Gan likun / mbed-dev

00

drivers/Ticker.cpp@0:13413ea9a877, 2022-06-12 (annotated)

Committer:
ganlikun
Date:
Sun Jun 12 14:02:44 2022 +0000
Revision:
0:13413ea9a877
00

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ganlikun 0:13413ea9a877 1 /* mbed Microcontroller Library
ganlikun 0:13413ea9a877 2 * Copyright (c) 2006-2013 ARM Limited
ganlikun 0:13413ea9a877 3 *
ganlikun 0:13413ea9a877 4 * Licensed under the Apache License, Version 2.0 (the "License");
ganlikun 0:13413ea9a877 5 * you may not use this file except in compliance with the License.
ganlikun 0:13413ea9a877 6 * You may obtain a copy of the License at
ganlikun 0:13413ea9a877 7 *
ganlikun 0:13413ea9a877 8 * http://www.apache.org/licenses/LICENSE-2.0
ganlikun 0:13413ea9a877 9 *
ganlikun 0:13413ea9a877 10 * Unless required by applicable law or agreed to in writing, software
ganlikun 0:13413ea9a877 11 * distributed under the License is distributed on an "AS IS" BASIS,
ganlikun 0:13413ea9a877 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
ganlikun 0:13413ea9a877 13 * See the License for the specific language governing permissions and
ganlikun 0:13413ea9a877 14 * limitations under the License.
ganlikun 0:13413ea9a877 15 */
ganlikun 0:13413ea9a877 16 #include "drivers/Ticker.h"
ganlikun 0:13413ea9a877 17
ganlikun 0:13413ea9a877 18 #include "drivers/TimerEvent.h"
ganlikun 0:13413ea9a877 19 #include "platform/FunctionPointer.h"
ganlikun 0:13413ea9a877 20 #include "hal/ticker_api.h"
ganlikun 0:13413ea9a877 21 #include "platform/mbed_critical.h"
ganlikun 0:13413ea9a877 22
ganlikun 0:13413ea9a877 23 namespace mbed {
ganlikun 0:13413ea9a877 24
ganlikun 0:13413ea9a877 25 void Ticker::detach() {
ganlikun 0:13413ea9a877 26 core_util_critical_section_enter();
ganlikun 0:13413ea9a877 27 remove();
ganlikun 0:13413ea9a877 28 // unlocked only if we were attached (we locked it) and this is not low power ticker
ganlikun 0:13413ea9a877 29 if(_function && _lock_deepsleep) {
ganlikun 0:13413ea9a877 30 sleep_manager_unlock_deep_sleep();
ganlikun 0:13413ea9a877 31 }
ganlikun 0:13413ea9a877 32
ganlikun 0:13413ea9a877 33 _function = 0;
ganlikun 0:13413ea9a877 34 core_util_critical_section_exit();
ganlikun 0:13413ea9a877 35 }
ganlikun 0:13413ea9a877 36
ganlikun 0:13413ea9a877 37 void Ticker::setup(us_timestamp_t t) {
ganlikun 0:13413ea9a877 38 core_util_critical_section_enter();
ganlikun 0:13413ea9a877 39 remove();
ganlikun 0:13413ea9a877 40 _delay = t;
ganlikun 0:13413ea9a877 41 insert_absolute(_delay + ticker_read_us(_ticker_data));
ganlikun 0:13413ea9a877 42 core_util_critical_section_exit();
ganlikun 0:13413ea9a877 43 }
ganlikun 0:13413ea9a877 44
ganlikun 0:13413ea9a877 45 void Ticker::handler() {
ganlikun 0:13413ea9a877 46 insert_absolute(event.timestamp + _delay);
ganlikun 0:13413ea9a877 47 if (_function) {
ganlikun 0:13413ea9a877 48 _function();
ganlikun 0:13413ea9a877 49 }
ganlikun 0:13413ea9a877 50 }
ganlikun 0:13413ea9a877 51
ganlikun 0:13413ea9a877 52 } // namespace mbed
ganlikun 0:13413ea9a877 53
ganlikun 0:13413ea9a877 54