diskio.h

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

#ifndef _DISKIO_DEFINED
#define _DISKIO_DEFINED

#ifdef __cplusplus
extern "C" {
#endif

#include <utils/types.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;

typedef enum {
	DRIVE_SD   = 0,
	DRIVE_RAM  = 1,
	DRIVE_EMMC = 2,
	DRIVE_BIS  = 3,
	DRIVE_EMU  = 4
} DDRIVE;


/*---------------------------------------*/
/* 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);
DRESULT disk_write (BYTE pdrv, const BYTE* buff, DWORD sector, UINT count);
DRESULT disk_ioctl (BYTE pdrv, BYTE cmd, void* buff);
DRESULT disk_set_info (BYTE pdrv, BYTE cmd, void *buff);


/* 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 FF_FS_READONLY == 0) */
#define GET_SECTOR_COUNT	1	/* Get media size (needed at FF_USE_MKFS == 1) */
#define SET_SECTOR_COUNT	1	/* Set media size (needed at FF_USE_MKFS == 1) */
#define GET_SECTOR_SIZE		2	/* Get sector size (needed at FF_MAX_SS != FF_MIN_SS) */
#define GET_BLOCK_SIZE		3	/* Get erase block size (needed at FF_USE_MKFS == 1) */
#define CTRL_TRIM			4	/* Inform device that the data on the block of sectors is no longer used (needed at FF_USE_TRIM == 1) */
#define SET_SECTOR_OFFSET	5	/* Set media logical offset */
#define SET_WRITE_PROTECT	6	/* Lock/Unlock media removal */

#ifdef __cplusplus
}
#endif

#endif