ahmed ahmed / Mbed 2 deprecated samir2_alti_logger

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Dependencies:   C12832 mbed

FileSystem/FatFileSystem/diskio.cpp@0:caecb0d1e7d3, 2015-04-08 (annotated)

Committer:
pfe
Date:
Wed Apr 08 08:27:55 2015 +0000
Revision:
0:caecb0d1e7d3
ddd

Who changed what in which revision?

UserRevisionLine numberNew contents of line
pfe 0:caecb0d1e7d3 1 /*-----------------------------------------------------------------------*/
pfe 0:caecb0d1e7d3 2 /* Low level disk I/O module skeleton for FatFs (C)ChaN, 2007 */
pfe 0:caecb0d1e7d3 3 /*-----------------------------------------------------------------------*/
pfe 0:caecb0d1e7d3 4 /* This is a stub disk I/O module that acts as front end of the existing */
pfe 0:caecb0d1e7d3 5 /* disk I/O modules and attach it to FatFs module with common interface. */
pfe 0:caecb0d1e7d3 6 /*-----------------------------------------------------------------------*/
pfe 0:caecb0d1e7d3 7
pfe 0:caecb0d1e7d3 8 #include "diskio.h"
pfe 0:caecb0d1e7d3 9 #include <stdio.h>
pfe 0:caecb0d1e7d3 10 #include <string.h>
pfe 0:caecb0d1e7d3 11 #include "FATFileSystem.h"
pfe 0:caecb0d1e7d3 12
pfe 0:caecb0d1e7d3 13 #include "mbed.h"
pfe 0:caecb0d1e7d3 14
pfe 0:caecb0d1e7d3 15 DSTATUS disk_initialize (
pfe 0:caecb0d1e7d3 16 BYTE drv /* Physical drive nmuber (0..) */
pfe 0:caecb0d1e7d3 17 )
pfe 0:caecb0d1e7d3 18 {
pfe 0:caecb0d1e7d3 19 FFSDEBUG("disk_initialize on drv [%d]\n", drv);
pfe 0:caecb0d1e7d3 20 return (DSTATUS)FATFileSystem::_ffs[drv]->disk_initialize();
pfe 0:caecb0d1e7d3 21 }
pfe 0:caecb0d1e7d3 22
pfe 0:caecb0d1e7d3 23 DSTATUS disk_status (
pfe 0:caecb0d1e7d3 24 BYTE drv /* Physical drive nmuber (0..) */
pfe 0:caecb0d1e7d3 25 )
pfe 0:caecb0d1e7d3 26 {
pfe 0:caecb0d1e7d3 27 FFSDEBUG("disk_status on drv [%d]\n", drv);
pfe 0:caecb0d1e7d3 28 return (DSTATUS)FATFileSystem::_ffs[drv]->disk_status();
pfe 0:caecb0d1e7d3 29 }
pfe 0:caecb0d1e7d3 30
pfe 0:caecb0d1e7d3 31 DRESULT disk_read (
pfe 0:caecb0d1e7d3 32 BYTE drv, /* Physical drive nmuber (0..) */
pfe 0:caecb0d1e7d3 33 BYTE *buff, /* Data buffer to store read data */
pfe 0:caecb0d1e7d3 34 DWORD sector, /* Sector address (LBA) */
pfe 0:caecb0d1e7d3 35 BYTE count /* Number of sectors to read (1..255) */
pfe 0:caecb0d1e7d3 36 )
pfe 0:caecb0d1e7d3 37 {
pfe 0:caecb0d1e7d3 38 FFSDEBUG("disk_read(sector %d, count %d) on drv [%d]\n", sector, count, drv);
pfe 0:caecb0d1e7d3 39 for(DWORD s=sector; s<sector+count; s++) {
pfe 0:caecb0d1e7d3 40 FFSDEBUG(" disk_read(sector %d)\n", s);
pfe 0:caecb0d1e7d3 41 int res = FATFileSystem::_ffs[drv]->disk_read((char*)buff, s);
pfe 0:caecb0d1e7d3 42 if(res) {
pfe 0:caecb0d1e7d3 43 return RES_PARERR;
