STM32H750XB_RT-THREAD/26-27-LTDC—液晶显示/刷外部FLASH程序（如何恢复字库）/User/FATFS/drivers/fatfs_sd_sdio.c

/**
  ******************************************************************************
  * @file    bsp_sdio_sd.c
  * @author  fire
  * @version V1.0
  * @date    2018-xx-xx
  * @brief   SDIO sd<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ļ<EFBFBD>ϵͳ<EFBFBD><EFBFBD>
  ******************************************************************************
  * @attention
  *
  * ʵ<EFBFBD><EFBFBD>ƽ̨:<EFBFBD><EFBFBD><EFBFBD><EFBFBD>  STM32 H743 <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>  
  * <EFBFBD><EFBFBD>̳    :http://www.firebbs.cn
  * <EFBFBD>Ա<EFBFBD>    :http://firestm32.taobao.com
  *
  ******************************************************************************
  */
#include "./drivers/fatfs_sd_sdio.h"
#include <stdio.h>
#include <string.h>
#include "./sd_card/bsp_sdio_sd.h"
#include "ff_gen_drv.h"
#include "./led/bsp_led.h" 
/* Disk status */
static volatile DSTATUS Stat = STA_NOINIT;

extern SD_HandleTypeDef uSdHandle;
//<2F><><EFBFBD>ͱ<EFBFBD>־λ
extern volatile uint8_t TX_Flag;
//<2F><><EFBFBD>ܱ<EFBFBD>־λ
extern volatile uint8_t RX_Flag; 
const Diskio_drvTypeDef  SD_Driver =
{
  SD_initialize,
  SD_status,
  SD_read, 
#if  _USE_WRITE == 1
  SD_write,
#endif /* _USE_WRITE == 1 */
  
#if  _USE_IOCTL == 1
  SD_ioctl,
#endif /* _USE_IOCTL == 1 */
};
DSTATUS SD_initialize(BYTE lun)
{
    Stat = STA_NOINIT;
    if(BSP_SD_Init() == HAL_OK)
    {    
        Stat &= ~STA_NOINIT;
    }
    return Stat;
}

DSTATUS SD_status(BYTE lun){

    Stat = STA_NOINIT;
    if(HAL_SD_GetCardState(&uSdHandle) == HAL_SD_CARD_TRANSFER)
    {
        Stat &= ~STA_NOINIT;
    }
    return Stat;
}
DRESULT SD_read(BYTE lun,//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>豸ʱ<E8B1B8>õ<EFBFBD>(0...)
                BYTE *buff,//<2F><><EFBFBD>ݻ<EFBFBD><DDBB><EFBFBD><EFBFBD><EFBFBD> 
                DWORD sector, //<2F><><EFBFBD><EFBFBD><EFBFBD>׵<EFBFBD>ַ
                UINT count)//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>(1..128)
{
  DRESULT res = RES_ERROR;
  uint32_t timeout;
  uint32_t alignedAddr;

  RX_Flag = 0;
  
  alignedAddr = (uint32_t)buff & ~0x1F;
  //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӧ<EFBFBD><D3A6>DCache
  SCB_CleanDCache_by_Addr((uint32_t*)alignedAddr, count*BLOCKSIZE + ((uint32_t)buff - alignedAddr));
  if(HAL_SD_ReadBlocks_DMA(&uSdHandle, (uint8_t*)buff,
                           (uint32_t) (sector),
                           count) == HAL_OK)
  {
    /* Wait that the reading process is completed or a timeout occurs */
    timeout = HAL_GetTick();
    while((RX_Flag == 0) && ((HAL_GetTick() - timeout) < SD_TIMEOUT))
    {
    }
    /* incase of a timeout return error */
    if (RX_Flag == 0)
    {
      res = RES_ERROR;
    }
    else
    {
      RX_Flag = 0;
      timeout = HAL_GetTick();

      while((HAL_GetTick() - timeout) < SD_TIMEOUT)
      {
        if (HAL_SD_GetCardState(&uSdHandle) == HAL_SD_CARD_TRANSFER)
        {
          res = RES_OK;

