Ticker.cpp

00001 /* mbed Microcontroller Library
00002  * Copyright (c) 2006-2013 ARM Limited
00003  *
00004  * Licensed under the Apache License, Version 2.0 (the "License");
00005  * you may not use this file except in compliance with the License.
00006  * You may obtain a copy of the License at
00007  *
00008  *     http://www.apache.org/licenses/LICENSE-2.0
00009  *
00010  * Unless required by applicable law or agreed to in writing, software
00011  * distributed under the License is distributed on an "AS IS" BASIS,
00012  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00013  * See the License for the specific language governing permissions and
00014  * limitations under the License.
00015  */
00016 #include "drivers/Ticker.h"
00017 
00018 #include "drivers/TimerEvent.h"
00019 #include "platform/FunctionPointer.h"
00020 #include "hal/ticker_api.h"
00021 #include "platform/critical.h"
00022 
00023 namespace mbed {
00024 
00025 void Ticker::detach() {
00026     core_util_critical_section_enter();
00027     remove();
00028     _function.attach(0);
00029     core_util_critical_section_exit();
00030 }
00031 
00032 void Ticker::setup(timestamp_t t) {
00033     core_util_critical_section_enter();
00034     remove();
00035     _delay = t;
00036     insert(_delay + ticker_read(_ticker_data));
00037     core_util_critical_section_exit();
00038 }
00039 
00040 void Ticker::handler() {
00041     insert(event.timestamp + _delay);
00042     _function.call();
00043 }
00044 
00045 } // namespace mbed