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

LiquidCrystal_I2C lcd(0x27, 20, 4);

const int redLedPin = 2; 
const int blueLedPin = 4; 

void setup() {
  pinMode(redLedPin, OUTPUT);
  pinMode(blueLedPin, OUTPUT);

  // Inisialisasi LCD
  lcd.init();
  lcd.backlight();
  
  // Tampilkan pesan awal di LCD
  lcd.setCursor(0, 0);
  lcd.print("PRAKTEK ESP32");
  lcd.setCursor(0, 1);
  lcd.print("LCD - LED");
}

void loop() {
  // LED Merah menyala, LED Biru padam
  digitalWrite(redLedPin, HIGH);
  digitalWrite(blueLedPin, LOW);

  // Tampilkan pesan di LCD
  lcd.setCursor(0, 2);
  lcd.print("LED MERAH NYALA");
  lcd.setCursor(0, 3);
  lcd.print("LED BIRU PADAM");
  delay(1000); // 
  

  // Bersihkan LCD
  lcd.setCursor(0, 2);
  lcd.print("                ");
  lcd.setCursor(0, 3);
  lcd.print("                ");


  // LED Biru menyala, LED Merah padam
  digitalWrite(redLedPin, LOW);
  digitalWrite(blueLedPin, HIGH);

  


  // Tampilkan pesan di LCD
  lcd.setCursor(0, 2);
  lcd.print("LED MERAH PADAM");
  lcd.setCursor(0, 3);
  lcd.print("LED BIRU NYALA ");
  delay(1000); 

  // Bersihkan LCD
  lcd.setCursor(0, 2);
  lcd.print("                ");
  lcd.setCursor(0, 3);
  lcd.print("                ");
}