Norimasa Okamoto / F32RFileSystem

Important changes to repositories hosted on mbed.com

Mbed hosted mercurial repositories are deprecated and are due to be permanently deleted in July 2026.

To keep a copy of this software download the repository Zip archive or clone locally using Mercurial.

It is also possible to export all your personal repositories from the account settings page.

Fork of F12RFileSystem by Norimasa Okamoto

F12RFileSystem.cpp@6:3c5b3606e019, 2015-10-31 (annotated)

Committer:
va009039
Date:
Sat Oct 31 00:30:21 2015 +0000
Revision:
6:3c5b3606e019
Parent:
FATFileSystem.cpp@5:b3b3370574cf
Child:
7:f9f52d9c0c57
fork from FATFileSystem

Who changed what in which revision?

UserRevisionLine numberNew contents of line
emilmont 1:46ce1e16c870 1 /* mbed Microcontroller Library
va009039 6:3c5b3606e019 2 * Copyright (c) 2006-2015 ARM Limited
emilmont 1:46ce1e16c870 3 *
emilmont 1:46ce1e16c870 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
emilmont 1:46ce1e16c870 5 * of this software and associated documentation files (the "Software"), to deal
emilmont 1:46ce1e16c870 6 * in the Software without restriction, including without limitation the rights
emilmont 1:46ce1e16c870 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
emilmont 1:46ce1e16c870 8 * copies of the Software, and to permit persons to whom the Software is
emilmont 1:46ce1e16c870 9 * furnished to do so, subject to the following conditions:
emilmont 1:46ce1e16c870 10 *
emilmont 1:46ce1e16c870 11 * The above copyright notice and this permission notice shall be included in
emilmont 1:46ce1e16c870 12 * all copies or substantial portions of the Software.
emilmont 1:46ce1e16c870 13 *
emilmont 1:46ce1e16c870 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
emilmont 1:46ce1e16c870 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
emilmont 1:46ce1e16c870 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
emilmont 1:46ce1e16c870 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
emilmont 1:46ce1e16c870 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
emilmont 1:46ce1e16c870 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
emilmont 1:46ce1e16c870 20 * SOFTWARE.
emilmont 1:46ce1e16c870 21 */
emilmont 1:46ce1e16c870 22 #include "mbed.h"
emilmont 1:46ce1e16c870 23
emilmont 1:46ce1e16c870 24 #include "ffconf.h"
emilmont 2:b6669c987c8e 25 #include "mbed_debug.h"
emilmont 1:46ce1e16c870 26
va009039 6:3c5b3606e019 27 #include "F12RFileSystem.h"
va009039 6:3c5b3606e019 28 #include "F12RFileHandle.h"
va009039 6:3c5b3606e019 29 #include "F12RDirHandle.h"
emilmont 1:46ce1e16c870 30
emilmont 1:46ce1e16c870 31 DWORD get_fattime(void) {
emilmont 1:46ce1e16c870 32 time_t rawtime;
emilmont 1:46ce1e16c870 33 time(&rawtime);
emilmont 1:46ce1e16c870 34 struct tm *ptm = localtime(&rawtime);
emilmont 1:46ce1e16c870 35 return (DWORD)(ptm->tm_year - 80) << 25
emilmont 1:46ce1e16c870 36 | (DWORD)(ptm->tm_mon + 1 ) << 21
