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POTesting Java Serial Port Program
 

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    <p>I have done the code to read byte streams from serial ports.The problem is I am unable to test the code as I dont have a device that interacts with these ports..</p> <p><strong>I have already used emulator</strong> but on running the code and the emulator <strong>nothing happens.There is no progress and no error.</strong></p> <p><strong>Here is the code</strong></p> <pre><code>class SimpleRead implements Runnable, SerialPortEventListener{ CommPortIdentifier portId; Enumeration portList; InputStream inputStream; SerialPort serialPort; Thread readThread; /** * Method declaration * * * @param args * * @see */ public void main(String[] args) { boolean portFound = false; String defaultPort = "/dev/term/a"; if (args.length &gt; 0) { defaultPort = args[0]; } portList = CommPortIdentifier.getPortIdentifiers(); while (portList.hasMoreElements()) { portId = (CommPortIdentifier) portList.nextElement(); if (portId.getPortType() == CommPortIdentifier.PORT_SERIAL) { if (portId.getName().equals(defaultPort)) { jTextArea1.setText("Found port: "+defaultPort); portFound = true; SimpleRead reader = new SimpleRead(); } } } if (!portFound) { jTextArea1.setText("port " + defaultPort + " not found."); } } /** * Constructor declaration * * * @see */ public SimpleRead() { try { serialPort = (SerialPort) portId.open("SimpleReadApp", 2000); } catch (PortInUseException e) {} try { inputStream = serialPort.getInputStream(); } catch (IOException e) {} try { serialPort.addEventListener(this); } catch (TooManyListenersException e) {} serialPort.notifyOnDataAvailable(true); try { serialPort.setSerialPortParams(9600, SerialPort.DATABITS_8, SerialPort.STOPBITS_1, SerialPort.PARITY_NONE); } catch (UnsupportedCommOperationException e) {} readThread = new Thread(this); readThread.start(); } /** * Method declaration * * * @see */ public void run() { try { Thread.sleep(20000); } catch (InterruptedException e) {} } /** * Method declaration * * * @param event * * @see */ public void serialEvent(SerialPortEvent event) { switch (event.getEventType()) { case SerialPortEvent.BI: case SerialPortEvent.OE: case SerialPortEvent.FE: case SerialPortEvent.PE: case SerialPortEvent.CD: case SerialPortEvent.CTS: case SerialPortEvent.DSR: case SerialPortEvent.RI: case SerialPortEvent.OUTPUT_BUFFER_EMPTY: break; case SerialPortEvent.DATA_AVAILABLE: byte[] readBuffer = new byte[20]; try { while (inputStream.available() &gt; 0) { int numBytes = inputStream.read(readBuffer); } jTextArea1.setText(new String(readBuffer)); } catch (IOException e) {} break; } } } </code></pre> <p><strong>Note:</strong> I am using javax.comm and Netbeans IDE. Thank You</p>
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    1. COUntil you have the actual device its unlikely we can help you. I have to downvote this for being unable to do the required research before asking this question.
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