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/* mbed Microcontroller Library
* Copyright (c) 2006-2013 ARM Limited
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "Timer.h"
#include "ticker_api.h"
#include "us_ticker_api.h"
namespace mbed {
Timer::Timer() : _running(), _start(), _time(), _ticker_data(get_us_ticker_data()) {
reset();
}
Timer::Timer(const ticker_data_t *data) : _running(), _start(), _time(), _ticker_data(data) {
reset();
}
void Timer::start() {
if (!_running) {
_start = ticker_read(_ticker_data);
_running = 1;
}
}
void Timer::stop() {
_time += slicetime();
_running = 0;
}
int Timer::read_us() {
return _time + slicetime();
}
float Timer::read() {
return (float)read_us() / 1000000.0f;
}
int Timer::read_ms() {
return read_us() / 1000;
}
int Timer::slicetime() {
if (_running) {
return ticker_read(_ticker_data) - _start;
} else {
return 0;
}
}
void Timer::reset() {
_start = ticker_read(_ticker_data);
_time = 0;
}
#ifdef MBED_OPERATORS
Timer::operator float() {
return read();
}
#endif
} // namespace mbed