Qextserialport comm. error

simonCpp

Hey,
I'm using Qextserialport 1.2 alpha in my project.
I got invalid data when I use other windows application while I'm recording the data at hight rate of 400hz.
BUT, when I first open the port via HyperTerminal or LabView and then I connect throw my SW, the problem is vanished.

The problem doesn happend in low rate (1h,10h)

Any Idea?!?

This is how I install the port
@
port = new QextSerialPort(portName,QextSerialPort::EventDriven);

if(!port->open(QIODevice::ReadOnly )) {
    qDebug("Cannot open serial port: %s Error: %s",
           portName.toAscii().constData(),
           port->errorString().toAscii().constData());
    return -1;
}
connect( port, SIGNAL(readyRead()), this, SLOT(onReadyRead()));
port->setBaudRate(BAUD921600);
port->setDataBits(DATA_8);
port->setParity(PAR_NONE);
port->setStopBits(STOP_2); 
port->setFlowControl (FLOW_OFF);
port->setRts( true );
port->setDtr( true );

@

My setup:
Win XP sp3
QT 4.7.0

Thanx!

kuzulis

Try "QtSerialPort":http://qt-project.org/wiki/QtSerialPort

koahnig

Are you using alpha or alpha2?
The version alpha is according to "the download page":http://code.google.com/p/qextserialport/downloads/list?can=1&q=&colspec=Filename+Summary+Uploaded+Size+DownloadCount deprecated. And it is from 2007. Furthermore, mid of year beta2 was released. You might want to change to this.

simonCpp

I'm using the alpha version, I will try it with the 1.2beat2 version thanks!

simonCpp

Got the same error with 1.2beata2

kuzulis

Try another library QtSerialPort

simonCpp

I have truble to download it..
How can I download it withot the gitorious?
Do you have other link?

Thanks

kuzulis

bq. I have truble to download it..
How can I download it withot the gitorious?
Do you have other link?

In "Wiki":http://qt-project.org/wiki/QtSerialPort is an exhaustive. Please read it carefully.