TimerEvent.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/TimerEvent.h"
00017 #include "cmsis.h"
00018 
00019 #include <stddef.h>
00020 #include "hal/ticker_api.h"
00021 #include "hal/us_ticker_api.h"
00022 
00023 namespace mbed {
00024 
00025 TimerEvent::TimerEvent() : event(), _ticker_data(get_us_ticker_data())
00026 {
00027     ticker_set_handler(_ticker_data, (&TimerEvent::irq));
00028 }
00029 
00030 TimerEvent::TimerEvent(const ticker_data_t *data) : event(), _ticker_data(data)
00031 {
00032     ticker_set_handler(_ticker_data, (&TimerEvent::irq));
00033 }
00034 
00035 void TimerEvent::irq(uint32_t id)
00036 {
00037     TimerEvent *timer_event = (TimerEvent *)id;
00038     timer_event->handler();
00039 }
00040 
00041 TimerEvent::~TimerEvent()
00042 {
00043     remove();
00044 }
00045 
00046 // insert in to linked list
00047 void TimerEvent::insert(timestamp_t timestamp)
00048 {
00049     ticker_insert_event(_ticker_data, &event, timestamp, (uint32_t)this);
00050 }
00051 
00052 void TimerEvent::insert_absolute(us_timestamp_t timestamp)
00053 {
00054     ticker_insert_event_us(_ticker_data, &event, timestamp, (uint32_t)this);
00055 }
00056 
00057 void TimerEvent::remove()
00058 {
00059     ticker_remove_event(_ticker_data, &event);
00060 }
00061 
00062 } // namespace mbed