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/* ... */
#include <string.h>
#include "ff_gen_drv.h"
Includes
static volatile DSTATUS Stat = STA_NOINIT;
Private variables
DSTATUS SD_initialize(BYTE);
DSTATUS SD_status(BYTE);
DRESULT SD_read(BYTE, BYTE*, DWORD, UINT);
#if _USE_WRITE == 1
DRESULT SD_write(BYTE, const BYTE*, DWORD, UINT);
#endif
#if _USE_IOCTL == 1
DRESULT SD_ioctl(BYTE, BYTE, void*);
#endif
Diskio_drvTypeDef SD_Driver =
{
SD_initialize,
SD_status,
SD_read,
#if _USE_WRITE == 1
SD_write,
#endif
#if _USE_IOCTL == 1
SD_ioctl,
#endif
...};
Private function prototypes
/* ... */
DSTATUS SD_initialize(BYTE pdrv)
{
Stat = STA_NOINIT;
if(BSP_SD_Init() == MSD_OK)
{
Stat &= ~STA_NOINIT;
}if (BSP_SD_Init() == MSD_OK) { ... }
return Stat;
}{ ... }
/* ... */
DSTATUS SD_status(BYTE pdrv)
{
Stat = STA_NOINIT;
if(BSP_SD_GetCardState() == MSD_OK)
{
Stat &= ~STA_NOINIT;
}if (BSP_SD_GetCardState() == MSD_OK) { ... }
return Stat;
}{ ... }
/* ... */
DRESULT SD_read(BYTE pdrv, BYTE *buff, DWORD sector, UINT count)
{
DRESULT res = RES_OK;
uint32_t timeout = 100000;
__disable_irq();
if(BSP_SD_ReadBlocks((uint32_t*)buff,
(uint32_t) (sector),
count, SD_DATATIMEOUT) == MSD_OK)
{
while(BSP_SD_GetCardState()!= MSD_OK)
{
if (timeout-- == 0)
{
return RES_ERROR;
}if (timeout-- == 0) { ... }
}while (BSP_SD_GetCardState()!= MSD_OK) { ... }
res = RES_OK;
}if (BSP_SD_ReadBlocks((uint32_t*)buff, (uint32_t) (sector), count, SD_DATATIMEOUT) == MSD_OK) { ... }
__enable_irq();
return res;
}{ ... }
/* ... */
#if _USE_WRITE == 1
DRESULT SD_write(BYTE pdrv, const BYTE* buff, DWORD sector, UINT count)
{
DRESULT res = RES_OK;
uint32_t timeout = 100000;
__disable_irq();
if(BSP_SD_WriteBlocks((uint32_t*)buff,
(uint32_t)(sector),
count, SD_DATATIMEOUT) == MSD_OK)
{
while(BSP_SD_GetCardState()!= MSD_OK)
{
if (timeout-- == 0)
{
return RES_ERROR;
}if (timeout-- == 0) { ... }
}while (BSP_SD_GetCardState()!= MSD_OK) { ... }
res = RES_OK;
}if (BSP_SD_WriteBlocks((uint32_t*)buff, (uint32_t)(sector), count, SD_DATATIMEOUT) == MSD_OK) { ... }
__enable_irq();
return res;
}{ ... }
/* ... */#endif
/* ... */
#if _USE_IOCTL == 1
DRESULT SD_ioctl(BYTE pdrv, BYTE cmd, void *buff)
{
DRESULT res = RES_ERROR;
HAL_SD_CardInfoTypeDef CardInfo;
if (Stat & STA_NOINIT) return RES_NOTRDY;
switch (cmd)
{
case CTRL_SYNC :
res = RES_OK;
break;
case CTRL_SYNC :
case GET_SECTOR_COUNT :
BSP_SD_GetCardInfo(&CardInfo);
*(DWORD*)buff = CardInfo.LogBlockNbr;
res = RES_OK;
break;
case GET_SECTOR_COUNT :
case GET_SECTOR_SIZE :
BSP_SD_GetCardInfo(&CardInfo);
*(WORD*)buff = CardInfo.LogBlockSize;
res = RES_OK;
break;
case GET_SECTOR_SIZE :
case GET_BLOCK_SIZE :
BSP_SD_GetCardInfo(&CardInfo);
*(DWORD*)buff = CardInfo.LogBlockSize;
res = RES_OK;
break;
case GET_BLOCK_SIZE :
default:
res = RES_PARERR;default
}switch (cmd) { ... }
return res;
}{ ... }
/* ... */#endifPrivate functions