#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#include <RTClib.h>

RTC_DS1307 rtc;

#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire);

void setup() {
  Wire.begin();
  rtc.begin();

  if (!rtc.isrunning()) {
    rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
  }

  display.begin(SSD1306_PAGEADDR, SEEK_SET);
  display.display();
  delay(2000);  // Pause for 2 seconds

  display.clearDisplay();
}

void loop() {
  DateTime now = rtc.now();

  display.clearDisplay();
  display.setTextSize(1);
  display.setTextColor(SSD1306_WHITE);
  display.setCursor(0, 0);

  // Print the time
  display.println(now.toString("HH:mm:ss"));

  display.display();
  delay(1000);  // Update every second
}