IOT LCD Extra Credit
Fork of FATFileSystem by
FATFileHandle.cpp@8:c4baca9a2c3d, 2016-08-25 (annotated)
- Committer:
- Kojto
- Date:
- Thu Aug 25 09:34:29 2016 +0100
- Revision:
- 8:c4baca9a2c3d
- Parent:
- 4:3ff2606d5713
Synchronized with git revision 4047ff95767d307
- fix _name error (getName())
- add thread safety
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
emilmont | 1:46ce1e16c870 | 1 | /* mbed Microcontroller Library |
emilmont | 1:46ce1e16c870 | 2 | * Copyright (c) 2006-2012 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 "ff.h" |
emilmont | 1:46ce1e16c870 | 23 | #include "ffconf.h" |
emilmont | 2:b6669c987c8e | 24 | #include "mbed_debug.h" |
emilmont | 1:46ce1e16c870 | 25 | |
emilmont | 1:46ce1e16c870 | 26 | #include "FATFileHandle.h" |
emilmont | 1:46ce1e16c870 | 27 | |
Kojto | 8:c4baca9a2c3d | 28 | FATFileHandle::FATFileHandle(FIL fh, PlatformMutex * mutex): _mutex(mutex) { |
emilmont | 1:46ce1e16c870 | 29 | _fh = fh; |
emilmont | 1:46ce1e16c870 | 30 | } |
emilmont | 1:46ce1e16c870 | 31 | |
emilmont | 1:46ce1e16c870 | 32 | int FATFileHandle::close() { |
Kojto | 8:c4baca9a2c3d | 33 | lock(); |
emilmont | 1:46ce1e16c870 | 34 | int retval = f_close(&_fh); |
Kojto | 8:c4baca9a2c3d | 35 | unlock(); |
emilmont | 1:46ce1e16c870 | 36 | delete this; |
emilmont | 1:46ce1e16c870 | 37 | return retval; |
emilmont | 1:46ce1e16c870 | 38 | } |
emilmont | 1:46ce1e16c870 | 39 | |
emilmont | 1:46ce1e16c870 | 40 | ssize_t FATFileHandle::write(const void* buffer, size_t length) { |
Kojto | 8:c4baca9a2c3d | 41 | lock(); |
emilmont | 1:46ce1e16c870 | 42 | UINT n; |
emilmont | 1:46ce1e16c870 | 43 | FRESULT res = f_write(&_fh, buffer, length, &n); |
mbed_official | 4:3ff2606d5713 | 44 | if (res) { |
emilmont | 1:46ce1e16c870 | 45 | debug_if(FFS_DBG, "f_write() failed: %d", res); |
Kojto | 8:c4baca9a2c3d | 46 | unlock(); |
emilmont | 1:46ce1e16c870 | 47 | return -1; |
emilmont | 1:46ce1e16c870 | 48 | } |
Kojto | 8:c4baca9a2c3d | 49 | unlock(); |
emilmont | 1:46ce1e16c870 | 50 | return n; |
emilmont | 1:46ce1e16c870 | 51 | } |
mbed_official | 4:3ff2606d5713 | 52 | |
emilmont | 1:46ce1e16c870 | 53 | ssize_t FATFileHandle::read(void* buffer, size_t length) { |
Kojto | 8:c4baca9a2c3d | 54 | lock(); |
emilmont | 1:46ce1e16c870 | 55 | debug_if(FFS_DBG, "read(%d)\n", length); |
emilmont | 1:46ce1e16c870 | 56 | UINT n; |
emilmont | 1:46ce1e16c870 | 57 | FRESULT res = f_read(&_fh, buffer, length, &n); |
emilmont | 1:46ce1e16c870 | 58 | if (res) { |
emilmont | 1:46ce1e16c870 | 59 | debug_if(FFS_DBG, "f_read() failed: %d\n", res); |
Kojto | 8:c4baca9a2c3d | 60 | unlock(); |
emilmont | 1:46ce1e16c870 | 61 | return -1; |
