text: /*-----------------------------------------------------------------------/
  /  Low level disk interface modlue include file   (C)ChaN, 2014          /
  /-----------------------------------------------------------------------*/
  
  #ifndef _DISKIO_DEFINED
  #define _DISKIO_DEFINED
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  //#include "integer.h"
  
  /* Definitions of physical drive number for each drive */
  #define RAMDISK         0       /* Example: ram disk to physical drive 0 */
  #define USBDISK         1       /* usb disk to physical drive 1 */
  #define SDDISK          2       /* sd disk to physical drive 2 */
  #define MMCDISK         3       /* mmc disk to physical drive 3 */
  #define SDSPIDISK       4       /* sdspi disk to physical drive 4 */
  
  /* 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);
  DRESULT disk_write (BYTE pdrv, const BYTE* buff, DWORD sector, UINT count);
  DRESULT disk_ioctl (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 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) */
  
  /* Generic command (Not used by FatFs) */
  #define CTRL_POWER			5	/* Get/Set power status */
  #define CTRL_LOCK			6	/* Lock/Unlock media removal */
  #define CTRL_EJECT			7	/* Eject media */
  #define CTRL_FORMAT			8	/* Create physical format on the media */
  
  /* MMC/SDC specific ioctl command */
  #define MMC_GET_TYPE		10	/* Get card type */
  #define MMC_GET_CSD			11	/* Get CSD */
  #define MMC_GET_CID			12	/* Get CID */
  #define MMC_GET_OCR			13	/* Get OCR */
  #define MMC_GET_SDSTAT		14	/* Get SD status */
  #define ISDIO_READ			55	/* Read data form SD iSDIO register */
  #define ISDIO_WRITE			56	/* Write data to SD iSDIO register */
  #define ISDIO_MRITE			57	/* Masked write data to SD iSDIO register */
  
  /* ATA/CF specific ioctl command */
  #define ATA_GET_REV			20	/* Get F/W revision */
  #define ATA_GET_MODEL		21	/* Get model name */
  #define ATA_GET_SN			22	/* Get serial number */
  
  #ifdef __cplusplus
  }
  #endif
  
  #endif
  