import lejos.nxt.*;

public class BWDetection {
			
	public static void main(String[] args) {
		
		BlackWhiteSensor bws = new BlackWhiteSensor(SensorPort.S2);		
			
		bws.calibrate();
			
		while (!Button.ESCAPE.isPressed())
		{   
			try
			{
		
				Thread.sleep(100);
				LCD.clear();
				LCD.drawString("Current: ",0,0);
				LCD.drawInt(bws.light(), 8, 0);
				
				if(bws.white() )
				{
					LCD.drawString("white", 0, 1);
				}
				else if(bws.black() )
				{
					LCD.drawString("Black: ", 0, 1);
					
				}
				else
				{				
					LCD.drawString("Undefined",0,1);
				}
				
			}	
			catch(Exception ex)
			{
				LCD.clear();
				LCD.drawString(ex.getMessage(),0,0);
			}
		}
		
	}	
	
}