//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 byte counter = 0; // menyimpan nilai sementara
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 interrupt
  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
}