#include <Arduino.h>

class Blink {
private:
  const uint8_t LED_PIN = LED_BUILTIN;
  uint32_t last_toggle;
  bool state;
  
public:
  void begin() { pinMode(LED_PIN, OUTPUT); state = false; last_toggle = 0; }
  
  void update() {
    uint32_t now = millis();
    if (now - last_toggle >= 500) { 
      state = !state;
      digitalWrite(LED_PIN, state);
      last_toggle = now;
    }
  }
};

Blink blink;

void setup() { 
  blink.begin(); 
  Serial1.begin(115200);
  Serial1.println("Optimized Blink Ready");
}

void loop() { 
  blink.update(); 
}