pfe 0:caecb0d1e7d3 44 }
pfe 0:caecb0d1e7d3 45 buff += 512;
pfe 0:caecb0d1e7d3 46 }
pfe 0:caecb0d1e7d3 47 return RES_OK;
pfe 0:caecb0d1e7d3 48 }
pfe 0:caecb0d1e7d3 49
pfe 0:caecb0d1e7d3 50 #if _READONLY == 0
pfe 0:caecb0d1e7d3 51 DRESULT disk_write (
pfe 0:caecb0d1e7d3 52 BYTE drv, /* Physical drive nmuber (0..) */
pfe 0:caecb0d1e7d3 53 const BYTE *buff, /* Data to be written */
pfe 0:caecb0d1e7d3 54 DWORD sector, /* Sector address (LBA) */
pfe 0:caecb0d1e7d3 55 BYTE count /* Number of sectors to write (1..255) */
pfe 0:caecb0d1e7d3 56 )
pfe 0:caecb0d1e7d3 57 {
pfe 0:caecb0d1e7d3 58 FFSDEBUG("disk_write(sector %d, count %d) on drv [%d]\n", sector, count, drv);
pfe 0:caecb0d1e7d3 59 for(DWORD s=sector; s<sector+count; s++) {
pfe 0:caecb0d1e7d3 60 FFSDEBUG(" disk_write(sector %d)\n", s);
pfe 0:caecb0d1e7d3 61 int res = FATFileSystem::_ffs[drv]->disk_write((char*)buff, s);
pfe 0:caecb0d1e7d3 62 if(res) {
pfe 0:caecb0d1e7d3 63 return RES_PARERR;
pfe 0:caecb0d1e7d3 64 }
pfe 0:caecb0d1e7d3 65 buff += 512;
pfe 0:caecb0d1e7d3 66 }
pfe 0:caecb0d1e7d3 67 return RES_OK;
pfe 0:caecb0d1e7d3 68 }
pfe 0:caecb0d1e7d3 69 #endif /* _READONLY */
pfe 0:caecb0d1e7d3 70
pfe 0:caecb0d1e7d3 71 DRESULT disk_ioctl (
pfe 0:caecb0d1e7d3 72 BYTE drv, /* Physical drive nmuber (0..) */
pfe 0:caecb0d1e7d3 73 BYTE ctrl, /* Control code */
pfe 0:caecb0d1e7d3 74 void *buff /* Buffer to send/receive control data */
pfe 0:caecb0d1e7d3 75 )
pfe 0:caecb0d1e7d3 76 {
pfe 0:caecb0d1e7d3 77 FFSDEBUG("disk_ioctl(%d)\n", ctrl);
pfe 0:caecb0d1e7d3 78 switch(ctrl) {
pfe 0:caecb0d1e7d3 79 case CTRL_SYNC:
pfe 0:caecb0d1e7d3 80 if(FATFileSystem::_ffs[drv] == NULL) {
pfe 0:caecb0d1e7d3 81 return RES_NOTRDY;
pfe 0:caecb0d1e7d3 82 } else if(FATFileSystem::_ffs[drv]->disk_sync()) {
pfe 0:caecb0d1e7d3 83 return RES_ERROR;
pfe 0:caecb0d1e7d3 84 }
pfe 0:caecb0d1e7d3 85 return RES_OK;
pfe 0:caecb0d1e7d3 86 case GET_SECTOR_COUNT:
pfe 0:caecb0d1e7d3 87 if(FATFileSystem::_ffs[drv] == NULL) {
pfe 0:caecb0d1e7d3 88 return RES_NOTRDY;
pfe 0:caecb0d1e7d3 89 } else {
pfe 0:caecb0d1e7d3 90 int res = FATFileSystem::_ffs[drv]->disk_sectors();
pfe 0:caecb0d1e7d3 91 if(res > 0) {
pfe 0:caecb0d1e7d3 92 *((DWORD*)buff) = res; // minimum allowed
pfe 0:caecb0d1e7d3 93 return RES_OK;
pfe 0:caecb0d1e7d3 94 } else {
pfe 0:caecb0d1e7d3 95 return RES_ERROR;
pfe 0:caecb0d1e7d3 96 }
pfe 0:caecb0d1e7d3 97 }
pfe 0:caecb0d1e7d3 98 case GET_BLOCK_SIZE:
pfe 0:caecb0d1e7d3 99 *((DWORD*)buff) = 1; // default when not known
pfe 0:caecb0d1e7d3 100 return RES_OK;
pfe 0:caecb0d1e7d3 101
pfe 0:caecb0d1e7d3 102 }
pfe 0:caecb0d1e7d3 103 return RES_PARERR;
pfe 0:caecb0d1e7d3 104 }
pfe 0:caecb0d1e7d3 105