my version
Fork of FATFileSystem by
ChaN/diskio.cpp
- Committer:
- mbed_official
- Date:
- 2014-08-28
- Revision:
- 4:3ff2606d5713
- Parent:
- 2:b6669c987c8e
File content as of revision 4:3ff2606d5713:
/*-----------------------------------------------------------------------*/ /* Low level disk I/O module skeleton for FatFs (C)ChaN, 2007 */ /*-----------------------------------------------------------------------*/ /* This is a stub disk I/O module that acts as front end of the existing */ /* disk I/O modules and attach it to FatFs module with common interface. */ /*-----------------------------------------------------------------------*/ #include "ffconf.h" #include "diskio.h" #include "mbed_debug.h" #include "FATFileSystem.h" using namespace mbed; DSTATUS disk_initialize ( BYTE drv /* Physical drive nmuber (0..) */ ) { debug_if(FFS_DBG, "disk_initialize on drv [%d]\n", drv); return (DSTATUS)FATFileSystem::_ffs[drv]->disk_initialize(); } DSTATUS disk_status ( BYTE drv /* Physical drive nmuber (0..) */ ) { debug_if(FFS_DBG, "disk_status on drv [%d]\n", drv); return (DSTATUS)FATFileSystem::_ffs[drv]->disk_status(); } DRESULT disk_read ( BYTE drv, /* Physical drive nmuber (0..) */ BYTE *buff, /* Data buffer to store read data */ DWORD sector, /* Sector address (LBA) */ BYTE count /* Number of sectors to read (1..255) */ ) { debug_if(FFS_DBG, "disk_read(sector %d, count %d) on drv [%d]\n", sector, count, drv); if (FATFileSystem::_ffs[drv]->disk_read((uint8_t*)buff, sector, count)) return RES_PARERR; else return RES_OK; } #if _READONLY == 0 DRESULT disk_write ( BYTE drv, /* Physical drive nmuber (0..) */ const BYTE *buff, /* Data to be written */ DWORD sector, /* Sector address (LBA) */ BYTE count /* Number of sectors to write (1..255) */ ) { debug_if(FFS_DBG, "disk_write(sector %d, count %d) on drv [%d]\n", sector, count, drv); if (FATFileSystem::_ffs[drv]->disk_write((uint8_t*)buff, sector, count)) return RES_PARERR; else return RES_OK; } #endif /* _READONLY */ DRESULT disk_ioctl ( BYTE drv, /* Physical drive nmuber (0..) */ BYTE ctrl, /* Control code */ void *buff /* Buffer to send/receive control data */ ) { debug_if(FFS_DBG, "disk_ioctl(%d)\n", ctrl); switch(ctrl) { case CTRL_SYNC: if(FATFileSystem::_ffs[drv] == NULL) { return RES_NOTRDY; } else if(FATFileSystem::_ffs[drv]->disk_sync()) { return RES_ERROR; } return RES_OK; case GET_SECTOR_COUNT: if(FATFileSystem::_ffs[drv] == NULL) { return RES_NOTRDY; } else { DWORD res = FATFileSystem::_ffs[drv]->disk_sectors(); if(res > 0) { *((DWORD*)buff) = res; // minimum allowed return RES_OK; } else { return RES_ERROR; } } case GET_BLOCK_SIZE: *((DWORD*)buff) = 1; // default when not known return RES_OK; } return RES_PARERR; }