S K UCI / SDFileSystemFilinfo

Example SDFileSystem in which FATDirHandle exposes the file info struct of the current file/directory.

FATFileSystem/FATFileHandle.cpp@1:a7d8fc28a863, 2014-11-28 (annotated)

Committer:
uci1
Date:
Fri Nov 28 05:12:38 2014 +0000
Revision:
1:a7d8fc28a863
Parent:
0:687056ba3278 
change SD init so it won't stall on failed initialization

Who changed what in which revision?

UserRevisionLine numberNew contents of line
uci1 0:687056ba3278 1 /* mbed Microcontroller Library
uci1 0:687056ba3278 2 * Copyright (c) 2006-2012 ARM Limited
uci1 0:687056ba3278 3 *
uci1 0:687056ba3278 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
uci1 0:687056ba3278 5 * of this software and associated documentation files (the "Software"), to deal
uci1 0:687056ba3278 6 * in the Software without restriction, including without limitation the rights
uci1 0:687056ba3278 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
uci1 0:687056ba3278 8 * copies of the Software, and to permit persons to whom the Software is
uci1 0:687056ba3278 9 * furnished to do so, subject to the following conditions:
uci1 0:687056ba3278 10 *
uci1 0:687056ba3278 11 * The above copyright notice and this permission notice shall be included in
uci1 0:687056ba3278 12 * all copies or substantial portions of the Software.
uci1 0:687056ba3278 13 *
uci1 0:687056ba3278 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
uci1 0:687056ba3278 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
uci1 0:687056ba3278 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
uci1 0:687056ba3278 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
uci1 0:687056ba3278 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
uci1 0:687056ba3278 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
uci1 0:687056ba3278 20 * SOFTWARE.
uci1 0:687056ba3278 21 */
uci1 0:687056ba3278 22 #include "ff.h"
uci1 0:687056ba3278 23 #include "ffconf.h"
uci1 0:687056ba3278 24 #include "mbed_debug.h"
uci1 0:687056ba3278 25
uci1 0:687056ba3278 26 #include "FATFileHandle.h"
uci1 0:687056ba3278 27
uci1 0:687056ba3278 28 FATFileHandle::FATFileHandle(FIL fh) {
uci1 0:687056ba3278 29 _fh = fh;
uci1 0:687056ba3278 30 }
uci1 0:687056ba3278 31
uci1 0:687056ba3278 32 int FATFileHandle::close() {
uci1 0:687056ba3278 33 int retval = f_close(&_fh);
uci1 0:687056ba3278 34 delete this;
uci1 0:687056ba3278 35 return retval;
uci1 0:687056ba3278 36 }
uci1 0:687056ba3278 37
uci1 0:687056ba3278 38 ssize_t FATFileHandle::write(const void* buffer, size_t length) {
uci1 0:687056ba3278 39 UINT n;
uci1 0:687056ba3278 40 FRESULT res = f_write(&_fh, buffer, length, &n);
uci1 0:687056ba3278 41 if (res) {
uci1 0:687056ba3278 42 debug_if(FFS_DBG, "f_write() failed: %d", res);
uci1 0:687056ba3278 43 return -1;
uci1 0:687056ba3278 44 }
uci1 0:687056ba3278 45 return n;
uci1 0:687056ba3278 46 }
uci1 0:687056ba3278 47
uci1 0:687056ba3278 48 ssize_t FATFileHandle::read(void* buffer, size_t length) {
uci1 0:687056ba3278 49 debug_if(FFS_DBG, "read(%d)\n", length);
uci1 0:687056ba3278 50 UINT n;
uci1 0:687056ba3278 51 FRESULT res = f_read(&_fh, buffer, length, &n);
uci1 0:687056ba3278 52 if (res) {
uci1 0:687056ba3278 53 debug_if(FFS_DBG, "f_read() failed: %d\n", res);
uci1 0:687056ba3278 54 return -1;
uci1 0:687056ba3278 55 }
uci1 0:687056ba3278 56 return n;
uci1 0:687056ba3278 57 }
uci1 0:687056ba3278 58
uci1 0:687056ba3278 59 int FATFileHandle::isatty() {
uci1 0:687056ba3278 60 return 0;
uci1 0:687056ba3278 61 }
uci1 0:687056ba3278 62
uci1 0:687056ba3278 63 off_t FATFileHandle::lseek(off_t position, int whence) {
uci1 0:687056ba3278 64 if (whence == SEEK_END) {
uci1 0:687056ba3278 65 position += _fh.fsize;
uci1 0:687056ba3278 66 } else if(whence==SEEK_CUR) {
uci1 0:687056ba3278 67 position += _fh.fptr;
uci1 0:687056ba3278 68 }
uci1 0:687056ba3278 69 FRESULT res = f_lseek(&_fh, position);
uci1 0:687056ba3278 70 if (res) {
uci1 0:687056ba3278 71 debug_if(FFS_DBG, "lseek failed: %d\n", res);
uci1 0:687056ba3278 72 return -1;
uci1 0:687056ba3278 73 } else {
uci1 0:687056ba3278 74 debug_if(FFS_DBG, "lseek OK, returning %i\n", _fh.fptr);
uci1 0:687056ba3278 75 return _fh.fptr;
uci1 0:687056ba3278 76 }
uci1 0:687056ba3278 77 }
uci1 0:687056ba3278 78
uci1 0:687056ba3278 79 int FATFileHandle::fsync() {
uci1 0:687056ba3278 80 FRESULT res = f_sync(&_fh);
uci1 0:687056ba3278 81 if (res) {
uci1 0:687056ba3278 82 debug_if(FFS_DBG, "f_sync() failed: %d\n", res);
uci1 0:687056ba3278 83 return -1;
uci1 0:687056ba3278 84 }
uci1 0:687056ba3278 85 return 0;
uci1 0:687056ba3278 86 }
uci1 0:687056ba3278 87
uci1 0:687056ba3278 88 off_t FATFileHandle::flen() {
uci1 0:687056ba3278 89 return _fh.fsize;
uci1 0:687056ba3278 90 }