Marco Mayer / Mbed OS Queue

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mbed-os/features/filesystem/Dir.cpp@0:6bf0743ece18, 2020-03-28 (annotated)

Committer:
demayer
Date:
Sat Mar 28 15:28:19 2020 +0000
Revision:
0:6bf0743ece18
IMU Thread with an event-queue running parallel to handle tasks like a 5 times blinking LED. Button with interrupt detected.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
demayer 0:6bf0743ece18 1 /* mbed Microcontroller Library
demayer 0:6bf0743ece18 2 * Copyright (c) 2015 ARM Limited
demayer 0:6bf0743ece18 3 *
demayer 0:6bf0743ece18 4 * Licensed under the Apache License, Version 2.0 (the "License");
demayer 0:6bf0743ece18 5 * you may not use this file except in compliance with the License.
demayer 0:6bf0743ece18 6 * You may obtain a copy of the License at
demayer 0:6bf0743ece18 7 *
demayer 0:6bf0743ece18 8 * http://www.apache.org/licenses/LICENSE-2.0
demayer 0:6bf0743ece18 9 *
demayer 0:6bf0743ece18 10 * Unless required by applicable law or agreed to in writing, software
demayer 0:6bf0743ece18 11 * distributed under the License is distributed on an "AS IS" BASIS,
demayer 0:6bf0743ece18 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
demayer 0:6bf0743ece18 13 * See the License for the specific language governing permissions and
demayer 0:6bf0743ece18 14 * limitations under the License.
demayer 0:6bf0743ece18 15 */
demayer 0:6bf0743ece18 16
demayer 0:6bf0743ece18 17 #include "Dir.h"
demayer 0:6bf0743ece18 18 #include "mbed.h"
demayer 0:6bf0743ece18 19 #include <errno.h>
demayer 0:6bf0743ece18 20
demayer 0:6bf0743ece18 21
demayer 0:6bf0743ece18 22 Dir::Dir()
demayer 0:6bf0743ece18 23 : _fs(0), _dir(0)
demayer 0:6bf0743ece18 24 {
demayer 0:6bf0743ece18 25 }
demayer 0:6bf0743ece18 26
demayer 0:6bf0743ece18 27 Dir::Dir(FileSystem *fs, const char *path)
demayer 0:6bf0743ece18 28 : _fs(0), _dir(0)
demayer 0:6bf0743ece18 29 {
demayer 0:6bf0743ece18 30 open(fs, path);
demayer 0:6bf0743ece18 31 }
demayer 0:6bf0743ece18 32
demayer 0:6bf0743ece18 33 Dir::~Dir()
demayer 0:6bf0743ece18 34 {
demayer 0:6bf0743ece18 35 if (_fs) {
demayer 0:6bf0743ece18 36 close();
demayer 0:6bf0743ece18 37 }
demayer 0:6bf0743ece18 38 }
demayer 0:6bf0743ece18 39
demayer 0:6bf0743ece18 40 int Dir::open(FileSystem *fs, const char *path)
demayer 0:6bf0743ece18 41 {
demayer 0:6bf0743ece18 42 if (_fs) {
demayer 0:6bf0743ece18 43 return -EINVAL;
demayer 0:6bf0743ece18 44 }
demayer 0:6bf0743ece18 45
demayer 0:6bf0743ece18 46 int err = fs->dir_open(&_dir, path);
demayer 0:6bf0743ece18 47 if (!err) {
demayer 0:6bf0743ece18 48 _fs = fs;
demayer 0:6bf0743ece18 49 }
demayer 0:6bf0743ece18 50
demayer 0:6bf0743ece18 51 return err;
demayer 0:6bf0743ece18 52 }
demayer 0:6bf0743ece18 53
demayer 0:6bf0743ece18 54 int Dir::close()
demayer 0:6bf0743ece18 55 {
demayer 0:6bf0743ece18 56 if (!_fs) {
demayer 0:6bf0743ece18 57 return -EINVAL;
demayer 0:6bf0743ece18 58 }
demayer 0:6bf0743ece18 59
demayer 0:6bf0743ece18 60 int err = _fs->dir_close(_dir);
demayer 0:6bf0743ece18 61 _fs = 0;
demayer 0:6bf0743ece18 62 return err;
demayer 0:6bf0743ece18 63 }
demayer 0:6bf0743ece18 64
demayer 0:6bf0743ece18 65 ssize_t Dir::read(struct dirent *ent)
demayer 0:6bf0743ece18 66 {
demayer 0:6bf0743ece18 67 MBED_ASSERT(_fs);
demayer 0:6bf0743ece18 68 memset(ent, 0, sizeof(struct dirent));
demayer 0:6bf0743ece18 69 return _fs->dir_read(_dir, ent);
demayer 0:6bf0743ece18 70 }
demayer 0:6bf0743ece18 71
demayer 0:6bf0743ece18 72 void Dir::seek(off_t offset)
demayer 0:6bf0743ece18 73 {
demayer 0:6bf0743ece18 74 MBED_ASSERT(_fs);
demayer 0:6bf0743ece18 75 return _fs->dir_seek(_dir, offset);
demayer 0:6bf0743ece18 76 }
demayer 0:6bf0743ece18 77
demayer 0:6bf0743ece18 78 off_t Dir::tell()
demayer 0:6bf0743ece18 79 {
demayer 0:6bf0743ece18 80 MBED_ASSERT(_fs);
demayer 0:6bf0743ece18 81 return _fs->dir_tell(_dir);
demayer 0:6bf0743ece18 82 }
demayer 0:6bf0743ece18 83
demayer 0:6bf0743ece18 84 void Dir::rewind()
demayer 0:6bf0743ece18 85 {
demayer 0:6bf0743ece18 86 MBED_ASSERT(_fs);
demayer 0:6bf0743ece18 87 return _fs->dir_rewind(_dir);
demayer 0:6bf0743ece18 88 }
demayer 0:6bf0743ece18 89
demayer 0:6bf0743ece18 90 size_t Dir::size()
demayer 0:6bf0743ece18 91 {
demayer 0:6bf0743ece18 92 MBED_ASSERT(_fs);
demayer 0:6bf0743ece18 93 return _fs->dir_size(_dir);
demayer 0:6bf0743ece18 94 }