stm32L151系列 USB驱动修改内容

冯必兴

修改的内容1：


#include "hw_config.h"
#include "delay.h"
#include "usb_lib.h"
#include "sys.h"
#include "usb_desc.h"
#include "usb_pwr.h"
#include "usb_endp.h"

//USB唤醒中断服务函数
void USBWakeUp_IRQHandler(void)
{
    EXTI_ClearITPendingBit(EXTI_Line18);//清除USB唤醒中断挂起位
}

//USB中断处理函数
void USB_LP_IRQHandler(void)
{
    USB_Istr();
}
//LED初始化配置
void USB_GpioInit(void)
{

    GPIO_InitTypeDef  GPIO_InitStructure;
    RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);        //使能GPIOB时钟
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_USB, ENABLE);
//                GPIO_PinAFConfig(GPIOA, GPIO_PinSource11, GPIO_AF_USB);
    GPIO_PinAFConfig(GPIOA, GPIO_PinSource12, GPIO_AF_USB);
//    //GPIOB6,B7初始化设置
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_OUT;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_40MHz;
    GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
    GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_DOWN;
    GPIO_Init(GPIOA, &GPIO_InitStructure);//初始化
    delay_ms(50);
    GPIO_InitStructure.GPIO_Pin = GPIO_Pin_12;
    GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IN;
    GPIO_InitStructure.GPIO_Speed = GPIO_Speed_40MHz;
    GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;
    GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_DOWN;
    GPIO_Init(GPIOA, &GPIO_InitStructure);//初始化

}

//设置USB 连接/断线
//enable:0,断开
//1,允许连接
void UsbSetPort(u8 enable)
{
    RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);   //使能PORTA时钟

    if(enable)_SetCNTR(_GetCNTR() & (~(1 << 1)));        //退出断电模式 cntr第二位表示断电设置
    else
    {
        _SetCNTR(_GetCNTR() | (1 << 1)); // 断电模式
        GPIOA->MODER &= 0XFFF00FFF;  //设置为输出
        GPIOA->MODER |= 0X00033000;
        PAout(12) = 0;                                          //D+持续输出0
    }
}


//USB中断配置
void UsbInterruptsConfig(void)
{

    NVIC_InitTypeDef NVIC_InitStructure;
    EXTI_InitTypeDef EXTI_InitStructure;

    /* Configure the EXTI line 18 connected internally to the USB IP 外部中断连接EXTI18*/
    EXTI_ClearITPendingBit(EXTI_Line18);
    //  开启线18上的中断
    EXTI_InitStructure.EXTI_Line = EXTI_Line18; // USB resume from suspend mode
    EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;        //line 18上事件上升降沿触发
    EXTI_InitStructure.EXTI_LineCmd = ENABLE;
    EXTI_Init(&EXTI_InitStructure);


    NVIC_PriorityGroupConfig(NVIC_PriorityGroup_1);
//    /* Enable the USB interrupt 低级USB中断 控制传输,中断传输与批量传输*/
    NVIC_InitStructure.NVIC_IRQChannel = USB_LP_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
    NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
    NVIC_Init(&NVIC_InitStructure);

    /* Enable the USB Wake-up interrupt */
    NVIC_InitStructure.NVIC_IRQChannel = USB_FS_WKUP_IRQn;
    NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
    NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
}

/*********************************************************************
* 函   数  名: SetUsbClock
* 函数入参: void
* 函数出参: 无
* 返   回  值: void
* 功能描述:  配置USB时钟,USBclk=48Mhz
**********************************************************************/
void SetUsbClock(void)
{
//    RCC_USBCLKConfig(RCC_USBCLKSource_PLLCLK_1Div5);        //USBclk=PLLclk/1.5=48Mhz
    RCC_APB1PeriphClockCmd(RCC_APB1Periph_USB, ENABLE);         //USB时钟使能

}

/*********************************************************************
* 函   数  名: USB_Set_Init
* 函数入参: void
* 函数出参: 无
* 返   回  值: void
* 功能描述:  USB设置初始化
**********************************************************************/
void USB_Set_Init(void)
{
    //USB引脚出视化
    USB_GpioInit();
          delay_ms(200);
    //配置USB时钟
    SetUsbClock();

    //USB中断配置
    UsbInterruptsConfig();

    //延时100毫秒


    //USB初始化
    USB_Init();




}
void USB_Set_Init_222(void)
{
    USB_GpioInit();
    delay_ms(50);
//        //USB初始化
//        USB_Init();
    //USB引脚出视化
//    UsbSetPort(0);
    //延时100毫秒
    delay_ms(150);
    //USB初始化
    USB_Init();

    //允许连接
//    UsbSetPort(1);

}
/*******************************************************************************
* Function Name  : Get_SerialNum.获得设备唯一序列号,获取描述符
* Description    : Create the serial number string descriptor.
* Input          : None.
* Output         : None.
* Return         : None.
*******************************************************************************/
void Get_SerialNum(void)
{
    u32 Device_Serial0, Device_Serial1, Device_Serial2;
    Device_Serial0 = *(vu32*)(0x1FF80050);
    Device_Serial1 = *(vu32*)(0x1FF80054);
    Device_Serial2 = *(vu32*)(0x1FF80064);
    if(Device_Serial0 != 0)
    {
        DinkUsbStringSerialUniqueId[2] = (u8)(Device_Serial0 & 0x000000FF);
        DinkUsbStringSerialUniqueId[4] = (u8)((Device_Serial0 & 0x0000FF00) >> 8);
        DinkUsbStringSerialUniqueId[6] = (u8)((Device_Serial0 & 0x00FF0000) >> 16);
        DinkUsbStringSerialUniqueId[8] = (u8)((Device_Serial0 & 0xFF000000) >> 24);
        DinkUsbStringSerialUniqueId[10] = (u8)(Device_Serial1 & 0x000000FF);
        DinkUsbStringSerialUniqueId[12] = (u8)((Device_Serial1 & 0x0000FF00) >> 8);
        DinkUsbStringSerialUniqueId[14] = (u8)((Device_Serial1 & 0x00FF0000) >> 16);
        DinkUsbStringSerialUniqueId[16] = (u8)((Device_Serial1 & 0xFF000000) >> 24);

        DinkUsbStringSerialUniqueId[18] = (u8)(Device_Serial2 & 0x000000FF);
        DinkUsbStringSerialUniqueId[20] = (u8)((Device_Serial2 & 0x0000FF00) >> 8);
        DinkUsbStringSerialUniqueId[22] = (u8)((Device_Serial2 & 0x00FF0000) >> 16);
        DinkUsbStringSerialUniqueId[24] = (u8)((Device_Serial2 & 0xFF000000) >> 24);
    }
}

/*******************************************************************************
* Function Name  : USB_Cable_Config表示USB开始连接的标志,空函数,可以在这里面添加
* Description    : Software Connection/Disconnection of USB Cable.
* Input          : None.
* Return         : Status
*******************************************************************************/
void USB_Cable_Config(FunctionalState NewState)
{
    if(NewState != DISABLE)
    {
        //add something to do
    }
    else
    {
        //add something to do
    }
}

void Enter_LowPowerMode(void)
{
    bDeviceState = SUSPENDED;
}


void Leave_LowPowerMode(void)
{
    DEVICE_INFO* pInfo = &Device_Info;


    if(pInfo->Current_Configuration != 0)
    {
        bDeviceState = CONFIGURED;
    }
    else
    {
        bDeviceState = ATTACHED;
    }
}

944278386

USB虚拟串口IAP有没有