zhang boie / mbed-dev-f30333

mbed-dev-f303

drivers/Ticker.cpp@0:bdf663c61a82, 2022-06-14 (annotated)

Committer:
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4
Date:
Tue Jun 14 09:21:18 2022 +0000
Revision:
0:bdf663c61a82
lib

Who changed what in which revision?

UserRevisionLine numberNew contents of line
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 1 /* mbed Microcontroller Library
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 2 * Copyright (c) 2006-2013 ARM Limited
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 3 *
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 4 * Licensed under the Apache License, Version 2.0 (the "License");
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 5 * you may not use this file except in compliance with the License.
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 6 * You may obtain a copy of the License at
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 7 *
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 8 * http://www.apache.org/licenses/LICENSE-2.0
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 9 *
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 10 * Unless required by applicable law or agreed to in writing, software
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 11 * distributed under the License is distributed on an "AS IS" BASIS,
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 13 * See the License for the specific language governing permissions and
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 14 * limitations under the License.
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 15 */
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 16 #include "drivers/Ticker.h"
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 17
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 18 #include "drivers/TimerEvent.h"
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 19 #include "platform/FunctionPointer.h"
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 20 #include "hal/ticker_api.h"
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 21 #include "platform/mbed_critical.h"
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 22
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 23 namespace mbed {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 24
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 25 void Ticker::detach() {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 26 core_util_critical_section_enter();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 27 remove();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 28 // unlocked only if we were attached (we locked it) and this is not low power ticker
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 29 if(_function && _lock_deepsleep) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 30 sleep_manager_unlock_deep_sleep();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 31 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 32
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 33 _function = 0;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 34 core_util_critical_section_exit();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 35 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 36
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 37 void Ticker::setup(us_timestamp_t t) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 38 core_util_critical_section_enter();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 39 remove();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 40 _delay = t;
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 41 insert_absolute(_delay + ticker_read_us(_ticker_data));
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 42 core_util_critical_section_exit();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 43 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 44
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 45 void Ticker::handler() {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 46 insert_absolute(event.timestamp + _delay);
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 47 if (_function) {
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 48 _function();
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 49 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 50 }
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 51
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 52 } // namespace mbed
abe5b02d-a2d4-4fe9-818e-c4e57c809ea4 0:bdf663c61a82 53