mbed official / mbed-dev

mbed library sources. Supersedes mbed-src.

Dependents:   Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more

drivers/Ticker.cpp@189:f392fc9709a3, 2019-02-20 (annotated)

Committer:
AnnaBridge
Date:
Wed Feb 20 22:31:08 2019 +0000
Revision:
189:f392fc9709a3
Parent:
187:0387e8f68319 
mbed library release version 165

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 149:156823d33999 1 /* mbed Microcontroller Library
<> 149:156823d33999 2 * Copyright (c) 2006-2013 ARM Limited
AnnaBridge 189:f392fc9709a3 3 * SPDX-License-Identifier: Apache-2.0
<> 149:156823d33999 4 *
<> 149:156823d33999 5 * Licensed under the Apache License, Version 2.0 (the "License");
<> 149:156823d33999 6 * you may not use this file except in compliance with the License.
<> 149:156823d33999 7 * You may obtain a copy of the License at
<> 149:156823d33999 8 *
<> 149:156823d33999 9 * http://www.apache.org/licenses/LICENSE-2.0
<> 149:156823d33999 10 *
<> 149:156823d33999 11 * Unless required by applicable law or agreed to in writing, software
<> 149:156823d33999 12 * distributed under the License is distributed on an "AS IS" BASIS,
<> 149:156823d33999 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
<> 149:156823d33999 14 * See the License for the specific language governing permissions and
<> 149:156823d33999 15 * limitations under the License.
<> 149:156823d33999 16 */
<> 149:156823d33999 17 #include "drivers/Ticker.h"
<> 149:156823d33999 18
<> 149:156823d33999 19 #include "drivers/TimerEvent.h"
<> 149:156823d33999 20 #include "platform/FunctionPointer.h"
<> 149:156823d33999 21 #include "hal/ticker_api.h"
<> 160:d5399cc887bb 22 #include "platform/mbed_critical.h"
<> 149:156823d33999 23
<> 149:156823d33999 24 namespace mbed {
<> 149:156823d33999 25
AnnaBridge 187:0387e8f68319 26 void Ticker::detach()
AnnaBridge 187:0387e8f68319 27 {
<> 149:156823d33999 28 core_util_critical_section_enter();
<> 149:156823d33999 29 remove();
AnnaBridge 175:af195413fb11 30 // unlocked only if we were attached (we locked it) and this is not low power ticker
AnnaBridge 187:0387e8f68319 31 if (_function && _lock_deepsleep) {
AnnaBridge 174:b96e65c34a4d 32 sleep_manager_unlock_deep_sleep();
AnnaBridge 174:b96e65c34a4d 33 }
AnnaBridge 175:af195413fb11 34
<> 160:d5399cc887bb 35 _function = 0;
<> 149:156823d33999 36 core_util_critical_section_exit();
<> 149:156823d33999 37 }
<> 149:156823d33999 38
AnnaBridge 187:0387e8f68319 39 void Ticker::setup(us_timestamp_t t)
AnnaBridge 187:0387e8f68319 40 {
<> 149:156823d33999 41 core_util_critical_section_enter();
<> 149:156823d33999 42 remove();
<> 149:156823d33999 43 _delay = t;
AnnaBridge 167:e84263d55307 44 insert_absolute(_delay + ticker_read_us(_ticker_data));
<> 149:156823d33999 45 core_util_critical_section_exit();
<> 149:156823d33999 46 }
<> 149:156823d33999 47
AnnaBridge 187:0387e8f68319 48 void Ticker::handler()
AnnaBridge 187:0387e8f68319 49 {
AnnaBridge 167:e84263d55307 50 insert_absolute(event.timestamp + _delay);
AnnaBridge 174:b96e65c34a4d 51 if (_function) {
AnnaBridge 174:b96e65c34a4d 52 _function();
AnnaBridge 174:b96e65c34a4d 53 }
<> 149:156823d33999 54 }
<> 149:156823d33999 55
AnnaBridge 189:f392fc9709a3 56 void Ticker::attach_us(Callback<void()> func, us_timestamp_t t)
AnnaBridge 189:f392fc9709a3 57 {
AnnaBridge 189:f392fc9709a3 58 core_util_critical_section_enter();
AnnaBridge 189:f392fc9709a3 59 // lock only for the initial callback setup and this is not low power ticker
AnnaBridge 189:f392fc9709a3 60 if (!_function && _lock_deepsleep) {
AnnaBridge 189:f392fc9709a3 61 sleep_manager_lock_deep_sleep();
AnnaBridge 189:f392fc9709a3 62 }
AnnaBridge 189:f392fc9709a3 63 _function = func;
AnnaBridge 189:f392fc9709a3 64 setup(t);
AnnaBridge 189:f392fc9709a3 65 core_util_critical_section_exit();
AnnaBridge 189:f392fc9709a3 66 }
AnnaBridge 189:f392fc9709a3 67
<> 149:156823d33999 68 } // namespace mbed