Raspberry Pi e Java com Pi4j

 sudo dpkg -i pi4j-0.0.5.deb 

 GpioController gpio = GpioFactory.getInstance();</em> GpioPinDigitalOutput myLed = gpio.provisionDigitalOutputPin(RaspiPin.GPIO\_01, ”MyLed”, PinState.LOW);</em> myLed.blink(500); 

 GpioController gpio = GpioFactory.getInstance(); GpioPinDigitalInput myButton = gpio.provisionDigitalInputPin(RaspiPin.GPIO\_02); myButton.addListener(new GpioPinListenerDigital() { public void handleGpioPinDigitalStateChangeEvent(GpioPinDigitalStateChangeEvent event) {               if(event.getState().isHigh()){ System.out.println(“Pressionou”);               } else{                      System.out.println(“Parou de pressionar”);              }      } }); 

 javac -classpath .:classes:/opt/pi4j/lib/'\*' -d . PiscaPiscaDetectorDeBotao.java 

 sudo java -classpath .:classes:/opt/pi4j/lib/'\*' PiscaPiscaDetectorDeBotao 

 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.RaspiPin; import com.pi4j.io.gpio.event.GpioPinDigitalStateChangeEvent; import com.pi4j.io.gpio.event.GpioPinListenerDigital;
public class PiscaPiscaDetectorDeBotao { public static void main(String\[\] args) { GpioController gpio = GpioFactory.getInstance();             GpioPinDigitalOutput   gpio.provisionDigitalOutputPin(RaspiPin.GPIO\_04, , PinState.LOW);             myLed.blink();
             gpio.provisionDigitalInputPin(RaspiPin.GPIO\_02);             myButton.addListener( () {                      {                                (event.getState().isHigh()) {                                   System.out.println(); }  { System.out.println(); } }            });       } }