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/* ClickButton
A library that decodes multiple clicks on one button.
Also copes with long clicks and click-and-hold.
Usage: ClickButton buttonObject(pin [LOW/HIGH, [CLICKBTN_PULLUP]]);
where LOW/HIGH denotes active LOW or HIGH button (default is LOW)
CLICKBTN_PULLUP is only possible with active low buttons.
Returned click counts:
A positive number denotes the number of (short) clicks after a released button
A negative number denotes the number of "long" clicks
This is the OPPOSITE/negative of click codes from the last pre-2013 versions!
(this seemed more logical and simpler, so I finally changed it)
Based on the Debounce example at arduino playground site
Copyright (C) 2010,2012, 2013 raron
GNU GPLv3 license
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <>.
2013.08.29 - Some small clean-up of code, more sensible variable names etc.
Added another example code for multiple buttons in an object array
2013.04.23 - A "minor" debugging: active-high buttons now work (wops)!
Thanks goes to John F. H. for pointing that out!
2013.02.17 - Some improvements, simplified click codes.
Added a LED fader example. Thanks to Tom K. for the idea.
2012.01.31 - Tiny update for Arduino 1.0
2010.06.15 - First version. Basically just a small OOP programming exercise.
// -------- clickButton.h --------
#include "Particle.h"
class ClickButton
ClickButton(uint8_t buttonPin);
ClickButton(uint8_t buttonPin, boolean active);
ClickButton(uint8_t buttonPin, boolean active, boolean internalPullup);
void Update();
int clicks; // button click counts to return
boolean depressed; // the currently debounced button (press) state (presumably it is not sad :)
long debounceTime;
long multiclickTime;
long longClickTime;
uint8_t _pin; // Arduino pin connected to the button
boolean _activeHigh; // Type of button: Active-low = 0 or active-high = 1
boolean _btnState; // Current appearant button state
boolean _lastState; // previous button reading
int _clickCount; // Number of button clicks within multiclickTime milliseconds
long _lastBounceTime; // the last time the button input pin was toggled, due to noise or a press
// -------- end clickButton.h --------