Ryo Iizuka / NySDFileSystem

This is SDFileSystem which corrected the bug for MiMicSDK.

Dependents:   MbedFileServer_1768MiniDK2 RedWireBridge IssueDebug_gcc MiMicRemoteMCU-for-Mbed ... more

Fork of SDFileSystem by mbed official

FATFileSystem/ChaN/diskio.cpp@5:2c7b6bd5b079, 2013-04-25 (annotated)

Committer:
nyatla
Date:
Thu Apr 25 02:14:56 2013 +0000
Revision:
5:2c7b6bd5b079
Child:
7:5429e81addde
This is SDFileSystem which corrected the bug. ;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
nyatla 5:2c7b6bd5b079 1 /*-----------------------------------------------------------------------*/
nyatla 5:2c7b6bd5b079 2 /* Low level disk I/O module skeleton for FatFs (C)ChaN, 2007 */
nyatla 5:2c7b6bd5b079 3 /*-----------------------------------------------------------------------*/
nyatla 5:2c7b6bd5b079 4 /* This is a stub disk I/O module that acts as front end of the existing */
nyatla 5:2c7b6bd5b079 5 /* disk I/O modules and attach it to FatFs module with common interface. */
nyatla 5:2c7b6bd5b079 6 /*-----------------------------------------------------------------------*/
nyatla 5:2c7b6bd5b079 7 #include "ffconf.h"
nyatla 5:2c7b6bd5b079 8 #include "diskio.h"
nyatla 5:2c7b6bd5b079 9
nyatla 5:2c7b6bd5b079 10 #include "mbed_debug.h"
nyatla 5:2c7b6bd5b079 11 #include "FATFileSystem.h"
nyatla 5:2c7b6bd5b079 12
nyatla 5:2c7b6bd5b079 13 using namespace mbed;
nyatla 5:2c7b6bd5b079 14
nyatla 5:2c7b6bd5b079 15 DSTATUS disk_initialize (
nyatla 5:2c7b6bd5b079 16 BYTE drv /* Physical drive nmuber (0..) */
nyatla 5:2c7b6bd5b079 17 )
nyatla 5:2c7b6bd5b079 18 {
nyatla 5:2c7b6bd5b079 19 debug_if(FFS_DBG, "disk_initialize on drv [%d]\n", drv);
nyatla 5:2c7b6bd5b079 20 return (DSTATUS)FATFileSystem::_ffs[drv]->disk_initialize();
nyatla 5:2c7b6bd5b079 21 }
nyatla 5:2c7b6bd5b079 22
nyatla 5:2c7b6bd5b079 23 DSTATUS disk_status (
nyatla 5:2c7b6bd5b079 24 BYTE drv /* Physical drive nmuber (0..) */
nyatla 5:2c7b6bd5b079 25 )
nyatla 5:2c7b6bd5b079 26 {
nyatla 5:2c7b6bd5b079 27 debug_if(FFS_DBG, "disk_status on drv [%d]\n", drv);
nyatla 5:2c7b6bd5b079 28 return (DSTATUS)FATFileSystem::_ffs[drv]->disk_status();
nyatla 5:2c7b6bd5b079 29 }
nyatla 5:2c7b6bd5b079 30
nyatla 5:2c7b6bd5b079 31 DRESULT disk_read (
nyatla 5:2c7b6bd5b079 32 BYTE drv, /* Physical drive nmuber (0..) */
nyatla 5:2c7b6bd5b079 33 BYTE *buff, /* Data buffer to store read data */
nyatla 5:2c7b6bd5b079 34 DWORD sector, /* Sector address (LBA) */
nyatla 5:2c7b6bd5b079 35 BYTE count /* Number of sectors to read (1..255) */
nyatla 5:2c7b6bd5b079 36 )
nyatla 5:2c7b6bd5b079 37 {
nyatla 5:2c7b6bd5b079 38 debug_if(FFS_DBG, "disk_read(sector %d, count %d) on drv [%d]\n", sector, count, drv);
nyatla 5:2c7b6bd5b079 39 for(DWORD s=sector; s<sector+count; s++) {
nyatla 5:2c7b6bd5b079 40 debug_if(FFS_DBG, " disk_read(sector %d)\n", s);
nyatla 5:2c7b6bd5b079 41 int res = FATFileSystem::_ffs[drv]->disk_read((uint8_t*)buff, s);
