import javax.comm.CommPortIdentifier;
import java.util.Enumeration;
public class SerialPortExample {
public static void main(String[] args) {
Enumeration portList = CommPortIdentifier.getPortIdentifiers();
while (portList.hasMoreElements()) {
CommPortIdentifier portId = (CommPortIdentifier) portList.nextElement();
System.out.println("--------------");
}
}
}
import javax.comm.SerialPort;
import javax.comm.CommPortIdentifier;
import java.io.InputStream;
import java.io.OutputStream;
public class SerialCommunicationExample {
public static void main(String[] args) {
String selectedPort = "COM1";
try {
CommPortIdentifier portId = CommPortIdentifier.getPortIdentifier(selectedPort);
SerialPort serialPort = (SerialPort) portId.open("SerialCommunicationExample", 2000);
serialPort.setSerialPortParams(9600, SerialPort.DATABITS_8, SerialPort.STOPBITS_1, SerialPort.PARITY_NONE);
InputStream inputStream = serialPort.getInputStream();
OutputStream outputStream = serialPort.getOutputStream();
serialPort.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
import javax.comm.SerialPort;
import javax.comm.CommPortIdentifier;
import java.io.InputStream;
public class SerialTimeoutExample {
public static void main(String[] args) {
String selectedPort = "COM1";
try {
CommPortIdentifier portId = CommPortIdentifier.getPortIdentifier(selectedPort);
SerialPort serialPort = (SerialPort) portId.open("SerialTimeoutExample", 2000);
serialPort.setSerialPortParams(9600, SerialPort.DATABITS_8, SerialPort.STOPBITS_1, SerialPort.PARITY_NONE);
InputStream inputStream = serialPort.getInputStream();
serialPort.enableReceiveTimeout(500);
byte[] buffer = new byte[1024];
int len = inputStream.read(buffer);
serialPort.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
