wordclock/libraries/Button/Button.cpp

#include <Arduino.h>

#include <Wire.h>

#include "Button.h"

Button::Button(uint8_t _pin, uint8_t _mode)
{
  pin = _pin;
  mode = _mode;
}

void Button::begin()
{
  if (mode == LOW)
  {
    pinMode(pin, INPUT_PULLUP);
  }
  else if (mode == HIGH)
  {
    pinMode(pin, INPUT);
  }
}

void Button::loop(ButtonCallbackFunction callback)
{
  if (digitalRead(pin) == mode)
  {
    (*callback)();
    // debounce
    delay(250);
  }
}