51 lines
1.6 KiB
C++
51 lines
1.6 KiB
C++
#include "button.h"
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#define DEBOUNCETIME 20 //time to not check for inputs after key press
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#define BUTTONTIMEHOLD 750 //time for button hold
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#define BUTTONTIMEHOLDLONG 3000 //time for button long hold
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Button::Button() {
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}
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void Button::update(long millis, boolean state)
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{
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//example: state=!digitalRead(PIN_BTNLEFT)
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//Short press (true when button short pressed, on release)
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_button=false;
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//long press (true when button is held down for BUTTONTIMEHOLD, on time elapsed)
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_button_hold=false;
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if (millis-_millis_lastinput>DEBOUNCETIME) //Button debouncing
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{
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if (_timebuttonpressed == 0 && state){ //first time pressed down. (low when pressed)
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_timebuttonpressed=millis; //set time of button press
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_millis_lastinput=millis; //for debouncing
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}else if(_timebuttonpressed != 0 && !state){ //button released (was pressed)
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if (millis-_timebuttonpressed < BUTTONTIMEHOLD){ //short press
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_button=true;
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}
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_timebuttonpressed=0; //re-enable after short press and release from hold
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_millis_lastinput=millis; //for debouncing
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}else if(millis-_timebuttonpressed >= BUTTONTIMEHOLD && _timebuttonpressed>0){ //held down long enough and not already hold triggered
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_button_hold=true;
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_timebuttonpressed=-1; //-1 as flag for hold triggered
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}
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}
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if ( _button ) {
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_millis_lastinput=millis; //for debouncing
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}
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}
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boolean Button::buttonPressed()
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{
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return _button;
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}
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boolean Button::buttonHold()
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{
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return _button_hold;
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}
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