Some library needed for things? Licence unknown
diskio.c@0:e4324838bc6f, 2012-07-29 (annotated)
- Committer:
- TBSliver
- Date:
- Sun Jul 29 10:07:38 2012 +0000
- Revision:
- 0:e4324838bc6f
[mbed] converted /LEDSign_SimpleSD/FatFileSystem
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
TBSliver | 0:e4324838bc6f | 1 | /*-----------------------------------------------------------------------*/ |
TBSliver | 0:e4324838bc6f | 2 | /* Low level disk I/O module skeleton for FatFs (C)ChaN, 2007 */ |
TBSliver | 0:e4324838bc6f | 3 | /*-----------------------------------------------------------------------*/ |
TBSliver | 0:e4324838bc6f | 4 | /* This is a stub disk I/O module that acts as front end of the existing */ |
TBSliver | 0:e4324838bc6f | 5 | /* disk I/O modules and attach it to FatFs module with common interface. */ |
TBSliver | 0:e4324838bc6f | 6 | /*-----------------------------------------------------------------------*/ |
TBSliver | 0:e4324838bc6f | 7 | |
TBSliver | 0:e4324838bc6f | 8 | #include "diskio.h" |
TBSliver | 0:e4324838bc6f | 9 | #include <stdio.h> |
TBSliver | 0:e4324838bc6f | 10 | #include <string.h> |
TBSliver | 0:e4324838bc6f | 11 | #include "FATFileSystem.h" |
TBSliver | 0:e4324838bc6f | 12 | |
TBSliver | 0:e4324838bc6f | 13 | #include "mbed.h" |
TBSliver | 0:e4324838bc6f | 14 | |
TBSliver | 0:e4324838bc6f | 15 | DSTATUS disk_initialize ( |
TBSliver | 0:e4324838bc6f | 16 | BYTE drv /* Physical drive nmuber (0..) */ |
TBSliver | 0:e4324838bc6f | 17 | ) |
TBSliver | 0:e4324838bc6f | 18 | { |
TBSliver | 0:e4324838bc6f | 19 | FFSDEBUG("disk_initialize on drv [%d]\n", drv); |
TBSliver | 0:e4324838bc6f | 20 | return (DSTATUS)FATFileSystem::_ffs[drv]->disk_initialize(); |
TBSliver | 0:e4324838bc6f | 21 | } |
TBSliver | 0:e4324838bc6f | 22 | |
TBSliver | 0:e4324838bc6f | 23 | DSTATUS disk_status ( |
TBSliver | 0:e4324838bc6f | 24 | BYTE drv /* Physical drive nmuber (0..) */ |
TBSliver | 0:e4324838bc6f | 25 | ) |
TBSliver | 0:e4324838bc6f | 26 | { |
TBSliver | 0:e4324838bc6f | 27 | FFSDEBUG("disk_status on drv [%d]\n", drv); |
TBSliver | 0:e4324838bc6f | 28 | return (DSTATUS)FATFileSystem::_ffs[drv]->disk_status(); |
TBSliver | 0:e4324838bc6f | 29 | } |
TBSliver | 0:e4324838bc6f | 30 | |
TBSliver | 0:e4324838bc6f | 31 | DRESULT disk_read ( |
TBSliver | 0:e4324838bc6f | 32 | BYTE drv, /* Physical drive nmuber (0..) */ |
TBSliver | 0:e4324838bc6f | 33 | BYTE *buff, /* Data buffer to store read data */ |
TBSliver | 0:e4324838bc6f | 34 | DWORD sector, /* Sector address (LBA) */ |
TBSliver | 0:e4324838bc6f | 35 | BYTE count /* Number of sectors to read (1..255) */ |
TBSliver | 0:e4324838bc6f | 36 | ) |
TBSliver | 0:e4324838bc6f | 37 | { |
TBSliver | 0:e4324838bc6f | 38 | FFSDEBUG("disk_read(sector %d, count %d) on drv [%d]\n", sector, count, drv); |
TBSliver | 0:e4324838bc6f | 39 | for(DWORD s=sector; s<sector+count; s++) { |
TBSliver | 0:e4324838bc6f | 40 | FFSDEBUG(" disk_read(sector %d)\n", s); |
TBSliver | 0:e4324838bc6f | 41 | int res = FATFileSystem::_ffs[drv]->disk_read((char*)buff, s); |
TBSliver | 0:e4324838bc6f | 42 | if(res) { |
TBSliver | 0:e4324838bc6f | 43 | return RES_PARERR; |
TBSliver | 0:e4324838bc6f | 44 | } |
TBSliver | 0:e4324838bc6f | 45 | buff += 512; |
TBSliver | 0:e4324838bc6f | 46 | } |
TBSliver | 0:e4324838bc6f | 47 | return RES_OK; |
