Denislam Valeev / Mbed OS Nucleo_rtos_basic

1

mbed-os/drivers/Ticker.cpp@0:e056ac8fecf8, 2018-03-13 (annotated)

Committer:
valeyev
Date:
Tue Mar 13 07:17:50 2018 +0000
Revision:
0:e056ac8fecf8
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valeyev 0:e056ac8fecf8 1 /* mbed Microcontroller Library
valeyev 0:e056ac8fecf8 2 * Copyright (c) 2006-2013 ARM Limited
valeyev 0:e056ac8fecf8 3 *
valeyev 0:e056ac8fecf8 4 * Licensed under the Apache License, Version 2.0 (the "License");
valeyev 0:e056ac8fecf8 5 * you may not use this file except in compliance with the License.
valeyev 0:e056ac8fecf8 6 * You may obtain a copy of the License at
valeyev 0:e056ac8fecf8 7 *
valeyev 0:e056ac8fecf8 8 * http://www.apache.org/licenses/LICENSE-2.0
valeyev 0:e056ac8fecf8 9 *
valeyev 0:e056ac8fecf8 10 * Unless required by applicable law or agreed to in writing, software
valeyev 0:e056ac8fecf8 11 * distributed under the License is distributed on an "AS IS" BASIS,
valeyev 0:e056ac8fecf8 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
valeyev 0:e056ac8fecf8 13 * See the License for the specific language governing permissions and
valeyev 0:e056ac8fecf8 14 * limitations under the License.
valeyev 0:e056ac8fecf8 15 */
valeyev 0:e056ac8fecf8 16 #include "drivers/Ticker.h"
valeyev 0:e056ac8fecf8 17
valeyev 0:e056ac8fecf8 18 #include "drivers/TimerEvent.h"
valeyev 0:e056ac8fecf8 19 #include "platform/FunctionPointer.h"
valeyev 0:e056ac8fecf8 20 #include "hal/ticker_api.h"
valeyev 0:e056ac8fecf8 21 #include "platform/mbed_critical.h"
valeyev 0:e056ac8fecf8 22
valeyev 0:e056ac8fecf8 23 namespace mbed {
valeyev 0:e056ac8fecf8 24
valeyev 0:e056ac8fecf8 25 void Ticker::detach() {
valeyev 0:e056ac8fecf8 26 core_util_critical_section_enter();
valeyev 0:e056ac8fecf8 27 remove();
valeyev 0:e056ac8fecf8 28 // unlocked only if we were attached (we locked it) and this is not low power ticker
valeyev 0:e056ac8fecf8 29 if(_function && _lock_deepsleep) {
valeyev 0:e056ac8fecf8 30 sleep_manager_unlock_deep_sleep();
valeyev 0:e056ac8fecf8 31 }
valeyev 0:e056ac8fecf8 32
valeyev 0:e056ac8fecf8 33 _function = 0;
valeyev 0:e056ac8fecf8 34 core_util_critical_section_exit();
valeyev 0:e056ac8fecf8 35 }
valeyev 0:e056ac8fecf8 36
valeyev 0:e056ac8fecf8 37 void Ticker::setup(us_timestamp_t t) {
valeyev 0:e056ac8fecf8 38 core_util_critical_section_enter();
valeyev 0:e056ac8fecf8 39 remove();
valeyev 0:e056ac8fecf8 40 _delay = t;
valeyev 0:e056ac8fecf8 41 insert_absolute(_delay + ticker_read_us(_ticker_data));
valeyev 0:e056ac8fecf8 42 core_util_critical_section_exit();
valeyev 0:e056ac8fecf8 43 }
valeyev 0:e056ac8fecf8 44
valeyev 0:e056ac8fecf8 45 void Ticker::handler() {
valeyev 0:e056ac8fecf8 46 insert_absolute(event.timestamp + _delay);
valeyev 0:e056ac8fecf8 47 if (_function) {
valeyev 0:e056ac8fecf8 48 _function();
valeyev 0:e056ac8fecf8 49 }
valeyev 0:e056ac8fecf8 50 }
valeyev 0:e056ac8fecf8 51
valeyev 0:e056ac8fecf8 52 } // namespace mbed