Maxim nexpaq / nexpaq_dev

Preliminary main mbed library for nexpaq development

libraries/fs/fat/FATFileHandle.cpp@0:6c56fb4bc5f0, 2016-11-04 (annotated)

Committer:
nexpaq
Date:
Fri Nov 04 20:27:58 2016 +0000
Revision:
0:6c56fb4bc5f0
Moving to library for sharing updates

Who changed what in which revision?

UserRevisionLine numberNew contents of line
nexpaq 0:6c56fb4bc5f0 1 /* mbed Microcontroller Library
nexpaq 0:6c56fb4bc5f0 2 * Copyright (c) 2006-2012 ARM Limited
nexpaq 0:6c56fb4bc5f0 3 *
nexpaq 0:6c56fb4bc5f0 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
nexpaq 0:6c56fb4bc5f0 5 * of this software and associated documentation files (the "Software"), to deal
nexpaq 0:6c56fb4bc5f0 6 * in the Software without restriction, including without limitation the rights
nexpaq 0:6c56fb4bc5f0 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
nexpaq 0:6c56fb4bc5f0 8 * copies of the Software, and to permit persons to whom the Software is
nexpaq 0:6c56fb4bc5f0 9 * furnished to do so, subject to the following conditions:
nexpaq 0:6c56fb4bc5f0 10 *
nexpaq 0:6c56fb4bc5f0 11 * The above copyright notice and this permission notice shall be included in
nexpaq 0:6c56fb4bc5f0 12 * all copies or substantial portions of the Software.
nexpaq 0:6c56fb4bc5f0 13 *
nexpaq 0:6c56fb4bc5f0 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
nexpaq 0:6c56fb4bc5f0 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
nexpaq 0:6c56fb4bc5f0 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
nexpaq 0:6c56fb4bc5f0 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
nexpaq 0:6c56fb4bc5f0 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
nexpaq 0:6c56fb4bc5f0 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
nexpaq 0:6c56fb4bc5f0 20 * SOFTWARE.
nexpaq 0:6c56fb4bc5f0 21 */
nexpaq 0:6c56fb4bc5f0 22 #include "ff.h"
nexpaq 0:6c56fb4bc5f0 23 #include "ffconf.h"
nexpaq 0:6c56fb4bc5f0 24 #include "mbed_debug.h"
nexpaq 0:6c56fb4bc5f0 25
nexpaq 0:6c56fb4bc5f0 26 #include "FATFileHandle.h"
nexpaq 0:6c56fb4bc5f0 27
nexpaq 0:6c56fb4bc5f0 28 FATFileHandle::FATFileHandle(FIL fh, PlatformMutex * mutex): _mutex(mutex) {
nexpaq 0:6c56fb4bc5f0 29 _fh = fh;
nexpaq 0:6c56fb4bc5f0 30 }
nexpaq 0:6c56fb4bc5f0 31
nexpaq 0:6c56fb4bc5f0 32 int FATFileHandle::close() {
nexpaq 0:6c56fb4bc5f0 33 lock();
nexpaq 0:6c56fb4bc5f0 34 int retval = f_close(&_fh);
nexpaq 0:6c56fb4bc5f0 35 unlock();
nexpaq 0:6c56fb4bc5f0 36 delete this;
nexpaq 0:6c56fb4bc5f0 37 return retval;
nexpaq 0:6c56fb4bc5f0 38 }
nexpaq 0:6c56fb4bc5f0 39
nexpaq 0:6c56fb4bc5f0 40 ssize_t FATFileHandle::write(const void* buffer, size_t length) {
nexpaq 0:6c56fb4bc5f0 41 lock();
nexpaq 0:6c56fb4bc5f0 42 UINT n;
nexpaq 0:6c56fb4bc5f0 43 FRESULT res = f_write(&_fh, buffer, length, &n);
nexpaq 0:6c56fb4bc5f0 44 if (res) {
nexpaq 0:6c56fb4bc5f0 45 debug_if(FFS_DBG, "f_write() failed: %d", res);
