Kev Mann / mbed-dev-OS5_10_4

RTC auf true

drivers/Timer.cpp@2:7aab896b1a3b, 2019-03-13 (annotated)

Committer:
kevman
Date:
Wed Mar 13 11:03:24 2019 +0000
Revision:
2:7aab896b1a3b
Parent:
0:38ceb79fef03 
2019-03-13

Who changed what in which revision?

UserRevisionLine numberNew contents of line
kevman 0:38ceb79fef03 1 /* mbed Microcontroller Library
kevman 0:38ceb79fef03 2 * Copyright (c) 2006-2013 ARM Limited
kevman 0:38ceb79fef03 3 *
kevman 0:38ceb79fef03 4 * Licensed under the Apache License, Version 2.0 (the "License");
kevman 0:38ceb79fef03 5 * you may not use this file except in compliance with the License.
kevman 0:38ceb79fef03 6 * You may obtain a copy of the License at
kevman 0:38ceb79fef03 7 *
kevman 0:38ceb79fef03 8 * http://www.apache.org/licenses/LICENSE-2.0
kevman 0:38ceb79fef03 9 *
kevman 0:38ceb79fef03 10 * Unless required by applicable law or agreed to in writing, software
kevman 0:38ceb79fef03 11 * distributed under the License is distributed on an "AS IS" BASIS,
kevman 0:38ceb79fef03 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
kevman 0:38ceb79fef03 13 * See the License for the specific language governing permissions and
kevman 0:38ceb79fef03 14 * limitations under the License.
kevman 0:38ceb79fef03 15 */
kevman 0:38ceb79fef03 16 #include "drivers/Timer.h"
kevman 0:38ceb79fef03 17 #include "hal/ticker_api.h"
kevman 0:38ceb79fef03 18 #include "hal/us_ticker_api.h"
kevman 0:38ceb79fef03 19 #include "platform/mbed_critical.h"
kevman 0:38ceb79fef03 20 #include "hal/lp_ticker_api.h"
kevman 0:38ceb79fef03 21
kevman 0:38ceb79fef03 22 namespace mbed {
kevman 0:38ceb79fef03 23
kevman 0:38ceb79fef03 24 Timer::Timer() : _running(), _start(), _time(), _ticker_data(get_us_ticker_data()), _lock_deepsleep(true)
kevman 0:38ceb79fef03 25 {
kevman 0:38ceb79fef03 26 reset();
kevman 0:38ceb79fef03 27 }
kevman 0:38ceb79fef03 28
kevman 0:38ceb79fef03 29 Timer::Timer(const ticker_data_t *data) : _running(), _start(), _time(), _ticker_data(data), _lock_deepsleep(true)
kevman 0:38ceb79fef03 30 {
kevman 0:38ceb79fef03 31 reset();
kevman 0:38ceb79fef03 32 #if DEVICE_LPTICKER
kevman 0:38ceb79fef03 33 _lock_deepsleep = (data != get_lp_ticker_data());
kevman 0:38ceb79fef03 34 #endif
kevman 0:38ceb79fef03 35 }
kevman 0:38ceb79fef03 36
kevman 0:38ceb79fef03 37 Timer::~Timer()
kevman 0:38ceb79fef03 38 {
kevman 0:38ceb79fef03 39 core_util_critical_section_enter();
kevman 0:38ceb79fef03 40 if (_running) {
kevman 0:38ceb79fef03 41 if (_lock_deepsleep) {
kevman 0:38ceb79fef03 42 sleep_manager_unlock_deep_sleep();
kevman 0:38ceb79fef03 43 }
kevman 0:38ceb79fef03 44 }
kevman 0:38ceb79fef03 45 _running = 0;
kevman 0:38ceb79fef03 46 core_util_critical_section_exit();
kevman 0:38ceb79fef03 47 }
kevman 0:38ceb79fef03 48
kevman 0:38ceb79fef03 49 void Timer::start()
kevman 0:38ceb79fef03 50 {
kevman 0:38ceb79fef03 51 core_util_critical_section_enter();
kevman 0:38ceb79fef03 52 if (!_running) {
