Murat Kilivan / S25FL216K_FATFileSystem

Implementation of a LocalFileSystem using S25FL216K serial flash memory. Currently only 256kB available!

Dependencies:   FATFileSystem S25FL216K

Dependents:   S25FL216K_LocalFileSystem

Fork of S25FL216K_USBFileSystem by Murat Kilivan

FATFileSystem/ChaN/diskio.cpp@5:c8918e47c566, 2014-12-23 (annotated)

Committer:
mkilivan
Date:
Tue Dec 23 21:36:32 2014 +0000
Revision:
5:c8918e47c566
initial commit

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mkilivan 5:c8918e47c566 1 /*-----------------------------------------------------------------------*/
mkilivan 5:c8918e47c566 2 /* Low level disk I/O module skeleton for FatFs (C)ChaN, 2007 */
mkilivan 5:c8918e47c566 3 /*-----------------------------------------------------------------------*/
mkilivan 5:c8918e47c566 4 /* This is a stub disk I/O module that acts as front end of the existing */
mkilivan 5:c8918e47c566 5 /* disk I/O modules and attach it to FatFs module with common interface. */
mkilivan 5:c8918e47c566 6 /*-----------------------------------------------------------------------*/
mkilivan 5:c8918e47c566 7 #include "ffconf.h"
mkilivan 5:c8918e47c566 8 #include "diskio.h"
mkilivan 5:c8918e47c566 9
mkilivan 5:c8918e47c566 10 #include "mbed_debug.h"
mkilivan 5:c8918e47c566 11 #include "FATFileSystem.h"
mkilivan 5:c8918e47c566 12
mkilivan 5:c8918e47c566 13 using namespace mbed;
mkilivan 5:c8918e47c566 14
mkilivan 5:c8918e47c566 15 DSTATUS disk_initialize (
mkilivan 5:c8918e47c566 16 BYTE drv /* Physical drive nmuber (0..) */
mkilivan 5:c8918e47c566 17 )
mkilivan 5:c8918e47c566 18 {
mkilivan 5:c8918e47c566 19 debug_if(FFS_DBG, "disk_initialize on drv [%d]\n", drv);
mkilivan 5:c8918e47c566 20 return (DSTATUS)FATFileSystem::_ffs[drv]->disk_initialize();
mkilivan 5:c8918e47c566 21 }
mkilivan 5:c8918e47c566 22
mkilivan 5:c8918e47c566 23 DSTATUS disk_status (
mkilivan 5:c8918e47c566 24 BYTE drv /* Physical drive nmuber (0..) */
mkilivan 5:c8918e47c566 25 )
mkilivan 5:c8918e47c566 26 {
mkilivan 5:c8918e47c566 27 debug_if(FFS_DBG, "disk_status on drv [%d]\n", drv);
mkilivan 5:c8918e47c566 28 return (DSTATUS)FATFileSystem::_ffs[drv]->disk_status();
mkilivan 5:c8918e47c566 29 }
mkilivan 5:c8918e47c566 30
mkilivan 5:c8918e47c566 31 DRESULT disk_read (
mkilivan 5:c8918e47c566 32 BYTE drv, /* Physical drive nmuber (0..) */
mkilivan 5:c8918e47c566 33 BYTE *buff, /* Data buffer to store read data */
mkilivan 5:c8918e47c566 34 DWORD sector, /* Sector address (LBA) */
mkilivan 5:c8918e47c566 35 BYTE count /* Number of sectors to read (1..255) */
mkilivan 5:c8918e47c566 36 )
mkilivan 5:c8918e47c566 37 {
mkilivan 5:c8918e47c566 38 debug_if(FFS_DBG, "disk_read(sector %d, count %d) on drv [%d]\n", sector, count, drv);
mkilivan 5:c8918e47c566 39 for(DWORD s=sector; s<sector+count; s++) {
mkilivan 5:c8918e47c566 40 debug_if(FFS_DBG, " disk_read(sector %d)\n", s);
mkilivan 5:c8918e47c566 41 int res = FATFileSystem::_ffs[drv]->disk_read((uint8_t*)buff, s);
mkilivan 5:c8918e47c566 42 if(res) {
