OS:Ubuntu 11
QExtSerialport 1.2 beta


I am creating an application to write an instruction to a device and receive its response from the device. I connected the readyread() singal to onReadyRead() slot. but sometime its getting only the partial data from the device to the onReadyRead() slot.

I am writing *Read to device
and getting
*Read<Values>
P=122
C=0.33
sometime I got only the partial result in my onReadyRead()

I tried event driven and Polling methods.Still the issue exist.How I can completely read the device input in my onReadyRead().
I checked this on putty software also. its working perfectly in there.

my code sample is given below

Qt Code: 
  1. void Reader::Create()
  2. {
  3.     PortSettings settings = {BAUD19200, DATA_8, PAR_NONE, STOP_1, FLOW_OFF, 20};
  4.     port = new QextSerialPort(m_strPortName, settings, QextSerialPort::EventDriven);
  5.  
  6.     timer = new QTimer(this);
  7.     timer->setInterval(20);
  8.  
  9.  
  10.  
  11.      connect(timer, SIGNAL(timeout()), SLOT(onReadyRead()));
  12.      connect(port, SIGNAL(readyRead()), SLOT(onReadyRead()));
  13.  
  14.     if (!port->isOpen())
  15.     {
  16.        port->setPortName(m_strPortName);
  17.         port->open(QIODevice::ReadWrite);
  18.     }
  19.     else {
  20.      //   port->close();
  21.     }
  22.  
  23. if (port->isOpen() && port->queryMode() == QextSerialPort::Polling)
  24.        timer->start();
  25.     else
  26.         timer->stop();
  27.  
  28. }
  29.  
  30. void Reader::onReadyRead()
  31. {
  32.     if (port->bytesAvailable())
  33.     {
  34.        m_strData= port->readAll();
  35.     }
  36. }
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