TBSliver | 0:e4324838bc6f | 48 | } |
TBSliver | 0:e4324838bc6f | 49 | |
TBSliver | 0:e4324838bc6f | 50 | #if _READONLY == 0 |
TBSliver | 0:e4324838bc6f | 51 | DRESULT disk_write ( |
TBSliver | 0:e4324838bc6f | 52 | BYTE drv, /* Physical drive nmuber (0..) */ |
TBSliver | 0:e4324838bc6f | 53 | const BYTE *buff, /* Data to be written */ |
TBSliver | 0:e4324838bc6f | 54 | DWORD sector, /* Sector address (LBA) */ |
TBSliver | 0:e4324838bc6f | 55 | BYTE count /* Number of sectors to write (1..255) */ |
TBSliver | 0:e4324838bc6f | 56 | ) |
TBSliver | 0:e4324838bc6f | 57 | { |
TBSliver | 0:e4324838bc6f | 58 | FFSDEBUG("disk_write(sector %d, count %d) on drv [%d]\n", sector, count, drv); |
TBSliver | 0:e4324838bc6f | 59 | for(DWORD s=sector; s<sector+count; s++) { |
TBSliver | 0:e4324838bc6f | 60 | FFSDEBUG(" disk_write(sector %d)\n", s); |
TBSliver | 0:e4324838bc6f | 61 | int res = FATFileSystem::_ffs[drv]->disk_write((char*)buff, s); |
TBSliver | 0:e4324838bc6f | 62 | if(res) { |
TBSliver | 0:e4324838bc6f | 63 | return RES_PARERR; |
TBSliver | 0:e4324838bc6f | 64 | } |
TBSliver | 0:e4324838bc6f | 65 | buff += 512; |
TBSliver | 0:e4324838bc6f | 66 | } |
TBSliver | 0:e4324838bc6f | 67 | return RES_OK; |
TBSliver | 0:e4324838bc6f | 68 | } |
TBSliver | 0:e4324838bc6f | 69 | #endif /* _READONLY */ |
TBSliver | 0:e4324838bc6f | 70 | |
TBSliver | 0:e4324838bc6f | 71 | DRESULT disk_ioctl ( |
TBSliver | 0:e4324838bc6f | 72 | BYTE drv, /* Physical drive nmuber (0..) */ |
TBSliver | 0:e4324838bc6f | 73 | BYTE ctrl, /* Control code */ |
TBSliver | 0:e4324838bc6f | 74 | void *buff /* Buffer to send/receive control data */ |
TBSliver | 0:e4324838bc6f | 75 | ) |
TBSliver | 0:e4324838bc6f | 76 | { |
TBSliver | 0:e4324838bc6f | 77 | FFSDEBUG("disk_ioctl(%d)\n", ctrl); |
TBSliver | 0:e4324838bc6f | 78 | switch(ctrl) { |
TBSliver | 0:e4324838bc6f | 79 | case CTRL_SYNC: |
TBSliver | 0:e4324838bc6f | 80 | if(FATFileSystem::_ffs[drv] == NULL) { |
TBSliver | 0:e4324838bc6f | 81 | return RES_NOTRDY; |
TBSliver | 0:e4324838bc6f | 82 | } else if(FATFileSystem::_ffs[drv]->disk_sync()) { |
TBSliver | 0:e4324838bc6f | 83 | return RES_ERROR; |
TBSliver | 0:e4324838bc6f | 84 | } |
TBSliver | 0:e4324838bc6f | 85 | return RES_OK; |
TBSliver | 0:e4324838bc6f | 86 | case GET_SECTOR_COUNT: |
TBSliver | 0:e4324838bc6f | 87 | if(FATFileSystem::_ffs[drv] == NULL) { |
TBSliver | 0:e4324838bc6f | 88 | return RES_NOTRDY; |
TBSliver | 0:e4324838bc6f | 89 | } else { |
TBSliver | 0:e4324838bc6f | 90 | int res = FATFileSystem::_ffs[drv]->disk_sectors(); |
TBSliver | 0:e4324838bc6f | 91 | if(res > 0) { |
TBSliver | 0:e4324838bc6f | 92 | *((DWORD*)buff) = res; // minimum allowed |
TBSliver | 0:e4324838bc6f | 93 | return RES_OK; |
TBSliver | 0:e4324838bc6f | 94 | } else { |
TBSliver | 0:e4324838bc6f | 95 | return RES_ERROR; |
TBSliver | 0:e4324838bc6f | 96 | } |
TBSliver | 0:e4324838bc6f | 97 | } |
TBSliver | 0:e4324838bc6f | 98 | case GET_BLOCK_SIZE: |
TBSliver | 0:e4324838bc6f | 99 | *((DWORD*)buff) = 1; // default when not known |
TBSliver | 0:e4324838bc6f | 100 | return RES_OK; |
TBSliver | 0:e4324838bc6f | 101 | |
TBSliver | 0:e4324838bc6f | 102 | } |
TBSliver | 0:e4324838bc6f | 103 | return RES_PARERR; |
TBSliver | 0:e4324838bc6f | 104 | } |
TBSliver | 0:e4324838bc6f | 105 |