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jpochin48 avatar jpochin48 commented on July 19, 2024

Code is:

package piclient;

import java.io.IOException;
import com.pi4j.io.gpio.GpioController;
import com.pi4j.io.gpio.GpioFactory;
import com.pi4j.wiringpi.Spi;

public class TmpPiClient implements Runnable {

static TmpPiClient piClient;
static GpioController gpio = GpioFactory.getInstance();
static Thread thread;


public static void main(String[] args) throws IOException {
    piClient = new TmpPiClient();
}

public TmpPiClient() {
    thread = new Thread(this);
    thread.start();
}

@Override
public void run() {
    if (Spi.wiringPiSPISetup(0, 100000) == -1) {
        System.err.println("Unable to set up SPI channel 0");
        return;
    }

    byte data[][] = new byte[][] {
            {0x00,0x00,0x00,0x00,0x00},
            {(byte) 0xff,(byte) 0xff,(byte) 0xff,(byte) 0xff,(byte) 0xff}
    };

    while(true) {
        for(int iFrame=0; iFrame<data.length; iFrame++) {
            Spi.wiringPiSPIDataRW(0, data[iFrame], 5);

            try {
                Thread.sleep(2000);
            } catch (InterruptedException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
    }
}

}

from pi4j-v1.

jpochin48 avatar jpochin48 commented on July 19, 2024

Upgrading to latest kernel and JDK 8 seems to have fixed this.

from pi4j-v1.

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