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

LiquidCrystal_I2C lcd(0x27, 16, 2);

const int led_merah = 3;
const int led_hijau = 4;
const int led_kuning = 5;
const int led_biru = 6;
const int led_ungu = 7;

const int button = 2;

int status_button = 0;
int nilaidata = 0;

void setup() {
lcd.init();
pinMode(led_merah, OUTPUT);
pinMode(led_hijau, OUTPUT);
pinMode(led_kuning, OUTPUT);
pinMode(led_biru, OUTPUT);
pinMode(led_ungu, OUTPUT);

pinMode(button, INPUT_PULLUP);

}

void loop() {
status_button = digitalRead(button);
if(status_button == LOW){
 if(nilaidata == 0)
 digitalWrite(led_merah, LOW);
 digitalWrite(led_hijau, LOW);
 digitalWrite(led_kuning, LOW);
 digitalWrite(led_biru, LOW);
 digitalWrite(led_ungu, LOW);
 lcd.setCursor(0,0);
 lcd.print("NILAI DATA : ");
 lcd.print(nilaidata);
 lcd.setCursor(0,1);
 lcd.print("ALL LAMPU OFF");
 nilaidata++;
 delay(500);
}

else if(nilaidata == 1){
  digitalWrite(led_merah, HIGH);
  lcd.setCursor(0,0);
  lcd.print("NILAI DATA : ");
  lcd.print(nilaidata);
  lcd.setCursor(0,1);
  lcd.print("LAMPU MERAH ON   ");
  nilaidata++;
  delay(500);
}
else if(nilaidata == 2){
  digitalWrite(led_hijau, HIGH);
  lcd.setCursor(0,0);
  lcd.print("NILAI DATA : ");
  lcd.print(nilaidata);
  lcd.setCursor(0,1);
  lcd.print("LAMPU HIJAU ON   ");
  nilaidata++;
  delay(500);
}
else if(nilaidata == 3){
  digitalWrite(led_kuning, HIGH);
  lcd.setCursor(0,0);
  lcd.print("NILAI DATA : ");
  lcd.print(nilaidata);
  lcd.setCursor(0,1);
  lcd.print("LAMPU KUNING ON   ");
  nilaidata++;
  delay(500);
}
else if(nilaidata == 4){
  digitalWrite(led_biru, HIGH);
  lcd.setCursor(0,0);
  lcd.print("NILAI DATA : ");
  lcd.print(nilaidata);
  lcd.setCursor(0,1);
  lcd.print("LAMPU BIRU ON   ");
  nilaidata++;
  delay(500);
}
else if(nilaidata == 5){
  digitalWrite(led_ungu, HIGH);
  lcd.setCursor(0,0);
  lcd.print("NILAI DATA : ");
  lcd.print(nilaidata);
  lcd.setCursor(0,1);
  lcd.print("LAMPU UNGU ON   ");
  nilaidata++;
  delay(500);
}
else if(nilaidata == 6){
  lcd.setCursor(0,0);
  lcd.print("NILAI DATA : ");
  lcd.print(nilaidata);
  lcd.setCursor(0,1);
  lcd.print(" ALL LAMPU BLINK   ");

for (int i = 0; i < 5; i++)
digitalWrite(led_merah, LOW);
delay(200);
digitalWrite(led_hijau, LOW);
delay(200);
digitalWrite(led_kuning, LOW);
delay(200);
digitalWrite(led_biru, LOW);
delay(200);
digitalWrite(led_ungu, LOW);
delay(200);
digitalWrite(led_merah, HIGH);
digitalWrite(led_hijau, HIGH);
digitalWrite(led_kuning, HIGH);
digitalWrite(led_biru, HIGH);
digitalWrite(led_ungu, HIGH);

  nilaidata = 0;
  delay(500);
}
}