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/*-----------------------------------------------------------------------*/
/* Low level disk I/O module skeleton for FatFs (C)ChaN, 2007 */
/*-----------------------------------------------------------------------*/
/* This is a stub disk I/O module that acts as front end of the existing */
/* disk I/O modules and attach it to FatFs module with common interface. */
/*-----------------------------------------------------------------------*/
#include "hal.h"
#include "ffconf.h"
#include "diskio.h"
#if HAL_USE_MMC_SPI && HAL_USE_SDC
#error "cannot specify both MMC_SPI and SDC drivers"
#endif
#if !defined(FATFS_HAL_DEVICE)
#if HAL_USE_MMC_SPI
#define FATFS_HAL_DEVICE MMCD1
#else
#define FATFS_HAL_DEVICE SDCD1
#endif
#endif
#if HAL_USE_MMC_SPI
extern MMCDriver FATFS_HAL_DEVICE;
#elif HAL_USE_SDC
extern SDCDriver FATFS_HAL_DEVICE;
#else
#error "MMC_SPI or SDC driver must be specified"
#endif
#if HAL_USE_RTC
extern RTCDriver RTCD1;
#endif
/*-----------------------------------------------------------------------*/
/* Correspondence between physical drive number and physical drive. */
#define MMC 0
#define SDC 0
/*-----------------------------------------------------------------------*/
/* Inidialize a Drive */
DSTATUS disk_initialize (
BYTE pdrv /* Physical drive number (0..) */
)
{
DSTATUS stat;
switch (pdrv) {
#if HAL_USE_MMC_SPI
case MMC:
stat = 0;
/* It is initialized externally, just reads the status.*/
if (blkGetDriverState(&FATFS_HAL_DEVICE) != BLK_READY)
stat |= STA_NOINIT;
if (mmcIsWriteProtected(&FATFS_HAL_DEVICE))
stat |= STA_PROTECT;
return stat;
#else
case SDC:
stat = 0;
/* It is initialized externally, just reads the status.*/
if (blkGetDriverState(&FATFS_HAL_DEVICE) != BLK_READY)
stat |= STA_NOINIT;
if (sdcIsWriteProtected(&FATFS_HAL_DEVICE))
stat |= STA_PROTECT;
return stat;
#endif
}
return STA_NOINIT;
}
/*-----------------------------------------------------------------------*/
/* Return Disk Status */
DSTATUS disk_status (
BYTE pdrv /* Physical drive number (0..) */
)
{
DSTATUS stat;
switch (pdrv) {
#if HAL_USE_MMC_SPI
case MMC:
stat = 0;
/* It is initialized externally, just reads the status.*/
if (blkGetDriverState(&FATFS_HAL_DEVICE) != BLK_READY)
stat |= STA_NOINIT;
if (mmcIsWriteProtected(&FATFS_HAL_DEVICE))
stat |= STA_PROTECT;
return stat;
#else
case SDC:
stat = 0;
/* It is initialized externally, just reads the status.*/
if (blkGetDriverState(&FATFS_HAL_DEVICE) != BLK_READY)
stat |= STA_NOINIT;
if (sdcIsWriteProtected(&FATFS_HAL_DEVICE))
stat |= STA_PROTECT;
return stat;
#endif
}
return STA_NOINIT;
}
/*-----------------------------------------------------------------------*/
/* Read Sector(s) */
DRESULT disk_read (
BYTE pdrv, /* Physical drive number (0..) */
BYTE *buff, /* Data buffer to store read data */
DWORD sector, /* Sector address (LBA) */
UINT count /* Number of sectors to read (1..255) */
)
{
switch (pdrv) {
#if HAL_USE_MMC_SPI
case MMC:
