#include <Arduino.h>

class LedControl
{
public:
  LedControl(int pin, int high = HIGH, int init = LOW)
  {
    _pin = pin;
    _high = high;
    pinMode(_pin, OUTPUT);
    (init == high) ? on() : off();
  }

  void set(int state)
  {
    _state = state;
    digitalWrite(_pin, state);
  }
  void off() { set(!_high); }
  void on()  { set(_high); }
  void toggle() { (_state == _high) ? off() : on(); }

  void blink(const unsigned long interval)
  {
    static unsigned long previous_millis = 0;
    unsigned long current_millis = millis();
    if (current_millis - previous_millis >= interval)
    {
      previous_millis = current_millis;
      toggle();
    }
  }

private:
  int _state;
  int _high;
  int _pin;
};