PHung Tung / SRC_STM32F7

SPKT

Dependents:   WAV

common/Timer.cpp@0:e87aa4c49e95, 2019-06-04 (annotated)

Committer:
phungductung
Date:
Tue Jun 04 21:51:46 2019 +0000
Revision:
0:e87aa4c49e95
libray

Who changed what in which revision?

UserRevisionLine numberNew contents of line
phungductung 0:e87aa4c49e95 1 /* mbed Microcontroller Library
phungductung 0:e87aa4c49e95 2 * Copyright (c) 2006-2013 ARM Limited
phungductung 0:e87aa4c49e95 3 *
phungductung 0:e87aa4c49e95 4 * Licensed under the Apache License, Version 2.0 (the "License");
phungductung 0:e87aa4c49e95 5 * you may not use this file except in compliance with the License.
phungductung 0:e87aa4c49e95 6 * You may obtain a copy of the License at
phungductung 0:e87aa4c49e95 7 *
phungductung 0:e87aa4c49e95 8 * http://www.apache.org/licenses/LICENSE-2.0
phungductung 0:e87aa4c49e95 9 *
phungductung 0:e87aa4c49e95 10 * Unless required by applicable law or agreed to in writing, software
phungductung 0:e87aa4c49e95 11 * distributed under the License is distributed on an "AS IS" BASIS,
phungductung 0:e87aa4c49e95 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
phungductung 0:e87aa4c49e95 13 * See the License for the specific language governing permissions and
phungductung 0:e87aa4c49e95 14 * limitations under the License.
phungductung 0:e87aa4c49e95 15 */
phungductung 0:e87aa4c49e95 16 #include "Timer.h"
phungductung 0:e87aa4c49e95 17 #include "ticker_api.h"
phungductung 0:e87aa4c49e95 18 #include "us_ticker_api.h"
phungductung 0:e87aa4c49e95 19
phungductung 0:e87aa4c49e95 20 namespace mbed {
phungductung 0:e87aa4c49e95 21
phungductung 0:e87aa4c49e95 22 Timer::Timer() : _running(), _start(), _time(), _ticker_data(get_us_ticker_data()) {
phungductung 0:e87aa4c49e95 23 reset();
phungductung 0:e87aa4c49e95 24 }
phungductung 0:e87aa4c49e95 25
phungductung 0:e87aa4c49e95 26 Timer::Timer(const ticker_data_t *data) : _running(), _start(), _time(), _ticker_data(data) {
phungductung 0:e87aa4c49e95 27 reset();
phungductung 0:e87aa4c49e95 28 }
phungductung 0:e87aa4c49e95 29
phungductung 0:e87aa4c49e95 30 void Timer::start() {
phungductung 0:e87aa4c49e95 31 if (!_running) {
phungductung 0:e87aa4c49e95 32 _start = ticker_read(_ticker_data);
phungductung 0:e87aa4c49e95 33 _running = 1;
phungductung 0:e87aa4c49e95 34 }
phungductung 0:e87aa4c49e95 35 }
phungductung 0:e87aa4c49e95 36
phungductung 0:e87aa4c49e95 37 void Timer::stop() {
phungductung 0:e87aa4c49e95 38 _time += slicetime();
phungductung 0:e87aa4c49e95 39 _running = 0;
phungductung 0:e87aa4c49e95 40 }
phungductung 0:e87aa4c49e95 41
phungductung 0:e87aa4c49e95 42 int Timer::read_us() {
phungductung 0:e87aa4c49e95 43 return _time + slicetime();
phungductung 0:e87aa4c49e95 44 }
phungductung 0:e87aa4c49e95 45
phungductung 0:e87aa4c49e95 46 float Timer::read() {
phungductung 0:e87aa4c49e95 47 return (float)read_us() / 1000000.0f;
phungductung 0:e87aa4c49e95 48 }
phungductung 0:e87aa4c49e95 49
phungductung 0:e87aa4c49e95 50 int Timer::read_ms() {
phungductung 0:e87aa4c49e95 51 return read_us() / 1000;
phungductung 0:e87aa4c49e95 52 }
phungductung 0:e87aa4c49e95 53
phungductung 0:e87aa4c49e95 54 int Timer::slicetime() {
phungductung 0:e87aa4c49e95 55 if (_running) {
phungductung 0:e87aa4c49e95 56 return ticker_read(_ticker_data) - _start;
phungductung 0:e87aa4c49e95 57 } else {
phungductung 0:e87aa4c49e95 58 return 0;
phungductung 0:e87aa4c49e95 59 }
phungductung 0:e87aa4c49e95 60 }
phungductung 0:e87aa4c49e95 61
phungductung 0:e87aa4c49e95 62 void Timer::reset() {
phungductung 0:e87aa4c49e95 63 _start = ticker_read(_ticker_data);
phungductung 0:e87aa4c49e95 64 _time = 0;
phungductung 0:e87aa4c49e95 65 }
phungductung 0:e87aa4c49e95 66
phungductung 0:e87aa4c49e95 67 #ifdef MBED_OPERATORS
phungductung 0:e87aa4c49e95 68 Timer::operator float() {
phungductung 0:e87aa4c49e95 69 return read();
phungductung 0:e87aa4c49e95 70 }
phungductung 0:e87aa4c49e95 71 #endif
phungductung 0:e87aa4c49e95 72
phungductung 0:e87aa4c49e95 73 } // namespace mbed