t usec)
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{
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uint32_t count = 0;
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const uint32_t utime = (160 * usec / 5);
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do
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{
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if ( ++count > utime )
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{
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return ;
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}
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}
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while (1);
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}
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/**
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* @brief USB_OTG_BSP_mDelay
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* This function provides delay time in milli sec
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* @param msec : Value of delay required in milli sec
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* @retval None
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*/
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void USB_OTG_BSP_mDelay (const uint32_t msec)
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{
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USB_OTG_BSP_uDelay(msec * 1000);
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}
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/**
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* @}
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*/
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/**
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* @}
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*/
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/**
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* @}
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*/
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/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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