Zixuan Kang / Mbed 2 deprecated rpg_game

ECE 2035 Homework

Dependencies:   mbed wave_player 4DGL-uLCD-SE MMA8452

SDFileSystem/FATFileSystem/FATFileHandle.cpp@4:e3fbc74a3783, 2019-11-14 (annotated)

Committer:
zkang0729
Date:
Thu Nov 14 17:14:37 2019 +0000
Revision:
4:e3fbc74a3783
Parent:
0:35660d7952f7 
Initial Commit;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
rconnorlawson 0:35660d7952f7 1 /* mbed Microcontroller Library
rconnorlawson 0:35660d7952f7 2 * Copyright (c) 2006-2012 ARM Limited
rconnorlawson 0:35660d7952f7 3 *
rconnorlawson 0:35660d7952f7 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
rconnorlawson 0:35660d7952f7 5 * of this software and associated documentation files (the "Software"), to deal
rconnorlawson 0:35660d7952f7 6 * in the Software without restriction, including without limitation the rights
rconnorlawson 0:35660d7952f7 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
rconnorlawson 0:35660d7952f7 8 * copies of the Software, and to permit persons to whom the Software is
rconnorlawson 0:35660d7952f7 9 * furnished to do so, subject to the following conditions:
rconnorlawson 0:35660d7952f7 10 *
rconnorlawson 0:35660d7952f7 11 * The above copyright notice and this permission notice shall be included in
rconnorlawson 0:35660d7952f7 12 * all copies or substantial portions of the Software.
rconnorlawson 0:35660d7952f7 13 *
rconnorlawson 0:35660d7952f7 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
rconnorlawson 0:35660d7952f7 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
rconnorlawson 0:35660d7952f7 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
rconnorlawson 0:35660d7952f7 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
rconnorlawson 0:35660d7952f7 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
rconnorlawson 0:35660d7952f7 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
rconnorlawson 0:35660d7952f7 20 * SOFTWARE.
rconnorlawson 0:35660d7952f7 21 */
rconnorlawson 0:35660d7952f7 22 #include "ff.h"
rconnorlawson 0:35660d7952f7 23 #include "ffconf.h"
rconnorlawson 0:35660d7952f7 24 #include "mbed_debug.h"
rconnorlawson 0:35660d7952f7 25
rconnorlawson 0:35660d7952f7 26 #include "FATFileHandle.h"
rconnorlawson 0:35660d7952f7 27
rconnorlawson 0:35660d7952f7 28 FATFileHandle::FATFileHandle(FIL fh) {
rconnorlawson 0:35660d7952f7 29 _fh = fh;
rconnorlawson 0:35660d7952f7 30 }
rconnorlawson 0:35660d7952f7 31
rconnorlawson 0:35660d7952f7 32 int FATFileHandle::close() {
rconnorlawson 0:35660d7952f7 33 int retval = f_close(&_fh);
rconnorlawson 0:35660d7952f7 34 delete this;
rconnorlawson 0:35660d7952f7 35 return retval;
rconnorlawson 0:35660d7952f7 36 }
rconnorlawson 0:35660d7952f7 37
rconnorlawson 0:35660d7952f7 38 ssize_t FATFileHandle::write(const void* buffer, size_t length) {
rconnorlawson 0:35660d7952f7 39 UINT n;
rconnorlawson 0:35660d7952f7 40 FRESULT res = f_write(&_fh, buffer, length, &n);
rconnorlawson 0:35660d7952f7 41 if (res) {
rconnorlawson 0:35660d7952f7 42 debug_if(FFS_DBG, "f_write() failed: %d", res);
rconnorlawson 0:35660d7952f7 43 return -1;
rconnorlawson 0:35660d7952f7 44 }
rconnorlawson 0:35660d7952f7 45 return n;
rconnorlawson 0:35660d7952f7 46 }
rconnorlawson 0:35660d7952f7 47
rconnorlawson 0:35660d7952f7 48 ssize_t FATFileHandle::read(void* buffer, size_t length) {
rconnorlawson 0:35660d7952f7 49 debug_if(FFS_DBG, "read(%d)\n", length);
rconnorlawson 0:35660d7952f7 50 UINT n;
rconnorlawson 0:35660d7952f7 51 FRESULT res = f_read(&_fh, buffer, length, &n);
rconnorlawson 0:35660d7952f7 52 if (res) {
rconnorlawson 0:35660d7952f7 53 debug_if(FFS_DBG, "f_read() failed: %d\n", res);
rconnorlawson 0:35660d7952f7 54 return -1;
rconnorlawson 0:35660d7952f7 55 }
rconnorlawson 0:35660d7952f7 56 return n;
rconnorlawson 0:35660d7952f7 57 }
rconnorlawson 0:35660d7952f7 58
rconnorlawson 0:35660d7952f7 59 int FATFileHandle::isatty() {
rconnorlawson 0:35660d7952f7 60 return 0;
rconnorlawson 0:35660d7952f7 61 }
rconnorlawson 0:35660d7952f7 62
rconnorlawson 0:35660d7952f7 63 off_t FATFileHandle::lseek(off_t position, int whence) {
rconnorlawson 0:35660d7952f7 64 if (whence == SEEK_END) {
rconnorlawson 0:35660d7952f7 65 position += _fh.fsize;
rconnorlawson 0:35660d7952f7 66 } else if(whence==SEEK_CUR) {
rconnorlawson 0:35660d7952f7 67 position += _fh.fptr;
rconnorlawson 0:35660d7952f7 68 }
rconnorlawson 0:35660d7952f7 69 FRESULT res = f_lseek(&_fh, position);
rconnorlawson 0:35660d7952f7 70 if (res) {
rconnorlawson 0:35660d7952f7 71 debug_if(FFS_DBG, "lseek failed: %d\n", res);
rconnorlawson 0:35660d7952f7 72 return -1;
rconnorlawson 0:35660d7952f7 73 } else {
rconnorlawson 0:35660d7952f7 74 debug_if(FFS_DBG, "lseek OK, returning %i\n", _fh.fptr);
rconnorlawson 0:35660d7952f7 75 return _fh.fptr;
rconnorlawson 0:35660d7952f7 76 }
rconnorlawson 0:35660d7952f7 77 }
rconnorlawson 0:35660d7952f7 78
rconnorlawson 0:35660d7952f7 79 int FATFileHandle::fsync() {
rconnorlawson 0:35660d7952f7 80 FRESULT res = f_sync(&_fh);
rconnorlawson 0:35660d7952f7 81 if (res) {
rconnorlawson 0:35660d7952f7 82 debug_if(FFS_DBG, "f_sync() failed: %d\n", res);
rconnorlawson 0:35660d7952f7 83 return -1;
rconnorlawson 0:35660d7952f7 84 }
rconnorlawson 0:35660d7952f7 85 return 0;
rconnorlawson 0:35660d7952f7 86 }
rconnorlawson 0:35660d7952f7 87
rconnorlawson 0:35660d7952f7 88 off_t FATFileHandle::flen() {
rconnorlawson 0:35660d7952f7 89 return _fh.fsize;
rconnorlawson 0:35660d7952f7 90 }