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

// Initialize the LCD with the I2C address (usually 0x27 or 0x3F)
LiquidCrystal_I2C lcd(0x27, 16, 2);

// Initialize the RTC
RTC_DS1307 rtc;

void setup() {
  // Start the serial communication for debugging
  Serial.begin(9600);
  
  // Initialize the LCD
  lcd.init();//begin ไม่ถูก
  lcd.backlight();

  // Check if the RTC is connected properly
  if (!rtc.begin()) {
    lcd.clear();
    lcd.print("Couldn't find RTC");
    Serial.println("Couldn't find RTC");
    while (1);
  }

  // Check if the RTC is running, if not, set the time
  if (!rtc.isrunning()) {
    Serial.println("RTC is NOT running!");
    // Uncomment the next line to set the RTC to the current time
    // rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
  }
}

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

  // Clear the LCD before displaying new information
  lcd.clear();

  // Display the date in format: YYYY-MM-DD
  lcd.setCursor(0, 0);
  lcd.print(now.year(), DEC);
  lcd.print('/');
  lcd.print(now.month(), DEC);
  lcd.print('/');
  lcd.print(now.day(), DEC);

  // Display the time in format: HH:MM:SS
  lcd.setCursor(0, 1);
  lcd.print(now.hour(), DEC);
  lcd.print(':');
  lcd.print(now.minute(), DEC);
  lcd.print(':');
  lcd.print(now.second(), DEC);

  // Wait for 1 second before refreshing the display
  delay(1000);
}
*/
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
#include <RTClib.h>

// Initialize the LCD with the I2C address (usually 0x27 or 0x3F)
LiquidCrystal_I2C lcd(0x27, 16, 2);

// Initialize the RTC
RTC_DS1307 rtc;

// Function to get the name of the day of the week
String getDayOfWeek(uint8_t dayOfWeek) {
  switch (dayOfWeek) {
    case 0: return "Sun";
    case 1: return "Mon";
    case 2: return "Tue";
    case 3: return "Wed";
    case 4: return "Thu";
    case 5: return "Fri";
    case 6: return "Sat";
    default: return "";
  }
}

void setup() {
  // Start the serial communication for debugging
  Serial.begin(9600);
  
  // Initialize the LCD
  lcd.init();//ต้องแก้จากbeginเป็นinit
  lcd.backlight();

  // Check if the RTC is connected properly
  if (!rtc.begin()) {
    lcd.clear();
    lcd.print("Couldn't find RTC");
    Serial.println("Couldn't find RTC");
    while (1);
  }

  // Check if the RTC is running, if not, set the time
  if (!rtc.isrunning()) {
    Serial.println("RTC is NOT running!");
    // Uncomment the next line to set the RTC to the current time
    // rtc.adjust(DateTime(F(__DATE__), F(__TIME__)));
  }
}

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

  // Clear the LCD before displaying new information
  lcd.clear();

  // Display the date in format: YYYY-MM-DD
  lcd.setCursor(0, 0);
  lcd.print(now.year(), DEC);
  lcd.print('/');
  lcd.print(now.month(), DEC);
  lcd.print('/');
  lcd.print(now.day(), DEC);

  // Display the day of the week
  lcd.setCursor(10, 0);  // Adjusted position to fit in the first row
  lcd.print(getDayOfWeek(now.dayOfTheWeek()));

  // Display the time in format: HH:MM:SS
  lcd.setCursor(0, 1);
  lcd.print(now.hour(), DEC);
  lcd.print(':');
  lcd.print(now.minute(), DEC);
  lcd.print(':');
  lcd.print(now.second(), DEC);

  // Wait for 1 second before refreshing the display
  delay(1000);
}