clickButton.h

/*    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
 
NOTE!
 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
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 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 <http://www.gnu.org/licenses/>.

 Contact: raronzen@gmail.com

 History:
 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 "application.h"

#define CLICKBTN_PULLUP HIGH

class ClickButton
{
  public:
    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;
  private:
    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 --------