The simplest button debounce utility for Arduino

This library is probably the simplest button debounce ulitity for Arduino. The code is based on Jack Ganssle's debounce function that he described in his part 2 of "A Guide to Debouncing" article.

Example

#include "button.h"

Button btn1;
Button btn2;

void setup() {
  btn1.begin(2);
  btn2.begin(3);
  pinMode(LED_BUILTIN, OUTPUT);
}

void loop() {
  // press button 1 to turn on the LED
  if (btn1.debounce()) {
    digitalWrite(LED_BUILTIN, HIGH);
  }
  // press button 2 to turn off the LED
  if (btn2.debounce()) {
    digitalWrite(LED_BUILTIN, LOW);
  }
}

Refer to my blog post on the explanation on how the debounce function actually work.