Kazuki Yamamoto / USBFileSystem

[ FORK ] USBFileSytem; fork from sissors/USBFileSystem

Dependents:   USBMSD_CDC_11U35test

Fork of USBFileSystem by Erik -

FATFileSystem/FATFileHandle.cpp@7:da1f3328a496, 2015-01-18 (annotated)

Committer:
Sissors
Date:
Sun Jan 18 21:31:55 2015 +0000
Revision:
7:da1f3328a496
Updated USBDevice and added count argument

Who changed what in which revision?

UserRevisionLine numberNew contents of line
Sissors 7:da1f3328a496 1 /* mbed Microcontroller Library
Sissors 7:da1f3328a496 2 * Copyright (c) 2006-2012 ARM Limited
Sissors 7:da1f3328a496 3 *
Sissors 7:da1f3328a496 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
Sissors 7:da1f3328a496 5 * of this software and associated documentation files (the "Software"), to deal
Sissors 7:da1f3328a496 6 * in the Software without restriction, including without limitation the rights
Sissors 7:da1f3328a496 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
Sissors 7:da1f3328a496 8 * copies of the Software, and to permit persons to whom the Software is
Sissors 7:da1f3328a496 9 * furnished to do so, subject to the following conditions:
Sissors 7:da1f3328a496 10 *
Sissors 7:da1f3328a496 11 * The above copyright notice and this permission notice shall be included in
Sissors 7:da1f3328a496 12 * all copies or substantial portions of the Software.
Sissors 7:da1f3328a496 13 *
Sissors 7:da1f3328a496 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
Sissors 7:da1f3328a496 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
Sissors 7:da1f3328a496 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
Sissors 7:da1f3328a496 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
Sissors 7:da1f3328a496 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
Sissors 7:da1f3328a496 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
Sissors 7:da1f3328a496 20 * SOFTWARE.
Sissors 7:da1f3328a496 21 */
Sissors 7:da1f3328a496 22 #include "ff.h"
Sissors 7:da1f3328a496 23 #include "ffconf.h"
Sissors 7:da1f3328a496 24 #include "mbed_debug.h"
Sissors 7:da1f3328a496 25
Sissors 7:da1f3328a496 26 #include "FATFileHandle.h"
Sissors 7:da1f3328a496 27
Sissors 7:da1f3328a496 28 FATFileHandle::FATFileHandle(FIL fh) {
Sissors 7:da1f3328a496 29 _fh = fh;
Sissors 7:da1f3328a496 30 }
Sissors 7:da1f3328a496 31
Sissors 7:da1f3328a496 32 int FATFileHandle::close() {
Sissors 7:da1f3328a496 33 int retval = f_close(&_fh);
Sissors 7:da1f3328a496 34 delete this;
Sissors 7:da1f3328a496 35 return retval;
Sissors 7:da1f3328a496 36 }
Sissors 7:da1f3328a496 37
Sissors 7:da1f3328a496 38 ssize_t FATFileHandle::write(const void* buffer, size_t length) {
Sissors 7:da1f3328a496 39 UINT n;
Sissors 7:da1f3328a496 40 FRESULT res = f_write(&_fh, buffer, length, &n);
Sissors 7:da1f3328a496 41 if (res) {
Sissors 7:da1f3328a496 42 debug_if(FFS_DBG, "f_write() failed: %d", res);
Sissors 7:da1f3328a496 43 return -1;
Sissors 7:da1f3328a496 44 }
Sissors 7:da1f3328a496 45 return n;
Sissors 7:da1f3328a496 46 }
Sissors 7:da1f3328a496 47
Sissors 7:da1f3328a496 48 ssize_t FATFileHandle::read(void* buffer, size_t length) {
Sissors 7:da1f3328a496 49 debug_if(FFS_DBG, "read(%d)\n", length);
Sissors 7:da1f3328a496 50 UINT n;
Sissors 7:da1f3328a496 51 FRESULT res = f_read(&_fh, buffer, length, &n);
Sissors 7:da1f3328a496 52 if (res) {
Sissors 7:da1f3328a496 53 debug_if(FFS_DBG, "f_read() failed: %d\n", res);
Sissors 7:da1f3328a496 54 return -1;
Sissors 7:da1f3328a496 55 }
Sissors 7:da1f3328a496 56 return n;
Sissors 7:da1f3328a496 57 }
Sissors 7:da1f3328a496 58
Sissors 7:da1f3328a496 59 int FATFileHandle::isatty() {
Sissors 7:da1f3328a496 60 return 0;
Sissors 7:da1f3328a496 61 }
Sissors 7:da1f3328a496 62
Sissors 7:da1f3328a496 63 off_t FATFileHandle::lseek(off_t position, int whence) {
Sissors 7:da1f3328a496 64 if (whence == SEEK_END) {
Sissors 7:da1f3328a496 65 position += _fh.fsize;
Sissors 7:da1f3328a496 66 } else if(whence==SEEK_CUR) {
Sissors 7:da1f3328a496 67 position += _fh.fptr;
Sissors 7:da1f3328a496 68 }
Sissors 7:da1f3328a496 69 FRESULT res = f_lseek(&_fh, position);
Sissors 7:da1f3328a496 70 if (res) {
Sissors 7:da1f3328a496 71 debug_if(FFS_DBG, "lseek failed: %d\n", res);
Sissors 7:da1f3328a496 72 return -1;
Sissors 7:da1f3328a496 73 } else {
Sissors 7:da1f3328a496 74 debug_if(FFS_DBG, "lseek OK, returning %i\n", _fh.fptr);
Sissors 7:da1f3328a496 75 return _fh.fptr;
Sissors 7:da1f3328a496 76 }
Sissors 7:da1f3328a496 77 }
Sissors 7:da1f3328a496 78
Sissors 7:da1f3328a496 79 int FATFileHandle::fsync() {
Sissors 7:da1f3328a496 80 FRESULT res = f_sync(&_fh);
Sissors 7:da1f3328a496 81 if (res) {
Sissors 7:da1f3328a496 82 debug_if(FFS_DBG, "f_sync() failed: %d\n", res);
Sissors 7:da1f3328a496 83 return -1;
Sissors 7:da1f3328a496 84 }
Sissors 7:da1f3328a496 85 return 0;
Sissors 7:da1f3328a496 86 }
Sissors 7:da1f3328a496 87
Sissors 7:da1f3328a496 88 off_t FATFileHandle::flen() {
Sissors 7:da1f3328a496 89 return _fh.fsize;
Sissors 7:da1f3328a496 90 }