Simon Ford / Mbed 2 deprecated fat

Dependencies:   mbed

diskio.c@1:208803a150b2, 2012-01-12 (annotated)

Committer:
simon
Date:
Thu Jan 12 12:59:33 2012 +0000
Revision:
1:208803a150b2
Parent:
0:560a6744936c 
fix on line 61 of diskio, sector -> s

Who changed what in which revision?

UserRevisionLine numberNew contents of line
simon 0:560a6744936c 1 /*-----------------------------------------------------------------------*/
simon 0:560a6744936c 2 /* Low level disk I/O module skeleton for FatFs (C)ChaN, 2007 */
simon 0:560a6744936c 3 /*-----------------------------------------------------------------------*/
simon 0:560a6744936c 4 /* This is a stub disk I/O module that acts as front end of the existing */
simon 0:560a6744936c 5 /* disk I/O modules and attach it to FatFs module with common interface. */
simon 0:560a6744936c 6 /*-----------------------------------------------------------------------*/
simon 0:560a6744936c 7
simon 0:560a6744936c 8 #include "diskio.h"
simon 0:560a6744936c 9 #include <stdio.h>
simon 0:560a6744936c 10 #include <string.h>
simon 0:560a6744936c 11 #include "FATFileSystem.h"
simon 0:560a6744936c 12
simon 0:560a6744936c 13 #include "mbed.h"
simon 0:560a6744936c 14
simon 0:560a6744936c 15 DSTATUS disk_initialize (
simon 1:208803a150b2 16 BYTE drv /* Physical drive nmuber (0..) */
simon 0:560a6744936c 17 )
simon 0:560a6744936c 18 {
simon 1:208803a150b2 19 FFSDEBUG("disk_initialize on drv [%d]\n", drv);
simon 1:208803a150b2 20 return (DSTATUS)FATFileSystem::_ffs[drv]->disk_initialize();
simon 0:560a6744936c 21 }
simon 0:560a6744936c 22
simon 0:560a6744936c 23 DSTATUS disk_status (
simon 1:208803a150b2 24 BYTE drv /* Physical drive nmuber (0..) */
simon 0:560a6744936c 25 )
simon 0:560a6744936c 26 {
simon 1:208803a150b2 27 FFSDEBUG("disk_status on drv [%d]\n", drv);
simon 1:208803a150b2 28 return (DSTATUS)FATFileSystem::_ffs[drv]->disk_status();
simon 0:560a6744936c 29 }
simon 0:560a6744936c 30
simon 0:560a6744936c 31 DRESULT disk_read (
simon 1:208803a150b2 32 BYTE drv, /* Physical drive nmuber (0..) */
simon 1:208803a150b2 33 BYTE *buff, /* Data buffer to store read data */
simon 1:208803a150b2 34 DWORD sector, /* Sector address (LBA) */
simon 1:208803a150b2 35 BYTE count /* Number of sectors to read (1..255) */
simon 0:560a6744936c 36 )
simon 0:560a6744936c 37 {
simon 1:208803a150b2 38 FFSDEBUG("disk_read(sector %d, count %d) on drv [%d]\n", sector, count, drv);
simon 1:208803a150b2 39 for(int s=sector; s<sector+count; s++) {
simon 1:208803a150b2 40 FFSDEBUG(" disk_read(sector %d)\n", s);
simon 1:208803a150b2 41 int res = FATFileSystem::_ffs[drv]->disk_read((char*)buff, s);
simon 1:208803a150b2 42 if(res) {
simon 1:208803a150b2 43 return RES_PARERR;
simon 1:208803a150b2 44 }
simon 1:208803a150b2 45 buff += 512;
simon 1:208803a150b2 46 }
simon 1:208803a150b2 47 return RES_OK;
simon 0:560a6744936c 48 }
simon 0:560a6744936c 49
simon 0:560a6744936c 50 #if _READONLY == 0
simon 0:560a6744936c 51 DRESULT disk_write (
simon 1:208803a150b2 52 BYTE drv, /* Physical drive nmuber (0..) */
simon 1:208803a150b2 53 const BYTE *buff, /* Data to be written */
simon 1:208803a150b2 54 DWORD sector, /* Sector address (LBA) */
simon 1:208803a150b2 55 BYTE count /* Number of sectors to write (1..255) */
simon 0:560a6744936c 56 )
simon 0:560a6744936c 57 {
simon 1:208803a150b2 58 FFSDEBUG("disk_write(sector %d, count %d) on drv [%d]\n", sector, count, drv);
simon 1:208803a150b2 59 for(int s=sector; s<sector+count; s++) {
simon 1:208803a150b2 60 FFSDEBUG(" disk_write(sector %d)\n", s);
simon 1:208803a150b2 61 int res = FATFileSystem::_ffs[drv]->disk_write((char*)buff, s);
simon 1:208803a150b2 62 if(res) {
simon 1:208803a150b2 63 return RES_PARERR;
simon 1:208803a150b2 64 }
simon 1:208803a150b2 65 buff += 512;
simon 1:208803a150b2 66 }
simon 1:208803a150b2 67 return RES_OK;
simon 0:560a6744936c 68 }
simon 0:560a6744936c 69 #endif /* _READONLY */
simon 0:560a6744936c 70
simon 0:560a6744936c 71 DRESULT disk_ioctl (
simon 1:208803a150b2 72 BYTE drv, /* Physical drive nmuber (0..) */
simon 1:208803a150b2 73 BYTE ctrl, /* Control code */
simon 1:208803a150b2 74 void *buff /* Buffer to send/receive control data */
simon 0:560a6744936c 75 )
simon 0:560a6744936c 76 {
simon 1:208803a150b2 77 FFSDEBUG("disk_ioctl(%d)\n", ctrl);
simon 1:208803a150b2 78 switch(ctrl) {
simon 1:208803a150b2 79 case CTRL_SYNC:
simon 1:208803a150b2 80 if(FATFileSystem::_ffs[drv] == NULL) {
simon 1:208803a150b2 81 return RES_NOTRDY;
simon 1:208803a150b2 82 } else if(FATFileSystem::_ffs[drv]->disk_sync()) {
simon 1:208803a150b2 83 return RES_ERROR;
simon 1:208803a150b2 84 }
simon 1:208803a150b2 85 return RES_OK;
simon 1:208803a150b2 86 case GET_SECTOR_COUNT:
simon 1:208803a150b2 87 if(FATFileSystem::_ffs[drv] == NULL) {
simon 1:208803a150b2 88 return RES_NOTRDY;
simon 1:208803a150b2 89 } else {
simon 1:208803a150b2 90 int res = FATFileSystem::_ffs[drv]->disk_sectors();
simon 1:208803a150b2 91 if(res > 0) {
simon 1:208803a150b2 92 *((DWORD*)buff) = res; // minimum allowed
simon 1:208803a150b2 93 return RES_OK;
simon 1:208803a150b2 94 } else {
simon 1:208803a150b2 95 return RES_ERROR;
simon 1:208803a150b2 96 }
simon 1:208803a150b2 97 }
simon 1:208803a150b2 98 case GET_BLOCK_SIZE:
simon 1:208803a150b2 99 *((DWORD*)buff) = 1; // default when not known
simon 1:208803a150b2 100 return RES_OK;
simon 0:560a6744936c 101
simon 1:208803a150b2 102 }
simon 1:208803a150b2 103 return RES_PARERR;
simon 0:560a6744936c 104 }
simon 0:560a6744936c 105