PHung Tung / DISCO-F746_WAV_PLAYER

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Dependencies:   F746_GUI SD_PlayerSkeleton F746_SAI_IO

SRC_STM32F7/common/Timer.cpp@0:8ede47d38d10, 2019-06-04 (annotated)

Committer:
phungductung
Date:
Tue Jun 04 21:37:21 2019 +0000
Revision:
0:8ede47d38d10
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Who changed what in which revision?

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phungductung 0:8ede47d38d10 1 /* mbed Microcontroller Library
phungductung 0:8ede47d38d10 2 * Copyright (c) 2006-2013 ARM Limited
phungductung 0:8ede47d38d10 3 *
phungductung 0:8ede47d38d10 4 * Licensed under the Apache License, Version 2.0 (the "License");
phungductung 0:8ede47d38d10 5 * you may not use this file except in compliance with the License.
phungductung 0:8ede47d38d10 6 * You may obtain a copy of the License at
phungductung 0:8ede47d38d10 7 *
phungductung 0:8ede47d38d10 8 * http://www.apache.org/licenses/LICENSE-2.0
phungductung 0:8ede47d38d10 9 *
phungductung 0:8ede47d38d10 10 * Unless required by applicable law or agreed to in writing, software
phungductung 0:8ede47d38d10 11 * distributed under the License is distributed on an "AS IS" BASIS,
phungductung 0:8ede47d38d10 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
phungductung 0:8ede47d38d10 13 * See the License for the specific language governing permissions and
phungductung 0:8ede47d38d10 14 * limitations under the License.
phungductung 0:8ede47d38d10 15 */
phungductung 0:8ede47d38d10 16 #include "Timer.h"
phungductung 0:8ede47d38d10 17 #include "ticker_api.h"
phungductung 0:8ede47d38d10 18 #include "us_ticker_api.h"
phungductung 0:8ede47d38d10 19
phungductung 0:8ede47d38d10 20 namespace mbed {
phungductung 0:8ede47d38d10 21
phungductung 0:8ede47d38d10 22 Timer::Timer() : _running(), _start(), _time(), _ticker_data(get_us_ticker_data()) {
phungductung 0:8ede47d38d10 23 reset();
phungductung 0:8ede47d38d10 24 }
phungductung 0:8ede47d38d10 25
phungductung 0:8ede47d38d10 26 Timer::Timer(const ticker_data_t *data) : _running(), _start(), _time(), _ticker_data(data) {
phungductung 0:8ede47d38d10 27 reset();
phungductung 0:8ede47d38d10 28 }
phungductung 0:8ede47d38d10 29
phungductung 0:8ede47d38d10 30 void Timer::start() {
phungductung 0:8ede47d38d10 31 if (!_running) {
phungductung 0:8ede47d38d10 32 _start = ticker_read(_ticker_data);
phungductung 0:8ede47d38d10 33 _running = 1;
phungductung 0:8ede47d38d10 34 }
phungductung 0:8ede47d38d10 35 }
phungductung 0:8ede47d38d10 36
phungductung 0:8ede47d38d10 37 void Timer::stop() {
phungductung 0:8ede47d38d10 38 _time += slicetime();
phungductung 0:8ede47d38d10 39 _running = 0;
phungductung 0:8ede47d38d10 40 }
phungductung 0:8ede47d38d10 41
phungductung 0:8ede47d38d10 42 int Timer::read_us() {
phungductung 0:8ede47d38d10 43 return _time + slicetime();
phungductung 0:8ede47d38d10 44 }
phungductung 0:8ede47d38d10 45
phungductung 0:8ede47d38d10 46 float Timer::read() {
phungductung 0:8ede47d38d10 47 return (float)read_us() / 1000000.0f;
phungductung 0:8ede47d38d10 48 }
phungductung 0:8ede47d38d10 49
phungductung 0:8ede47d38d10 50 int Timer::read_ms() {
phungductung 0:8ede47d38d10 51 return read_us() / 1000;
phungductung 0:8ede47d38d10 52 }
phungductung 0:8ede47d38d10 53
phungductung 0:8ede47d38d10 54 int Timer::slicetime() {
phungductung 0:8ede47d38d10 55 if (_running) {
phungductung 0:8ede47d38d10 56 return ticker_read(_ticker_data) - _start;
phungductung 0:8ede47d38d10 57 } else {
phungductung 0:8ede47d38d10 58 return 0;
phungductung 0:8ede47d38d10 59 }
phungductung 0:8ede47d38d10 60 }
phungductung 0:8ede47d38d10 61
phungductung 0:8ede47d38d10 62 void Timer::reset() {
phungductung 0:8ede47d38d10 63 _start = ticker_read(_ticker_data);
phungductung 0:8ede47d38d10 64 _time = 0;
phungductung 0:8ede47d38d10 65 }
phungductung 0:8ede47d38d10 66
phungductung 0:8ede47d38d10 67 #ifdef MBED_OPERATORS
phungductung 0:8ede47d38d10 68 Timer::operator float() {
phungductung 0:8ede47d38d10 69 return read();
phungductung 0:8ede47d38d10 70 }
phungductung 0:8ede47d38d10 71 #endif
phungductung 0:8ede47d38d10 72
phungductung 0:8ede47d38d10 73 } // namespace mbed