Johannes Stratmann / mbed-dev

added prescaler for 16 bit pwm in LPC1347 target

Fork of mbed-dev by mbed official

common/FileBase.cpp@147:ba84b7dc41a7, 2016-09-10 (annotated)

Committer:
JojoS
Date:
Sat Sep 10 15:32:04 2016 +0000
Revision:
147:ba84b7dc41a7
Parent:
144:ef7eb2e8f9f7 
added prescaler for 16 bit timers (solution as in LPC11xx), default prescaler 31 for max 28 ms period time

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 144:ef7eb2e8f9f7 1 /* mbed Microcontroller Library
<> 144:ef7eb2e8f9f7 2 * Copyright (c) 2006-2013 ARM Limited
<> 144:ef7eb2e8f9f7 3 *
<> 144:ef7eb2e8f9f7 4 * Licensed under the Apache License, Version 2.0 (the "License");
<> 144:ef7eb2e8f9f7 5 * you may not use this file except in compliance with the License.
<> 144:ef7eb2e8f9f7 6 * You may obtain a copy of the License at
<> 144:ef7eb2e8f9f7 7 *
<> 144:ef7eb2e8f9f7 8 * http://www.apache.org/licenses/LICENSE-2.0
<> 144:ef7eb2e8f9f7 9 *
<> 144:ef7eb2e8f9f7 10 * Unless required by applicable law or agreed to in writing, software
<> 144:ef7eb2e8f9f7 11 * distributed under the License is distributed on an "AS IS" BASIS,
<> 144:ef7eb2e8f9f7 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
<> 144:ef7eb2e8f9f7 13 * See the License for the specific language governing permissions and
<> 144:ef7eb2e8f9f7 14 * limitations under the License.
<> 144:ef7eb2e8f9f7 15 */
<> 144:ef7eb2e8f9f7 16 #include "FileBase.h"
<> 144:ef7eb2e8f9f7 17
<> 144:ef7eb2e8f9f7 18 namespace mbed {
<> 144:ef7eb2e8f9f7 19
<> 144:ef7eb2e8f9f7 20 FileBase *FileBase::_head = NULL;
<> 144:ef7eb2e8f9f7 21 SingletonPtr<PlatformMutex> FileBase::_mutex;
<> 144:ef7eb2e8f9f7 22
<> 144:ef7eb2e8f9f7 23 FileBase::FileBase(const char *name, PathType t) : _next(NULL),
<> 144:ef7eb2e8f9f7 24 _name(name),
<> 144:ef7eb2e8f9f7 25 _path_type(t) {
<> 144:ef7eb2e8f9f7 26 _mutex->lock();
<> 144:ef7eb2e8f9f7 27 if (name != NULL) {
<> 144:ef7eb2e8f9f7 28 // put this object at head of the list
<> 144:ef7eb2e8f9f7 29 _next = _head;
<> 144:ef7eb2e8f9f7 30 _head = this;
<> 144:ef7eb2e8f9f7 31 } else {
<> 144:ef7eb2e8f9f7 32 _next = NULL;
<> 144:ef7eb2e8f9f7 33 }
<> 144:ef7eb2e8f9f7 34 _mutex->unlock();
<> 144:ef7eb2e8f9f7 35 }
<> 144:ef7eb2e8f9f7 36
<> 144:ef7eb2e8f9f7 37 FileBase::~FileBase() {
<> 144:ef7eb2e8f9f7 38 _mutex->lock();
<> 144:ef7eb2e8f9f7 39 if (_name != NULL) {
<> 144:ef7eb2e8f9f7 40 // remove this object from the list
<> 144:ef7eb2e8f9f7 41 if (_head == this) { // first in the list, so just drop me
<> 144:ef7eb2e8f9f7 42 _head = _next;
<> 144:ef7eb2e8f9f7 43 } else { // find the object before me, then drop me
<> 144:ef7eb2e8f9f7 44 FileBase *p = _head;
<> 144:ef7eb2e8f9f7 45 while (p->_next != this) {
<> 144:ef7eb2e8f9f7 46 p = p->_next;
<> 144:ef7eb2e8f9f7 47 }
<> 144:ef7eb2e8f9f7 48 p->_next = _next;
<> 144:ef7eb2e8f9f7 49 }
<> 144:ef7eb2e8f9f7 50 }
<> 144:ef7eb2e8f9f7 51 _mutex->unlock();
<> 144:ef7eb2e8f9f7 52 }
<> 144:ef7eb2e8f9f7 53
<> 144:ef7eb2e8f9f7 54 FileBase *FileBase::lookup(const char *name, unsigned int len) {
<> 144:ef7eb2e8f9f7 55 _mutex->lock();
<> 144:ef7eb2e8f9f7 56 FileBase *p = _head;
<> 144:ef7eb2e8f9f7 57 while (p != NULL) {
<> 144:ef7eb2e8f9f7 58 /* Check that p->_name matches name and is the correct length */
<> 144:ef7eb2e8f9f7 59 if (p->_name != NULL && std::strncmp(p->_name, name, len) == 0 && std::strlen(p->_name) == len) {
<> 144:ef7eb2e8f9f7 60 _mutex->unlock();
<> 144:ef7eb2e8f9f7 61 return p;
<> 144:ef7eb2e8f9f7 62 }
<> 144:ef7eb2e8f9f7 63 p = p->_next;
<> 144:ef7eb2e8f9f7 64 }
<> 144:ef7eb2e8f9f7 65 _mutex->unlock();
<> 144:ef7eb2e8f9f7 66 return NULL;
<> 144:ef7eb2e8f9f7 67 }
<> 144:ef7eb2e8f9f7 68
<> 144:ef7eb2e8f9f7 69 FileBase *FileBase::get(int n) {
<> 144:ef7eb2e8f9f7 70 _mutex->lock();
<> 144:ef7eb2e8f9f7 71 FileBase *p = _head;
<> 144:ef7eb2e8f9f7 72 int m = 0;
<> 144:ef7eb2e8f9f7 73 while (p != NULL) {
<> 144:ef7eb2e8f9f7 74 if (m == n) {
<> 144:ef7eb2e8f9f7 75 _mutex->unlock();
<> 144:ef7eb2e8f9f7 76 return p;
<> 144:ef7eb2e8f9f7 77 }
<> 144:ef7eb2e8f9f7 78
<> 144:ef7eb2e8f9f7 79 m++;
<> 144:ef7eb2e8f9f7 80 p = p->_next;
<> 144:ef7eb2e8f9f7 81 }
<> 144:ef7eb2e8f9f7 82 _mutex->unlock();
<> 144:ef7eb2e8f9f7 83 return NULL;
<> 144:ef7eb2e8f9f7 84 }
<> 144:ef7eb2e8f9f7 85
<> 144:ef7eb2e8f9f7 86 const char* FileBase::getName(void) {
<> 144:ef7eb2e8f9f7 87 // Constant read so no lock needed
<> 144:ef7eb2e8f9f7 88 return _name;
<> 144:ef7eb2e8f9f7 89 }
<> 144:ef7eb2e8f9f7 90
<> 144:ef7eb2e8f9f7 91 PathType FileBase::getPathType(void) {
<> 144:ef7eb2e8f9f7 92 // Constant read so no lock needed
<> 144:ef7eb2e8f9f7 93 return _path_type;
<> 144:ef7eb2e8f9f7 94 }
<> 144:ef7eb2e8f9f7 95
<> 144:ef7eb2e8f9f7 96 } // namespace mbed
<> 144:ef7eb2e8f9f7 97