/*-----------------------------------------------------------------------*/
/* Low level disk I/O module skeleton for FatFs     (C)ChaN, 2013        */
/*-----------------------------------------------------------------------*/
/* 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 module to the FatFs module with a defined API.        */
/*-----------------------------------------------------------------------*/

#include "diskio.h"     /* FatFs lower layer API */
#include "../sdmmc.h"

/* Definitions of physical drive number for each media */
#define ATA     0
#define MMC     1
#define USB     2

static DSTATUS status;

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

DSTATUS disk_initialize (
    BYTE pdrv               /* Physical drive nmuber (0..) */
)
{
    int result = sdmmc_sdcard_init();
    if (result)
    {
        status = STA_NOINIT;
    }
    status = RES_OK;
    return status;
}



/*-----------------------------------------------------------------------*/
/* Get Disk Status                                                       */
/*-----------------------------------------------------------------------*/

DSTATUS disk_status (
    BYTE pdrv       /* Physical drive nmuber (0..) */
)
{
    return status;
}



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

DRESULT disk_read (
    BYTE pdrv,      /* Physical drive nmuber (0..) */
    BYTE *buff,     /* Data buffer to store read data */
    DWORD sector,   /* Sector address (LBA) */
    UINT count      /* Number of sectors to read (1..128) */
)
{
    if (!status)
    {
        switch(pdrv){
        case 0:
            if (sdmmc_sdcard_readsectors(sector,count,(u8*)buff))
            return RES_PARERR;
            break;
        }
        return RES_OK;
    }
    return RES_NOTRDY;
}



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

#if _USE_WRITE
DRESULT disk_write (
    BYTE pdrv,          /* Physical drive nmuber (0..) */
    const BYTE *buff,   /* Data to be written */
    DWORD sector,       /* Sector address (LBA) */
    UINT count          /* Number of sectors to write (1..128) */
)
{
    if (!status)
    {
        switch(pdrv){
            case 0:
                if (sdmmc_sdcard_writesectors(sector,count,(u8*)buff))
                    return RES_PARERR;
                break;
        }
        return RES_OK;
    }
    return RES_NOTRDY;
}
#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 */
)
{
    if (!status)
        return RES_OK;
    return RES_NOTRDY;
}
#endif