Fanny Calle / SDFileSystem

this library has few changes from the original library, for effects of this work.

Dependents:   OBC3_1_h

FATFileSystem/ChaN/diskio.cpp@0:8214896432e0, 2018-05-21 (annotated)

Committer:
FannyCalle
Date:
Mon May 21 15:10:37 2018 +0000
Revision:
0:8214896432e0
el sd hay que revisar;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
FannyCalle 0:8214896432e0 1 /*-----------------------------------------------------------------------*/
FannyCalle 0:8214896432e0 2 /* Low level disk I/O module skeleton for FatFs (C)ChaN, 2014 */
FannyCalle 0:8214896432e0 3 /*-----------------------------------------------------------------------*/
FannyCalle 0:8214896432e0 4 /* If a working storage control module is available, it should be */
FannyCalle 0:8214896432e0 5 /* attached to the FatFs via a glue function rather than modifying it. */
FannyCalle 0:8214896432e0 6 /* This is an example of glue functions to attach various exsisting */
FannyCalle 0:8214896432e0 7 /* storage control modules to the FatFs module with a defined API. */
FannyCalle 0:8214896432e0 8 /*-----------------------------------------------------------------------*/
FannyCalle 0:8214896432e0 9
FannyCalle 0:8214896432e0 10 #include "diskio.h"
FannyCalle 0:8214896432e0 11 #include "mbed_debug.h"
FannyCalle 0:8214896432e0 12 #include "FATFileSystem.h"
FannyCalle 0:8214896432e0 13
FannyCalle 0:8214896432e0 14 using namespace mbed;
FannyCalle 0:8214896432e0 15
FannyCalle 0:8214896432e0 16 /*-----------------------------------------------------------------------*/
FannyCalle 0:8214896432e0 17 /* Get Drive Status */
FannyCalle 0:8214896432e0 18 /*-----------------------------------------------------------------------*/
FannyCalle 0:8214896432e0 19
FannyCalle 0:8214896432e0 20 DSTATUS disk_status (
FannyCalle 0:8214896432e0 21 BYTE pdrv /* Physical drive nmuber to identify the drive */
FannyCalle 0:8214896432e0 22 )
FannyCalle 0:8214896432e0 23 {
FannyCalle 0:8214896432e0 24 debug_if(FFS_DBG, "disk_status on pdrv [%d]\n", pdrv);
FannyCalle 0:8214896432e0 25 return (DSTATUS)FATFileSystem::_ffs[pdrv]->disk_status();
FannyCalle 0:8214896432e0 26 }
FannyCalle 0:8214896432e0 27
FannyCalle 0:8214896432e0 28 /*-----------------------------------------------------------------------*/
FannyCalle 0:8214896432e0 29 /* Inidialize a Drive */
FannyCalle 0:8214896432e0 30 /*-----------------------------------------------------------------------*/
FannyCalle 0:8214896432e0 31
FannyCalle 0:8214896432e0 32 DSTATUS disk_initialize (
FannyCalle 0:8214896432e0 33 BYTE pdrv /* Physical drive nmuber to identify the drive */
FannyCalle 0:8214896432e0 34 )
FannyCalle 0:8214896432e0 35 {
FannyCalle 0:8214896432e0 36 debug_if(FFS_DBG, "disk_initialize on pdrv [%d]\n", pdrv);
FannyCalle 0:8214896432e0 37 return (DSTATUS)FATFileSystem::_ffs[pdrv]->disk_initialize();
FannyCalle 0:8214896432e0 38 }
FannyCalle 0:8214896432e0 39
FannyCalle 0:8214896432e0 40 /*-----------------------------------------------------------------------*/
FannyCalle 0:8214896432e0 41 /* Read Sector(s) */
FannyCalle 0:8214896432e0 42 /*-----------------------------------------------------------------------*/
FannyCalle 0:8214896432e0 43
FannyCalle 0:8214896432e0 44 DRESULT disk_read (
FannyCalle 0:8214896432e0 45 BYTE pdrv, /* Physical drive nmuber to identify the drive */
FannyCalle 0:8214896432e0 46 BYTE* buff, /* Data buffer to store read data */
FannyCalle 0:8214896432e0 47 DWORD sector, /* Sector address in LBA */
FannyCalle 0:8214896432e0 48 UINT count /* Number of sectors to read */
FannyCalle 0:8214896432e0 49 )
FannyCalle 0:8214896432e0 50 {
