//YWROBOT
//Compatible with the Arduino IDE 1.0
//Library version:1.1
#include <LiquidCrystal_I2C.h>

LiquidCrystal_I2C lcd(0x27,20,4);  // set the LCD address to 0x27 for a 16 chars and 2 line display

volatile unsigned long counter = 0; 
byte pin_trigger = 2;
unsigned int loading = 0;

void tambahVariabel(){
  counter += 1;
}

void setup()
{
  lcd.init();                      // initialize the lcd
  // Print a message to the LCD.
  lcd.backlight();

  //setting pin interrup
  pinMode(pin_trigger, INPUT_PULLUP);
  attachInterrupt(digitalPinToInterrupt(pin_trigger), tambahVariabel, LOW);
}


void loop()
{
  if(loading < 20000)
  {
    for(int i = 0;i < 20000;i++)
    {
      loading += 1;

      lcd.setCursor(0,1); //kolom, baris
      lcd.print("Loading: ");
      lcd.setCursor(10,1);
      lcd.print(loading);

      lcd.setCursor(0,2); //kolom, baris
      lcd.print("Counter: ");
      lcd.setCursor(10,2);
      lcd.print(counter);
    }
  }

  //program lain
}