Rahul Dahiya / Mbed OS STM32F7 Ethernet

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mbed-os/drivers/Timer.cpp@0:fb8047b156bb, 2020-01-15 (annotated)

Committer:
rahul_dahiya
Date:
Wed Jan 15 15:57:15 2020 +0530
Revision:
0:fb8047b156bb
STM32F7 LWIP

Who changed what in which revision?

UserRevisionLine numberNew contents of line
rahul_dahiya 0:fb8047b156bb 1 /* mbed Microcontroller Library
rahul_dahiya 0:fb8047b156bb 2 * Copyright (c) 2006-2013 ARM Limited
rahul_dahiya 0:fb8047b156bb 3 *
rahul_dahiya 0:fb8047b156bb 4 * Licensed under the Apache License, Version 2.0 (the "License");
rahul_dahiya 0:fb8047b156bb 5 * you may not use this file except in compliance with the License.
rahul_dahiya 0:fb8047b156bb 6 * You may obtain a copy of the License at
rahul_dahiya 0:fb8047b156bb 7 *
rahul_dahiya 0:fb8047b156bb 8 * http://www.apache.org/licenses/LICENSE-2.0
rahul_dahiya 0:fb8047b156bb 9 *
rahul_dahiya 0:fb8047b156bb 10 * Unless required by applicable law or agreed to in writing, software
rahul_dahiya 0:fb8047b156bb 11 * distributed under the License is distributed on an "AS IS" BASIS,
rahul_dahiya 0:fb8047b156bb 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
rahul_dahiya 0:fb8047b156bb 13 * See the License for the specific language governing permissions and
rahul_dahiya 0:fb8047b156bb 14 * limitations under the License.
rahul_dahiya 0:fb8047b156bb 15 */
rahul_dahiya 0:fb8047b156bb 16 #include "drivers/Timer.h"
rahul_dahiya 0:fb8047b156bb 17 #include "hal/ticker_api.h"
rahul_dahiya 0:fb8047b156bb 18 #include "hal/us_ticker_api.h"
rahul_dahiya 0:fb8047b156bb 19 #include "platform/mbed_critical.h"
rahul_dahiya 0:fb8047b156bb 20 #include "hal/lp_ticker_api.h"
rahul_dahiya 0:fb8047b156bb 21
rahul_dahiya 0:fb8047b156bb 22 namespace mbed {
rahul_dahiya 0:fb8047b156bb 23
rahul_dahiya 0:fb8047b156bb 24 Timer::Timer() : _running(), _start(), _time(), _ticker_data(get_us_ticker_data()), _lock_deepsleep(true) {
rahul_dahiya 0:fb8047b156bb 25 reset();
rahul_dahiya 0:fb8047b156bb 26 }
rahul_dahiya 0:fb8047b156bb 27
rahul_dahiya 0:fb8047b156bb 28 Timer::Timer(const ticker_data_t *data) : _running(), _start(), _time(), _ticker_data(data), _lock_deepsleep(true) {
rahul_dahiya 0:fb8047b156bb 29 reset();
rahul_dahiya 0:fb8047b156bb 30 #if DEVICE_LOWPOWERTIMER
rahul_dahiya 0:fb8047b156bb 31 _lock_deepsleep = (data != get_lp_ticker_data());
rahul_dahiya 0:fb8047b156bb 32 #endif
rahul_dahiya 0:fb8047b156bb 33 }
rahul_dahiya 0:fb8047b156bb 34
rahul_dahiya 0:fb8047b156bb 35 Timer::~Timer() {
rahul_dahiya 0:fb8047b156bb 36 core_util_critical_section_enter();
rahul_dahiya 0:fb8047b156bb 37 if (_running) {
rahul_dahiya 0:fb8047b156bb 38 if(_lock_deepsleep) {
rahul_dahiya 0:fb8047b156bb 39 sleep_manager_unlock_deep_sleep();
rahul_dahiya 0:fb8047b156bb 40 }
rahul_dahiya 0:fb8047b156bb 41 }
rahul_dahiya 0:fb8047b156bb 42 _running = 0;
rahul_dahiya 0:fb8047b156bb 43 core_util_critical_section_exit();
rahul_dahiya 0:fb8047b156bb 44 }
rahul_dahiya 0:fb8047b156bb 45
rahul_dahiya 0:fb8047b156bb 46 void Timer::start() {
rahul_dahiya 0:fb8047b156bb 47 core_util_critical_section_enter();