if (blkGetDriverState(&FATFS_HAL_DEVICE) != BLK_READY)
return RES_NOTRDY;
if (mmcStartSequentialRead(&FATFS_HAL_DEVICE, sector))
return RES_ERROR;
while (count > 0) {
if (mmcSequentialRead(&FATFS_HAL_DEVICE, buff))
return RES_ERROR;
buff += MMCSD_BLOCK_SIZE;
count--;
}
if (mmcStopSequentialRead(&FATFS_HAL_DEVICE))
return RES_ERROR;
return RES_OK;
#else
case SDC:
if (blkGetDriverState(&FATFS_HAL_DEVICE) != BLK_READY)
return RES_NOTRDY;
if (sdcRead(&FATFS_HAL_DEVICE, sector, buff, count))
return RES_ERROR;
return RES_OK;
#endif
}
return RES_PARERR;
}
/*-----------------------------------------------------------------------*/
/* Write Sector(s) */
#if !FF_FS_READONLY
DRESULT disk_write (
BYTE pdrv, /* Physical drive number (0..) */
const BYTE *buff, /* Data to be written */
DWORD sector, /* Sector address (LBA) */
UINT count /* Number of sectors to write (1..255) */
)
{
switch (pdrv) {
#if HAL_USE_MMC_SPI
case MMC:
if (blkGetDriverState(&FATFS_HAL_DEVICE) != BLK_READY)
return RES_NOTRDY;
if (mmcIsWriteProtected(&FATFS_HAL_DEVICE))
return RES_WRPRT;
if (mmcStartSequentialWrite(&FATFS_HAL_DEVICE, sector))
return RES_ERROR;
while (count > 0) {
if (mmcSequentialWrite(&FATFS_HAL_DEVICE, buff))
return RES_ERROR;
buff += MMCSD_BLOCK_SIZE;
count--;
}
if (mmcStopSequentialWrite(&FATFS_HAL_DEVICE))
return RES_ERROR;
return RES_OK;
#else
case SDC:
if (blkGetDriverState(&FATFS_HAL_DEVICE) != BLK_READY)
return RES_NOTRDY;
if (sdcWrite(&FATFS_HAL_DEVICE, sector, buff, count))
return RES_ERROR;
return RES_OK;
#endif
}
return RES_PARERR;
}
#endif /* _FS_READONLY */
/*-----------------------------------------------------------------------*/
/* Miscellaneous Functions */
DRESULT disk_ioctl (
BYTE pdrv, /* Physical drive number (0..) */
BYTE cmd, /* Control code */
void *buff /* Buffer to send/receive control data */
)
{
(void)buff;
switch (pdrv) {
#if HAL_USE_MMC_SPI
case MMC:
switch (cmd) {
case CTRL_SYNC:
return RES_OK;
#if FF_MAX_SS > FF_MIN_SS
case GET_SECTOR_SIZE:
*((WORD *)buff) = MMCSD_BLOCK_SIZE;
return RES_OK;
#endif
#if FF_USE_TRIM
case CTRL_TRIM:
mmcErase(&FATFS_HAL_DEVICE, *((DWORD *)buff), *((DWORD *)buff + 1));
return RES_OK;
#endif
default:
return RES_PARERR;
}
#else
case SDC:
switch (cmd) {
case CTRL_SYNC:
return RES_OK;
case GET_SECTOR_COUNT:
*((DWORD *)buff) = mmcsdGetCardCapacity(&FATFS_HAL_DEVICE);
return RES_OK;
#if FF_MAX_SS > FF_MIN_SS
case GET_SECTOR_SIZE:
*((WORD *)buff) = MMCSD_BLOCK_SIZE;
return RES_OK;
#endif
case GET_BLOCK_SIZE:
*((DWORD *)buff) = 256; /* 512b blocks in one erase block */
return RES_OK;
#if FF_USE_TRIM
case CTRL_TRIM:
sdcErase(&FATFS_HAL_DEVICE, *((DWORD *)buff), *((DWORD *)buff + 1));
return RES_OK;
#endif
default:
return RES_PARERR;
}
#endif
}
return RES_PARERR;
}
DWORD get_fattime(void) {
#if HAL_USE_RTC
RTCDateTime timespec;
rtcGetTime(&RTCD1, ×pec);
return rtcConvertDateTimeToFAT(×pec);
#else
return ((uint32_t)0 | (1 << 16)) | (1 << 21); /* wrong but valid time */
#endif
}
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