emilmont 1:46ce1e16c870 37 | (DWORD)(ptm->tm_mday ) << 16
emilmont 1:46ce1e16c870 38 | (DWORD)(ptm->tm_hour ) << 11
emilmont 1:46ce1e16c870 39 | (DWORD)(ptm->tm_min ) << 5
emilmont 1:46ce1e16c870 40 | (DWORD)(ptm->tm_sec/2 );
emilmont 1:46ce1e16c870 41 }
emilmont 1:46ce1e16c870 42
va009039 6:3c5b3606e019 43 F12RFileSystem *F12RFileSystem::_ffs[_VOLUMES] = {0};
emilmont 1:46ce1e16c870 44
va009039 6:3c5b3606e019 45 F12RFileSystem::F12RFileSystem(const char* n) : FileSystemLike(n) {
va009039 6:3c5b3606e019 46 debug_if(FFS_DBG, "F12RFileSystem(%s)\n", n);
emilmont 1:46ce1e16c870 47 for(int i=0; i<_VOLUMES; i++) {
emilmont 1:46ce1e16c870 48 if(_ffs[i] == 0) {
emilmont 1:46ce1e16c870 49 _ffs[i] = this;
mbed_official 5:b3b3370574cf 50 _fsid[0] = '0' + i;
mbed_official 5:b3b3370574cf 51 _fsid[1] = '\0';
mbed_official 5:b3b3370574cf 52 debug_if(FFS_DBG, "Mounting [%s] on ffs drive [%s]\n", _name, _fsid);
mbed_official 5:b3b3370574cf 53 f_mount(&_fs, _fsid, 0);
emilmont 1:46ce1e16c870 54 return;
emilmont 1:46ce1e16c870 55 }
emilmont 1:46ce1e16c870 56 }
va009039 6:3c5b3606e019 57 error("Couldn't create %s in F12RFileSystem::F12RFileSystem\n", n);
emilmont 1:46ce1e16c870 58 }
emilmont 1:46ce1e16c870 59
va009039 6:3c5b3606e019 60 F12RFileSystem::~F12RFileSystem() {
emilmont 1:46ce1e16c870 61 for (int i=0; i<_VOLUMES; i++) {
emilmont 1:46ce1e16c870 62 if (_ffs[i] == this) {
emilmont 1:46ce1e16c870 63 _ffs[i] = 0;
mbed_official 5:b3b3370574cf 64 f_mount(NULL, _fsid, 0);
emilmont 1:46ce1e16c870 65 }
emilmont 1:46ce1e16c870 66 }
emilmont 1:46ce1e16c870 67 }
emilmont 1:46ce1e16c870 68
va009039 6:3c5b3606e019 69 FileHandle *F12RFileSystem::open(const char* name, int flags) {
mbed_official 5:b3b3370574cf 70 debug_if(FFS_DBG, "open(%s) on filesystem [%s], drv [%s]\n", name, _name, _fsid);
emilmont 1:46ce1e16c870 71 char n[64];
mbed_official 5:b3b3370574cf 72 sprintf(n, "%s:/%s", _fsid, name);
mbed_official 4:3ff2606d5713 73
emilmont 1:46ce1e16c870 74 /* POSIX flags -> FatFS open mode */
emilmont 1:46ce1e16c870 75 BYTE openmode;
emilmont 1:46ce1e16c870 76 if (flags & O_RDWR) {
emilmont 1:46ce1e16c870 77 openmode = FA_READ|FA_WRITE;
emilmont 1:46ce1e16c870 78 } else if(flags & O_WRONLY) {
emilmont 1:46ce1e16c870 79 openmode = FA_WRITE;
emilmont 1:46ce1e16c870 80 } else {
emilmont 1:46ce1e16c870 81 openmode = FA_READ;
emilmont 1:46ce1e16c870 82 }
emilmont 1:46ce1e16c870 83 if(flags & O_CREAT) {
emilmont 1:46ce1e16c870 84 if(flags & O_TRUNC) {
emilmont 1:46ce1e16c870 85 openmode |= FA_CREATE_ALWAYS;
emilmont 1:46ce1e16c870 86 } else {
emilmont 1:46ce1e16c870 87 openmode |= FA_OPEN_ALWAYS;
emilmont 1:46ce1e16c870 88 }
emilmont 1:46ce1e16c870 89 }
mbed_official 4:3ff2606d5713 90
emilmont 1:46ce1e16c870 91 FIL fh;
emilmont 1:46ce1e16c870 92 FRESULT res = f_open(&fh, n, openmode);
mbed_official 4:3ff2606d5713 93 if (res) {
emilmont 1:46ce1e16c870 94 debug_if(FFS_DBG, "f_open('w') failed: %d\n", res);
emilmont 1:46ce1e16c870 95 return NULL;
