Jing Qiu / mbed

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Fork of mbed by gokmen ascioglu

Ticker.h@0:a8fa94490a0a, 2012-09-22 (annotated)

Committer:
gokmenascioglu
Date:
Sat Sep 22 10:32:07 2012 +0000
Revision:
0:a8fa94490a0a
alican library

Who changed what in which revision?

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gokmenascioglu 0:a8fa94490a0a 1 /* mbed Microcontroller Library - Ticker
gokmenascioglu 0:a8fa94490a0a 2 * Copyright (c) 2007-2009 ARM Limited. All rights reserved.
gokmenascioglu 0:a8fa94490a0a 3 */
gokmenascioglu 0:a8fa94490a0a 4
gokmenascioglu 0:a8fa94490a0a 5 #ifndef MBED_TICKER_H
gokmenascioglu 0:a8fa94490a0a 6 #define MBED_TICKER_H
gokmenascioglu 0:a8fa94490a0a 7
gokmenascioglu 0:a8fa94490a0a 8 #include "TimerEvent.h"
gokmenascioglu 0:a8fa94490a0a 9 #include "FunctionPointer.h"
gokmenascioglu 0:a8fa94490a0a 10
gokmenascioglu 0:a8fa94490a0a 11 namespace mbed {
gokmenascioglu 0:a8fa94490a0a 12
gokmenascioglu 0:a8fa94490a0a 13 /* Class: Ticker
gokmenascioglu 0:a8fa94490a0a 14 * A Ticker is used to call a function at a recurring interval
gokmenascioglu 0:a8fa94490a0a 15 *
gokmenascioglu 0:a8fa94490a0a 16 * You can use as many seperate Ticker objects as you require.
gokmenascioglu 0:a8fa94490a0a 17 *
gokmenascioglu 0:a8fa94490a0a 18 * Example:
gokmenascioglu 0:a8fa94490a0a 19 * > // Toggle the blinking led after 5 seconds
gokmenascioglu 0:a8fa94490a0a 20 * >
gokmenascioglu 0:a8fa94490a0a 21 * > #include "mbed.h"
gokmenascioglu 0:a8fa94490a0a 22 * >
gokmenascioglu 0:a8fa94490a0a 23 * > Ticker timer;
gokmenascioglu 0:a8fa94490a0a 24 * > DigitalOut led1(LED1);
gokmenascioglu 0:a8fa94490a0a 25 * > DigitalOut led2(LED2);
gokmenascioglu 0:a8fa94490a0a 26 * >
gokmenascioglu 0:a8fa94490a0a 27 * > int flip = 0;
gokmenascioglu 0:a8fa94490a0a 28 * >
gokmenascioglu 0:a8fa94490a0a 29 * > void attime() {
gokmenascioglu 0:a8fa94490a0a 30 * > flip = !flip;
gokmenascioglu 0:a8fa94490a0a 31 * > }
gokmenascioglu 0:a8fa94490a0a 32 * >
gokmenascioglu 0:a8fa94490a0a 33 * > int main() {
gokmenascioglu 0:a8fa94490a0a 34 * > timer.attach(&attime, 5);
gokmenascioglu 0:a8fa94490a0a 35 * > while(1) {
gokmenascioglu 0:a8fa94490a0a 36 * > if(flip == 0) {
gokmenascioglu 0:a8fa94490a0a 37 * > led1 = !led1;
gokmenascioglu 0:a8fa94490a0a 38 * > } else {
gokmenascioglu 0:a8fa94490a0a 39 * > led2 = !led2;
gokmenascioglu 0:a8fa94490a0a 40 * > }
gokmenascioglu 0:a8fa94490a0a 41 * > wait(0.2);
gokmenascioglu 0:a8fa94490a0a 42 * > }
gokmenascioglu 0:a8fa94490a0a 43 * > }
gokmenascioglu 0:a8fa94490a0a 44 *
gokmenascioglu 0:a8fa94490a0a 45 */
gokmenascioglu 0:a8fa94490a0a 46 class Ticker : public TimerEvent {
gokmenascioglu 0:a8fa94490a0a 47
gokmenascioglu 0:a8fa94490a0a 48 public:
gokmenascioglu 0:a8fa94490a0a 49
gokmenascioglu 0:a8fa94490a0a 50 /* Function: attach
gokmenascioglu 0:a8fa94490a0a 51 * Attach a function to be called by the Ticker, specifiying the interval in seconds
gokmenascioglu 0:a8fa94490a0a 52 *
gokmenascioglu 0:a8fa94490a0a 53 * Variables:
gokmenascioglu 0:a8fa94490a0a 54 * fptr - pointer to the function to be called
gokmenascioglu 0:a8fa94490a0a 55 * t - the time between calls in seconds
gokmenascioglu 0:a8fa94490a0a 56 */
gokmenascioglu 0:a8fa94490a0a 57 void attach(void (*fptr)(void), float t) {
gokmenascioglu 0:a8fa94490a0a 58 attach_us(fptr, t * 1000000.0f);
