Vladimir Vana / mbed

pro vyuku PSS v Jecne

Timer.h@0:23d1f73bf130, 2017-09-24 (annotated)

Committer:
vladvana
Date:
Sun Sep 24 12:31:52 2017 +0000
Revision:
0:23d1f73bf130
podklady pro cviceni z PSS

Who changed what in which revision?

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vladvana 0:23d1f73bf130 1 /* mbed Microcontroller Library
vladvana 0:23d1f73bf130 2 * Copyright (c) 2006-2013 ARM Limited
vladvana 0:23d1f73bf130 3 *
vladvana 0:23d1f73bf130 4 * Licensed under the Apache License, Version 2.0 (the "License");
vladvana 0:23d1f73bf130 5 * you may not use this file except in compliance with the License.
vladvana 0:23d1f73bf130 6 * You may obtain a copy of the License at
vladvana 0:23d1f73bf130 7 *
vladvana 0:23d1f73bf130 8 * http://www.apache.org/licenses/LICENSE-2.0
vladvana 0:23d1f73bf130 9 *
vladvana 0:23d1f73bf130 10 * Unless required by applicable law or agreed to in writing, software
vladvana 0:23d1f73bf130 11 * distributed under the License is distributed on an "AS IS" BASIS,
vladvana 0:23d1f73bf130 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
vladvana 0:23d1f73bf130 13 * See the License for the specific language governing permissions and
vladvana 0:23d1f73bf130 14 * limitations under the License.
vladvana 0:23d1f73bf130 15 */
vladvana 0:23d1f73bf130 16 #ifndef MBED_TIMER_H
vladvana 0:23d1f73bf130 17 #define MBED_TIMER_H
vladvana 0:23d1f73bf130 18
vladvana 0:23d1f73bf130 19 #include "platform.h"
vladvana 0:23d1f73bf130 20 #include "ticker_api.h"
vladvana 0:23d1f73bf130 21
vladvana 0:23d1f73bf130 22 namespace mbed {
vladvana 0:23d1f73bf130 23
vladvana 0:23d1f73bf130 24 /** A general purpose timer
vladvana 0:23d1f73bf130 25 *
vladvana 0:23d1f73bf130 26 * Example:
vladvana 0:23d1f73bf130 27 * @code
vladvana 0:23d1f73bf130 28 * // Count the time to toggle a LED
vladvana 0:23d1f73bf130 29 *
vladvana 0:23d1f73bf130 30 * #include "mbed.h"
vladvana 0:23d1f73bf130 31 *
vladvana 0:23d1f73bf130 32 * Timer timer;
vladvana 0:23d1f73bf130 33 * DigitalOut led(LED1);
vladvana 0:23d1f73bf130 34 * int begin, end;
vladvana 0:23d1f73bf130 35 *
vladvana 0:23d1f73bf130 36 * int main() {
vladvana 0:23d1f73bf130 37 * timer.start();
vladvana 0:23d1f73bf130 38 * begin = timer.read_us();
vladvana 0:23d1f73bf130 39 * led = !led;
vladvana 0:23d1f73bf130 40 * end = timer.read_us();
vladvana 0:23d1f73bf130 41 * printf("Toggle the led takes %d us", end - begin);
vladvana 0:23d1f73bf130 42 * }
vladvana 0:23d1f73bf130 43 * @endcode
vladvana 0:23d1f73bf130 44 */
vladvana 0:23d1f73bf130 45 class Timer {
vladvana 0:23d1f73bf130 46
vladvana 0:23d1f73bf130 47 public:
vladvana 0:23d1f73bf130 48 Timer();
vladvana 0:23d1f73bf130 49 Timer(const ticker_data_t *data);
vladvana 0:23d1f73bf130 50
vladvana 0:23d1f73bf130 51 /** Start the timer
vladvana 0:23d1f73bf130 52 */
vladvana 0:23d1f73bf130 53 void start();
vladvana 0:23d1f73bf130 54
vladvana 0:23d1f73bf130 55 /** Stop the timer
vladvana 0:23d1f73bf130 56 */
vladvana 0:23d1f73bf130 57 void stop();
vladvana 0:23d1f73bf130 58
vladvana 0:23d1f73bf130 59 /** Reset the timer to 0.
vladvana 0:23d1f73bf130 60 *
vladvana 0:23d1f73bf130 61 * If it was already counting, it will continue
vladvana 0:23d1f73bf130 62 */
vladvana 0:23d1f73bf130 63 void reset();
vladvana 0:23d1f73bf130 64
vladvana 0:23d1f73bf130 65 /** Get the time passed in seconds
vladvana 0:23d1f73bf130 66 */
vladvana 0:23d1f73bf130 67 float read();
vladvana 0:23d1f73bf130 68
vladvana 0:23d1f73bf130 69 /** Get the time passed in mili-seconds
vladvana 0:23d1f73bf130 70 */
vladvana 0:23d1f73bf130 71 int read_ms();
vladvana 0:23d1f73bf130 72
vladvana 0:23d1f73bf130 73 /** Get the time passed in micro-seconds
vladvana 0:23d1f73bf130 74 */
vladvana 0:23d1f73bf130 75 int read_us();
vladvana 0:23d1f73bf130 76
vladvana 0:23d1f73bf130 77 #ifdef MBED_OPERATORS
vladvana 0:23d1f73bf130 78 operator float();
vladvana 0:23d1f73bf130 79 #endif
vladvana 0:23d1f73bf130 80
vladvana 0:23d1f73bf130 81 protected:
vladvana 0:23d1f73bf130 82 int slicetime();
vladvana 0:23d1f73bf130 83 int _running; // whether the timer is running
vladvana 0:23d1f73bf130 84 unsigned int _start; // the start time of the latest slice
vladvana 0:23d1f73bf130 85 int _time; // any accumulated time from previous slices
vladvana 0:23d1f73bf130 86 const ticker_data_t *_ticker_data;
vladvana 0:23d1f73bf130 87 };
vladvana 0:23d1f73bf130 88
vladvana 0:23d1f73bf130 89 } // namespace mbed
vladvana 0:23d1f73bf130 90
vladvana 0:23d1f73bf130 91 #endif