IO.h

 
#pragma once
#include "../ff/ffdef.h"
 
 
namespace fatfs {
 
// forward declaration of FatFs
class FatFs;  // forward declaration
 
 
enum DSTATUS {
 STA_CLEAR=0X00,
 STA_NOINIT=0x01,  
 STA_NODISK=0x02,  
 STA_PROTECT=0x04  
};
 
enum DRESULT {
  RES_OK = 0, 
  RES_ERROR,  
  RES_WRPRT,  
  RES_NOTRDY, 
  RES_PARERR  
};
 
enum ioctl_cmd_t {
  /* Generic command (Used by FatFs) */
  CTRL_SYNC =
      0, /* Complete pending write process (needed at FF_FS_READONLY == 0) */
  GET_SECTOR_COUNT = 1, /* Get media size (needed at FF_USE_MKFS == 1) */
  GET_SECTOR_SIZE = 2,  /* Get sector size (needed at FF_MAX_SS != FF_MIN_SS) */
  GET_BLOCK_SIZE = 3,   /* Get erase block size (needed at FF_USE_MKFS == 1) \
                         */
  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) */
  CTRL_POWER = 5,  /* Get/Set power status */
  CTRL_LOCK = 6,   /* Lock/Unlock media removal */
  CTRL_EJECT = 7,  /* Eject media */
  CTRL_FORMAT = 8, /* Create physical format on the media */
 
  /* MMC/SDC specific ioctl command */
  MMC_GET_TYPE = 10,   /* Get card type */
  MMC_GET_CSD = 11,    /* Get CSD */
  MMC_GET_CID = 12,    /* Get CID */
  MMC_GET_OCR = 13,    /* Get OCR */
  MMC_GET_SDSTAT = 14, /* Get SD status */
  ISDIO_READ = 55,     /* Read data form SD iSDIO register */
  ISDIO_WRITE = 56,    /* Write data to SD iSDIO register */
  ISDIO_MRITE = 57,    /* Masked write data to SD iSDIO register */
 
  /* ATA/CF specific ioctl command */
  ATA_GET_REV = 20,   /* Get F/W revision */
  ATA_GET_MODEL = 21, /* Get model name */
  ATA_GET_SN = 22     /* Get serial number */
};
 
class IO {
 public:
  virtual FRESULT mount(FatFs& fs);
  virtual FRESULT un_mount(FatFs& fs);
 
  virtual DSTATUS disk_initialize(BYTE pdrv) = 0;
  virtual DSTATUS disk_status(BYTE pdrv) = 0;
  virtual DRESULT disk_read(BYTE pdrv, BYTE* buff, LBA_t sector,
                            UINT count) = 0;
  virtual DRESULT disk_write(BYTE pdrv, const BYTE* buff, LBA_t sector,
                             UINT count) = 0;
  virtual DRESULT disk_ioctl(BYTE pdrv, ioctl_cmd_t cmd, void* buff) = 0;
 
  FATFS fatfs;
};
 
}  // namespace fatfs
 
// Include FatFs header now to resolve the forward declaration
#include "../ff/ff.h"
 
namespace fatfs {
 
// Inline implementations (moved from IO.cpp)
inline FRESULT IO::mount(FatFs& fs) { return fs.f_mount(&fatfs, "", 0); }
inline FRESULT IO::un_mount(FatFs& fs) { return fs.f_unmount(""); }
 
}  // namespace fatfs