rahul_dahiya 0:fb8047b156bb 48 if (!_running) {
rahul_dahiya 0:fb8047b156bb 49 if(_lock_deepsleep) {
rahul_dahiya 0:fb8047b156bb 50 sleep_manager_lock_deep_sleep();
rahul_dahiya 0:fb8047b156bb 51 }
rahul_dahiya 0:fb8047b156bb 52 _start = ticker_read_us(_ticker_data);
rahul_dahiya 0:fb8047b156bb 53 _running = 1;
rahul_dahiya 0:fb8047b156bb 54 }
rahul_dahiya 0:fb8047b156bb 55 core_util_critical_section_exit();
rahul_dahiya 0:fb8047b156bb 56 }
rahul_dahiya 0:fb8047b156bb 57
rahul_dahiya 0:fb8047b156bb 58 void Timer::stop() {
rahul_dahiya 0:fb8047b156bb 59 core_util_critical_section_enter();
rahul_dahiya 0:fb8047b156bb 60 _time += slicetime();
rahul_dahiya 0:fb8047b156bb 61 if (_running) {
rahul_dahiya 0:fb8047b156bb 62 if(_lock_deepsleep) {
rahul_dahiya 0:fb8047b156bb 63 sleep_manager_unlock_deep_sleep();
rahul_dahiya 0:fb8047b156bb 64 }
rahul_dahiya 0:fb8047b156bb 65 }
rahul_dahiya 0:fb8047b156bb 66 _running = 0;
rahul_dahiya 0:fb8047b156bb 67 core_util_critical_section_exit();
rahul_dahiya 0:fb8047b156bb 68 }
rahul_dahiya 0:fb8047b156bb 69
rahul_dahiya 0:fb8047b156bb 70 int Timer::read_us() {
rahul_dahiya 0:fb8047b156bb 71 return read_high_resolution_us();
rahul_dahiya 0:fb8047b156bb 72 }
rahul_dahiya 0:fb8047b156bb 73
rahul_dahiya 0:fb8047b156bb 74 float Timer::read() {
rahul_dahiya 0:fb8047b156bb 75 return (float)read_us() / 1000000.0f;
rahul_dahiya 0:fb8047b156bb 76 }
rahul_dahiya 0:fb8047b156bb 77
rahul_dahiya 0:fb8047b156bb 78 int Timer::read_ms() {
rahul_dahiya 0:fb8047b156bb 79 return read_high_resolution_us() / 1000;
rahul_dahiya 0:fb8047b156bb 80 }
rahul_dahiya 0:fb8047b156bb 81
rahul_dahiya 0:fb8047b156bb 82 us_timestamp_t Timer::read_high_resolution_us() {
rahul_dahiya 0:fb8047b156bb 83 core_util_critical_section_enter();
rahul_dahiya 0:fb8047b156bb 84 us_timestamp_t time = _time + slicetime();
rahul_dahiya 0:fb8047b156bb 85 core_util_critical_section_exit();
rahul_dahiya 0:fb8047b156bb 86 return time;
rahul_dahiya 0:fb8047b156bb 87 }
rahul_dahiya 0:fb8047b156bb 88
rahul_dahiya 0:fb8047b156bb 89 us_timestamp_t Timer::slicetime() {
rahul_dahiya 0:fb8047b156bb 90 us_timestamp_t ret = 0;
rahul_dahiya 0:fb8047b156bb 91 core_util_critical_section_enter();
rahul_dahiya 0:fb8047b156bb 92 if (_running) {
rahul_dahiya 0:fb8047b156bb 93 ret = ticker_read_us(_ticker_data) - _start;
rahul_dahiya 0:fb8047b156bb 94 }
rahul_dahiya 0:fb8047b156bb 95 core_util_critical_section_exit();
rahul_dahiya 0:fb8047b156bb 96 return ret;
rahul_dahiya 0:fb8047b156bb 97 }
rahul_dahiya 0:fb8047b156bb 98
rahul_dahiya 0:fb8047b156bb 99 void Timer::reset() {
rahul_dahiya 0:fb8047b156bb 100 core_util_critical_section_enter();
rahul_dahiya 0:fb8047b156bb 101 _start = ticker_read_us(_ticker_data);
rahul_dahiya 0:fb8047b156bb 102 _time = 0;
rahul_dahiya 0:fb8047b156bb 103 core_util_critical_section_exit();
rahul_dahiya 0:fb8047b156bb 104 }
rahul_dahiya 0:fb8047b156bb 105
rahul_dahiya 0:fb8047b156bb 106 Timer::operator float() {
rahul_dahiya 0:fb8047b156bb 107 return read();
rahul_dahiya 0:fb8047b156bb 108 }
rahul_dahiya 0:fb8047b156bb 109
rahul_dahiya 0:fb8047b156bb 110 } // namespace mbed