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| import gnu.io.CommPort;
import gnu.io.CommPortIdentifier;
import gnu.io.SerialPort;
import java.io.FileDescriptor;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
public class TwoWaySerialComm {
public TwoWaySerialComm() {
super();
}
void connect(String portName) throws Exception {
CommPortIdentifier portIdentifier = CommPortIdentifier.getPortIdentifier(portName);
if(portIdentifier.isCurrentlyOwned()) System.out.println("Error: Port is currently in use");
else {
CommPort commPort = portIdentifier.open(this.getClass().getName(), 2000);
if(commPort instanceof SerialPort) {
SerialPort serialPort = (SerialPort) commPort;
serialPort.setSerialPortParams(57600,SerialPort.DATABITS_8,SerialPort.STOPBITS_1,SerialPort.PARITY_NONE);
serialPort.notifyOnDataAvailable(true);
InputStream in = serialPort.getInputStream();
OutputStream out = serialPort.getOutputStream();
(new Thread(new SerialReader(in))).start();
(new Thread(new SerialWriter(out))).start();
}
else System.out.println("Error: Only serial ports are handled by this example.");
}
}
/** */
public static class SerialReader implements Runnable {
InputStream in;
public SerialReader(InputStream in) {
this.in = in;
}
public void run() {
byte[] buffer = new byte[1024];
int len = -1;
try {
while((len = this.in.read(buffer)) > -1) {
System.out.print(new String(buffer,0,len));
}
}
catch ( IOException e ) {
e.printStackTrace();
}
}
}
/** */
public static class SerialWriter implements Runnable {
OutputStream out;
public SerialWriter(OutputStream out) {
this.out = out;
}
public void run() {
try {
int c = 0;
while(( c = System.in.read()) > -1) {
this.out.write(c);
}
}
catch(IOException e) {
e.printStackTrace();
}
}
}
public static void main(String[] args) {
try {
(new TwoWaySerialComm()).connect("COM7");
}
catch(Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
} |
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