Muhammad Safwan / Mbed 2 deprecated 4180_hoverboad_project

Mbed project to control a hoverboard

Dependencies:   mbed wave_player Servo 4DGL-uLCD-SE LSM9DS1_Library_cal HC_SR04_Ultrasonic_Library

SDFileSystem/FATFileSystem/FATDirHandle.cpp@0:808403b99108, 2020-04-28 (annotated)

Committer:
msafwan3
Date:
Tue Apr 28 20:15:24 2020 +0000
Revision:
0:808403b99108
project

Who changed what in which revision?

UserRevisionLine numberNew contents of line
msafwan3 0:808403b99108 1 /* mbed Microcontroller Library
msafwan3 0:808403b99108 2 * Copyright (c) 2006-2012 ARM Limited
msafwan3 0:808403b99108 3 *
msafwan3 0:808403b99108 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
msafwan3 0:808403b99108 5 * of this software and associated documentation files (the "Software"), to deal
msafwan3 0:808403b99108 6 * in the Software without restriction, including without limitation the rights
msafwan3 0:808403b99108 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
msafwan3 0:808403b99108 8 * copies of the Software, and to permit persons to whom the Software is
msafwan3 0:808403b99108 9 * furnished to do so, subject to the following conditions:
msafwan3 0:808403b99108 10 *
msafwan3 0:808403b99108 11 * The above copyright notice and this permission notice shall be included in
msafwan3 0:808403b99108 12 * all copies or substantial portions of the Software.
msafwan3 0:808403b99108 13 *
msafwan3 0:808403b99108 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
msafwan3 0:808403b99108 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
msafwan3 0:808403b99108 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
msafwan3 0:808403b99108 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
msafwan3 0:808403b99108 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
msafwan3 0:808403b99108 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
msafwan3 0:808403b99108 20 * SOFTWARE.
msafwan3 0:808403b99108 21 */
msafwan3 0:808403b99108 22 #include <string.h>
msafwan3 0:808403b99108 23 #include "ff.h"
msafwan3 0:808403b99108 24 #include "FATDirHandle.h"
msafwan3 0:808403b99108 25
msafwan3 0:808403b99108 26 using namespace mbed;
msafwan3 0:808403b99108 27
msafwan3 0:808403b99108 28 FATDirHandle::FATDirHandle(const FATFS_DIR &the_dir) {
msafwan3 0:808403b99108 29 dir = the_dir;
msafwan3 0:808403b99108 30 }
msafwan3 0:808403b99108 31
msafwan3 0:808403b99108 32 int FATDirHandle::closedir() {
msafwan3 0:808403b99108 33 delete this;
msafwan3 0:808403b99108 34 return 0;
msafwan3 0:808403b99108 35 }
msafwan3 0:808403b99108 36
msafwan3 0:808403b99108 37 struct dirent *FATDirHandle::readdir() {
msafwan3 0:808403b99108 38 FILINFO finfo;
msafwan3 0:808403b99108 39
msafwan3 0:808403b99108 40 #if _USE_LFN
msafwan3 0:808403b99108 41 finfo.lfname = cur_entry.d_name;
msafwan3 0:808403b99108 42 finfo.lfsize = sizeof(cur_entry.d_name);
msafwan3 0:808403b99108 43 #endif // _USE_LFN
msafwan3 0:808403b99108 44
msafwan3 0:808403b99108 45 FRESULT res = f_readdir(&dir, &finfo);
msafwan3 0:808403b99108 46
msafwan3 0:808403b99108 47 #if _USE_LFN
msafwan3 0:808403b99108 48 if(res != 0 || finfo.fname[0]==0) {
msafwan3 0:808403b99108 49 return NULL;
msafwan3 0:808403b99108 50 } else {
msafwan3 0:808403b99108 51 if(cur_entry.d_name[0]==0) {
msafwan3 0:808403b99108 52 // No long filename so use short filename.
msafwan3 0:808403b99108 53 memcpy(cur_entry.d_name, finfo.fname, sizeof(finfo.fname));
msafwan3 0:808403b99108 54 }
msafwan3 0:808403b99108 55 return &cur_entry;
msafwan3 0:808403b99108 56 }
msafwan3 0:808403b99108 57 #else
msafwan3 0:808403b99108 58 if(res != 0 || finfo.fname[0]==0) {
msafwan3 0:808403b99108 59 return NULL;
msafwan3 0:808403b99108 60 } else {
msafwan3 0:808403b99108 61 memcpy(cur_entry.d_name, finfo.fname, sizeof(finfo.fname));
msafwan3 0:808403b99108 62 return &cur_entry;
msafwan3 0:808403b99108 63 }
msafwan3 0:808403b99108 64 #endif /* _USE_LFN */
msafwan3 0:808403b99108 65 }
msafwan3 0:808403b99108 66
msafwan3 0:808403b99108 67 void FATDirHandle::rewinddir() {
msafwan3 0:808403b99108 68 dir.index = 0;
msafwan3 0:808403b99108 69 }
msafwan3 0:808403b99108 70
msafwan3 0:808403b99108 71 off_t FATDirHandle::telldir() {
msafwan3 0:808403b99108 72 return dir.index;
msafwan3 0:808403b99108 73 }
msafwan3 0:808403b99108 74
msafwan3 0:808403b99108 75 void FATDirHandle::seekdir(off_t location) {
msafwan3 0:808403b99108 76 dir.index = location;
msafwan3 0:808403b99108 77 }
msafwan3 0:808403b99108 78