fatfs文件系统移植到STM32F10x

#include 'diskio.h'
#include 'ffconf.h'
#include
#include 'MMC_SD.h'

DSTATUS disk_initialize (
 BYTE drv    
)
{
 int Status;
 switch (drv)
 {
  case 0 :
//    Status = MSD0_Init();
  
   Status = SD_Init();
  
   if(Status==0){
    return RES_OK;
   }else{
    return STA_NOINIT;
   }
  case 1 :
   return RES_OK;  
  case 2 :
   return RES_OK;  
  case 3 :
   return RES_OK;
  default:
   return STA_NOINIT;
 }
}

DSTATUS disk_status (
 BYTE drv  
)
{
 switch (drv)
 {
  case 0 :
   return RES_OK;
  case 1 :
   return RES_OK;
  case 2 :
   return RES_OK;
  default:
   return STA_NOINIT;
 }
}

DRESULT disk_read (
 BYTE drv,  
 BYTE *buff,  
 DWORD sector, 
 BYTE count  
)
{
 int Status;
 if( !count )
 {   
  return RES_PARERR; 
 }
 switch (drv)
 {
  case 0:
      if(count==1)                 
      {  
    Status =  SD_ReadSingleBlock( sector ,buff );
    if(Status == 0){
     return RES_OK;
    }else{
     return RES_ERROR;
    }   
      }                                               
      else                        
      { 
    Status = SD_ReadMultiBlock( sector , buff ,count);
    if(Status == 0){
     return RES_OK;
    }else{
     return RES_ERROR;
    }
      }                                               
  case 1:
      if(count==1)                 
      {  
    return RES_OK;   
      }                                               
      else                        
      { 
    return RES_OK;
      }

  default:
   return RES_ERROR;
 }
}

#if _READONLY == 0
DRESULT disk_write (
 BYTE drv,   
 const BYTE *buff,        
 DWORD sector,  
 BYTE count   
)
{
 int Status;
 if( !count )
 {   
  return RES_PARERR; 
 }
 switch (drv)
 {
  case 0:
      if(count==1)                 
      {  
    Status = SD_WriteSingleBlock( sector , (uint8_t *)(&buff[0]) );
    if(Status == 0){
     return RES_OK;
    }else{
     return RES_ERROR;
    }
      }                                               
      else                       
      { 
    Status = SD_WriteMultiBlock( sector , (uint8_t *)(&buff[0]) , count );
    if(Status == 0){
     return RES_OK;
    }else{
     return RES_ERROR;
    }  
      }                                               
  case 1:
      if(count==1)                 
      { 
    return RES_OK;
      }                                               
      else                       
      { 
    return RES_OK;
      }                                               
 
  default:return RES_ERROR;
 }
}
#endif

DRESULT disk_ioctl (
 BYTE drv,  
 BYTE ctrl,  
 void *buff  
)
{
 if (drv==0)
 {   
  switch (ctrl)
  {
   case CTRL_SYNC :
    return RES_OK;
     case GET_SECTOR_COUNT :
    *(DWORD*)buff = 4096;
       return RES_OK;
     case GET_SECTOR_SIZE :
    *(WORD*)buff = 512;
       return RES_OK;
     case GET_BLOCK_SIZE :
    *(WORD*)buff = 512;
       return RES_OK; 
     case CTRL_POWER :
    break;
     case CTRL_LOCK :
    break;
     case CTRL_EJECT :
    break;
        
     case MMC_GET_TYPE :
    break;
     case MMC_GET_CSD :
    break;
     case MMC_GET_CID :
    break;
   case MMC_GET_OCR :
    break;
   case MMC_GET_SDSTAT :
    break; 
  }
    }
 else{     
  return RES_PARERR; 
 }
 return RES_PARERR;
}

       
                                                                                                                                                                                                                                               
DWORD get_fattime (void)
{
  
    return 0;
}