Erik - / USBFileSystem

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Dependencies:   USBDevice

Dependents:   SD_USB_FS_HelloWorld S25FL216K_USBFileSystem USBFileSystem_RAMDISK_HelloWorld

FATFileSystem/FATDirHandle.cpp@2:9af05743d551, 2013-10-23 (annotated)

Committer:
Sissors
Date:
Wed Oct 23 20:32:07 2013 +0000
Revision:
2:9af05743d551
FATFileSystem 'Tiny' option enabled -> Primary to solve a buffering issue when USB writes a file, also reduces RAM consumed

;

; USBDevice back to main branch

;

; USBMode 1 is default now

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Sissors 2:9af05743d551 1 /* mbed Microcontroller Library
Sissors 2:9af05743d551 2 * Copyright (c) 2006-2012 ARM Limited
Sissors 2:9af05743d551 3 *
Sissors 2:9af05743d551 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
Sissors 2:9af05743d551 5 * of this software and associated documentation files (the "Software"), to deal
Sissors 2:9af05743d551 6 * in the Software without restriction, including without limitation the rights
Sissors 2:9af05743d551 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
Sissors 2:9af05743d551 8 * copies of the Software, and to permit persons to whom the Software is
Sissors 2:9af05743d551 9 * furnished to do so, subject to the following conditions:
Sissors 2:9af05743d551 10 *
Sissors 2:9af05743d551 11 * The above copyright notice and this permission notice shall be included in
Sissors 2:9af05743d551 12 * all copies or substantial portions of the Software.
Sissors 2:9af05743d551 13 *
Sissors 2:9af05743d551 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
Sissors 2:9af05743d551 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
Sissors 2:9af05743d551 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
Sissors 2:9af05743d551 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
Sissors 2:9af05743d551 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
Sissors 2:9af05743d551 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
Sissors 2:9af05743d551 20 * SOFTWARE.
Sissors 2:9af05743d551 21 */
Sissors 2:9af05743d551 22 #include <string.h>
Sissors 2:9af05743d551 23 #include "ff.h"
Sissors 2:9af05743d551 24 #include "FATDirHandle.h"
Sissors 2:9af05743d551 25
Sissors 2:9af05743d551 26 using namespace mbed;
Sissors 2:9af05743d551 27
Sissors 2:9af05743d551 28 FATDirHandle::FATDirHandle(const FATFS_DIR &the_dir) {
Sissors 2:9af05743d551 29 dir = the_dir;
Sissors 2:9af05743d551 30 }
Sissors 2:9af05743d551 31
Sissors 2:9af05743d551 32 int FATDirHandle::closedir() {
Sissors 2:9af05743d551 33 delete this;
Sissors 2:9af05743d551 34 return 0;
Sissors 2:9af05743d551 35 }
Sissors 2:9af05743d551 36
Sissors 2:9af05743d551 37 struct dirent *FATDirHandle::readdir() {
Sissors 2:9af05743d551 38 FILINFO finfo;
Sissors 2:9af05743d551 39
Sissors 2:9af05743d551 40 #if _USE_LFN
Sissors 2:9af05743d551 41 finfo.lfname = cur_entry.d_name;
Sissors 2:9af05743d551 42 finfo.lfsize = sizeof(cur_entry.d_name);
Sissors 2:9af05743d551 43 #endif // _USE_LFN
Sissors 2:9af05743d551 44
Sissors 2:9af05743d551 45 FRESULT res = f_readdir(&dir, &finfo);
Sissors 2:9af05743d551 46
Sissors 2:9af05743d551 47 #if _USE_LFN
Sissors 2:9af05743d551 48 if(res != 0 || finfo.fname[0]==0) {
Sissors 2:9af05743d551 49 return NULL;
Sissors 2:9af05743d551 50 } else {
Sissors 2:9af05743d551 51 if(cur_entry.d_name[0]==0) {
Sissors 2:9af05743d551 52 // No long filename so use short filename.
Sissors 2:9af05743d551 53 memcpy(cur_entry.d_name, finfo.fname, sizeof(finfo.fname));
Sissors 2:9af05743d551 54 }
Sissors 2:9af05743d551 55 return &cur_entry;
Sissors 2:9af05743d551 56 }
Sissors 2:9af05743d551 57 #else
Sissors 2:9af05743d551 58 if(res != 0 || finfo.fname[0]==0) {
Sissors 2:9af05743d551 59 return NULL;
Sissors 2:9af05743d551 60 } else {
Sissors 2:9af05743d551 61 memcpy(cur_entry.d_name, finfo.fname, sizeof(finfo.fname));
Sissors 2:9af05743d551 62 return &cur_entry;
Sissors 2:9af05743d551 63 }
Sissors 2:9af05743d551 64 #endif /* _USE_LFN */
Sissors 2:9af05743d551 65 }
Sissors 2:9af05743d551 66
Sissors 2:9af05743d551 67 void FATDirHandle::rewinddir() {
Sissors 2:9af05743d551 68 dir.index = 0;
Sissors 2:9af05743d551 69 }
Sissors 2:9af05743d551 70
Sissors 2:9af05743d551 71 off_t FATDirHandle::telldir() {
Sissors 2:9af05743d551 72 return dir.index;
Sissors 2:9af05743d551 73 }
Sissors 2:9af05743d551 74
Sissors 2:9af05743d551 75 void FATDirHandle::seekdir(off_t location) {
Sissors 2:9af05743d551 76 dir.index = location;
Sissors 2:9af05743d551 77 }
Sissors 2:9af05743d551 78