kevman 0:38ceb79fef03 53 if (_lock_deepsleep) {
kevman 0:38ceb79fef03 54 sleep_manager_lock_deep_sleep();
kevman 0:38ceb79fef03 55 }
kevman 0:38ceb79fef03 56 _start = ticker_read_us(_ticker_data);
kevman 0:38ceb79fef03 57 _running = 1;
kevman 0:38ceb79fef03 58 }
kevman 0:38ceb79fef03 59 core_util_critical_section_exit();
kevman 0:38ceb79fef03 60 }
kevman 0:38ceb79fef03 61
kevman 0:38ceb79fef03 62 void Timer::stop()
kevman 0:38ceb79fef03 63 {
kevman 0:38ceb79fef03 64 core_util_critical_section_enter();
kevman 0:38ceb79fef03 65 _time += slicetime();
kevman 0:38ceb79fef03 66 if (_running) {
kevman 0:38ceb79fef03 67 if (_lock_deepsleep) {
kevman 0:38ceb79fef03 68 sleep_manager_unlock_deep_sleep();
kevman 0:38ceb79fef03 69 }
kevman 0:38ceb79fef03 70 }
kevman 0:38ceb79fef03 71 _running = 0;
kevman 0:38ceb79fef03 72 core_util_critical_section_exit();
kevman 0:38ceb79fef03 73 }
kevman 0:38ceb79fef03 74
kevman 0:38ceb79fef03 75 int Timer::read_us()
kevman 0:38ceb79fef03 76 {
kevman 0:38ceb79fef03 77 return read_high_resolution_us();
kevman 0:38ceb79fef03 78 }
kevman 0:38ceb79fef03 79
kevman 0:38ceb79fef03 80 float Timer::read()
kevman 0:38ceb79fef03 81 {
kevman 0:38ceb79fef03 82 return (float)read_high_resolution_us() / 1000000.0f;
kevman 0:38ceb79fef03 83 }
kevman 0:38ceb79fef03 84
kevman 0:38ceb79fef03 85 int Timer::read_ms()
kevman 0:38ceb79fef03 86 {
kevman 0:38ceb79fef03 87 return read_high_resolution_us() / 1000;
kevman 0:38ceb79fef03 88 }
kevman 0:38ceb79fef03 89
kevman 0:38ceb79fef03 90 us_timestamp_t Timer::read_high_resolution_us()
kevman 0:38ceb79fef03 91 {
kevman 0:38ceb79fef03 92 core_util_critical_section_enter();
kevman 0:38ceb79fef03 93 us_timestamp_t time = _time + slicetime();
kevman 0:38ceb79fef03 94 core_util_critical_section_exit();
kevman 0:38ceb79fef03 95 return time;
kevman 0:38ceb79fef03 96 }
kevman 0:38ceb79fef03 97
kevman 0:38ceb79fef03 98 us_timestamp_t Timer::slicetime()
kevman 0:38ceb79fef03 99 {
kevman 0:38ceb79fef03 100 us_timestamp_t ret = 0;
kevman 0:38ceb79fef03 101 core_util_critical_section_enter();
kevman 0:38ceb79fef03 102 if (_running) {
kevman 0:38ceb79fef03 103 ret = ticker_read_us(_ticker_data) - _start;
kevman 0:38ceb79fef03 104 }
kevman 0:38ceb79fef03 105 core_util_critical_section_exit();
kevman 0:38ceb79fef03 106 return ret;
kevman 0:38ceb79fef03 107 }
kevman 0:38ceb79fef03 108
kevman 0:38ceb79fef03 109 void Timer::reset()
kevman 0:38ceb79fef03 110 {
kevman 0:38ceb79fef03 111 core_util_critical_section_enter();
kevman 0:38ceb79fef03 112 _start = ticker_read_us(_ticker_data);
kevman 0:38ceb79fef03 113 _time = 0;
kevman 0:38ceb79fef03 114 core_util_critical_section_exit();
kevman 0:38ceb79fef03 115 }
kevman 0:38ceb79fef03 116
kevman 0:38ceb79fef03 117 Timer::operator float()
kevman 0:38ceb79fef03 118 {
kevman 0:38ceb79fef03 119 return read();
kevman 0:38ceb79fef03 120 }
kevman 0:38ceb79fef03 121
kevman 0:38ceb79fef03 122 } // namespace mbed