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Dependencies:   mbed Servo

SDFileSystem/FATFileHandle.cpp@6:d10e992a37b1, 2022-06-04 (annotated)

Committer:
Giamarchi
Date:
Sat Jun 04 16:29:45 2022 +0000
Revision:
6:d10e992a37b1
Parent:
0:b8bade04f24f 
MAJ

Who changed what in which revision?

UserRevisionLine numberNew contents of line
eric11fr 0:b8bade04f24f 1 /* mbed Microcontroller Library
eric11fr 0:b8bade04f24f 2 * Copyright (c) 2006-2012 ARM Limited
eric11fr 0:b8bade04f24f 3 *
eric11fr 0:b8bade04f24f 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
eric11fr 0:b8bade04f24f 5 * of this software and associated documentation files (the "Software"), to deal
eric11fr 0:b8bade04f24f 6 * in the Software without restriction, including without limitation the rights
eric11fr 0:b8bade04f24f 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
eric11fr 0:b8bade04f24f 8 * copies of the Software, and to permit persons to whom the Software is
eric11fr 0:b8bade04f24f 9 * furnished to do so, subject to the following conditions:
eric11fr 0:b8bade04f24f 10 *
eric11fr 0:b8bade04f24f 11 * The above copyright notice and this permission notice shall be included in
eric11fr 0:b8bade04f24f 12 * all copies or substantial portions of the Software.
eric11fr 0:b8bade04f24f 13 *
eric11fr 0:b8bade04f24f 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
eric11fr 0:b8bade04f24f 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
eric11fr 0:b8bade04f24f 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
eric11fr 0:b8bade04f24f 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
eric11fr 0:b8bade04f24f 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
eric11fr 0:b8bade04f24f 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
eric11fr 0:b8bade04f24f 20 * SOFTWARE.
eric11fr 0:b8bade04f24f 21 */
eric11fr 0:b8bade04f24f 22 #include "ff.h"
eric11fr 0:b8bade04f24f 23 #include "ffconf.h"
eric11fr 0:b8bade04f24f 24 #include "mbed_debug.h"
eric11fr 0:b8bade04f24f 25
eric11fr 0:b8bade04f24f 26 #include "FATFileHandle.h"
eric11fr 0:b8bade04f24f 27
eric11fr 0:b8bade04f24f 28 FATFileHandle::FATFileHandle(FIL fh) {
eric11fr 0:b8bade04f24f 29 _fh = fh;
eric11fr 0:b8bade04f24f 30 }
eric11fr 0:b8bade04f24f 31
eric11fr 0:b8bade04f24f 32 int FATFileHandle::close() {
eric11fr 0:b8bade04f24f 33 int retval = f_close(&_fh);
eric11fr 0:b8bade04f24f 34 delete this;
eric11fr 0:b8bade04f24f 35 return retval;
eric11fr 0:b8bade04f24f 36 }
eric11fr 0:b8bade04f24f 37
eric11fr 0:b8bade04f24f 38 ssize_t FATFileHandle::write(const void* buffer, size_t length) {
eric11fr 0:b8bade04f24f 39 UINT n;
eric11fr 0:b8bade04f24f 40 FRESULT res = f_write(&_fh, buffer, length, &n);
eric11fr 0:b8bade04f24f 41 if (res) {
eric11fr 0:b8bade04f24f 42 debug_if(FFS_DBG, "f_write() failed: %d", res);
eric11fr 0:b8bade04f24f 43 return -1;
eric11fr 0:b8bade04f24f 44 }
eric11fr 0:b8bade04f24f 45 return n;
eric11fr 0:b8bade04f24f 46 }
eric11fr 0:b8bade04f24f 47
eric11fr 0:b8bade04f24f 48 ssize_t FATFileHandle::read(void* buffer, size_t length) {
eric11fr 0:b8bade04f24f 49 debug_if(FFS_DBG, "read(%d)\n", length);
eric11fr 0:b8bade04f24f 50 UINT n;
eric11fr 0:b8bade04f24f 51 FRESULT res = f_read(&_fh, buffer, length, &n);
eric11fr 0:b8bade04f24f 52 if (res) {
eric11fr 0:b8bade04f24f 53 debug_if(FFS_DBG, "f_read() failed: %d\n", res);
eric11fr 0:b8bade04f24f 54 return -1;
eric11fr 0:b8bade04f24f 55 }
eric11fr 0:b8bade04f24f 56 return n;
eric11fr 0:b8bade04f24f 57 }
eric11fr 0:b8bade04f24f 58
eric11fr 0:b8bade04f24f 59 int FATFileHandle::isatty() {
eric11fr 0:b8bade04f24f 60 return 0;
eric11fr 0:b8bade04f24f 61 }
eric11fr 0:b8bade04f24f 62
eric11fr 0:b8bade04f24f 63 off_t FATFileHandle::lseek(off_t position, int whence) {
eric11fr 0:b8bade04f24f 64 if (whence == SEEK_END) {
eric11fr 0:b8bade04f24f 65 position += _fh.fsize;
eric11fr 0:b8bade04f24f 66 } else if(whence==SEEK_CUR) {
eric11fr 0:b8bade04f24f 67 position += _fh.fptr;
eric11fr 0:b8bade04f24f 68 }
eric11fr 0:b8bade04f24f 69 FRESULT res = f_lseek(&_fh, position);
eric11fr 0:b8bade04f24f 70 if (res) {
eric11fr 0:b8bade04f24f 71 debug_if(FFS_DBG, "lseek failed: %d\n", res);
eric11fr 0:b8bade04f24f 72 return -1;
eric11fr 0:b8bade04f24f 73 } else {
eric11fr 0:b8bade04f24f 74 debug_if(FFS_DBG, "lseek OK, returning %i\n", _fh.fptr);
eric11fr 0:b8bade04f24f 75 return _fh.fptr;
eric11fr 0:b8bade04f24f 76 }
eric11fr 0:b8bade04f24f 77 }
eric11fr 0:b8bade04f24f 78
eric11fr 0:b8bade04f24f 79 int FATFileHandle::fsync() {
eric11fr 0:b8bade04f24f 80 FRESULT res = f_sync(&_fh);
eric11fr 0:b8bade04f24f 81 if (res) {
eric11fr 0:b8bade04f24f 82 debug_if(FFS_DBG, "f_sync() failed: %d\n", res);
eric11fr 0:b8bade04f24f 83 return -1;
eric11fr 0:b8bade04f24f 84 }
eric11fr 0:b8bade04f24f 85 return 0;
eric11fr 0:b8bade04f24f 86 }
eric11fr 0:b8bade04f24f 87
eric11fr 0:b8bade04f24f 88 off_t FATFileHandle::flen() {
eric11fr 0:b8bade04f24f 89 return _fh.fsize;
eric11fr 0:b8bade04f24f 90 }