text: /*-----------------------------------------------------------------------
  /  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
  void disk_timerproc(void);
  
  #define SZ_RAMDISK	1536	/* Size of RAM disk [kB] */
  #define SS_RAMDISK	512		/* Sector size of RAM disk [byte] */
  
  DSTATUS ramdisk_initialize (void);
  DSTATUS ramdisk_get_status (void);
  DRESULT ramdisk_read (BYTE* buff, DWORD sector, UINT count);
  DRESULT ramdisk_write (const BYTE* buff, DWORD sector, UINT count);
  
  /* 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	/* _DISKIO_DEFINED */
  