Renesas / USBHost_custom_Addiso

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Dependents:   USBHostC270_example_GR-PEACH USBHostDac_example USBHostDac_Audio_in_out

Fork of USBHost_custom by Renesas

FATFileSystem/FATFileHandle.cpp@37:22e8f744bbad, 2017-02-28 (annotated)

Committer:
dkato
Date:
Tue Feb 28 02:51:39 2017 +0000
Revision:
37:22e8f744bbad
Tentative change for FATFileSystem revision error.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
dkato 37:22e8f744bbad 1 /* mbed Microcontroller Library
dkato 37:22e8f744bbad 2 * Copyright (c) 2006-2012 ARM Limited
dkato 37:22e8f744bbad 3 *
dkato 37:22e8f744bbad 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
dkato 37:22e8f744bbad 5 * of this software and associated documentation files (the "Software"), to deal
dkato 37:22e8f744bbad 6 * in the Software without restriction, including without limitation the rights
dkato 37:22e8f744bbad 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
dkato 37:22e8f744bbad 8 * copies of the Software, and to permit persons to whom the Software is
dkato 37:22e8f744bbad 9 * furnished to do so, subject to the following conditions:
dkato 37:22e8f744bbad 10 *
dkato 37:22e8f744bbad 11 * The above copyright notice and this permission notice shall be included in
dkato 37:22e8f744bbad 12 * all copies or substantial portions of the Software.
dkato 37:22e8f744bbad 13 *
dkato 37:22e8f744bbad 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
dkato 37:22e8f744bbad 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
dkato 37:22e8f744bbad 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
dkato 37:22e8f744bbad 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
dkato 37:22e8f744bbad 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
dkato 37:22e8f744bbad 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
dkato 37:22e8f744bbad 20 * SOFTWARE.
dkato 37:22e8f744bbad 21 */
dkato 37:22e8f744bbad 22 #include "ff.h"
dkato 37:22e8f744bbad 23 #include "ffconf.h"
dkato 37:22e8f744bbad 24 #include "mbed_debug.h"
dkato 37:22e8f744bbad 25
dkato 37:22e8f744bbad 26 #include "FATFileHandle.h"
dkato 37:22e8f744bbad 27
dkato 37:22e8f744bbad 28 FATFileHandle::FATFileHandle(FIL fh) {
dkato 37:22e8f744bbad 29 _fh = fh;
dkato 37:22e8f744bbad 30 }
dkato 37:22e8f744bbad 31
dkato 37:22e8f744bbad 32 int FATFileHandle::close() {
dkato 37:22e8f744bbad 33 int retval = f_close(&_fh);
dkato 37:22e8f744bbad 34 delete this;
dkato 37:22e8f744bbad 35 return retval;
dkato 37:22e8f744bbad 36 }
dkato 37:22e8f744bbad 37
dkato 37:22e8f744bbad 38 ssize_t FATFileHandle::write(const void* buffer, size_t length) {
dkato 37:22e8f744bbad 39 UINT n;
dkato 37:22e8f744bbad 40 FRESULT res = f_write(&_fh, buffer, length, &n);
dkato 37:22e8f744bbad 41 if (res) {
dkato 37:22e8f744bbad 42 debug_if(FFS_DBG, "f_write() failed: %d", res);
dkato 37:22e8f744bbad 43 return -1;
dkato 37:22e8f744bbad 44 }
dkato 37:22e8f744bbad 45 return n;
dkato 37:22e8f744bbad 46 }
dkato 37:22e8f744bbad 47
dkato 37:22e8f744bbad 48 ssize_t FATFileHandle::read(void* buffer, size_t length) {
dkato 37:22e8f744bbad 49 debug_if(FFS_DBG, "read(%d)\n", length);
dkato 37:22e8f744bbad 50 UINT n;
dkato 37:22e8f744bbad 51 FRESULT res = f_read(&_fh, buffer, length, &n);
dkato 37:22e8f744bbad 52 if (res) {
dkato 37:22e8f744bbad 53 debug_if(FFS_DBG, "f_read() failed: %d\n", res);
dkato 37:22e8f744bbad 54 return -1;
dkato 37:22e8f744bbad 55 }
dkato 37:22e8f744bbad 56 return n;
dkato 37:22e8f744bbad 57 }
dkato 37:22e8f744bbad 58
dkato 37:22e8f744bbad 59 int FATFileHandle::isatty() {
dkato 37:22e8f744bbad 60 return 0;
dkato 37:22e8f744bbad 61 }
dkato 37:22e8f744bbad 62
dkato 37:22e8f744bbad 63 off_t FATFileHandle::lseek(off_t position, int whence) {
dkato 37:22e8f744bbad 64 if (whence == SEEK_END) {
dkato 37:22e8f744bbad 65 position += _fh.fsize;
dkato 37:22e8f744bbad 66 } else if(whence==SEEK_CUR) {
dkato 37:22e8f744bbad 67 position += _fh.fptr;
dkato 37:22e8f744bbad 68 }
dkato 37:22e8f744bbad 69 FRESULT res = f_lseek(&_fh, position);
dkato 37:22e8f744bbad 70 if (res) {
dkato 37:22e8f744bbad 71 debug_if(FFS_DBG, "lseek failed: %d\n", res);
dkato 37:22e8f744bbad 72 return -1;
dkato 37:22e8f744bbad 73 } else {
dkato 37:22e8f744bbad 74 debug_if(FFS_DBG, "lseek OK, returning %i\n", _fh.fptr);
dkato 37:22e8f744bbad 75 return _fh.fptr;
dkato 37:22e8f744bbad 76 }
dkato 37:22e8f744bbad 77 }
dkato 37:22e8f744bbad 78
dkato 37:22e8f744bbad 79 int FATFileHandle::fsync() {
dkato 37:22e8f744bbad 80 FRESULT res = f_sync(&_fh);
dkato 37:22e8f744bbad 81 if (res) {
dkato 37:22e8f744bbad 82 debug_if(FFS_DBG, "f_sync() failed: %d\n", res);
dkato 37:22e8f744bbad 83 return -1;
dkato 37:22e8f744bbad 84 }
dkato 37:22e8f744bbad 85 return 0;
dkato 37:22e8f744bbad 86 }
dkato 37:22e8f744bbad 87
dkato 37:22e8f744bbad 88 off_t FATFileHandle::flen() {
dkato 37:22e8f744bbad 89 return _fh.fsize;
dkato 37:22e8f744bbad 90 }