Ciao watermark, grazie per l'info !!!
Utilizzo pure quella libreria, la RxTx.
Ho provato di nuovo a smanettare il codice, non vuole saperne proprio nulla di leggere il peso con Jbutton. La cosa strana è che con la JTextArea funziona correttamente.
Ve lo posto, magari riuscite ad individuare il problema anche perchè non vorrei iniziare tutto daccapo visto che per far funzionare questo ho dovuto "sbattere" la testa ovunque.
Se è proprio necessario tenterò la strada di utilizzare due thread appositi, per la lettura e scrittura.
codice:import javax.swing.*; import gnu.io.*; import java.io.*; import java.util.*; @SuppressWarnings("serial") public class MainProva extends JFrame implements SerialPortEventListener { /*** My Variables ***********************************************************/ GUIProva gui; //class defining the graphical user interface SerialPort serialPort; InputStream inputStream; OutputStream outputStream; CommPortIdentifier portIdentifier; boolean debug; //true to print exception reports, false for release static String[] portNames; static boolean portOpen; static int baud,databits,parity,stopbits; /*** Constructor ************************************************************/ public MainProva() { debug = false; //Activates exception reports used for debugging portOpen = false; //flags whether a port is currently open portNames = new String[10]; //ports found on this computer, 10 maximum baud = 9600; //default baud setting databits = 8; //default databits setting parity = 0; //default parity setting stopbits = 1; //default stopbits setting findPorts(); //this method populates the string[] portNames } /*** main method ************************************************************/ public static void main(String[] args) { SwingUtilities.invokeLater(new Runnable() { public void run() { MainProva main=new MainProva(); main.init(); } }); } /*** called by main() *******************************************************/ private void init() { gui=new GUIProva(this); gui.setVisible(true); initwritetoport(); } private void findPorts() { Enumeration<CommPortIdentifier> portEnum = CommPortIdentifier.getPortIdentifiers(); int portCount = 0; while ( portEnum.hasMoreElements() ) { portIdentifier = portEnum.nextElement(); // populate the portNames array for display in gui.jcbPort //if the port is a serial port if(portCount < portNames.length && portIdentifier.getPortType() == portIdentifier.PORT_SERIAL) { //put it in the array portNames[portCount] = portIdentifier.getName(); portCount++; } } } public void RS232Setup(String portName) { Enumeration<CommPortIdentifier> portEnum = CommPortIdentifier.getPortIdentifiers(); if(portOpen) { //close any currently open port try { inputStream.close(); } catch(IOException e) {exceptionReport(e);} serialPort.notifyOnDataAvailable(false); serialPort.close(); serialPort.removeEventListener(); } portOpen = false; //clear the portOpen flag while ( portEnum.hasMoreElements() ) { portIdentifier = portEnum.nextElement(); if(portIdentifier.getName().equals(portName) && portIdentifier.getPortType() == portIdentifier.PORT_SERIAL) { gui.setjlStatus(portName + " found."); try { //try to open the port serialPort = (SerialPort)portIdentifier.open("CommUtil", 2000); portOpen = true; //if successful, update the portOpen flag break; } catch (PortInUseException e) { gui.setjlStatus("Port " + portIdentifier.getName() + " is in use."); } catch (Exception e) { gui.setjlStatus("Failed to open port " + portIdentifier.getName()); } } } //end of while loop //if we succeeded in opening the port, set it up for operation if(portOpen) { try { inputStream = serialPort.getInputStream(); } catch (IOException e) {exceptionReport(e);} try { serialPort.addEventListener(this); } catch (TooManyListenersException e) {exceptionReport(e);} // activate the DATA_AVAILABLE notifier serialPort.notifyOnDataAvailable(true); try { //set the port parameters serialPort.setSerialPortParams(baud, databits, stopbits, parity); //update to gui to display current status gui.setjlStatus(portName, serialPort.getBaudRate(), serialPort.getParity(), serialPort.getDataBits(), serialPort.getStopBits(), portOpen); //update the gui open/close port button gui.setjbOpenClose(portOpen); } catch (UnsupportedCommOperationException e) {exceptionReport(e);} initwritetoport(); } } //end of RS232Setup() method 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[64]; try { // read data int numBytes = inputStream.read(readBuffer); inputStream.close(); //send the received data to the GUI String result = new String(readBuffer,0,numBytes); gui.setjtaReceived(result); System.out.println(result); } catch (IOException e) {exceptionReport(e);} break; } } //end of serialEvent() method public void initwritetoport() { if(portOpen) { try { // get the outputstream outputStream = serialPort.getOutputStream(); } catch (IOException e) {exceptionReport(e);} try { // activate the OUTPUT_BUFFER_EMPTY notifier serialPort.notifyOnOutputEmpty(true); } catch (Exception e) { exceptionReport(e); System.exit(-1); } } } //end of initwritetoport() method public void writetoport(String outString) { try { if(portOpen) outputStream.write(outString.getBytes()); System.out.println(outString.getBytes()); } catch (IOException e) {exceptionReport(e);} } public void exceptionReport(Exception e) { if(debug) { System.out.println(e.toString()); e.printStackTrace(); } } }
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