//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

unsigned long waktuSebelumnya_lampu1 = 0;
bool lampu1Status = false;
unsigned long intervalLampu1 = 6000;
int lampu1 = 2;

unsigned long waktuSebelumnya_lampu2 = 0;
bool lampu2Status = false;
unsigned long intervalLampu2 = 10000;
int lampu2 = 3;

void setup()
{
  lcd.init();                      // initialize the lcd
  // // Print a message to the LCD.
  pinMode(lampu1, OUTPUT);
  pinMode(lampu2, OUTPUT);
  // lcd.backlight();
  // lcd.setCursor(3,0);
  // lcd.print("Hello, world!");
  // lcd.setCursor(2,1);
  // lcd.print("Ywrobot Arduino!");
  //  lcd.setCursor(0,2);
  // lcd.print("Arduino LCM IIC 2004");
  //  lcd.setCursor(2,3);
  // lcd.print("Power By Ec-yuan!");
}


void loop()
{
  unsigned long waktuSekarang = millis();
  lcd.setCursor(0,0);
  lcd.print("Time : ");
  lcd.print(waktuSekarang / 1000);

  // lampu1
  lcd.setCursor(0,2);
  lcd.print("Lampu 1 : ");
  if(waktuSekarang - waktuSebelumnya_lampu1 > intervalLampu1){
    //menyalakan LED pin 2 atau LED 1

    //flagging
    lampu1Status = !lampu1Status;

    if(lampu1Status){
      
      lcd.setCursor(10,2);
      
      lcd.print("ON ");
      digitalWrite(lampu1, HIGH);
    }else{

      lcd.setCursor(10,2);
      
      lcd.print("OFF");
      digitalWrite(lampu1, LOW);
    }


    waktuSebelumnya_lampu1 = waktuSekarang;
  }

  // lampu2
  lcd.setCursor(0,3);
  lcd.print("Lampu 2 : ");
  if(waktuSekarang - waktuSebelumnya_lampu2 > intervalLampu2){
    //menyalakan LED pin 2 atau LED 1

    //flagging
    lampu2Status = !lampu2Status;
    
    if(lampu2Status){
      
      lcd.setCursor(10,3);
      
      lcd.print("ON ");
      digitalWrite(lampu2, HIGH);
    }else{

      lcd.setCursor(10,3);
      lcd.print("OFF");
      digitalWrite(lampu2, LOW);
    }


    waktuSebelumnya_lampu2 = waktuSekarang;
  }


}