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mbed/Ticker.h
- Committer:
- antbig
- Date:
- 2016-04-13
- Revision:
- 0:ad97421fb1fb
File content as of revision 0:ad97421fb1fb:
/* mbed Microcontroller Library - Ticker * Copyright (c) 2007-2009 ARM Limited. All rights reserved. */ #ifndef MBED_TICKER_H #define MBED_TICKER_H #include "TimerEvent.h" #include "FunctionPointer.h" namespace mbed { /* Class: Ticker * A Ticker is used to call a function at a recurring interval * * You can use as many seperate Ticker objects as you require. * * Example: * > // Toggle the blinking led after 5 seconds * > * > #include "mbed.h" * > * > Ticker timer; * > DigitalOut led1(LED1); * > DigitalOut led2(LED2); * > * > int flip = 0; * > * > void attime() { * > flip = !flip; * > } * > * > int main() { * > timer.attach(&attime, 5); * > while(1) { * > if(flip == 0) { * > led1 = !led1; * > } else { * > led2 = !led2; * > } * > wait(0.2); * > } * > } * */ class Ticker : public TimerEvent { public: /* Function: attach * Attach a function to be called by the Ticker, specifiying the interval in seconds * * Variables: * fptr - pointer to the function to be called * t - the time between calls in seconds */ void attach(void (*fptr)(void), float t) { attach_us(fptr, t * 1000000.0f); } /* Function: attach * Attach a member function to be called by the Ticker, specifiying the interval in seconds * * Variables: * tptr - pointer to the object to call the member function on * mptr - pointer to the member function to be called * t - the time between calls in seconds */ template<typename T> void attach(T* tptr, void (T::*mptr)(void), float t) { attach_us(tptr, mptr, t * 1000000.0f); } /* Function: attach_us * Attach a function to be called by the Ticker, specifiying the interval in micro-seconds * * Variables: * fptr - pointer to the function to be called * t - the time between calls in micro-seconds */ void attach_us(void (*fptr)(void), unsigned int t) { _function.attach(fptr); setup(t); } /* Function: attach_us * Attach a member function to be called by the Ticker, specifiying the interval in micro-seconds * * Variables: * tptr - pointer to the object to call the member function on * mptr - pointer to the member function to be called * t - the time between calls in micro-seconds */ template<typename T> void attach_us(T* tptr, void (T::*mptr)(void), unsigned int t) { _function.attach(tptr, mptr); setup(t); } /* Function: detach * Detach the function */ void detach(); protected: void setup(unsigned int t); virtual void handler(); unsigned int _delay; FunctionPointer _function; }; } // namespace mbed #endif