FannyCalle 0:8214896432e0 51 debug_if(FFS_DBG, "disk_read(sector %d, count %d) on pdrv [%d]\n", sector, count, pdrv);
FannyCalle 0:8214896432e0 52 if (FATFileSystem::_ffs[pdrv]->disk_read((uint8_t*)buff, sector, count))
FannyCalle 0:8214896432e0 53 return RES_PARERR;
FannyCalle 0:8214896432e0 54 else
FannyCalle 0:8214896432e0 55 return RES_OK;
FannyCalle 0:8214896432e0 56 }
FannyCalle 0:8214896432e0 57
FannyCalle 0:8214896432e0 58 /*-----------------------------------------------------------------------*/
FannyCalle 0:8214896432e0 59 /* Write Sector(s) */
FannyCalle 0:8214896432e0 60 /*-----------------------------------------------------------------------*/
FannyCalle 0:8214896432e0 61
FannyCalle 0:8214896432e0 62 #if _USE_WRITE
FannyCalle 0:8214896432e0 63 DRESULT disk_write (
FannyCalle 0:8214896432e0 64 BYTE pdrv, /* Physical drive nmuber to identify the drive */
FannyCalle 0:8214896432e0 65 const BYTE* buff, /* Data to be written */
FannyCalle 0:8214896432e0 66 DWORD sector, /* Sector address in LBA */
FannyCalle 0:8214896432e0 67 UINT count /* Number of sectors to write */
FannyCalle 0:8214896432e0 68 )
FannyCalle 0:8214896432e0 69 {
FannyCalle 0:8214896432e0 70 debug_if(FFS_DBG, "disk_write(sector %d, count %d) on pdrv [%d]\n", sector, count, pdrv);
FannyCalle 0:8214896432e0 71 if (FATFileSystem::_ffs[pdrv]->disk_write((uint8_t*)buff, sector, count))
FannyCalle 0:8214896432e0 72 return RES_PARERR;
FannyCalle 0:8214896432e0 73 else
FannyCalle 0:8214896432e0 74 return RES_OK;
FannyCalle 0:8214896432e0 75 }
FannyCalle 0:8214896432e0 76 #endif
FannyCalle 0:8214896432e0 77
FannyCalle 0:8214896432e0 78 /*-----------------------------------------------------------------------*/
FannyCalle 0:8214896432e0 79 /* Miscellaneous Functions */
FannyCalle 0:8214896432e0 80 /*-----------------------------------------------------------------------*/
FannyCalle 0:8214896432e0 81
FannyCalle 0:8214896432e0 82 #if _USE_IOCTL
FannyCalle 0:8214896432e0 83 DRESULT disk_ioctl (
FannyCalle 0:8214896432e0 84 BYTE pdrv, /* Physical drive nmuber (0..) */
FannyCalle 0:8214896432e0 85 BYTE cmd, /* Control code */
FannyCalle 0:8214896432e0 86 void* buff /* Buffer to send/receive control data */
FannyCalle 0:8214896432e0 87 )
FannyCalle 0:8214896432e0 88 {
FannyCalle 0:8214896432e0 89 debug_if(FFS_DBG, "disk_ioctl(%d)\n", cmd);
FannyCalle 0:8214896432e0 90 switch(cmd) {
FannyCalle 0:8214896432e0 91 case CTRL_SYNC:
FannyCalle 0:8214896432e0 92 if(FATFileSystem::_ffs[pdrv] == NULL) {
FannyCalle 0:8214896432e0 93 return RES_NOTRDY;
FannyCalle 0:8214896432e0 94 } else if(FATFileSystem::_ffs[pdrv]->disk_sync()) {
FannyCalle 0:8214896432e0 95 return RES_ERROR;
FannyCalle 0:8214896432e0 96 }
FannyCalle 0:8214896432e0 97 return RES_OK;
FannyCalle 0:8214896432e0 98 case GET_SECTOR_COUNT:
FannyCalle 0:8214896432e0 99 if(FATFileSystem::_ffs[pdrv] == NULL) {
FannyCalle 0:8214896432e0 100 return RES_NOTRDY;
FannyCalle 0:8214896432e0 101 } else {
FannyCalle 0:8214896432e0 102 DWORD res = FATFileSystem::_ffs[pdrv]->disk_sectors();
FannyCalle 0:8214896432e0 103 if(res > 0) {
FannyCalle 0:8214896432e0 104 *((DWORD*)buff) = res; // minimum allowed
FannyCalle 0:8214896432e0 105 return RES_OK;
FannyCalle 0:8214896432e0 106 } else {
FannyCalle 0:8214896432e0 107 return RES_ERROR;
FannyCalle 0:8214896432e0 108 }
FannyCalle 0:8214896432e0 109 }
FannyCalle 0:8214896432e0 110 case GET_BLOCK_SIZE:
FannyCalle 0:8214896432e0 111 *((DWORD*)buff) = 1; // default when not known
FannyCalle 0:8214896432e0 112 return RES_OK;
FannyCalle 0:8214896432e0 113
FannyCalle 0:8214896432e0 114 }
FannyCalle 0:8214896432e0 115 return RES_PARERR;
FannyCalle 0:8214896432e0 116 }
FannyCalle 0:8214896432e0 117 #endif