29 апр 2007 09:50 | |
Сообщения:7
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У меня такая проблема! При записи информации в OutputStream байты 0x0A заменяются на два байта 0x0d 0x0a! как сделать так чтобы так не делалось?
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29 апр 2007 14:25 | |
Сообщения:3874
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Хм ... дайте пример записи. Очень странное поведение.
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30 апр 2007 13:15 | |
Сообщения:53
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Проверь, правильно ли ты делаешь инициализацию порта.
((SerialPort)port).setSerialPortParams(9600, SerialPort.DATABITS_8, SerialPort.STOPBITS_1, SerialPort.PARITY_EVEN); ((SerialPort)port).setFlowControlMode(SerialPort.FLOWCONTROL_NONE); Очень важно, что бы эти настройки совпадали с настройками устройства на другом конце. |
02 мая 2007 07:33 | |
Сообщения:7
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Вот код! Параметры порта совпадают! Не знаю играет ли это роль пишу под ASP Linux.
Это стандартный пример SerialDemo только добавил функцию Write(short[], int) там как видите я сначала вывел массив потом положил в поток! Ловлю эту инфу на другой стороне а там происходят уже эти подмены! ХЗ в чем дело! import javax.comm.*; import java.io.*; import java.awt.TextArea; import java.awt.event.*; import java.util.TooManyListenersException; /** * A class that handles the details of a serial connection. Reads from one * TextArea and writes to a second TextArea. * Holds the state of the connection. */ public class SerialConnection implements SerialPortEventListener, CommPortOwnershipListener { private SerialDemo parent; private SerialParameters parameters; private OutputStream os; private InputStream is; private StringBuffer inputBuffer; private CommPortIdentifier portId; private SerialPort sPort; private boolean open; private int nNeedToRead; JPUMAL1 m_L1; /** * Creates a SerialConnection object and initilizes variables passed in * as params. * @param parent A SerialDemo object. * @param parameters A SerialParameters object. * @param messageAreaOut The TextArea that messages that are to be sent out * of the serial port are entered into. * @param messageAreaIn The TextArea that messages comming into the serial * port are displayed on. */ public SerialConnection(SerialDemo parent, SerialParameters parameters) { inputBuffer = new StringBuffer(); this.parent = parent; this.parameters = parameters; open = false; } /** * Attempts to open a serial connection and streams using the parameters * in the SerialParameters object. If it is unsuccesfull at any step it * returns the port to a closed state, throws a * <code>SerialConnectionException</code>, and returns. * Gives a timeout of 30 seconds on the portOpen to allow other applications * to reliquish the port if have it open and no longer need it. */ public void openConnection() throws SerialConnectionException { // Obtain a CommPortIdentifier object for the port you want to open. try { portId = CommPortIdentifier.getPortIdentifier(parameters.getPortName()); } catch (NoSuchPortException e) { throw new SerialConnectionException(e.getMessage()); } // Open the port represented by the CommPortIdentifier object. Give // the open call a relatively long timeout of 30 seconds to allow // a different application to reliquish the port if the user // wants to. try { sPort = (SerialPort) portId.open("SerialDemo", 30000); } catch (PortInUseException e) { throw new SerialConnectionException(e.getMessage()); } // Set the parameters of the connection. If they won't set, close the // port before throwing an exception. try { setConnectionParameters(); } catch (SerialConnectionException e) { sPort.close(); throw e; } // Open the input and output streams for the connection. If they won't // open, close the port before throwing an exception. try { os = sPort.getOutputStream(); is = sPort.getInputStream(); } catch (IOException e) { sPort.close(); throw new SerialConnectionException("Error opening i/o streams"); } // Add this object as an event listener for the serial port. try { sPort.addEventListener(this); } catch (TooManyListenersException e) { sPort.close(); throw new SerialConnectionException("too many listeners added"); } // Set notifyOnDataAvailable to true to allow event driven input. sPort.notifyOnDataAvailable(true); // Set notifyOnBreakInterrup to