readme.md

rpi-ws281x-jni

This is a simple JNI library wrapper over jgarff/rpi_ws281x C library.

• clone, compile & install jgarff/rpi_ws281x

git clone git@github.com:jgarff/rpi_ws281x.git
cd rpi_ws281x
gcc -Wall -shared -o libws2811.so -fPIC dma.c pwm.c ws2811.c
cp libws2811.so /usr/lib
ldconfig
mkdir /usr/include/ws2811
cp *.h /usr/include/ws2811

• clone & package

git clone git@github.com:mathieubergeron/rpi-ws281x-jni.git
cd rpi-ws281x-jni
mvn package

• import & use ws2811-jni-VERSION.jar in your project

public static void main(String[] args) throws Exception {
    final Ws2811 ws2811 = new NativeWs2811(LED_COUNT);

    Runtime.getRuntime().addShutdownHook(new Thread() {
        @Override
        public void run() {
            ws2811.shutdown();
        }
    });

    while (true) {
        ws2811.render(produceYourNextFrame());
    }
}