Erik van Wijk / ButtonIn

A debouncing InterruptIn wrapper

ButtonIn.cpp@0:2e999fcd4c7b, 2012-02-06 (annotated)

Committer:
evwijk
Date:
Mon Feb 06 19:53:40 2012 +0000
Revision:
0:2e999fcd4c7b
Child:
1:e806603f0088

        

        
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#include "ButtonIn.h"





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ButtonIn::ButtonIn(PinName buttonPin) :





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    _button(buttonPin) {





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        _buttonCanPress = true;





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        _callback = NULL;





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        _callbackInstance = NULL;





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        _callbackMethod = NULL;





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        _button.rise(this, &ButtonIn::click);





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}





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void ButtonIn::attach(void (*method)(void)) {





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    _callback = method;





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}





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template<class T>





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void attach(T* instance, void (T::*method)(void)) {





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    _callbackInstance = (ButtonInCallbackInstance *)instance;





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    _callbackMethod = (void (ButtonInCallbackInstance::*)(void))method;





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}





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void ButtonIn::click() {





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    if (_buttonCanPress) {





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        _buttonCanPress = false;





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        _buttonDownTimeout.attach(this, &ButtonIn::reset, 0.5);





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    }





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}





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void ButtonIn::call() {





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    if (_callback != NULL)





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        (*_callback)();





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    else





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        (_callbackInstance->*_callbackMethod)();        





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}





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void ButtonIn::reset() {





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    _buttonCanPress = true;





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}