nyatla 5:2c7b6bd5b079 42 if(res) {
nyatla 5:2c7b6bd5b079 43 return RES_PARERR;
nyatla 5:2c7b6bd5b079 44 }
nyatla 5:2c7b6bd5b079 45 buff += 512;
nyatla 5:2c7b6bd5b079 46 }
nyatla 5:2c7b6bd5b079 47 return RES_OK;
nyatla 5:2c7b6bd5b079 48 }
nyatla 5:2c7b6bd5b079 49
nyatla 5:2c7b6bd5b079 50 #if _READONLY == 0
nyatla 5:2c7b6bd5b079 51 DRESULT disk_write (
nyatla 5:2c7b6bd5b079 52 BYTE drv, /* Physical drive nmuber (0..) */
nyatla 5:2c7b6bd5b079 53 const BYTE *buff, /* Data to be written */
nyatla 5:2c7b6bd5b079 54 DWORD sector, /* Sector address (LBA) */
nyatla 5:2c7b6bd5b079 55 BYTE count /* Number of sectors to write (1..255) */
nyatla 5:2c7b6bd5b079 56 )
nyatla 5:2c7b6bd5b079 57 {
nyatla 5:2c7b6bd5b079 58 debug_if(FFS_DBG, "disk_write(sector %d, count %d) on drv [%d]\n", sector, count, drv);
nyatla 5:2c7b6bd5b079 59 for(DWORD s = sector; s < sector + count; s++) {
nyatla 5:2c7b6bd5b079 60 debug_if(FFS_DBG, " disk_write(sector %d)\n", s);
nyatla 5:2c7b6bd5b079 61 int res = FATFileSystem::_ffs[drv]->disk_write((uint8_t*)buff, s);
nyatla 5:2c7b6bd5b079 62 if(res) {
nyatla 5:2c7b6bd5b079 63 return RES_PARERR;
nyatla 5:2c7b6bd5b079 64 }
nyatla 5:2c7b6bd5b079 65 buff += 512;
nyatla 5:2c7b6bd5b079 66 }
nyatla 5:2c7b6bd5b079 67 return RES_OK;
nyatla 5:2c7b6bd5b079 68 }
nyatla 5:2c7b6bd5b079 69 #endif /* _READONLY */
nyatla 5:2c7b6bd5b079 70
nyatla 5:2c7b6bd5b079 71 DRESULT disk_ioctl (
nyatla 5:2c7b6bd5b079 72 BYTE drv, /* Physical drive nmuber (0..) */
nyatla 5:2c7b6bd5b079 73 BYTE ctrl, /* Control code */
nyatla 5:2c7b6bd5b079 74 void *buff /* Buffer to send/receive control data */
nyatla 5:2c7b6bd5b079 75 )
nyatla 5:2c7b6bd5b079 76 {
nyatla 5:2c7b6bd5b079 77 debug_if(FFS_DBG, "disk_ioctl(%d)\n", ctrl);
nyatla 5:2c7b6bd5b079 78 switch(ctrl) {
nyatla 5:2c7b6bd5b079 79 case CTRL_SYNC:
nyatla 5:2c7b6bd5b079 80 if(FATFileSystem::_ffs[drv] == NULL) {
nyatla 5:2c7b6bd5b079 81 return RES_NOTRDY;
nyatla 5:2c7b6bd5b079 82 } else if(FATFileSystem::_ffs[drv]->disk_sync()) {
nyatla 5:2c7b6bd5b079 83 return RES_ERROR;
nyatla 5:2c7b6bd5b079 84 }
nyatla 5:2c7b6bd5b079 85 return RES_OK;
nyatla 5:2c7b6bd5b079 86 case GET_SECTOR_COUNT:
nyatla 5:2c7b6bd5b079 87 if(FATFileSystem::_ffs[drv] == NULL) {
nyatla 5:2c7b6bd5b079 88 return RES_NOTRDY;
nyatla 5:2c7b6bd5b079 89 } else {
nyatla 5:2c7b6bd5b079 90 DWORD res = FATFileSystem::_ffs[drv]->disk_sectors();
nyatla 5:2c7b6bd5b079 91 if(res > 0) {
nyatla 5:2c7b6bd5b079 92 *((DWORD*)buff) = res; // minimum allowed
nyatla 5:2c7b6bd5b079 93 return RES_OK;
nyatla 5:2c7b6bd5b079 94 } else {
nyatla 5:2c7b6bd5b079 95 return RES_ERROR;
nyatla 5:2c7b6bd5b079 96 }
nyatla 5:2c7b6bd5b079 97 }
nyatla 5:2c7b6bd5b079 98 case GET_BLOCK_SIZE:
nyatla 5:2c7b6bd5b079 99 *((DWORD*)buff) = 1; // default when not known
nyatla 5:2c7b6bd5b079 100 return RES_OK;
nyatla 5:2c7b6bd5b079 101
nyatla 5:2c7b6bd5b079 102 }
nyatla 5:2c7b6bd5b079 103 return RES_PARERR;
nyatla 5:2c7b6bd5b079 104 }