DSTATUS disk_status (
BYTE drv /* Physical drive nmuber (0..) */
)
{
DSTATUS stat;
switch (drv) {
#if HAL_USE_MMC_SPI
case MMC:
stat = 0;
/* It is initialized externally, just reads the status.*/
if (mmcGetDriverState(&MMCD1) != MMC_READY)
stat |= STA_NOINIT;
if (mmcIsWriteProtected(&MMCD1))
stat |= STA_PROTECT;
return stat;
#else
case SDC:
stat = 0;
/* It is initialized externally, just reads the status.*/
if (sdcGetDriverState(&SDCD1) != SDC_ACTIVE)
stat |= STA_NOINIT;
if (sdcIsWriteProtected(&SDCD1))
stat |= STA_PROTECT;
return stat;
#endif
}
return STA_NODISK;
}
/*
* SD card removal event.
*/
static void RemoveHandler(eventid_t id) {
(void)id;
if (sdcGetDriverState(&SDCD1) == SDC_ACTIVE)
sdcDisconnect(&SDCD1);
fs_ready = FALSE;
}
DRESULT disk_read (
BYTE drv, /* Physical drive nmuber (0..) */
BYTE *buff, /* Data buffer to store read data */
DWORD sector, /* Sector address (LBA) */
BYTE count /* Number of sectors to read (1..255) */
)
{
switch (drv) {
#if HAL_USE_MMC_SPI
case MMC:
if (mmcGetDriverState(&MMCD1) != MMC_READY)
return RES_NOTRDY;
if (mmcStartSequentialRead(&MMCD1, sector))
return RES_ERROR;
while (count > 0) {
if (mmcSequentialRead(&MMCD1, buff))
return RES_ERROR;
buff += MMC_SECTOR_SIZE;
count--;
}
if (mmcStopSequentialRead(&MMCD1))
return RES_ERROR;
return RES_OK;
#else
case SDC:
if (sdcGetDriverState(&SDCD1) != SDC_ACTIVE)
return RES_NOTRDY;
if (sdcRead(&SDCD1, sector, buff, count))
return RES_ERROR;
return RES_OK;
#endif
}
return RES_PARERR;
}
