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This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.

Development branch of the mbed library sources. This library is kept in synch with the latest changes from the mbed SDK and it is not guaranteed to work.

If you are looking for a stable and tested release, please import one of the official mbed library releases:

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The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Last commit 20 Feb 2019 by mbed official

common/Timer.cpp@358:9d7ef901f004, 2014-10-20 (annotated)

Committer:
mbed_official
Date:
Mon Oct 20 08:45:07 2014 +0100
Revision:
358:9d7ef901f004
Parent:
212:34d62c0b2af6
Child:
525:c320967f86b9
Synchronized with git revision 996e49964cd2c762ffd47bdce32ff3211f997782



Full URL: https://github.com/mbedmicro/mbed/commit/996e49964cd2c762ffd47bdce32ff3211f997782/



API: Timer - start() behavior (bug)fix

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 #include "Timer.h"
bogdanm 13:0645d8841f51 17 #include "us_ticker_api.h"
bogdanm 13:0645d8841f51 18
bogdanm 13:0645d8841f51 19 namespace mbed {
bogdanm 13:0645d8841f51 20
mbed_official 212:34d62c0b2af6 21 Timer::Timer() : _running(), _start(), _time() {
bogdanm 13:0645d8841f51 22 reset();
bogdanm 13:0645d8841f51 23 }
bogdanm 13:0645d8841f51 24
bogdanm 13:0645d8841f51 25 void Timer::start() {
mbed_official 358:9d7ef901f004 26 if (!_running) {
mbed_official 358:9d7ef901f004 27 _start = us_ticker_read();
mbed_official 358:9d7ef901f004 28 _running = 1;
mbed_official 358:9d7ef901f004 29 }
bogdanm 13:0645d8841f51 30 }
bogdanm 13:0645d8841f51 31
bogdanm 13:0645d8841f51 32 void Timer::stop() {
bogdanm 13:0645d8841f51 33 _time += slicetime();
bogdanm 13:0645d8841f51 34 _running = 0;
bogdanm 13:0645d8841f51 35 }
bogdanm 13:0645d8841f51 36
bogdanm 13:0645d8841f51 37 int Timer::read_us() {
bogdanm 13:0645d8841f51 38 return _time + slicetime();
bogdanm 13:0645d8841f51 39 }
bogdanm 13:0645d8841f51 40
bogdanm 13:0645d8841f51 41 float Timer::read() {
bogdanm 13:0645d8841f51 42 return (float)read_us() / 1000000.0f;
bogdanm 13:0645d8841f51 43 }
bogdanm 13:0645d8841f51 44
bogdanm 13:0645d8841f51 45 int Timer::read_ms() {
bogdanm 13:0645d8841f51 46 return read_us() / 1000;
bogdanm 13:0645d8841f51 47 }
bogdanm 13:0645d8841f51 48
bogdanm 13:0645d8841f51 49 int Timer::slicetime() {
bogdanm 13:0645d8841f51 50 if (_running) {
bogdanm 13:0645d8841f51 51 return us_ticker_read() - _start;
bogdanm 13:0645d8841f51 52 } else {
bogdanm 13:0645d8841f51 53 return 0;
bogdanm 13:0645d8841f51 54 }
bogdanm 13:0645d8841f51 55 }
bogdanm 13:0645d8841f51 56
bogdanm 13:0645d8841f51 57 void Timer::reset() {
bogdanm 13:0645d8841f51 58 _start = us_ticker_read();
bogdanm 13:0645d8841f51 59 _time = 0;
bogdanm 13:0645d8841f51 60 }
bogdanm 13:0645d8841f51 61
bogdanm 13:0645d8841f51 62 #ifdef MBED_OPERATORS
bogdanm 13:0645d8841f51 63 Timer::operator float() {
bogdanm 13:0645d8841f51 64 return read();
bogdanm 13:0645d8841f51 65 }
bogdanm 13:0645d8841f51 66 #endif
bogdanm 13:0645d8841f51 67
bogdanm 13:0645d8841f51 68 } // namespace mbed