this library has few changes from the original library, for effects of this work.
Diff: FATFileSystem/ChaN/diskio.cpp
- Revision:
- 0:8214896432e0
diff -r 000000000000 -r 8214896432e0 FATFileSystem/ChaN/diskio.cpp --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/FATFileSystem/ChaN/diskio.cpp Mon May 21 15:10:37 2018 +0000 @@ -0,0 +1,117 @@ +/*-----------------------------------------------------------------------*/ +/* Low level disk I/O module skeleton for FatFs (C)ChaN, 2014 */ +/*-----------------------------------------------------------------------*/ +/* If a working storage control module is available, it should be */ +/* attached to the FatFs via a glue function rather than modifying it. */ +/* This is an example of glue functions to attach various exsisting */ +/* storage control modules to the FatFs module with a defined API. */ +/*-----------------------------------------------------------------------*/ + +#include "diskio.h" +#include "mbed_debug.h" +#include "FATFileSystem.h" + +using namespace mbed; + +/*-----------------------------------------------------------------------*/ +/* Get Drive Status */ +/*-----------------------------------------------------------------------*/ + +DSTATUS disk_status ( + BYTE pdrv /* Physical drive nmuber to identify the drive */ +) +{ + debug_if(FFS_DBG, "disk_status on pdrv [%d]\n", pdrv); + return (DSTATUS)FATFileSystem::_ffs[pdrv]->disk_status(); +} + +/*-----------------------------------------------------------------------*/ +/* Inidialize a Drive */ +/*-----------------------------------------------------------------------*/ + +DSTATUS disk_initialize ( + BYTE pdrv /* Physical drive nmuber to identify the drive */ +) +{ + debug_if(FFS_DBG, "disk_initialize on pdrv [%d]\n", pdrv); + return (DSTATUS)FATFileSystem::_ffs[pdrv]->disk_initialize(); +} + +/*-----------------------------------------------------------------------*/ +/* Read Sector(s) */ +/*-----------------------------------------------------------------------*/ + +DRESULT disk_read ( + BYTE pdrv, /* Physical drive nmuber to identify the drive */ + BYTE* buff, /* Data buffer to store read data */ + DWORD sector, /* Sector address in LBA */ + UINT count /* Number of sectors to read */ +) +{ + debug_if(FFS_DBG, "disk_read(sector %d, count %d) on pdrv [%d]\n", sector, count, pdrv); + if (FATFileSystem::_ffs[pdrv]->disk_read((uint8_t*)buff, sector, count)) + return RES_PARERR; + else + return RES_OK; +} + +/*-----------------------------------------------------------------------*/ +/* Write Sector(s) */ +/*-----------------------------------------------------------------------*/ + +#if _USE_WRITE +DRESULT disk_write ( + BYTE pdrv, /* Physical drive nmuber to identify the drive */ + const BYTE* buff, /* Data to be written */ + DWORD sector, /* Sector address in LBA */ + UINT count /* Number of sectors to write */ +) +{ + debug_if(FFS_DBG, "disk_write(sector %d, count %d) on pdrv [%d]\n", sector, count, pdrv); + if (FATFileSystem::_ffs[pdrv]->disk_write((uint8_t*)buff, sector, count)) + return RES_PARERR; + else + return RES_OK; +} +#endif + +/*-----------------------------------------------------------------------*/ +/* Miscellaneous Functions */ +/*-----------------------------------------------------------------------*/ + +#if _USE_IOCTL +DRESULT disk_ioctl ( + BYTE pdrv, /* Physical drive nmuber (0..) */ + BYTE cmd, /* Control code */ + void* buff /* Buffer to send/receive control data */ +) +{ + debug_if(FFS_DBG, "disk_ioctl(%d)\n", cmd); + switch(cmd) { + case CTRL_SYNC: + if(FATFileSystem::_ffs[pdrv] == NULL) { + return RES_NOTRDY; + } else if(FATFileSystem::_ffs[pdrv]->disk_sync()) { + return RES_ERROR; + } + return RES_OK; + case GET_SECTOR_COUNT: + if(FATFileSystem::_ffs[pdrv] == NULL) { + return RES_NOTRDY; + } else { + DWORD res = FATFileSystem::_ffs[pdrv]->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; +} +#endif