gokmenascioglu 0:a8fa94490a0a 59 }
gokmenascioglu 0:a8fa94490a0a 60
gokmenascioglu 0:a8fa94490a0a 61 /* Function: attach
gokmenascioglu 0:a8fa94490a0a 62 * Attach a member function to be called by the Ticker, specifiying the interval in seconds
gokmenascioglu 0:a8fa94490a0a 63 *
gokmenascioglu 0:a8fa94490a0a 64 * Variables:
gokmenascioglu 0:a8fa94490a0a 65 * tptr - pointer to the object to call the member function on
gokmenascioglu 0:a8fa94490a0a 66 * mptr - pointer to the member function to be called
gokmenascioglu 0:a8fa94490a0a 67 * t - the time between calls in seconds
gokmenascioglu 0:a8fa94490a0a 68 */
gokmenascioglu 0:a8fa94490a0a 69 template<typename T>
gokmenascioglu 0:a8fa94490a0a 70 void attach(T* tptr, void (T::*mptr)(void), float t) {
gokmenascioglu 0:a8fa94490a0a 71 attach_us(tptr, mptr, t * 1000000.0f);
gokmenascioglu 0:a8fa94490a0a 72 }
gokmenascioglu 0:a8fa94490a0a 73
gokmenascioglu 0:a8fa94490a0a 74 /* Function: attach_us
gokmenascioglu 0:a8fa94490a0a 75 * Attach a function to be called by the Ticker, specifiying the interval in micro-seconds
gokmenascioglu 0:a8fa94490a0a 76 *
gokmenascioglu 0:a8fa94490a0a 77 * Variables:
gokmenascioglu 0:a8fa94490a0a 78 * fptr - pointer to the function to be called
gokmenascioglu 0:a8fa94490a0a 79 * t - the time between calls in micro-seconds
gokmenascioglu 0:a8fa94490a0a 80 */
gokmenascioglu 0:a8fa94490a0a 81 void attach_us(void (*fptr)(void), unsigned int t) {
gokmenascioglu 0:a8fa94490a0a 82 _function.attach(fptr);
gokmenascioglu 0:a8fa94490a0a 83 setup(t);
gokmenascioglu 0:a8fa94490a0a 84 }
gokmenascioglu 0:a8fa94490a0a 85
gokmenascioglu 0:a8fa94490a0a 86 /* Function: attach_us
gokmenascioglu 0:a8fa94490a0a 87 * Attach a member function to be called by the Ticker, specifiying the interval in micro-seconds
gokmenascioglu 0:a8fa94490a0a 88 *
gokmenascioglu 0:a8fa94490a0a 89 * Variables:
gokmenascioglu 0:a8fa94490a0a 90 * tptr - pointer to the object to call the member function on
gokmenascioglu 0:a8fa94490a0a 91 * mptr - pointer to the member function to be called
gokmenascioglu 0:a8fa94490a0a 92 * t - the time between calls in micro-seconds
gokmenascioglu 0:a8fa94490a0a 93 */
gokmenascioglu 0:a8fa94490a0a 94 template<typename T>
gokmenascioglu 0:a8fa94490a0a 95 void attach_us(T* tptr, void (T::*mptr)(void), unsigned int t) {
gokmenascioglu 0:a8fa94490a0a 96 _function.attach(tptr, mptr);
gokmenascioglu 0:a8fa94490a0a 97 setup(t);
gokmenascioglu 0:a8fa94490a0a 98 }
gokmenascioglu 0:a8fa94490a0a 99
gokmenascioglu 0:a8fa94490a0a 100 /* Function: detach
gokmenascioglu 0:a8fa94490a0a 101 * Detach the function
gokmenascioglu 0:a8fa94490a0a 102 */
gokmenascioglu 0:a8fa94490a0a 103 void detach();
gokmenascioglu 0:a8fa94490a0a 104
gokmenascioglu 0:a8fa94490a0a 105 protected:
gokmenascioglu 0:a8fa94490a0a 106
gokmenascioglu 0:a8fa94490a0a 107 void setup(unsigned int t);
gokmenascioglu 0:a8fa94490a0a 108 virtual void handler();
gokmenascioglu 0:a8fa94490a0a 109
gokmenascioglu 0:a8fa94490a0a 110 unsigned int _delay;
gokmenascioglu 0:a8fa94490a0a 111 FunctionPointer _function;
gokmenascioglu 0:a8fa94490a0a 112
gokmenascioglu 0:a8fa94490a0a 113 };
gokmenascioglu 0:a8fa94490a0a 114
gokmenascioglu 0:a8fa94490a0a 115 } // namespace mbed
gokmenascioglu 0:a8fa94490a0a 116
gokmenascioglu 0:a8fa94490a0a 117 #endif