takashi kadono / Mbed OS Nucleo446_SSD1331

Color Oled(SSD1331) connect to STMicroelectronics Nucleo-F466

Dependencies:   ssd1331

mbed-os/platform/FileBase.cpp@3:f3764f852aa8, 2018-10-11 (annotated)

Committer:
kadonotakashi
Date:
Thu Oct 11 02:27:46 2018 +0000
Revision:
3:f3764f852aa8
Parent:
0:8fdf9a60065b 
Nucreo 446 + SSD1331 test version;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
kadonotakashi 0:8fdf9a60065b 1 /* mbed Microcontroller Library
kadonotakashi 0:8fdf9a60065b 2 * Copyright (c) 2006-2013 ARM Limited
kadonotakashi 0:8fdf9a60065b 3 *
kadonotakashi 0:8fdf9a60065b 4 * Licensed under the Apache License, Version 2.0 (the "License");
kadonotakashi 0:8fdf9a60065b 5 * you may not use this file except in compliance with the License.
kadonotakashi 0:8fdf9a60065b 6 * You may obtain a copy of the License at
kadonotakashi 0:8fdf9a60065b 7 *
kadonotakashi 0:8fdf9a60065b 8 * http://www.apache.org/licenses/LICENSE-2.0
kadonotakashi 0:8fdf9a60065b 9 *
kadonotakashi 0:8fdf9a60065b 10 * Unless required by applicable law or agreed to in writing, software
kadonotakashi 0:8fdf9a60065b 11 * distributed under the License is distributed on an "AS IS" BASIS,
kadonotakashi 0:8fdf9a60065b 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
kadonotakashi 0:8fdf9a60065b 13 * See the License for the specific language governing permissions and
kadonotakashi 0:8fdf9a60065b 14 * limitations under the License.
kadonotakashi 0:8fdf9a60065b 15 */
kadonotakashi 0:8fdf9a60065b 16 #include <cstring>
kadonotakashi 0:8fdf9a60065b 17
kadonotakashi 0:8fdf9a60065b 18 #include "platform/FileBase.h"
kadonotakashi 0:8fdf9a60065b 19 #include "platform/FileLike.h"
kadonotakashi 0:8fdf9a60065b 20 #include "platform/FileHandle.h"
kadonotakashi 0:8fdf9a60065b 21
kadonotakashi 0:8fdf9a60065b 22 namespace mbed {
kadonotakashi 0:8fdf9a60065b 23
kadonotakashi 0:8fdf9a60065b 24 FileBase *FileBase::_head = NULL;
kadonotakashi 0:8fdf9a60065b 25 SingletonPtr<PlatformMutex> FileBase::_mutex;
kadonotakashi 0:8fdf9a60065b 26 FileBase *FileBase::_default = NULL;
kadonotakashi 0:8fdf9a60065b 27
kadonotakashi 0:8fdf9a60065b 28 FileBase::FileBase(const char *name, PathType t) : _next(NULL),
kadonotakashi 0:8fdf9a60065b 29 _name(name),
kadonotakashi 0:8fdf9a60065b 30 _path_type(t)
kadonotakashi 0:8fdf9a60065b 31 {
kadonotakashi 0:8fdf9a60065b 32 _mutex->lock();
kadonotakashi 0:8fdf9a60065b 33 if (name != NULL) {
kadonotakashi 0:8fdf9a60065b 34 // put this object at head of the list
kadonotakashi 0:8fdf9a60065b 35 _next = _head;
kadonotakashi 0:8fdf9a60065b 36 _head = this;
kadonotakashi 0:8fdf9a60065b 37 } else {
kadonotakashi 0:8fdf9a60065b 38 _next = NULL;
kadonotakashi 0:8fdf9a60065b 39 }
kadonotakashi 0:8fdf9a60065b 40 _mutex->unlock();
kadonotakashi 0:8fdf9a60065b 41 }
kadonotakashi 0:8fdf9a60065b 42
kadonotakashi 0:8fdf9a60065b 43 FileBase::~FileBase()
kadonotakashi 0:8fdf9a60065b 44 {
kadonotakashi 0:8fdf9a60065b 45 _mutex->lock();
kadonotakashi 0:8fdf9a60065b 46 if (_name != NULL) {
kadonotakashi 0:8fdf9a60065b 47 // remove this object from the list
kadonotakashi 0:8fdf9a60065b 48 if (_head == this) { // first in the list, so just drop me
kadonotakashi 0:8fdf9a60065b 49 _head = _next;
kadonotakashi 0:8fdf9a60065b 50 } else { // find the object before me, then drop me
kadonotakashi 0:8fdf9a60065b 51 FileBase *p = _head;
kadonotakashi 0:8fdf9a60065b 52 while (p->_next != this) {
kadonotakashi 0:8fdf9a60065b 53 p = p->_next;
kadonotakashi 0:8fdf9a60065b 54 }
kadonotakashi 0:8fdf9a60065b 55 p->_next = _next;
