#include "usb_bsp.h"
#include "delay.h" 

//////////////////////////////////////////////////////////////////////////////////	 
//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
//ALIENTEK STM32开发板
//USB-BSP 代码	   
//正点原子@ALIENTEK
//技术论坛:www.openedv.com
//创建日期:2016/1/21
//版本：V1.0
//版权所有，盗版必究。
//Copyright(C) 广州市星翼电子科技有限公司 2009-2019
//All rights reserved									  
//*******************************************************************************
//修改信息
//无
////////////////////////////////////////////////////////////////////////////////// 	   
 
  
//USB OTG 底层IO初始化
//pdev:USB OTG内核结构体指针
void USB_OTG_BSP_Init(USB_OTG_CORE_HANDLE *pdev)
{
	GPIO_InitTypeDef GPIO_InitStructure;   

	RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOB , ENABLE);
	RCC_AHB1PeriphClockCmd( RCC_AHB1Periph_OTG_HS, ENABLE) ;   	
	
	GPIO_PinAFConfig(GPIOB,GPIO_PinSource14,GPIO_AF_OTG2_FS) ; 
	GPIO_PinAFConfig(GPIOB,GPIO_PinSource15,GPIO_AF_OTG2_FS) ;	
	
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_100MHz;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_14 |  GPIO_Pin_15;	
	GPIO_Init(GPIOB, &GPIO_InitStructure);  
}

//USB OTG 中断设置,开启USB FS中断
//pdev:USB OTG内核结构体指针
void USB_OTG_BSP_EnableInterrupt(USB_OTG_CORE_HANDLE *pdev)
{  	
  NVIC_InitTypeDef NVIC_InitStructure; 
  
  NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
#ifdef USE_USB_OTG_HS   
  NVIC_InitStructure.NVIC_IRQChannel = OTG_HS_IRQn;
#else
  NVIC_InitStructure.NVIC_IRQChannel = OTG_FS_IRQn;  
#endif
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 3;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);  
#ifdef USB_OTG_HS_DEDICATED_EP1_ENABLED
  NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
  NVIC_InitStructure.NVIC_IRQChannel = OTG_HS_EP1_OUT_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);  
  
  NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
  NVIC_InitStructure.NVIC_IRQChannel = OTG_HS_EP1_IN_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);   
#endif
}

//USB OTG 中断设置,开启USB FS中断
//pdev:USB OTG内核结构体指针
void USB_OTG_BSP_DisableInterrupt(void)
{ 
}
//USB OTG 端口供电设置(本例程未用到)
//pdev:USB OTG内核结构体指针
//state:0,断电;1,上电
void USB_OTG_BSP_DriveVBUS(USB_OTG_CORE_HANDLE *pdev, uint8_t state)
{ 
}
//USB_OTG 端口供电IO配置(本例程未用到)
//pdev:USB OTG内核结构体指针
void  USB_OTG_BSP_ConfigVBUS(USB_OTG_CORE_HANDLE *pdev)
{ 
} 
//USB_OTG us级延时函数
//本例程采用SYSTEM文件夹的delay.c里面的delay_us函数实现
//官方例程采用的是定时器2来实现的.
//usec:要延时的us数.
void USB_OTG_BSP_uDelay (const uint32_t usec)
{ 
  uint32_t count = 0;
  const uint32_t utime = (14 * usec);
  do
  {
    if ( ++count > utime )
    {
      return ;
    }
  }
  while (1);
}
//USB_OTG ms级延时函数
//本例程采用SYSTEM文件夹的delay.c里面的delay_ms函数实现
//官方例程采用的是定时器2来实现的.
//msec:要延时的ms数.
void USB_OTG_BSP_mDelay (const uint32_t msec)
{  
  USB_OTG_BSP_uDelay(msec * 1000);   
}