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