mirror of https://github.com/ARMmbed/mbed-os.git
79 lines
2.1 KiB
C++
79 lines
2.1 KiB
C++
/* mbed Microcontroller Library
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* Copyright (c) 2006-2019 ARM Limited
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "drivers/Ticker.h"
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#include "drivers/TimerEvent.h"
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#include "platform/FunctionPointer.h"
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#include "hal/ticker_api.h"
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#include "platform/mbed_critical.h"
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#include "platform/mbed_power_mgmt.h"
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namespace mbed {
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Ticker::Ticker() : TimerEvent(), _function(0), _lock_deepsleep(true)
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{
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}
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// When low power ticker is in use, then do not disable deep sleep.
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Ticker::Ticker(const ticker_data_t *data) : TimerEvent(data), _function(0), _lock_deepsleep(!data->interface->runs_in_deep_sleep)
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{
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}
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void Ticker::detach()
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{
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core_util_critical_section_enter();
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remove();
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// unlocked only if we were attached (we locked it) and this is not low power ticker
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if (_function && _lock_deepsleep) {
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sleep_manager_unlock_deep_sleep();
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}
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_function = 0;
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core_util_critical_section_exit();
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}
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void Ticker::setup(us_timestamp_t t)
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{
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core_util_critical_section_enter();
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remove();
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_delay = t;
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insert_absolute(_delay + ticker_read_us(_ticker_data));
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core_util_critical_section_exit();
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}
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void Ticker::handler()
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{
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insert_absolute(event.timestamp + _delay);
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if (_function) {
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_function();
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}
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}
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void Ticker::attach_us(Callback<void()> func, us_timestamp_t t)
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{
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core_util_critical_section_enter();
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// lock only for the initial callback setup and this is not low power ticker
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if (!_function && _lock_deepsleep) {
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sleep_manager_lock_deep_sleep();
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}
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_function = func;
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setup(t);
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core_util_critical_section_exit();
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}
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} // namespace mbed
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