Unable to open GPIO direction interface for pin

[andi-riese]

I try to run the following code:

package test;

import com.pi4j.io.gpio.GpioController;
import com.pi4j.io.gpio.GpioFactory;
import com.pi4j.io.gpio.GpioPinDigitalInput;
import com.pi4j.io.gpio.PinPullResistance;
import com.pi4j.io.gpio.RaspiPin;

import basic.L;

public class Test {

public static void main(final String[] args) {
	final GpioController gpio = GpioFactory.getInstance();

// L.t("", (Object[]) RaspiPinNumberingScheme.values());
// GpioFactory.setDefaultProvider(new RaspiGpioProvider(RaspiPinNumberingScheme.DEFAULT_PIN_NUMBERING));
GpioPinDigitalInput myButton = gpio.provisionDigitalInputPin(RaspiPin.GPIO_29, // PIN NUMBER
"MyButton", // PIN FRIENDLY NAME (optional)
PinPullResistance.PULL_DOWN);
L.t("Ende 1");
gpio.shutdown();
L.t("Ende 2");
}

}

Since I have added pi4j-core-jar as an external jar to the Build-Path the program compiles without errors.
When I try to run it, I get the exception:
`Exception in thread "main" java.lang.RuntimeException: Unable to open GPIO direction interface for pin [29]: Datei oder Verzeichnis nicht gefunden

	at com.pi4j.wiringpi.GpioUtil.export(Native Method)
	at com.pi4j.io.gpio.WiringPiGpioProviderBase.export(WiringPiGpioProviderBase.java:106)
	at com.pi4j.io.gpio.impl.GpioPinImpl.export(GpioPinImpl.java:156)
	at com.pi4j.io.gpio.impl.GpioControllerImpl.provisionPin(GpioControllerImpl.java:567)
	at com.pi4j.io.gpio.impl.GpioControllerImpl.provisionPin(GpioControllerImpl.java:538)
	at com.pi4j.io.gpio.impl.GpioControllerImpl.provisionDigitalInputPin(GpioControllerImpl.java:642)
	at com.pi4j.io.gpio.impl.GpioControllerImpl.provisionDigitalInputPin(GpioControllerImpl.java:670)
	at com.pi4j.io.gpio.impl.GpioControllerImpl.provisionDigitalInputPin(GpioControllerImpl.java:682)
	at test.Test.main(Test.java:18)`

Datei oder Verzeichnis nicht gefunden = File or directory not found.

Can anyone help me? I have no idea what to do now.

[taartspi]

Haven't used v1 code in a long time to suggest a full fix. Looking at your code it is not one of the V1 examples i could find. I think to simplify your debug look at the V1 web pages https://www.pi4j.com/1.4/usage.html and test the example line for line and see if successful.

Also seeing wiringpi and that V1 use, unless you are editing in a large set of V1 code and migration is not practical, if the target machine is one of the raspberry Pi I would recommend using Pi4j_V2 for new work.