allow event driven break handling. sPort.notifyOnBreakInterrupt(true); // Set receive timeout to allow breaking out of polling loop during // input handling. try { sPort.enableReceiveTimeout(30); } catch (UnsupportedCommOperationException e) {} // Add ownership listener to allow ownership event handling. portId.addPortOwnershipListener(this); open = true; } /** * Sets the connection parameters to the setting in the parameters object. * If set fails return the parameters object to origional settings and * throw exception. */ public void setConnectionParameters() throws SerialConnectionException { // Save state of parameters before trying a set. int oldBaudRate = sPort.getBaudRate(); int oldDatabits = sPort.getDataBits(); int oldStopbits = sPort.getStopBits(); int oldParity = sPort.getParity(); int oldFlowControl = sPort.getFlowControlMode(); // Set connection parameters, if set fails return parameters object // to original state. try { sPort.setSerialPortParams(152000, parameters.getDatabits(), parameters.getStopbits(), parameters.getParity()); } catch (UnsupportedCommOperationException e) {} try { sPort.setSerialPortParams(parameters.getBaudRate(), parameters.getDatabits(), parameters.getStopbits(), parameters.getParity()); } catch (UnsupportedCommOperationException e) { parameters.setBaudRate(oldBaudRate); parameters.setDatabits(oldDatabits); parameters.setStopbits(oldStopbits); parameters.setParity(oldParity); throw new SerialConnectionException("Unsupported parameter"); } // Set flow control. try { sPort.setFlowControlMode(parameters.getFlowControlIn() | parameters.getFlowControlOut()); } catch (UnsupportedCommOperationException e) { throw new SerialConnectionException("Unsupported flow control"); } } /** * Close the port and clean up associated elements. */ public void closeConnection() { // If port is alread closed just return. if (!open) { return; } // Check to make sure sPort has reference to avoid a NPE. if (sPort != null) { try { // close the i/o streams. os.close(); is.close(); } catch (IOException e) { System.err.println(e); } // Close the port. sPort.close(); // Remove the ownership listener. portId.removePortOwnershipListener(this); } open = false; } /** * Send a one second break signal. */ /*public void sendBreak() { //sPort.sendBreak(1000); }*/ /* * Send set of bytes to the port */ public int Write(short[] pbtInfo, int nCount) { try { byte[] pbt = new byte[nCount]; for(int i = 0; i < nCount; i++) pbt[i] = (byte)pbtInfo[i]; System.out.print("Serial connection - write - "); for(int i = 2; i < nCount - 1; i++) System.out.printf("%02x.",pbtInfo[i]); System.out.println(""); FilterOutputStream fs = new FilterOutputStream( os ); fs.write(pbt, 0, nCount); } catch (IOException e) { System.err.println(e); } return nCount; } /* * Getting bytes from port */ public int Read(int nCount, short[] pbtBuff) { byte []bdst = new byte[nCount]; int nRes = 0; try { if( is.available() >= nCount ) { nRes = is.read(bdst, 0, nCount); if( nRes > 0 ) { for( int i = 0; i < nCount; i++) { pbtBuff[i] = (short)(bdst[i] & 0xFF); } } } } catch(IOException e) {} return nRes; } /** * Reports the open status of the port. * @return true if port is open, false if port is closed. */ public boolean isOpen() { return open; } /** * Handles SerialPortEvents. The two types of SerialPortEvents that this * program is registered to listen for are DATA_AVAILABLE and BI. During * DATA_AVAILABLE the port buffer is read until it is drained, when no more * data is availble and 30ms has passed the method returns. When a BI * event occurs the words BREAK RECEIVED are written to the messageAreaIn. */ public void serialEvent(SerialPortEvent e) { int newData = 0; // Determine type of event. switch (e.getEventType()) { // Read data until -1 is returned. If \r is received substitute // \n for correct newline handling. case SerialPortEvent.DATA_AVAILABLE: //if(m_L1 != null) // m_L1.m_pRead.SetEvent(); break; // If break event append BREAK RECEIVED message. case SerialPortEvent.BI: break; } } /** * Handles ownership events. If a PORT_OWNERSHIP_REQUESTED event is * received a dialog box is created asking the user if they are * willing to give up the port. No action is taken on other types * of ownership events. */ public void ownershipChange(int type) { if (type == CommPortOwnershipListener.PORT_OWNERSHIP_REQUESTED) { PortRequestedDialog prd = new PortRequestedDialog(parent); } } } |