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

LiquidCrystal_I2C lcd(0x27, 16, 2);  // 1604 LCD

// LED pinlar
const int redLED = 12;
const int yellowLED = 11;
const int greenLED = 10;

void setup() {
  lcd.begin(16, 2);
  lcd.backlight();

  pinMode(redLED, OUTPUT);
  pinMode(yellowLED, OUTPUT);
  pinMode(greenLED, OUTPUT);

  lcd.setCursor(0, 0);
  lcd.print("   Svetofor tizim");
  delay(2000);
  lcd.clear();
}

void loop() {
  // Qizil yoqilsin
  digitalWrite(redLED, HIGH);
  lcd.setCursor(0, 0);
  lcd.print("   TO'XTANG!     ");
  delay(3000);

  // Sariq 3 marta miltillasin
  blinkYellow(3);

  // Yashil yoqilsin
  digitalWrite(redLED, LOW);
  digitalWrite(greenLED, HIGH);
  lcd.setCursor(0, 0);
  lcd.print("   YURING!       ");
  delay(3000);

  // Sariq 3 marta miltillasin
  blinkYellow(3);

  // Yashil o‘chib, qayta qizil yoqiladi
  digitalWrite(greenLED, LOW);
}

// Sariq chiroq 3 marta miltillovchi funksiya
void blinkYellow(int times) {
  for (int i = 0; i < times; i++) {
    digitalWrite(yellowLED, HIGH);
    lcd.setCursor(0, 0);
    lcd.print("   DIQQAT!       ");
    delay(500);
    digitalWrite(yellowLED, LOW);
    delay(500);
  }
}