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mbed library sources

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Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.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

api/Timer.h@13:0645d8841f51, 2013-08-05 (annotated)

Committer:
bogdanm
Date:
Mon Aug 05 14:12:34 2013 +0300
Revision:
13:0645d8841f51
Parent:
10:3bc89ef62ce7
Child:
525:c320967f86b9
Update mbed sources to revision 64

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_TIMER_H
bogdanm 13:0645d8841f51 17 #define MBED_TIMER_H
bogdanm 13:0645d8841f51 18
bogdanm 13:0645d8841f51 19 #include "platform.h"
bogdanm 13:0645d8841f51 20
bogdanm 13:0645d8841f51 21 namespace mbed {
bogdanm 13:0645d8841f51 22
bogdanm 13:0645d8841f51 23 /** A general purpose timer
bogdanm 13:0645d8841f51 24 *
bogdanm 13:0645d8841f51 25 * Example:
bogdanm 13:0645d8841f51 26 * @code
bogdanm 13:0645d8841f51 27 * // Count the time to toggle a LED
bogdanm 13:0645d8841f51 28 *
bogdanm 13:0645d8841f51 29 * #include "mbed.h"
bogdanm 13:0645d8841f51 30 *
bogdanm 13:0645d8841f51 31 * Timer timer;
bogdanm 13:0645d8841f51 32 * DigitalOut led(LED1);
bogdanm 13:0645d8841f51 33 * int begin, end;
bogdanm 13:0645d8841f51 34 *
bogdanm 13:0645d8841f51 35 * int main() {
bogdanm 13:0645d8841f51 36 * timer.start();
bogdanm 13:0645d8841f51 37 * begin = timer.read_us();
bogdanm 13:0645d8841f51 38 * led = !led;
bogdanm 13:0645d8841f51 39 * end = timer.read_us();
bogdanm 13:0645d8841f51 40 * printf("Toggle the led takes %d us", end - begin);
bogdanm 13:0645d8841f51 41 * }
bogdanm 13:0645d8841f51 42 * @endcode
bogdanm 13:0645d8841f51 43 */
bogdanm 13:0645d8841f51 44 class Timer {
bogdanm 13:0645d8841f51 45
bogdanm 13:0645d8841f51 46 public:
bogdanm 13:0645d8841f51 47 Timer();
bogdanm 13:0645d8841f51 48
bogdanm 13:0645d8841f51 49 /** Start the timer
bogdanm 13:0645d8841f51 50 */
bogdanm 13:0645d8841f51 51 void start();
bogdanm 13:0645d8841f51 52
bogdanm 13:0645d8841f51 53 /** Stop the timer
bogdanm 13:0645d8841f51 54 */
bogdanm 13:0645d8841f51 55 void stop();
bogdanm 13:0645d8841f51 56
bogdanm 13:0645d8841f51 57 /** Reset the timer to 0.
bogdanm 13:0645d8841f51 58 *
bogdanm 13:0645d8841f51 59 * If it was already counting, it will continue
bogdanm 13:0645d8841f51 60 */
bogdanm 13:0645d8841f51 61 void reset();
bogdanm 13:0645d8841f51 62
bogdanm 13:0645d8841f51 63 /** Get the time passed in seconds
bogdanm 13:0645d8841f51 64 */
bogdanm 13:0645d8841f51 65 float read();
bogdanm 13:0645d8841f51 66
bogdanm 13:0645d8841f51 67 /** Get the time passed in mili-seconds
bogdanm 13:0645d8841f51 68 */
bogdanm 13:0645d8841f51 69 int read_ms();
bogdanm 13:0645d8841f51 70
bogdanm 13:0645d8841f51 71 /** Get the time passed in micro-seconds
bogdanm 13:0645d8841f51 72 */
bogdanm 13:0645d8841f51 73 int read_us();
bogdanm 13:0645d8841f51 74
bogdanm 13:0645d8841f51 75 #ifdef MBED_OPERATORS
bogdanm 13:0645d8841f51 76 operator float();
bogdanm 13:0645d8841f51 77 #endif
bogdanm 13:0645d8841f51 78
bogdanm 13:0645d8841f51 79 protected:
bogdanm 13:0645d8841f51 80 int slicetime();
bogdanm 13:0645d8841f51 81 int _running; // whether the timer is running
bogdanm 13:0645d8841f51 82 unsigned int _start; // the start time of the latest slice
bogdanm 13:0645d8841f51 83 int _time; // any accumulated time from previous slices
bogdanm 13:0645d8841f51 84 };
bogdanm 13:0645d8841f51 85
bogdanm 13:0645d8841f51 86 } // namespace mbed
bogdanm 13:0645d8841f51 87
bogdanm 13:0645d8841f51 88 #endif