kadonotakashi 0:8fdf9a60065b 56 }
kadonotakashi 0:8fdf9a60065b 57 }
kadonotakashi 0:8fdf9a60065b 58
kadonotakashi 0:8fdf9a60065b 59 if (_default == this) {
kadonotakashi 0:8fdf9a60065b 60 _default = NULL;
kadonotakashi 0:8fdf9a60065b 61 }
kadonotakashi 0:8fdf9a60065b 62
kadonotakashi 0:8fdf9a60065b 63 _mutex->unlock();
kadonotakashi 0:8fdf9a60065b 64
kadonotakashi 0:8fdf9a60065b 65 if (getPathType() == FilePathType) {
kadonotakashi 0:8fdf9a60065b 66 extern void remove_filehandle(FileHandle *file);
kadonotakashi 0:8fdf9a60065b 67 remove_filehandle(static_cast<FileLike *>(this));
kadonotakashi 0:8fdf9a60065b 68 }
kadonotakashi 0:8fdf9a60065b 69 }
kadonotakashi 0:8fdf9a60065b 70
kadonotakashi 0:8fdf9a60065b 71 void FileBase::set_as_default()
kadonotakashi 0:8fdf9a60065b 72 {
kadonotakashi 0:8fdf9a60065b 73 _mutex->lock();
kadonotakashi 0:8fdf9a60065b 74 _default = this;
kadonotakashi 0:8fdf9a60065b 75 _mutex->unlock();
kadonotakashi 0:8fdf9a60065b 76 }
kadonotakashi 0:8fdf9a60065b 77
kadonotakashi 0:8fdf9a60065b 78 FileBase *FileBase::lookup(const char *name, unsigned int len)
kadonotakashi 0:8fdf9a60065b 79 {
kadonotakashi 0:8fdf9a60065b 80 _mutex->lock();
kadonotakashi 0:8fdf9a60065b 81 FileBase *p = _head;
kadonotakashi 0:8fdf9a60065b 82 while (p != NULL) {
kadonotakashi 0:8fdf9a60065b 83 /* Check that p->_name matches name and is the correct length */
kadonotakashi 0:8fdf9a60065b 84 if (p->_name != NULL && len == std::strlen(p->_name) && std::memcmp(p->_name, name, len) == 0) {
kadonotakashi 0:8fdf9a60065b 85 _mutex->unlock();
kadonotakashi 0:8fdf9a60065b 86 return p;
kadonotakashi 0:8fdf9a60065b 87 }
kadonotakashi 0:8fdf9a60065b 88 p = p->_next;
kadonotakashi 0:8fdf9a60065b 89 }
kadonotakashi 0:8fdf9a60065b 90 if (len == (sizeof "default") - 1 && std::memcmp("default", name, len) == 0) {
kadonotakashi 0:8fdf9a60065b 91 return _default;
kadonotakashi 0:8fdf9a60065b 92 }
kadonotakashi 0:8fdf9a60065b 93 _mutex->unlock();
kadonotakashi 0:8fdf9a60065b 94 return NULL;
kadonotakashi 0:8fdf9a60065b 95 }
kadonotakashi 0:8fdf9a60065b 96
kadonotakashi 0:8fdf9a60065b 97 FileBase *FileBase::get(int n)
kadonotakashi 0:8fdf9a60065b 98 {
kadonotakashi 0:8fdf9a60065b 99 _mutex->lock();
kadonotakashi 0:8fdf9a60065b 100 FileBase *p = _head;
kadonotakashi 0:8fdf9a60065b 101 int m = 0;
kadonotakashi 0:8fdf9a60065b 102 while (p != NULL) {
kadonotakashi 0:8fdf9a60065b 103 if (m == n) {
kadonotakashi 0:8fdf9a60065b 104 _mutex->unlock();
kadonotakashi 0:8fdf9a60065b 105 return p;
kadonotakashi 0:8fdf9a60065b 106 }
kadonotakashi 0:8fdf9a60065b 107
kadonotakashi 0:8fdf9a60065b 108 m++;
kadonotakashi 0:8fdf9a60065b 109 p = p->_next;
kadonotakashi 0:8fdf9a60065b 110 }
kadonotakashi 0:8fdf9a60065b 111 _mutex->unlock();
kadonotakashi 0:8fdf9a60065b 112 return NULL;
kadonotakashi 0:8fdf9a60065b 113 }
kadonotakashi 0:8fdf9a60065b 114
kadonotakashi 0:8fdf9a60065b 115 const char *FileBase::getName(void)
kadonotakashi 0:8fdf9a60065b 116 {
kadonotakashi 0:8fdf9a60065b 117 // Constant read so no lock needed
kadonotakashi 0:8fdf9a60065b 118 return _name;
kadonotakashi 0:8fdf9a60065b 119 }
kadonotakashi 0:8fdf9a60065b 120
kadonotakashi 0:8fdf9a60065b 121 PathType FileBase::getPathType(void)
kadonotakashi 0:8fdf9a60065b 122 {
kadonotakashi 0:8fdf9a60065b 123 // Constant read so no lock needed
kadonotakashi 0:8fdf9a60065b 124 return _path_type;
kadonotakashi 0:8fdf9a60065b 125 }
kadonotakashi 0:8fdf9a60065b 126
kadonotakashi 0:8fdf9a60065b 127 } // namespace mbed
kadonotakashi 0:8fdf9a60065b 128