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FATFileSystem/ChaN/diskio.cpp@26:49c13dfc95d0, 2016-11-30 (annotated)
- Committer:
- schmalzl
- Date:
- Wed Nov 30 10:51:48 2016 +0000
- Revision:
- 26:49c13dfc95d0
- Parent:
- 24:5396b6a93262
Turbo Ede v1
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
DieterGraef | 24:5396b6a93262 | 1 | /*-----------------------------------------------------------------------*/ |
DieterGraef | 24:5396b6a93262 | 2 | /* Low level disk I/O module skeleton for FatFs (C)ChaN, 2007 */ |
DieterGraef | 24:5396b6a93262 | 3 | /*-----------------------------------------------------------------------*/ |
DieterGraef | 24:5396b6a93262 | 4 | /* This is a stub disk I/O module that acts as front end of the existing */ |
DieterGraef | 24:5396b6a93262 | 5 | /* disk I/O modules and attach it to FatFs module with common interface. */ |
DieterGraef | 24:5396b6a93262 | 6 | /*-----------------------------------------------------------------------*/ |
DieterGraef | 24:5396b6a93262 | 7 | #include "ffconf.h" |
DieterGraef | 24:5396b6a93262 | 8 | #include "diskio.h" |
DieterGraef | 24:5396b6a93262 | 9 | |
DieterGraef | 24:5396b6a93262 | 10 | #include "mbed_debug.h" |
DieterGraef | 24:5396b6a93262 | 11 | #include "FATFileSystem.h" |
DieterGraef | 24:5396b6a93262 | 12 | |
DieterGraef | 24:5396b6a93262 | 13 | using namespace mbed; |
DieterGraef | 24:5396b6a93262 | 14 | |
DieterGraef | 24:5396b6a93262 | 15 | DSTATUS disk_initialize ( |
DieterGraef | 24:5396b6a93262 | 16 | BYTE pdrv /* Physical drive number (0..) */ |
DieterGraef | 24:5396b6a93262 | 17 | ) |
DieterGraef | 24:5396b6a93262 | 18 | { |
DieterGraef | 24:5396b6a93262 | 19 | debug_if(FFS_DBG, "disk_initialize on pdrv [%d]\n", pdrv); |
DieterGraef | 24:5396b6a93262 | 20 | return (DSTATUS)FATFileSystem::_ffs[pdrv]->disk_initialize(); |
DieterGraef | 24:5396b6a93262 | 21 | } |
DieterGraef | 24:5396b6a93262 | 22 | |
DieterGraef | 24:5396b6a93262 | 23 | DSTATUS disk_status ( |
DieterGraef | 24:5396b6a93262 | 24 | BYTE pdrv /* Physical drive number (0..) */ |
DieterGraef | 24:5396b6a93262 | 25 | ) |
DieterGraef | 24:5396b6a93262 | 26 | { |
DieterGraef | 24:5396b6a93262 | 27 | debug_if(FFS_DBG, "disk_status on pdrv [%d]\n", pdrv); |
DieterGraef | 24:5396b6a93262 | 28 | return (DSTATUS)FATFileSystem::_ffs[pdrv]->disk_status(); |
DieterGraef | 24:5396b6a93262 | 29 | } |
DieterGraef | 24:5396b6a93262 | 30 | |
DieterGraef | 24:5396b6a93262 | 31 | DRESULT disk_read ( |
DieterGraef | 24:5396b6a93262 | 32 | BYTE pdrv, /* Physical drive number (0..) */ |
DieterGraef | 24:5396b6a93262 | 33 | BYTE* buff, /* Data buffer to store read data */ |
DieterGraef | 24:5396b6a93262 | 34 | DWORD sector, /* Sector address (LBA) */ |
DieterGraef | 24:5396b6a93262 | 35 | UINT count /* Number of sectors to read (1..) */ |
DieterGraef | 24:5396b6a93262 | 36 | ) |
DieterGraef | 24:5396b6a93262 | 37 | { |
DieterGraef | 24:5396b6a93262 | 38 | debug_if(FFS_DBG, "disk_read(sector %d, count %d) on pdrv [%d]\n", sector, count, pdrv); |
DieterGraef | 24:5396b6a93262 | 39 | if (FATFileSystem::_ffs[pdrv]->disk_read((uint8_t*)buff, sector, count)) |
DieterGraef | 24:5396b6a93262 | 40 | return RES_PARERR; |
DieterGraef | 24:5396b6a93262 | 41 | else |