          /*
             the SCB_InvalidateDCache_by_Addr() requires a 32-Byte aligned address,
             adjust the address and the D-Cache size to invalidate accordingly.
           */
          alignedAddr = (uint32_t)buff & ~0x1F;
          //ʹ<><CAB9>Ӧ<EFBFBD><D3A6>DCache<68><65>Ч
          SCB_InvalidateDCache_by_Addr((uint32_t*)alignedAddr, count*BLOCKSIZE + ((uint32_t)buff - alignedAddr));

           break;
        }
      }
    }
  }

  return res;
}
  
DRESULT SD_write(BYTE lun,//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>豸ʱ<E8B1B8>õ<EFBFBD>(0...)
                 const BYTE *buff,//<2F><><EFBFBD>ݻ<EFBFBD><DDBB><EFBFBD><EFBFBD><EFBFBD> 
                 DWORD sector, //<2F><><EFBFBD><EFBFBD><EFBFBD>׵<EFBFBD>ַ
                 UINT count)//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>(1..128)
{
    DRESULT res = RES_ERROR;
    uint32_t timeout;
    uint32_t alignedAddr;
  
    TX_Flag = 0;
    alignedAddr = (uint32_t)buff & ~0x1F;
    //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ӧ<EFBFBD><D3A6>DCache
    SCB_CleanDCache_by_Addr((uint32_t*)alignedAddr, count*BLOCKSIZE + ((uint32_t)buff - alignedAddr));
    if(HAL_SD_WriteBlocks_DMA(&uSdHandle, (uint8_t*)buff,
                             (uint32_t) (sector),
                             count) == HAL_OK)
    {
      /* Wait that the reading process is completed or a timeout occurs */
      timeout = HAL_GetTick();
      while((TX_Flag == 0) && ((HAL_GetTick() - timeout) < SD_TIMEOUT))
      {
      }
      /* incase of a timeout return error */
      if (TX_Flag == 0)
      {
        res = RES_ERROR;
      }
      else
      {
        TX_Flag = 0;
        timeout = HAL_GetTick();

        while((HAL_GetTick() - timeout) < SD_TIMEOUT)
        {
          if (HAL_SD_GetCardState(&uSdHandle) == HAL_SD_CARD_TRANSFER)
          {
            res = RES_OK;
            //ʹ<><CAB9>Ӧ<EFBFBD><D3A6>DCache<68><65>Ч
            SCB_InvalidateDCache_by_Addr((uint32_t*)alignedAddr, count*BLOCKSIZE + ((uint32_t)buff - alignedAddr));

             break;
          }
        }
      }
    }
    return res;
}
DRESULT SD_ioctl(BYTE lun,BYTE cmd, void *buff){
    DRESULT res = RES_ERROR;
    HAL_SD_CardInfoTypeDef CardInfo;

    if (Stat & STA_NOINIT) return RES_NOTRDY;

    switch (cmd)
    {
    /* Make sure that no pending write process */
    case CTRL_SYNC :
      res = RES_OK;
      break;

    /* Get number of sectors on the disk (DWORD) */
    case GET_SECTOR_COUNT :
      HAL_SD_GetCardInfo(&uSdHandle, &CardInfo);
      *(DWORD*)buff = CardInfo.LogBlockNbr;
      res = RES_OK;
      break;

    /* Get R/W sector size (WORD) */
    case GET_SECTOR_SIZE :
      HAL_SD_GetCardInfo(&uSdHandle, &CardInfo);
      *(WORD*)buff = CardInfo.LogBlockSize;
      res = RES_OK;
      break;

    /* Get erase block size in unit of sector (DWORD) */
    case GET_BLOCK_SIZE :
      HAL_SD_GetCardInfo(&uSdHandle, &CardInfo);
      *(DWORD*)buff = CardInfo.LogBlockSize / BLOCK_SIZE;
      res = RES_OK;
      break;

    default:
      res = RES_PARERR;
    }
    return RES_OK;
}
/*****************************END OF FILE****************************/