#include <PCD8544.h>
#include <Wire.h>
#include <RTClib.h>

// A custom glyph (a smiley)...
static const byte glyph[] = { B00010000, B00110100, B00110000, B00110100, B00010000 };

static PCD8544 lcd;
RTC_DS3231 rtc;

void setup() {
  // Initialize LCD and RTC
  lcd.begin(84, 48);
  lcd.createChar(0, glyph);

  if (!rtc.begin()) {
    lcd.setCursor(0, 0);
    lcd.print("Couldn't find RTC");
    while (1);
  }

  if (rtc.lostPower()) {
    lcd.setCursor(0, 0);
    lcd.print("RTC lost power");
    rtc.adjust(DateTime(F(__DATE__), F(__TIME__))); // Set the time to compile time
  }
}

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

  // Line 1: Display time
  lcd.clear();
  lcd.setCursor(0, 0);
  lcd.print("Tm:");
  lcd.setCursor(0, 1);
  lcd.print(now.hour(), DEC);
  lcd.print(':');
  lcd.print(now.minute(), DEC);
  lcd.print(':');
  lcd.print(now.second(), DEC);
  delay(1000);

  // Line 2: Display date
  lcd.clear();
  lcd.setCursor(0, 2);
  lcd.print("Dt:");
  lcd.setCursor(0, 3);
  lcd.print(now.day(), DEC);
  lcd.print('/');
  lcd.print(now.month(), DEC);
  lcd.print('/');
  lcd.print(now.year(), DEC);
  delay(1000);
}