Maxim nexpaq / nexpaq_dev

Preliminary main mbed library for nexpaq development

hal/common/Timer.cpp@1:d96dbedaebdb, 2016-11-04 (annotated)

Committer:
nexpaq
Date:
Fri Nov 04 20:54:50 2016 +0000
Revision:
1:d96dbedaebdb
Parent:
0:6c56fb4bc5f0 
Removed extra directories for other platforms

Who changed what in which revision?

UserRevisionLine numberNew contents of line
nexpaq 0:6c56fb4bc5f0 1 /* mbed Microcontroller Library
nexpaq 0:6c56fb4bc5f0 2 * Copyright (c) 2006-2013 ARM Limited
nexpaq 0:6c56fb4bc5f0 3 *
nexpaq 0:6c56fb4bc5f0 4 * Licensed under the Apache License, Version 2.0 (the "License");
nexpaq 0:6c56fb4bc5f0 5 * you may not use this file except in compliance with the License.
nexpaq 0:6c56fb4bc5f0 6 * You may obtain a copy of the License at
nexpaq 0:6c56fb4bc5f0 7 *
nexpaq 0:6c56fb4bc5f0 8 * http://www.apache.org/licenses/LICENSE-2.0
nexpaq 0:6c56fb4bc5f0 9 *
nexpaq 0:6c56fb4bc5f0 10 * Unless required by applicable law or agreed to in writing, software
nexpaq 0:6c56fb4bc5f0 11 * distributed under the License is distributed on an "AS IS" BASIS,
nexpaq 0:6c56fb4bc5f0 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
nexpaq 0:6c56fb4bc5f0 13 * See the License for the specific language governing permissions and
nexpaq 0:6c56fb4bc5f0 14 * limitations under the License.
nexpaq 0:6c56fb4bc5f0 15 */
nexpaq 0:6c56fb4bc5f0 16 #include "Timer.h"
nexpaq 0:6c56fb4bc5f0 17 #include "ticker_api.h"
nexpaq 0:6c56fb4bc5f0 18 #include "us_ticker_api.h"
nexpaq 0:6c56fb4bc5f0 19 #include "critical.h"
nexpaq 0:6c56fb4bc5f0 20
nexpaq 0:6c56fb4bc5f0 21 namespace mbed {
nexpaq 0:6c56fb4bc5f0 22
nexpaq 0:6c56fb4bc5f0 23 Timer::Timer() : _running(), _start(), _time(), _ticker_data(get_us_ticker_data()) {
nexpaq 0:6c56fb4bc5f0 24 reset();
nexpaq 0:6c56fb4bc5f0 25 }
nexpaq 0:6c56fb4bc5f0 26
nexpaq 0:6c56fb4bc5f0 27 Timer::Timer(const ticker_data_t *data) : _running(), _start(), _time(), _ticker_data(data) {
nexpaq 0:6c56fb4bc5f0 28 reset();
nexpaq 0:6c56fb4bc5f0 29 }
nexpaq 0:6c56fb4bc5f0 30
nexpaq 0:6c56fb4bc5f0 31 void Timer::start() {
nexpaq 0:6c56fb4bc5f0 32 core_util_critical_section_enter();
nexpaq 0:6c56fb4bc5f0 33 if (!_running) {
nexpaq 0:6c56fb4bc5f0 34 _start = ticker_read(_ticker_data);
nexpaq 0:6c56fb4bc5f0 35 _running = 1;
nexpaq 0:6c56fb4bc5f0 36 }
nexpaq 0:6c56fb4bc5f0 37 core_util_critical_section_exit();
nexpaq 0:6c56fb4bc5f0 38 }
nexpaq 0:6c56fb4bc5f0 39
nexpaq 0:6c56fb4bc5f0 40 void Timer::stop() {
nexpaq 0:6c56fb4bc5f0 41 core_util_critical_section_enter();
nexpaq 0:6c56fb4bc5f0 42 _time += slicetime();
nexpaq 0:6c56fb4bc5f0 43 _running = 0;
nexpaq 0:6c56fb4bc5f0 44 core_util_critical_section_exit();
nexpaq 0:6c56fb4bc5f0 45 }
nexpaq 0:6c56fb4bc5f0 46
nexpaq 0:6c56fb4bc5f0 47 int Timer::read_us() {
nexpaq 0:6c56fb4bc5f0 48 core_util_critical_section_enter();
nexpaq 0:6c56fb4bc5f0 49 int time = _time + slicetime();
nexpaq 0:6c56fb4bc5f0 50 core_util_critical_section_exit();
nexpaq 0:6c56fb4bc5f0 51 return time;
nexpaq 0:6c56fb4bc5f0 52 }
nexpaq 0:6c56fb4bc5f0 53
nexpaq 0:6c56fb4bc5f0 54 float Timer::read() {
nexpaq 0:6c56fb4bc5f0 55 return (float)read_us() / 1000000.0f;
nexpaq 0:6c56fb4bc5f0 56 }
nexpaq 0:6c56fb4bc5f0 57
nexpaq 0:6c56fb4bc5f0 58 int Timer::read_ms() {
nexpaq 0:6c56fb4bc5f0 59 return read_us() / 1000;
nexpaq 0:6c56fb4bc5f0 60 }
nexpaq 0:6c56fb4bc5f0 61
nexpaq 0:6c56fb4bc5f0 62 int Timer::slicetime() {
nexpaq 0:6c56fb4bc5f0 63 core_util_critical_section_enter();
nexpaq 0:6c56fb4bc5f0 64 int ret = 0;
nexpaq 0:6c56fb4bc5f0 65 if (_running) {
nexpaq 0:6c56fb4bc5f0 66 ret = ticker_read(_ticker_data) - _start;
nexpaq 0:6c56fb4bc5f0 67 }
nexpaq 0:6c56fb4bc5f0 68 core_util_critical_section_exit();
nexpaq 0:6c56fb4bc5f0 69 return ret;
nexpaq 0:6c56fb4bc5f0 70 }
nexpaq 0:6c56fb4bc5f0 71
nexpaq 0:6c56fb4bc5f0 72 void Timer::reset() {
nexpaq 0:6c56fb4bc5f0 73 core_util_critical_section_enter();
nexpaq 0:6c56fb4bc5f0 74 _start = ticker_read(_ticker_data);
nexpaq 0:6c56fb4bc5f0 75 _time = 0;
nexpaq 0:6c56fb4bc5f0 76 core_util_critical_section_exit();
nexpaq 0:6c56fb4bc5f0 77 }
nexpaq 0:6c56fb4bc5f0 78
nexpaq 0:6c56fb4bc5f0 79 Timer::operator float() {
nexpaq 0:6c56fb4bc5f0 80 return read();
nexpaq 0:6c56fb4bc5f0 81 }
nexpaq 0:6c56fb4bc5f0 82
nexpaq 0:6c56fb4bc5f0 83 } // namespace mbed