135 lines
3.3 KiB
C
135 lines
3.3 KiB
C
#include "usb_bsp.h"
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#include "delay.h"
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//////////////////////////////////////////////////////////////////////////////////
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//本程序只供学习使用，未经作者许可，不得用于其它任何用途
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//ALIENTEK STM32开发板
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//USB-BSP 代码
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//正点原子@ALIENTEK
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//技术论坛:www.openedv.com
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//创建日期:2016/1/21
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//版本：V1.0
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//版权所有，盗版必究。
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//Copyright(C) 广州市星翼电子科技有限公司 2009-2019
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//All rights reserved
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//*******************************************************************************
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//修改信息
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//无
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//////////////////////////////////////////////////////////////////////////////////
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//USB OTG 底层IO初始化
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//pdev:USB OTG内核结构体指针
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void USB_OTG_BSP_Init(USB_OTG_CORE_HANDLE *pdev)
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{
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GPIO_InitTypeDef GPIO_InitStructure;
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RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB , ENABLE);
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RCC_AHB1PeriphClockCmd( RCC_AHB1Periph_OTG_HS, ENABLE) ;
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GPIO_PinAFConfig(GPIOB,GPIO_PinSource14,GPIO_AF_OTG2_FS) ;
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GPIO_PinAFConfig(GPIOB,GPIO_PinSource15,GPIO_AF_OTG2_FS) ;
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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_Pin = GPIO_Pin_14 | GPIO_Pin_15;
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GPIO_Init(GPIOB, &GPIO_InitStructure);
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}
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//USB OTG 中断设置,开启USB FS中断
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//pdev:USB OTG内核结构体指针
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void USB_OTG_BSP_EnableInterrupt(USB_OTG_CORE_HANDLE *pdev)
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{
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NVIC_InitTypeDef NVIC_InitStructure;
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NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
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#ifdef USE_USB_OTG_HS
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NVIC_InitStructure.NVIC_IRQChannel = OTG_HS_IRQn;
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#else
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NVIC_InitStructure.NVIC_IRQChannel = OTG_FS_IRQn;
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#endif
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NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
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NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3;
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NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
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NVIC_Init(&NVIC_InitStructure);
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#ifdef USB_OTG_HS_DEDICATED_EP1_ENABLED
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NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
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NVIC_InitStructure.NVIC_IRQChannel = OTG_HS_EP1_OUT_IRQn;
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NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
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NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2;
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NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
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NVIC_Init(&NVIC_InitStructure);
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NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
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NVIC_InitStructure.NVIC_IRQChannel = OTG_HS_EP1_IN_IRQn;
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NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
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NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
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NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
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NVIC_Init(&NVIC_InitStructure);
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#endif
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}
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//USB OTG 中断设置,开启USB FS中断
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//pdev:USB OTG内核结构体指针
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void USB_OTG_BSP_DisableInterrupt(void)
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{
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}
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//USB OTG 端口供电设置(本例程未用到)
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//pdev:USB OTG内核结构体指针
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//state:0,断电;1,上电
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void USB_OTG_BSP_DriveVBUS(USB_OTG_CORE_HANDLE *pdev, uint8_t state)
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{
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}
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//USB_OTG 端口供电IO配置(本例程未用到)
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//pdev:USB OTG内核结构体指针
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void USB_OTG_BSP_ConfigVBUS(USB_OTG_CORE_HANDLE *pdev)
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{
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}
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//USB_OTG us级延时函数
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//本例程采用SYSTEM文件夹的delay.c里面的delay_us函数实现
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//官方例程采用的是定时器2来实现的.
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//usec:要延时的us数.
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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 = (14 * usec);
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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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//USB_OTG ms级延时函数
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//本例程采用SYSTEM文件夹的delay.c里面的delay_ms函数实现
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//官方例程采用的是定时器2来实现的.
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//msec:要延时的ms数.
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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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