Simon Ford / Mbed 2 deprecated fat

Dependencies:   mbed

FATFileSystem.cpp@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 /* mbed Microcontroller Library - FATFileSystem
simon 0:560a6744936c 2 * Copyright (c) 2008, sford
simon 0:560a6744936c 3 */
simon 0:560a6744936c 4
simon 0:560a6744936c 5 #include "FATFileSystem.h"
simon 0:560a6744936c 6
simon 0:560a6744936c 7 #include "mbed.h"
simon 0:560a6744936c 8
simon 0:560a6744936c 9 #include "FileSystemLike.h"
simon 0:560a6744936c 10 #include "FATFileHandle.h"
simon 0:560a6744936c 11 #include "FATDirHandle.h"
simon 0:560a6744936c 12 #include "ff.h"
simon 0:560a6744936c 13 //#include "Debug.h"
simon 0:560a6744936c 14 #include <stdio.h>
simon 0:560a6744936c 15 #include <stdlib.h>
simon 0:560a6744936c 16
simon 0:560a6744936c 17 DWORD get_fattime (void) {
simon 0:560a6744936c 18 return 999;
simon 0:560a6744936c 19 }
simon 0:560a6744936c 20
simon 0:560a6744936c 21 namespace mbed {
simon 0:560a6744936c 22
simon 0:560a6744936c 23 #if FFSDEBUG_ENABLED
simon 0:560a6744936c 24 static const char *FR_ERRORS[] = {
simon 0:560a6744936c 25 "FR_OK = 0",
simon 0:560a6744936c 26 "FR_NOT_READY",
simon 0:560a6744936c 27 "FR_NO_FILE",
simon 0:560a6744936c 28 "FR_NO_PATH",
simon 0:560a6744936c 29 "FR_INVALID_NAME",
simon 0:560a6744936c 30 "FR_INVALID_DRIVE",
simon 0:560a6744936c 31 "FR_DENIED",
simon 0:560a6744936c 32 "FR_EXIST",
simon 0:560a6744936c 33 "FR_RW_ERROR",
simon 0:560a6744936c 34 "FR_WRITE_PROTECTED",
simon 0:560a6744936c 35 "FR_NOT_ENABLED",
simon 0:560a6744936c 36 "FR_NO_FILESYSTEM",
simon 0:560a6744936c 37 "FR_INVALID_OBJECT",
simon 0:560a6744936c 38 "FR_MKFS_ABORTED"
simon 0:560a6744936c 39 };
simon 0:560a6744936c 40 #endif
simon 0:560a6744936c 41
simon 0:560a6744936c 42 FATFileSystem *FATFileSystem::_ffs[_DRIVES] = {0};
simon 0:560a6744936c 43
simon 0:560a6744936c 44 FATFileSystem::FATFileSystem(const char* n) : FileSystemLike(n) {
simon 0:560a6744936c 45 FFSDEBUG("FATFileSystem(%s)\n", n);
simon 0:560a6744936c 46 for(int i=0; i<_DRIVES; i++) {
simon 0:560a6744936c 47 if(_ffs[i] == 0) {
simon 0:560a6744936c 48 _ffs[i] = this;
simon 0:560a6744936c 49 _fsid = i;
simon 0:560a6744936c 50 FFSDEBUG("Mounting [%s] on ffs drive [%d]\n", _name, _fsid);
simon 0:560a6744936c 51 f_mount(i, &_fs);
simon 0:560a6744936c 52 return;
simon 0:560a6744936c 53 }
simon 0:560a6744936c 54 }
simon 0:560a6744936c 55 error("Couldn't create %s in FATFileSystem::FATFileSystem\n",n);
simon 0:560a6744936c 56 }
simon 0:560a6744936c 57
simon 0:560a6744936c 58 FATFileSystem::~FATFileSystem() {
simon 0:560a6744936c 59 for(int i=0; i<_DRIVES; i++) {
simon 0:560a6744936c 60 if(_ffs[i] == this) {
simon 0:560a6744936c 61 _ffs[i] = 0;
simon 0:560a6744936c 62 f_mount(i, NULL);
simon 0:560a6744936c 63 }
simon 0:560a6744936c 64 }
simon 0:560a6744936c 65 }
simon 0:560a6744936c 66
simon 0:560a6744936c 67 FileHandle *FATFileSystem::open(const char* name, int flags) {
simon 0:560a6744936c 68 FFSDEBUG("open(%s) on filesystem [%s], drv [%d]\n", name, _name, _fsid);
