FFT LED Display / 4180_EditThis_copy

this hurts

Dependencies:   FFT

FATFileSystem/FATDirHandle.cpp@7:0d62545e6d73, 2020-12-03 (annotated)

Committer:
shyamgatech
Date:
Thu Dec 03 18:15:35 2020 +0000
Revision:
7:0d62545e6d73
Parent:
0:d6c9b09b4042 
addded gui mbed code;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
annieluo2 0:d6c9b09b4042 1 /* mbed Microcontroller Library
annieluo2 0:d6c9b09b4042 2 * Copyright (c) 2006-2012 ARM Limited
annieluo2 0:d6c9b09b4042 3 *
annieluo2 0:d6c9b09b4042 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
annieluo2 0:d6c9b09b4042 5 * of this software and associated documentation files (the "Software"), to deal
annieluo2 0:d6c9b09b4042 6 * in the Software without restriction, including without limitation the rights
annieluo2 0:d6c9b09b4042 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
annieluo2 0:d6c9b09b4042 8 * copies of the Software, and to permit persons to whom the Software is
annieluo2 0:d6c9b09b4042 9 * furnished to do so, subject to the following conditions:
annieluo2 0:d6c9b09b4042 10 *
annieluo2 0:d6c9b09b4042 11 * The above copyright notice and this permission notice shall be included in
annieluo2 0:d6c9b09b4042 12 * all copies or substantial portions of the Software.
annieluo2 0:d6c9b09b4042 13 *
annieluo2 0:d6c9b09b4042 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
annieluo2 0:d6c9b09b4042 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
annieluo2 0:d6c9b09b4042 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
annieluo2 0:d6c9b09b4042 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
annieluo2 0:d6c9b09b4042 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
annieluo2 0:d6c9b09b4042 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
annieluo2 0:d6c9b09b4042 20 * SOFTWARE.
annieluo2 0:d6c9b09b4042 21 */
annieluo2 0:d6c9b09b4042 22 #include <string.h>
annieluo2 0:d6c9b09b4042 23 #include "ff.h"
annieluo2 0:d6c9b09b4042 24 #include "FATDirHandle.h"
annieluo2 0:d6c9b09b4042 25
annieluo2 0:d6c9b09b4042 26 using namespace mbed;
annieluo2 0:d6c9b09b4042 27
annieluo2 0:d6c9b09b4042 28 FATDirHandle::FATDirHandle(const FATFS_DIR &the_dir) {
annieluo2 0:d6c9b09b4042 29 dir = the_dir;
annieluo2 0:d6c9b09b4042 30 }
annieluo2 0:d6c9b09b4042 31
annieluo2 0:d6c9b09b4042 32 int FATDirHandle::closedir() {
annieluo2 0:d6c9b09b4042 33 int retval = f_closedir(&dir);
annieluo2 0:d6c9b09b4042 34 delete this;
annieluo2 0:d6c9b09b4042 35 return retval;
annieluo2 0:d6c9b09b4042 36 }
annieluo2 0:d6c9b09b4042 37
annieluo2 0:d6c9b09b4042 38 struct dirent *FATDirHandle::readdir() {
annieluo2 0:d6c9b09b4042 39 FILINFO finfo;
annieluo2 0:d6c9b09b4042 40
annieluo2 0:d6c9b09b4042 41 #if _USE_LFN
annieluo2 0:d6c9b09b4042 42 finfo.lfname = cur_entry.d_name;
annieluo2 0:d6c9b09b4042 43 finfo.lfsize = sizeof(cur_entry.d_name);
annieluo2 0:d6c9b09b4042 44 #endif // _USE_LFN
annieluo2 0:d6c9b09b4042 45
annieluo2 0:d6c9b09b4042 46 FRESULT res = f_readdir(&dir, &finfo);
annieluo2 0:d6c9b09b4042 47
annieluo2 0:d6c9b09b4042 48 #if _USE_LFN
annieluo2 0:d6c9b09b4042 49 if(res != 0 || finfo.fname[0]==0) {
annieluo2 0:d6c9b09b4042 50 return NULL;
annieluo2 0:d6c9b09b4042 51 } else {
annieluo2 0:d6c9b09b4042 52 if(cur_entry.d_name[0]==0) {
annieluo2 0:d6c9b09b4042 53 // No long filename so use short filename.
annieluo2 0:d6c9b09b4042 54 memcpy(cur_entry.d_name, finfo.fname, sizeof(finfo.fname));
annieluo2 0:d6c9b09b4042 55 }
annieluo2 0:d6c9b09b4042 56 return &cur_entry;
annieluo2 0:d6c9b09b4042 57 }
annieluo2 0:d6c9b09b4042 58 #else
annieluo2 0:d6c9b09b4042 59 if(res != 0 || finfo.fname[0]==0) {
annieluo2 0:d6c9b09b4042 60 return NULL;
annieluo2 0:d6c9b09b4042 61 } else {
annieluo2 0:d6c9b09b4042 62 memcpy(cur_entry.d_name, finfo.fname, sizeof(finfo.fname));
annieluo2 0:d6c9b09b4042 63 return &cur_entry;
annieluo2 0:d6c9b09b4042 64 }
annieluo2 0:d6c9b09b4042 65 #endif /* _USE_LFN */
annieluo2 0:d6c9b09b4042 66 }
annieluo2 0:d6c9b09b4042 67
annieluo2 0:d6c9b09b4042 68 void FATDirHandle::rewinddir() {
annieluo2 0:d6c9b09b4042 69 dir.index = 0;
annieluo2 0:d6c9b09b4042 70 }
annieluo2 0:d6c9b09b4042 71
annieluo2 0:d6c9b09b4042 72 off_t FATDirHandle::telldir() {
annieluo2 0:d6c9b09b4042 73 return dir.index;
annieluo2 0:d6c9b09b4042 74 }
annieluo2 0:d6c9b09b4042 75
annieluo2 0:d6c9b09b4042 76 void FATDirHandle::seekdir(off_t location) {
annieluo2 0:d6c9b09b4042 77 dir.index = location;
annieluo2 0:d6c9b09b4042 78 }
annieluo2 0:d6c9b09b4042 79
annieluo2 0:d6c9b09b4042 80 ssize_t FATDirHandle::read(struct dirent *ent) {
annieluo2 0:d6c9b09b4042 81 struct dirent *temp = readdir();
annieluo2 0:d6c9b09b4042 82 if (!temp) {
annieluo2 0:d6c9b09b4042 83 return 0;
annieluo2 0:d6c9b09b4042 84 }
annieluo2 0:d6c9b09b4042 85
annieluo2 0:d6c9b09b4042 86 memcpy(ent, temp, sizeof(*ent));
annieluo2 0:d6c9b09b4042 87 return 1;
annieluo2 0:d6c9b09b4042 88 }
annieluo2 0:d6c9b09b4042 89