import com.fasterxml.jackson.databind.SerialPort; public class SerialExample { public static void main(String[] args) { SerialPort serialPort = new SerialPort("/dev/ttyUSB0"); serialPort.openPort(); serialPort.setParams(9600, 8, 1, 0); byte[] writeBuffer = "Hello, Serial!".getBytes(); serialPort.writeBytes(writeBuffer); serialPort.closePort(); } }