emilmont | 1:46ce1e16c870 | 62 | } |
Kojto | 8:c4baca9a2c3d | 63 | unlock(); |
emilmont | 1:46ce1e16c870 | 64 | return n; |
emilmont | 1:46ce1e16c870 | 65 | } |
emilmont | 1:46ce1e16c870 | 66 | |
emilmont | 1:46ce1e16c870 | 67 | int FATFileHandle::isatty() { |
emilmont | 1:46ce1e16c870 | 68 | return 0; |
emilmont | 1:46ce1e16c870 | 69 | } |
emilmont | 1:46ce1e16c870 | 70 | |
emilmont | 1:46ce1e16c870 | 71 | off_t FATFileHandle::lseek(off_t position, int whence) { |
Kojto | 8:c4baca9a2c3d | 72 | lock(); |
emilmont | 1:46ce1e16c870 | 73 | if (whence == SEEK_END) { |
emilmont | 1:46ce1e16c870 | 74 | position += _fh.fsize; |
emilmont | 1:46ce1e16c870 | 75 | } else if(whence==SEEK_CUR) { |
emilmont | 1:46ce1e16c870 | 76 | position += _fh.fptr; |
emilmont | 1:46ce1e16c870 | 77 | } |
emilmont | 1:46ce1e16c870 | 78 | FRESULT res = f_lseek(&_fh, position); |
emilmont | 1:46ce1e16c870 | 79 | if (res) { |
emilmont | 1:46ce1e16c870 | 80 | debug_if(FFS_DBG, "lseek failed: %d\n", res); |
Kojto | 8:c4baca9a2c3d | 81 | unlock(); |
emilmont | 1:46ce1e16c870 | 82 | return -1; |
emilmont | 1:46ce1e16c870 | 83 | } else { |
emilmont | 1:46ce1e16c870 | 84 | debug_if(FFS_DBG, "lseek OK, returning %i\n", _fh.fptr); |
Kojto | 8:c4baca9a2c3d | 85 | unlock(); |
emilmont | 1:46ce1e16c870 | 86 | return _fh.fptr; |
emilmont | 1:46ce1e16c870 | 87 | } |
emilmont | 1:46ce1e16c870 | 88 | } |
emilmont | 1:46ce1e16c870 | 89 | |
emilmont | 1:46ce1e16c870 | 90 | int FATFileHandle::fsync() { |
Kojto | 8:c4baca9a2c3d | 91 | lock(); |
emilmont | 1:46ce1e16c870 | 92 | FRESULT res = f_sync(&_fh); |
emilmont | 1:46ce1e16c870 | 93 | if (res) { |
emilmont | 1:46ce1e16c870 | 94 | debug_if(FFS_DBG, "f_sync() failed: %d\n", res); |
Kojto | 8:c4baca9a2c3d | 95 | unlock(); |
emilmont | 1:46ce1e16c870 | 96 | return -1; |
emilmont | 1:46ce1e16c870 | 97 | } |
Kojto | 8:c4baca9a2c3d | 98 | unlock(); |
emilmont | 1:46ce1e16c870 | 99 | return 0; |
emilmont | 1:46ce1e16c870 | 100 | } |
emilmont | 1:46ce1e16c870 | 101 | |
emilmont | 1:46ce1e16c870 | 102 | off_t FATFileHandle::flen() { |
Kojto | 8:c4baca9a2c3d | 103 | lock(); |
Kojto | 8:c4baca9a2c3d | 104 | off_t size = _fh.fsize; |
Kojto | 8:c4baca9a2c3d | 105 | unlock(); |
Kojto | 8:c4baca9a2c3d | 106 | return size; |
emilmont | 1:46ce1e16c870 | 107 | } |
Kojto | 8:c4baca9a2c3d | 108 | |
Kojto | 8:c4baca9a2c3d | 109 | void FATFileHandle::lock() { |
Kojto | 8:c4baca9a2c3d | 110 | _mutex->lock(); |
Kojto | 8:c4baca9a2c3d | 111 | } |
Kojto | 8:c4baca9a2c3d | 112 | |
Kojto | 8:c4baca9a2c3d | 113 | void FATFileHandle::unlock() { |
Kojto | 8:c4baca9a2c3d | 114 | _mutex->unlock(); |
Kojto | 8:c4baca9a2c3d | 115 | } |