kopia lustrzana https://github.com/micropython/micropython
271 wiersze
7.5 KiB
C
271 wiersze
7.5 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 "stm_misc.h"
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#include "stm32f4xx_gpio.h"
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#include "stm32f4xx_rcc.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 on PA11 and PA12 */
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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 on PA9 (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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// Configure ID pin on PA10
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GPIO_InitStructure.GPIO_Pin = GPIO_Pin_10;
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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_UP ;
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GPIO_Init(GPIOA, &GPIO_InitStructure);
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GPIO_PinAFConfig(GPIOA, GPIO_PinSource10, GPIO_AF_OTG_FS);
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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 BSP_Drive_VBUS
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* Drives the Vbus signal through IO
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* @param state : VBUS states
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* @retval None
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*/
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void USB_OTG_BSP_DriveVBUS(USB_OTG_CORE_HANDLE *pdev, uint8_t state) {
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//printf("DriveVBUS %p %u\n", pdev, state);
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/*
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On-chip 5 V VBUS generation is not supported. For this reason, a charge pump
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or, if 5 V are available on the application board, a basic power switch, must
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be added externally to drive the 5 V VBUS line. The external charge pump can
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be driven by any GPIO output. When the application decides to power on VBUS
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using the chosen GPIO, it must also set the port power bit in the host port
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control and status register (PPWR bit in OTG_FS_HPRT).
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Bit 12 PPWR: Port power
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The application uses this field to control power to this port, and the core
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clears this bit on an overcurrent condition.
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*/
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#if 0 // not implemented
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#ifndef USE_USB_OTG_HS
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if (0 == state) {
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/* DISABLE is needed on output of the Power Switch */
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GPIO_SetBits(HOST_POWERSW_PORT, HOST_POWERSW_VBUS);
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} else {
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/*ENABLE the Power Switch by driving the Enable LOW */
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GPIO_ResetBits(HOST_POWERSW_PORT, HOST_POWERSW_VBUS);
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}
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#endif
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#endif
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}
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/**
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* @brief USB_OTG_BSP_ConfigVBUS
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* Configures the IO for the Vbus and OverCurrent
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* @param None
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* @retval None
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*/
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void USB_OTG_BSP_ConfigVBUS(USB_OTG_CORE_HANDLE *pdev) {
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//printf("ConfigVBUS %p\n", pdev);
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#if 0 // not implemented
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#ifdef USE_USB_OTG_FS
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GPIO_InitTypeDef GPIO_InitStructure;
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#ifdef USE_STM3210C_EVAL
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RCC_APB2PeriphClockCmd(HOST_POWERSW_PORT_RCC, ENABLE);
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/* Configure Power Switch Vbus Pin */
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GPIO_InitStructure.GPIO_Pin = HOST_POWERSW_VBUS;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
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GPIO_Init(HOST_POWERSW_PORT, &GPIO_InitStructure);
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#else
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#ifdef USE_USB_OTG_FS
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RCC_AHB1PeriphClockCmd( RCC_AHB1Periph_GPIOH , ENABLE);
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GPIO_InitStructure.GPIO_Pin = HOST_POWERSW_VBUS;
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GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
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GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
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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(HOST_POWERSW_PORT,&GPIO_InitStructure);
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#endif
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#endif
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/* By Default, DISABLE is needed on output of the Power Switch */
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GPIO_SetBits(HOST_POWERSW_PORT, HOST_POWERSW_VBUS);
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USB_OTG_BSP_mDelay(200); /* Delay is need for stabilising the Vbus Low
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in Reset Condition, when Vbus=1 and Reset-button is pressed by user */
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#endif
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#endif
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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 = (168 * 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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