simon 0:560a6744936c 69 char n[64];
simon 0:560a6744936c 70 sprintf(n, "%d:/%s", _fsid, name);
simon 0:560a6744936c 71
simon 0:560a6744936c 72 /* POSIX flags -> FatFS open mode */
simon 0:560a6744936c 73 BYTE openmode;
simon 0:560a6744936c 74 if(flags & O_RDWR) {
simon 0:560a6744936c 75 openmode = FA_READ|FA_WRITE;
simon 0:560a6744936c 76 } else if(flags & O_WRONLY) {
simon 0:560a6744936c 77 openmode = FA_WRITE;
simon 0:560a6744936c 78 } else {
simon 0:560a6744936c 79 openmode = FA_READ;
simon 0:560a6744936c 80 }
simon 0:560a6744936c 81 if(flags & O_CREAT) {
simon 0:560a6744936c 82 if(flags & O_TRUNC) {
simon 0:560a6744936c 83 openmode |= FA_CREATE_ALWAYS;
simon 0:560a6744936c 84 } else {
simon 0:560a6744936c 85 openmode |= FA_OPEN_ALWAYS;
simon 0:560a6744936c 86 }
simon 0:560a6744936c 87 }
simon 0:560a6744936c 88
simon 0:560a6744936c 89 FIL fh;
simon 0:560a6744936c 90 FRESULT res = f_open(&fh, n, openmode);
simon 0:560a6744936c 91 if(res) {
simon 0:560a6744936c 92 FFSDEBUG("f_open('w') failed (%d, %s)\n", res, FR_ERRORS[res]);
simon 0:560a6744936c 93 return NULL;
simon 0:560a6744936c 94 }
simon 0:560a6744936c 95 if(flags & O_APPEND) {
simon 0:560a6744936c 96 f_lseek(&fh, fh.fsize);
simon 0:560a6744936c 97 }
simon 0:560a6744936c 98 return new FATFileHandle(fh);
simon 0:560a6744936c 99 }
simon 0:560a6744936c 100
simon 0:560a6744936c 101 int FATFileSystem::remove(const char *filename) {
simon 0:560a6744936c 102 FRESULT res = f_unlink(filename);
simon 0:560a6744936c 103 if(res) {
simon 0:560a6744936c 104 FFSDEBUG("f_unlink() failed (%d, %s)\n", res, FR_ERRORS[res]);
simon 0:560a6744936c 105 return -1;
simon 0:560a6744936c 106 }
simon 0:560a6744936c 107 return 0;
simon 0:560a6744936c 108 }
simon 0:560a6744936c 109
simon 0:560a6744936c 110 int FATFileSystem::format() {
simon 0:560a6744936c 111 FFSDEBUG("format()\n");
simon 0:560a6744936c 112 FRESULT res = f_mkfs(_fsid, 0, 512); // Logical drive number, Partitioning rule, Allocation unit size (bytes per cluster)
simon 0:560a6744936c 113 if(res) {
simon 0:560a6744936c 114 FFSDEBUG("f_mkfs() failed (%d, %s)\n", res, FR_ERRORS[res]);
simon 0:560a6744936c 115 return -1;
simon 0:560a6744936c 116 }
simon 0:560a6744936c 117 return 0;
simon 0:560a6744936c 118 }
simon 0:560a6744936c 119
simon 0:560a6744936c 120 DirHandle *FATFileSystem::opendir(const char *name) {
simon 0:560a6744936c 121 FATFS_DIR dir;
simon 0:560a6744936c 122 FRESULT res = f_opendir(&dir, name);
simon 0:560a6744936c 123 if(res != 0) {
simon 0:560a6744936c 124 return NULL;
simon 0:560a6744936c 125 }
simon 0:560a6744936c 126 return new FATDirHandle(dir);
simon 0:560a6744936c 127 }
simon 0:560a6744936c 128
simon 0:560a6744936c 129 int FATFileSystem::mkdir(const char *name, mode_t mode) {
simon 0:560a6744936c 130 FRESULT res = f_mkdir(name);
simon 0:560a6744936c 131 return res == 0 ? 0 : -1;
simon 0:560a6744936c 132 }
simon 0:560a6744936c 133
simon 0:560a6744936c 134 } // namespace mbed