DieterGraef | 24:5396b6a93262 | 42 | return RES_OK; |
DieterGraef | 24:5396b6a93262 | 43 | } |
DieterGraef | 24:5396b6a93262 | 44 | |
DieterGraef | 24:5396b6a93262 | 45 | #if _READONLY == 0 |
DieterGraef | 24:5396b6a93262 | 46 | DRESULT disk_write ( |
DieterGraef | 24:5396b6a93262 | 47 | BYTE pdrv, /* Physical drive number (0..) */ |
DieterGraef | 24:5396b6a93262 | 48 | const BYTE* buff, /* Data to be written */ |
DieterGraef | 24:5396b6a93262 | 49 | DWORD sector, /* Sector address (LBA) */ |
DieterGraef | 24:5396b6a93262 | 50 | UINT count /* Number of sectors to write (1..) */ |
DieterGraef | 24:5396b6a93262 | 51 | ) |
DieterGraef | 24:5396b6a93262 | 52 | { |
DieterGraef | 24:5396b6a93262 | 53 | debug_if(FFS_DBG, "disk_write(sector %d, count %d) on pdrv [%d]\n", sector, count, pdrv); |
DieterGraef | 24:5396b6a93262 | 54 | if (FATFileSystem::_ffs[pdrv]->disk_write((uint8_t*)buff, sector, count)) |
DieterGraef | 24:5396b6a93262 | 55 | return RES_PARERR; |
DieterGraef | 24:5396b6a93262 | 56 | else |
DieterGraef | 24:5396b6a93262 | 57 | return RES_OK; |
DieterGraef | 24:5396b6a93262 | 58 | } |
DieterGraef | 24:5396b6a93262 | 59 | #endif /* _READONLY */ |
DieterGraef | 24:5396b6a93262 | 60 | |
DieterGraef | 24:5396b6a93262 | 61 | DRESULT disk_ioctl ( |
DieterGraef | 24:5396b6a93262 | 62 | BYTE pdrv, /* Physical drive number (0..) */ |
DieterGraef | 24:5396b6a93262 | 63 | BYTE cmd, /* Control code */ |
DieterGraef | 24:5396b6a93262 | 64 | void* buff /* Buffer to send/receive control data */ |
DieterGraef | 24:5396b6a93262 | 65 | ) |
DieterGraef | 24:5396b6a93262 | 66 | { |
DieterGraef | 24:5396b6a93262 | 67 | debug_if(FFS_DBG, "disk_ioctl(%d)\n", cmd); |
DieterGraef | 24:5396b6a93262 | 68 | switch(cmd) { |
DieterGraef | 24:5396b6a93262 | 69 | case CTRL_SYNC: |
DieterGraef | 24:5396b6a93262 | 70 | if(FATFileSystem::_ffs[pdrv] == NULL) { |
DieterGraef | 24:5396b6a93262 | 71 | return RES_NOTRDY; |
DieterGraef | 24:5396b6a93262 | 72 | } else if(FATFileSystem::_ffs[pdrv]->disk_sync()) { |
DieterGraef | 24:5396b6a93262 | 73 | return RES_ERROR; |
DieterGraef | 24:5396b6a93262 | 74 | } |
DieterGraef | 24:5396b6a93262 | 75 | return RES_OK; |
DieterGraef | 24:5396b6a93262 | 76 | case GET_SECTOR_COUNT: |
DieterGraef | 24:5396b6a93262 | 77 | if(FATFileSystem::_ffs[pdrv] == NULL) { |
DieterGraef | 24:5396b6a93262 | 78 | return RES_NOTRDY; |
DieterGraef | 24:5396b6a93262 | 79 | } else { |
DieterGraef | 24:5396b6a93262 | 80 | DWORD res = FATFileSystem::_ffs[pdrv]->disk_sectors(); |
DieterGraef | 24:5396b6a93262 | 81 | if(res > 0) { |
DieterGraef | 24:5396b6a93262 | 82 | *((DWORD*)buff) = res; // minimum allowed |
DieterGraef | 24:5396b6a93262 | 83 | return RES_OK; |
DieterGraef | 24:5396b6a93262 | 84 | } else { |
DieterGraef | 24:5396b6a93262 | 85 | return RES_ERROR; |
DieterGraef | 24:5396b6a93262 | 86 | } |
DieterGraef | 24:5396b6a93262 | 87 | } |
DieterGraef | 24:5396b6a93262 | 88 | case GET_BLOCK_SIZE: |
DieterGraef | 24:5396b6a93262 | 89 | *((DWORD*)buff) = 1; // default when not known |
DieterGraef | 24:5396b6a93262 | 90 | return RES_OK; |
DieterGraef | 24:5396b6a93262 | 91 | |
DieterGraef | 24:5396b6a93262 | 92 | } |
DieterGraef | 24:5396b6a93262 | 93 | return RES_PARERR; |
DieterGraef | 24:5396b6a93262 | 94 | } |