STM32标准外设库USB SPL篇22

Posted:   2020-09-14

Status:   Completed

Tags :   STM32 SPL

Categories :   STM32 SPL

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Next:   STM32标准外设库LCD SPL篇23

参考文档

USB库

  • 下载参考文档里的USB库
  • Libraries->STM32_USB-FS-Device_Driver里为USB核心库
  • 工程Projects\Mass_Storage为USB存储器的工程，我们的程序根据此修改

USB移植

工程设置

  • 拷贝一份SD卡的工程
  • Libraries->STM32_USB-FS-Device_Driver复制到工程目录
  • Projects\Mass_Storage里的src inc复制到工程
  • src里保留

hw_config.c,mass_mal.c,memory.c,scsi_data.c,usb_bot.c,usb_desc.c,usb_endp.c,usb_istr.c,usb_prop.c,usb_pwr.c,usb_scsi.c

  • inc里保留

hw_config.h,mass_mal.h,memory.h,platform_config.h,usb_bot.h,usb_conf.h,usb_desc.h,usb_istr.h,usb_prop.h,usb_pwr.h,usb_scsi.h

  • 添加C文件到工程，添加h文件目录到工程include目录

修改USB函数

  • 修改platform_config.h
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#ifndef __PLATFORM_CONFIG_H
#define __PLATFORM_CONFIG_H
#include "stm32f10x.h"
#include "my_SD.h"
#include "my_gpio.h"
#define         ID1          (0x1FFFF7E8)
#define         ID2          (0x1FFFF7EC)
#define         ID3          (0x1FFFF7F0)
#endif
  • 修改hw_config.c
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/* Includes ------------------------------------------------------------------*/

#include "hw_config.h"
#include "mass_mal.h"
#include "usb_desc.h"
#include "usb_pwr.h"
#include "usb_lib.h"


/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/


/* Extern variables ----------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
static void IntToUnicode (uint32_t value , uint8_t *pbuf , uint8_t len);

/* Private functions ---------------------------------------------------------*/

/*******************************************************************************
* Function Name  : Set_System
* Description    : Configures Main system clocks & power
* Input          : None.
* Return         : None.
*******************************************************************************/
void Set_System(void)
{
  GPIO_InitTypeDef  GPIO_InitStructure;  
 
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE);
  /********************************************/
  /*  Configure USB DM/DP pins                */
  /********************************************/
 
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_11 | GPIO_Pin_12;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF_PP;
  GPIO_Init(GPIOA, &GPIO_InitStructure);
  /********************************************/
  /*      Init the media interface            */
  /********************************************/
  
  /* MAL configuration */
  MAL_Config();
 
}

/*******************************************************************************
* Function Name  : Set_USBClock
* Description    : Configures USB Clock input (48MHz)
* Input          : None.
* Return         : None.
*******************************************************************************/
void Set_USBClock(void)
{
  /* Select USBCLK source */
  RCC_USBCLKConfig(RCC_USBCLKSource_PLLCLK_1Div5);
  
  /* Enable the USB clock */
  RCC_APB1PeriphClockCmd(RCC_APB1Periph_USB, ENABLE);
}

/*******************************************************************************
* Function Name  : Leave_LowPowerMode
* Description    : Restores system clocks and power while exiting suspend mode
* Input          : None.
* Return         : None.
*******************************************************************************/
void Leave_LowPowerMode(void)
{
  DEVICE_INFO *pInfo = &Device_Info;

  /* Set the device state to the correct state */
  if (pInfo->Current_Configuration != 0)
  {
    /* Device configured */
    bDeviceState = CONFIGURED;
  }
  else
  {
    bDeviceState = ATTACHED;
  }
  /*Enable SystemCoreClock*/
  SystemInit(); 
}

/*******************************************************************************
* Function Name  : USB_Interrupts_Config
* Description    : Configures the USB interrupts
* Input          : None.
* Return         : None.
*******************************************************************************/
void USB_Interrupts_Config(void)
{
  NVIC_InitTypeDef NVIC_InitStructure; 
  
  NVIC_InitStructure.NVIC_IRQChannel = USB_LP_CAN1_RX0_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
  
  NVIC_InitStructure.NVIC_IRQChannel = USB_HP_CAN1_TX_IRQn;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
  NVIC_Init(&NVIC_InitStructure);

