#include <Wire.h>
#include <RTClib.h>
#include <LiquidCrystal_I2C.h>

// Initialize RTC and LCD
RTC_DS3231 rtc;
LiquidCrystal_I2C lcd(0x27, 16, 2);  // Change 0x27 if your I2C address is different

void setup() {
  // Start serial communication for debugging
  Serial.begin(115200);

  // Initialize the LCD with the correct columns and rows
  lcd.begin(16, 2);
  lcd.backlight();  // Turn on the LCD backlight

  // Print a message to ensure LCD is working
  lcd.setCursor(0, 0);
  lcd.print("Initializing...");

  // Initialize the RTC
  if (!rtc.begin()) {
    Serial.println("Couldn't find RTC");
    lcd.clear();
    lcd.setCursor(0, 0);
    lcd.print("RTC Not Found");
    while (1);  // Halt if RTC is not found
  }

  // Set RTC time if it lost power
  if (rtc.lostPower()) {
    Serial.println("RTC lost power, setting the time!");
    rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));  // Set to compile time
  }

  // Clear the LCD and set the header
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Time:");
}

void loop() {
  // Get the current time from the RTC
  DateTime now = rtc.now();

  // Format time as HH:MM:SS
  char timeStr[9];  // "HH:MM:SS"
  snprintf(timeStr, sizeof(timeStr), "%02d:%02d:%02d", now.hour(), now.minute(), now.second());

  // Print the formatted time to the serial monitor (for debugging)
  Serial.println(timeStr);

  // Display time on the LCD
  lcd.setCursor(0, 1);  // Move to the second row, first column
  lcd.print(timeStr);   // Print the time
  lcd.display();        // Ensure the display is updated

  delay(1000);  // Update every second
}