source: UsbWattMeter/trunk/fatfs/diskio.h

/*-----------------------------------------------------------------------
/  Low level disk interface modlue include file   (C)ChaN, 2014
/-----------------------------------------------------------------------*/

#ifndef _DISKIO_DEFINED
#define _DISKIO_DEFINED

#ifdef __cplusplus
extern "C" {
#endif

#define _USE_WRITE      1       /* 1: Enable disk_write function */
#define _USE_IOCTL      1       /* 1: Enable disk_ioctl fucntion */

#include "integer.h"


/* Status of Disk Functions */
typedef BYTE    DSTATUS;

/* Results of Disk Functions */
typedef enum {
        RES_OK = 0,             /* 0: Successful */
        RES_ERROR,              /* 1: R/W Error */
        RES_WRPRT,              /* 2: Write Protected */
        RES_NOTRDY,             /* 3: Not Ready */
        RES_PARERR              /* 4: Invalid Parameter */
} DRESULT;


/*---------------------------------------*/
/* Prototypes for disk control functions */


DSTATUS disk_initialize (BYTE pdrv);
DSTATUS disk_status (BYTE pdrv);
DRESULT disk_read (BYTE pdrv, BYTE* buff, DWORD sector, UINT count);
#if     _USE_WRITE
DRESULT disk_write (BYTE pdrv, const BYTE* buff, DWORD sector, UINT count);
#endif
#if     _USE_IOCTL
DRESULT disk_ioctl (BYTE pdrv, BYTE cmd, void* buff);
#endif


/* Disk Status Bits (DSTATUS) */
#define STA_NOINIT              0x01    /* Drive not initialized */
#define STA_NODISK              0x02    /* No medium in the drive */
#define STA_PROTECT             0x04    /* Write protected */


/* Command code for disk_ioctrl fucntion */

/* Generic command (Used by FatFs) */
#define CTRL_SYNC                       0       /* Complete pending write process (needed at _FS_READONLY == 0) */
#define GET_SECTOR_COUNT        1       /* Get media size (needed at _USE_MKFS == 1) */
#define GET_SECTOR_SIZE         2       /* Get sector size (needed at _MAX_SS != _MIN_SS) */
#define GET_BLOCK_SIZE          3       /* Get erase block size (needed at _USE_MKFS == 1) */
#define CTRL_TRIM                       4       /* Inform device that the data on the block of sectors is no longer used (needed at _USE_TRIM == 1) */

/* Generic command (Not used by FatFs) */
#define CTRL_FORMAT                     5       /* Create physical format on the media */
#define CTRL_POWER_IDLE         6       /* Put the device idle state */
#define CTRL_POWER_OFF          7       /* Put the device off state */
#define CTRL_LOCK                       8       /* Lock media removal */
#define CTRL_UNLOCK                     9       /* Unlock media removal */
#define CTRL_EJECT                      10      /* Eject media */

/* MMC/SDC specific command (Not used by FatFs) */
#define MMC_GET_TYPE            50      /* Get card type */
#define MMC_GET_CSD                     51      /* Get CSD */
#define MMC_GET_CID                     52      /* Get CID */
#define MMC_GET_OCR                     53      /* Get OCR */
#define MMC_GET_SDSTAT          54      /* Get SD status */

/* ATA/CF specific command (Not used by FatFs) */
#define ATA_GET_REV                     60      /* Get F/W revision */
#define ATA_GET_MODEL           61      /* Get model name */
#define ATA_GET_SN                      62      /* Get serial number */


/* MMC card type flags (MMC_GET_TYPE) */
#define CT_MMC          0x01            /* MMC ver 3 */
#define CT_SD1          0x02            /* SD ver 1 */
#define CT_SD2          0x04            /* SD ver 2 */
#define CT_SDC          (CT_SD1|CT_SD2) /* SD */
#define CT_BLOCK        0x08            /* Block addressing */


#ifdef __cplusplus
}
#endif

#endif