emilmont 1:46ce1e16c870 96 }
emilmont 1:46ce1e16c870 97 if (flags & O_APPEND) {
emilmont 1:46ce1e16c870 98 f_lseek(&fh, fh.fsize);
emilmont 1:46ce1e16c870 99 }
va009039 6:3c5b3606e019 100 return new F12RFileHandle(fh);
emilmont 1:46ce1e16c870 101 }
mbed_official 4:3ff2606d5713 102
va009039 6:3c5b3606e019 103 int F12RFileSystem::remove(const char *filename) {
emilmont 1:46ce1e16c870 104 FRESULT res = f_unlink(filename);
mbed_official 4:3ff2606d5713 105 if (res) {
emilmont 1:46ce1e16c870 106 debug_if(FFS_DBG, "f_unlink() failed: %d\n", res);
emilmont 1:46ce1e16c870 107 return -1;
emilmont 1:46ce1e16c870 108 }
emilmont 1:46ce1e16c870 109 return 0;
emilmont 1:46ce1e16c870 110 }
emilmont 1:46ce1e16c870 111
va009039 6:3c5b3606e019 112 int F12RFileSystem::rename(const char *oldname, const char *newname) {
mbed_official 4:3ff2606d5713 113 FRESULT res = f_rename(oldname, newname);
mbed_official 4:3ff2606d5713 114 if (res) {
mbed_official 4:3ff2606d5713 115 debug_if(FFS_DBG, "f_rename() failed: %d\n", res);
mbed_official 4:3ff2606d5713 116 return -1;
mbed_official 4:3ff2606d5713 117 }
mbed_official 4:3ff2606d5713 118 return 0;
mbed_official 4:3ff2606d5713 119 }
mbed_official 4:3ff2606d5713 120
va009039 6:3c5b3606e019 121 int F12RFileSystem::format() {
emilmont 1:46ce1e16c870 122 FRESULT res = f_mkfs(_fsid, 0, 512); // Logical drive number, Partitioning rule, Allocation unit size (bytes per cluster)
emilmont 1:46ce1e16c870 123 if (res) {
emilmont 1:46ce1e16c870 124 debug_if(FFS_DBG, "f_mkfs() failed: %d\n", res);
emilmont 1:46ce1e16c870 125 return -1;
emilmont 1:46ce1e16c870 126 }
emilmont 1:46ce1e16c870 127 return 0;
emilmont 1:46ce1e16c870 128 }
emilmont 1:46ce1e16c870 129
va009039 6:3c5b3606e019 130 DirHandle *F12RFileSystem::opendir(const char *name) {
emilmont 1:46ce1e16c870 131 FATFS_DIR dir;
emilmont 1:46ce1e16c870 132 FRESULT res = f_opendir(&dir, name);
emilmont 1:46ce1e16c870 133 if (res != 0) {
emilmont 1:46ce1e16c870 134 return NULL;
emilmont 1:46ce1e16c870 135 }
va009039 6:3c5b3606e019 136 return new F12RDirHandle(dir);
emilmont 1:46ce1e16c870 137 }
emilmont 1:46ce1e16c870 138
va009039 6:3c5b3606e019 139 int F12RFileSystem::mkdir(const char *name, mode_t mode) {
emilmont 1:46ce1e16c870 140 FRESULT res = f_mkdir(name);
emilmont 1:46ce1e16c870 141 return res == 0 ? 0 : -1;
emilmont 1:46ce1e16c870 142 }
mbed_official 4:3ff2606d5713 143
va009039 6:3c5b3606e019 144 int F12RFileSystem::mount() {
mbed_official 5:b3b3370574cf 145 FRESULT res = f_mount(&_fs, _fsid, 1);
mbed_official 4:3ff2606d5713 146 return res == 0 ? 0 : -1;
mbed_official 4:3ff2606d5713 147 }
mbed_official 4:3ff2606d5713 148
va009039 6:3c5b3606e019 149 int F12RFileSystem::unmount() {
mbed_official 4:3ff2606d5713 150 if (disk_sync())
mbed_official 4:3ff2606d5713 151 return -1;
mbed_official 5:b3b3370574cf 152 FRESULT res = f_mount(NULL, _fsid, 0);
mbed_official 4:3ff2606d5713 153 return res == 0 ? 0 : -1;
mbed_official 4:3ff2606d5713 154 }