lzbp li / mbed-stm32l0l1-src-un

++

Fork of mbed-stm32l0/l1-src by lzbp li

api/TimerEvent.h@304:89b9c3a9a045, 2014-08-29 (annotated)

Committer:
mbed_official
Date:
Fri Aug 29 17:15:07 2014 +0100
Revision:
304:89b9c3a9a045
Parent:
13:0645d8841f51
Child:
525:c320967f86b9
Synchronized with git revision 734f365d7da26ef199751f4b0d91611479b495ea



Full URL: https://github.com/mbedmicro/mbed/commit/734f365d7da26ef199751f4b0d91611479b495ea/



1. timestamp_t as an abstraction for time values managed by

   Ticker. Using uint64_t for timestamp_t allows a wraparound-free

   Ticker. This change forces us to update the definitions of usTicker

   for all platforms; but the changes beyond nRF51822 aren't major.



2. reduce power consumption on the nRF51822 by removing the need for

   the high-frequency processor timer; and reimplementing it using the

   RTC.



I've also replaced high-frequency clock with low-frequency external

clock during system startup of the nRF51822. This brings a major win

in power consumption.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 13:0645d8841f51 1 /* mbed Microcontroller Library
bogdanm 13:0645d8841f51 2 * Copyright (c) 2006-2013 ARM Limited
bogdanm 13:0645d8841f51 3 *
bogdanm 13:0645d8841f51 4 * Licensed under the Apache License, Version 2.0 (the "License");
bogdanm 13:0645d8841f51 5 * you may not use this file except in compliance with the License.
bogdanm 13:0645d8841f51 6 * You may obtain a copy of the License at
bogdanm 13:0645d8841f51 7 *
bogdanm 13:0645d8841f51 8 * http://www.apache.org/licenses/LICENSE-2.0
bogdanm 13:0645d8841f51 9 *
bogdanm 13:0645d8841f51 10 * Unless required by applicable law or agreed to in writing, software
bogdanm 13:0645d8841f51 11 * distributed under the License is distributed on an "AS IS" BASIS,
bogdanm 13:0645d8841f51 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
bogdanm 13:0645d8841f51 13 * See the License for the specific language governing permissions and
bogdanm 13:0645d8841f51 14 * limitations under the License.
bogdanm 13:0645d8841f51 15 */
bogdanm 13:0645d8841f51 16 #ifndef MBED_TIMEREVENT_H
bogdanm 13:0645d8841f51 17 #define MBED_TIMEREVENT_H
bogdanm 13:0645d8841f51 18
bogdanm 13:0645d8841f51 19 #include "us_ticker_api.h"
bogdanm 13:0645d8841f51 20
bogdanm 13:0645d8841f51 21 namespace mbed {
bogdanm 13:0645d8841f51 22
bogdanm 13:0645d8841f51 23 /** Base abstraction for timer interrupts
bogdanm 13:0645d8841f51 24 */
bogdanm 13:0645d8841f51 25 class TimerEvent {
bogdanm 13:0645d8841f51 26 public:
bogdanm 13:0645d8841f51 27 TimerEvent();
bogdanm 13:0645d8841f51 28
bogdanm 13:0645d8841f51 29 /** The handler registered with the underlying timer interrupt
bogdanm 13:0645d8841f51 30 */
bogdanm 13:0645d8841f51 31 static void irq(uint32_t id);
bogdanm 13:0645d8841f51 32
bogdanm 13:0645d8841f51 33 /** Destruction removes it...
bogdanm 13:0645d8841f51 34 */
bogdanm 13:0645d8841f51 35 virtual ~TimerEvent();
bogdanm 13:0645d8841f51 36
bogdanm 13:0645d8841f51 37 protected:
bogdanm 13:0645d8841f51 38 // The handler called to service the timer event of the derived class
bogdanm 13:0645d8841f51 39 virtual void handler() = 0;
bogdanm 13:0645d8841f51 40
bogdanm 13:0645d8841f51 41 // insert in to linked list
mbed_official 304:89b9c3a9a045 42 void insert(timestamp_t timestamp);
bogdanm 13:0645d8841f51 43
bogdanm 13:0645d8841f51 44 // remove from linked list, if in it
bogdanm 13:0645d8841f51 45 void remove();
bogdanm 13:0645d8841f51 46
bogdanm 13:0645d8841f51 47 ticker_event_t event;
bogdanm 13:0645d8841f51 48 };
bogdanm 13:0645d8841f51 49
bogdanm 13:0645d8841f51 50 } // namespace mbed
bogdanm 13:0645d8841f51 51
bogdanm 13:0645d8841f51 52 #endif