nexpaq 0:6c56fb4bc5f0 46 unlock();
nexpaq 0:6c56fb4bc5f0 47 return -1;
nexpaq 0:6c56fb4bc5f0 48 }
nexpaq 0:6c56fb4bc5f0 49 unlock();
nexpaq 0:6c56fb4bc5f0 50 return n;
nexpaq 0:6c56fb4bc5f0 51 }
nexpaq 0:6c56fb4bc5f0 52
nexpaq 0:6c56fb4bc5f0 53 ssize_t FATFileHandle::read(void* buffer, size_t length) {
nexpaq 0:6c56fb4bc5f0 54 lock();
nexpaq 0:6c56fb4bc5f0 55 debug_if(FFS_DBG, "read(%d)\n", length);
nexpaq 0:6c56fb4bc5f0 56 UINT n;
nexpaq 0:6c56fb4bc5f0 57 FRESULT res = f_read(&_fh, buffer, length, &n);
nexpaq 0:6c56fb4bc5f0 58 if (res) {
nexpaq 0:6c56fb4bc5f0 59 debug_if(FFS_DBG, "f_read() failed: %d\n", res);
nexpaq 0:6c56fb4bc5f0 60 unlock();
nexpaq 0:6c56fb4bc5f0 61 return -1;
nexpaq 0:6c56fb4bc5f0 62 }
nexpaq 0:6c56fb4bc5f0 63 unlock();
nexpaq 0:6c56fb4bc5f0 64 return n;
nexpaq 0:6c56fb4bc5f0 65 }
nexpaq 0:6c56fb4bc5f0 66
nexpaq 0:6c56fb4bc5f0 67 int FATFileHandle::isatty() {
nexpaq 0:6c56fb4bc5f0 68 return 0;
nexpaq 0:6c56fb4bc5f0 69 }
nexpaq 0:6c56fb4bc5f0 70
nexpaq 0:6c56fb4bc5f0 71 off_t FATFileHandle::lseek(off_t position, int whence) {
nexpaq 0:6c56fb4bc5f0 72 lock();
nexpaq 0:6c56fb4bc5f0 73 if (whence == SEEK_END) {
nexpaq 0:6c56fb4bc5f0 74 position += _fh.fsize;
nexpaq 0:6c56fb4bc5f0 75 } else if(whence==SEEK_CUR) {
nexpaq 0:6c56fb4bc5f0 76 position += _fh.fptr;
nexpaq 0:6c56fb4bc5f0 77 }
nexpaq 0:6c56fb4bc5f0 78 FRESULT res = f_lseek(&_fh, position);
nexpaq 0:6c56fb4bc5f0 79 if (res) {
nexpaq 0:6c56fb4bc5f0 80 debug_if(FFS_DBG, "lseek failed: %d\n", res);
nexpaq 0:6c56fb4bc5f0 81 unlock();
nexpaq 0:6c56fb4bc5f0 82 return -1;
nexpaq 0:6c56fb4bc5f0 83 } else {
nexpaq 0:6c56fb4bc5f0 84 debug_if(FFS_DBG, "lseek OK, returning %i\n", _fh.fptr);
nexpaq 0:6c56fb4bc5f0 85 unlock();
nexpaq 0:6c56fb4bc5f0 86 return _fh.fptr;
nexpaq 0:6c56fb4bc5f0 87 }
nexpaq 0:6c56fb4bc5f0 88 }
nexpaq 0:6c56fb4bc5f0 89
nexpaq 0:6c56fb4bc5f0 90 int FATFileHandle::fsync() {
nexpaq 0:6c56fb4bc5f0 91 lock();
nexpaq 0:6c56fb4bc5f0 92 FRESULT res = f_sync(&_fh);
nexpaq 0:6c56fb4bc5f0 93 if (res) {
nexpaq 0:6c56fb4bc5f0 94 debug_if(FFS_DBG, "f_sync() failed: %d\n", res);
nexpaq 0:6c56fb4bc5f0 95 unlock();
nexpaq 0:6c56fb4bc5f0 96 return -1;
nexpaq 0:6c56fb4bc5f0 97 }
nexpaq 0:6c56fb4bc5f0 98 unlock();
nexpaq 0:6c56fb4bc5f0 99 return 0;
nexpaq 0:6c56fb4bc5f0 100 }
nexpaq 0:6c56fb4bc5f0 101
nexpaq 0:6c56fb4bc5f0 102 off_t FATFileHandle::flen() {
nexpaq 0:6c56fb4bc5f0 103 lock();
nexpaq 0:6c56fb4bc5f0 104 off_t size = _fh.fsize;
nexpaq 0:6c56fb4bc5f0 105 unlock();
nexpaq 0:6c56fb4bc5f0 106 return size;
nexpaq 0:6c56fb4bc5f0 107 }
nexpaq 0:6c56fb4bc5f0 108
nexpaq 0:6c56fb4bc5f0 109 void FATFileHandle::lock() {
nexpaq 0:6c56fb4bc5f0 110 _mutex->lock();
nexpaq 0:6c56fb4bc5f0 111 }
nexpaq 0:6c56fb4bc5f0 112
nexpaq 0:6c56fb4bc5f0 113 void FATFileHandle::unlock() {
nexpaq 0:6c56fb4bc5f0 114 _mutex->unlock();
nexpaq 0:6c56fb4bc5f0 115 }