mkilivan 5:c8918e47c566 43 return RES_PARERR;
mkilivan 5:c8918e47c566 44 }
mkilivan 5:c8918e47c566 45 buff += 512;
mkilivan 5:c8918e47c566 46 }
mkilivan 5:c8918e47c566 47 return RES_OK;
mkilivan 5:c8918e47c566 48 }
mkilivan 5:c8918e47c566 49
mkilivan 5:c8918e47c566 50 #if _READONLY == 0
mkilivan 5:c8918e47c566 51 DRESULT disk_write (
mkilivan 5:c8918e47c566 52 BYTE drv, /* Physical drive nmuber (0..) */
mkilivan 5:c8918e47c566 53 const BYTE *buff, /* Data to be written */
mkilivan 5:c8918e47c566 54 DWORD sector, /* Sector address (LBA) */
mkilivan 5:c8918e47c566 55 BYTE count /* Number of sectors to write (1..255) */
mkilivan 5:c8918e47c566 56 )
mkilivan 5:c8918e47c566 57 {
mkilivan 5:c8918e47c566 58 debug_if(FFS_DBG, "disk_write(sector %d, count %d) on drv [%d]\n", sector, count, drv);
mkilivan 5:c8918e47c566 59 for(DWORD s = sector; s < sector + count; s++) {
mkilivan 5:c8918e47c566 60 debug_if(FFS_DBG, " disk_write(sector %d)\n", s);
mkilivan 5:c8918e47c566 61 int res = FATFileSystem::_ffs[drv]->disk_write((uint8_t*)buff, s);
mkilivan 5:c8918e47c566 62 if(res) {
mkilivan 5:c8918e47c566 63 return RES_PARERR;
mkilivan 5:c8918e47c566 64 }
mkilivan 5:c8918e47c566 65 buff += 512;
mkilivan 5:c8918e47c566 66 }
mkilivan 5:c8918e47c566 67 return RES_OK;
mkilivan 5:c8918e47c566 68 }
mkilivan 5:c8918e47c566 69 #endif /* _READONLY */
mkilivan 5:c8918e47c566 70
mkilivan 5:c8918e47c566 71 DRESULT disk_ioctl (
mkilivan 5:c8918e47c566 72 BYTE drv, /* Physical drive nmuber (0..) */
mkilivan 5:c8918e47c566 73 BYTE ctrl, /* Control code */
mkilivan 5:c8918e47c566 74 void *buff /* Buffer to send/receive control data */
mkilivan 5:c8918e47c566 75 )
mkilivan 5:c8918e47c566 76 {
mkilivan 5:c8918e47c566 77 debug_if(FFS_DBG, "disk_ioctl(%d)\n", ctrl);
mkilivan 5:c8918e47c566 78 switch(ctrl) {
mkilivan 5:c8918e47c566 79 case CTRL_SYNC:
mkilivan 5:c8918e47c566 80 if(FATFileSystem::_ffs[drv] == NULL) {
mkilivan 5:c8918e47c566 81 return RES_NOTRDY;
mkilivan 5:c8918e47c566 82 } else if(FATFileSystem::_ffs[drv]->disk_sync()) {
mkilivan 5:c8918e47c566 83 return RES_ERROR;
mkilivan 5:c8918e47c566 84 }
mkilivan 5:c8918e47c566 85 return RES_OK;
mkilivan 5:c8918e47c566 86 case GET_SECTOR_COUNT:
mkilivan 5:c8918e47c566 87 if(FATFileSystem::_ffs[drv] == NULL) {
mkilivan 5:c8918e47c566 88 return RES_NOTRDY;
mkilivan 5:c8918e47c566 89 } else {
mkilivan 5:c8918e47c566 90 DWORD res = FATFileSystem::_ffs[drv]->disk_sectors();
mkilivan 5:c8918e47c566 91 if(res > 0) {
mkilivan 5:c8918e47c566 92 *((DWORD*)buff) = res; // minimum allowed
mkilivan 5:c8918e47c566 93 return RES_OK;
mkilivan 5:c8918e47c566 94 } else {
mkilivan 5:c8918e47c566 95 return RES_ERROR;
mkilivan 5:c8918e47c566 96 }
mkilivan 5:c8918e47c566 97 }
mkilivan 5:c8918e47c566 98 case GET_BLOCK_SIZE:
mkilivan 5:c8918e47c566 99 *((DWORD*)buff) = 1; // default when not known
mkilivan 5:c8918e47c566 100 return RES_OK;
mkilivan 5:c8918e47c566 101
mkilivan 5:c8918e47c566 102 }
mkilivan 5:c8918e47c566 103 return RES_PARERR;
mkilivan 5:c8918e47c566 104 }