}
/*******************************************************************************
* Function Name  : Led_RW_ON
* Description    : Turn ON the Read/Write LEDs.
* Input          : None.
* Output         : None.
* Return         : None.
*******************************************************************************/
void Led_RW_ON(void)
{
  LED2(ON);
}

/*******************************************************************************
* Function Name  : Led_RW_OFF
* Description    : Turn off the Read/Write LEDs.
* Input          : None.
* Output         : None.
* Return         : None.
*******************************************************************************/
void Led_RW_OFF(void)
{
  LED2(OFF);
}
/*******************************************************************************
* Function Name  : USB_Configured_LED
* Description    : Turn ON the Read/Write LEDs.
* Input          : None.
* Output         : None.
* Return         : None.
*******************************************************************************/
void USB_Configured_LED(void)
{
  LED1(ON);
}

/*******************************************************************************
* Function Name  : USB_NotConfigured_LED
* Description    : Turn off the Read/Write LEDs.
* Input          : None.
* Output         : None.
* Return         : None.
*******************************************************************************/
void USB_NotConfigured_LED(void)
{
  LED1(OFF);
}
/*******************************************************************************
* Function Name  : USB_Cable_Config
* Description    : Software Connection/Disconnection of USB Cable.
* Input          : None.
* Return         : Status
*******************************************************************************/
void USB_Cable_Config (FunctionalState NewState)
{

}

/*******************************************************************************
* Function Name  : Get_SerialNum.
* Description    : Create the serial number string descriptor.
* Input          : None.
* Output         : None.
* Return         : None.
*******************************************************************************/
void Get_SerialNum(void)
{
  uint32_t Device_Serial0, Device_Serial1, Device_Serial2;

  Device_Serial0 = *(uint32_t*)ID1;
  Device_Serial1 = *(uint32_t*)ID2;
  Device_Serial2 = *(uint32_t*)ID3;

  Device_Serial0 += Device_Serial2;

  if (Device_Serial0 != 0)
  {
    IntToUnicode (Device_Serial0, &MASS_StringSerial[2] , 8);
    IntToUnicode (Device_Serial1, &MASS_StringSerial[18], 4);
  }
}

/*******************************************************************************
* Function Name  : HexToChar.
* Description    : Convert Hex 32Bits value into char.
* Input          : None.
* Output         : None.
* Return         : None.
*******************************************************************************/
static void IntToUnicode (uint32_t value , uint8_t *pbuf , uint8_t len)
{
  uint8_t idx = 0;
  
  for( idx = 0 ; idx < len ; idx ++)
  {
    if( ((value >> 28)) < 0xA )
    {
      pbuf[ 2* idx] = (value >> 28) + '0';
    }
    else
    {
      pbuf[2* idx] = (value >> 28) + 'A' - 10; 
    }
    
    value = value << 4;
    
    pbuf[ 2* idx + 1] = 0;
  }
}

/*******************************************************************************
* Function Name  : MAL_Config
* Description    : MAL_layer configuration
* Input          : None.
* Return         : None.
*******************************************************************************/
void MAL_Config(void)
{
  MAL_Init(0);
}

中断添加

  • stm32f10x_it.c
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#include "stm32f10x_it.h"
#include "usb_lib.h"
#include "usb_istr.h"
void USB_LP_CAN1_RX0_IRQHandler(void)
{
  USB_Istr();
}


void USB_HP_CAN1_TX_IRQHandler(void)
{
  CTR_HP();
}

修改程序

  • 修改main.c
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#include "my_gpio.h"
#include "my_usart.h"
#include "hw_config.h"
#include "usb_lib.h"
#include "usb_pwr.h"

/**
 * @brief  板级外设初始化，所有板子上的初始化均可放在这个函数里面
 * @param  无
 * @retval 无
 */
static void BSP_Init(void)
{
    NVIC_PriorityGroupConfig( NVIC_PriorityGroup_4 );
    /* LED 初始化 */
    LED_GPIO_Config();
    /* 串口初始化	*/
    USART_Config();
}

int main(void)
{

    BSP_Init();

    /*初始化*/
    Set_System();

    /*设置USB时钟为48M*/
    Set_USBClock();

    /*配置USB中断*/
    USB_Interrupts_Config();

    /*USB初始化*/
    USB_Init();

    while (bDeviceState != CONFIGURED) //等待配置完成
    {}
    while(1);
}

调试

  • 编译之后下载到开发板
  • USB线连接到开发板USB口,可以在电脑上看到U盘