import com.pi4j.io.gpio.GpioController;
import com.pi4j.io.gpio.GpioFactory;
import com.pi4j.io.gpio.GpioPinDigitalInput;
import com.pi4j.io.gpio.GpioPinDigitalOutput;
import com.pi4j.io.gpio.PinState;
import com.pi4j.io.gpio.PinPullResistance;
import com.pi4j.io.gpio.RaspiPin;
import com.pi4j.io.gpio.event.GpioPinDigitalStateChangeEvent;
import com.pi4j.io.gpio.event.GpioPinListenerDigital;

public class ButtonLed {
	
	public static void main(String[] args) throws InterruptedException {
		
		final GpioController gpioCtrl = GpioFactory.getInstance();
		
		final GpioPinDigitalInput button = gpioCtrl.provisionDigitalInputPin(RaspiPin.GPIO_00, PinPullResistance.PULL_UP);
		final GpioPinDigitalOutput pin = gpioCtrl.provisionDigitalOutputPin(RaspiPin.GPIO_01, "Red led", PinState.LOW);
		
		button.setShutdownOptions(true, PinState.LOW, PinPullResistance.OFF);
		pin.setShutdownOptions(true, PinState.LOW, PinPullResistance.OFF);
		
		button.addListener(new GpioPinListenerDigital() {
            @Override
            public void handleGpioPinDigitalStateChangeEvent(GpioPinDigitalStateChangeEvent event) {
				if (event.getState() == PinState.LOW) {
					System.out.println("Bouton enfoncé");
					pin.high();
				} else if (event.getState() == PinState.HIGH) {
					System.out.println("Bouton relaché");
					pin.low();
				}
            }
            
        });
        
        while (true) {
            Thread.sleep(500);
        }
		
		//gpioCtrl.shutdown();
		
	}
	
}