//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;
  }
}