diskio.c

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/*-----------------------------------------------------------------------*/
/* Low level disk I/O module glue functions         (C)ChaN, 2016        */
/*-----------------------------------------------------------------------*/
/* If a working storage control module is available, it should be        */
/* attached to the FatFs via a glue function rather than modifying it.   */
/* This is an example of glue functions to attach various exsisting      */
/* storage control modules to the FatFs module with a defined API.       */
/*-----------------------------------------------------------------------*/

#define DRV_MMC 0

/* mmc.c */
#include "user_config.h"
#include "fatfs.h"
//#include "mmc_hal.h"


#include "diskio.h"     /* FatFs lower layer API */
#ifdef DRV_CFC
#include "cfc.h"        /* Header file of existing CF control module */
#endif
#ifdef DRV_MMC
#include "mmc.h"        /* Header file of existing SD control module */
#endif


/*-----------------------------------------------------------------------*/
/* Get Drive Status                                                      */
/*-----------------------------------------------------------------------*/

DSTATUS disk_status (
    BYTE pdrv       /* Physical drive nmuber to identify the drive */
)
{
    switch (pdrv) {
#ifdef DRV_CFC
    case DRV_CFC :
        return cf_disk_status();
#endif
#ifdef DRV_MMC
    case DRV_MMC :
        return mmc_disk_status();
#endif
    }
    return STA_NOINIT;
}



/*-----------------------------------------------------------------------*/
/* Inidialize a Drive                                                    */
/*-----------------------------------------------------------------------*/

DSTATUS disk_initialize (
    BYTE pdrv               /* Physical drive nmuber to identify the drive */
)
{
    switch (pdrv) {
#ifdef DRV_CFC
    case DRV_CFC :
        return cf_disk_initialize();
#endif
#ifdef DRV_MMC
    case DRV_MMC :
        return mmc_disk_initialize();
#endif
    }
    return STA_NOINIT;
}



/*-----------------------------------------------------------------------*/
/* Read Sector(s)                                                        */
/*-----------------------------------------------------------------------*/

DRESULT disk_read (
    BYTE pdrv,      /* Physical drive nmuber to identify the drive */
    BYTE *buff,     /* Data buffer to store read data */
    DWORD sector,   /* Sector address in LBA */
    UINT count      /* Number of sectors to read */
)
{
    switch (pdrv) {
#ifdef DRV_CFC
    case DRV_CFC :
        return cf_disk_read(buff, sector, count);
#endif
#ifdef DRV_MMC
    case DRV_MMC :
        return mmc_disk_read(buff, sector, count);
#endif
    }
    return RES_PARERR;
}



/*-----------------------------------------------------------------------*/
/* Write Sector(s)                                                       */
/*-----------------------------------------------------------------------*/

#if _USE_WRITE
DRESULT disk_write (
    BYTE pdrv,          /* Physical drive nmuber to identify the drive */
    const BYTE *buff,   /* Data to be written */
    DWORD sector,       /* Sector address in LBA */
    UINT count          /* Number of sectors to write */
)
{
    switch (pdrv) {
#ifdef DRV_CFC
    case DRV_CFC :
        return cf_disk_write(buff, sector, count);
#endif
#ifdef DRV_MMC
    case DRV_MMC :
        return mmc_disk_write(buff, sector, count);
#endif
    }
    return RES_PARERR;
}
#endif


/*-----------------------------------------------------------------------*/
/* Miscellaneous Functions                                               */
/*-----------------------------------------------------------------------*/

#if _USE_IOCTL
DRESULT disk_ioctl (
    BYTE pdrv,      /* Physical drive nmuber (0..) */
    BYTE cmd,       /* Control code */
    void *buff      /* Buffer to send/receive control data */
)
{
    switch (pdrv) {
#ifdef DRV_CFC
    case DRV_CFC :
        return cf_disk_ioctl(cmd, buff);
#endif
#ifdef DRV_MMC
    case DRV_MMC :
        return mmc_disk_ioctl(cmd, buff);
#endif
    }
    return RES_PARERR;
}
#endif


/*-----------------------------------------------------------------------*/
/* Timer driven procedure                                                */
/*-----------------------------------------------------------------------*/


void disk_timerproc (void)
{
#ifdef DRV_CFC
    cf_disk_timerproc();
#endif
#ifdef DRV_MMC
    mmc_disk_timerproc();
#endif
}