#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27,16,2);
#define led1 2
#define led2 4
#define tombol1 27
#define tombol2 26

void setup() {
  lcd.init(); lcd.backlight();
  lcd.setCursor(3,0); lcd.print("Hello, world!");
  pinMode(led1,OUTPUT);
  pinMode(led2,OUTPUT);
  pinMode(tombol1,INPUT_PULLUP);
  pinMode(tombol2,INPUT_PULLUP);
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
}

void loop() {
  delay(10); // this speeds up the simulation
  if(digitalRead(tombol1)==0) {
    lcd.setCursor(0,0); lcd.print("TOMBOL 1 DITEKAN");
    for(int i=1;i<=10;i++) {
      lcd.setCursor(0,1); lcd.print("Nilai i = ");
      lcd.print(i);
      Serial.print("Nilai i=");
      Serial.println(i);
      digitalWrite(led1,1); lcd.backlight(); delay(300);
      digitalWrite(led1,0); lcd.noBacklight(); delay(300);
    }
  }
  if(digitalRead(tombol2)==0) {
    digitalWrite(led1,0);
    digitalWrite(led2,0);
  }
}