3rd Party Software

I don't know if you have the ability to add a message delimiter, I had to do that with my own protocol. Then all I did was loop:

@
readBytes = serialport->read(serialport->bytesAvailable());
@

and append readBytes to a QString until I reach my message delimiter. At the moment, I'm testing my code with a virtual serial port connecting 2 x VirtualBox's using the following for these serial port settings:

@
serialPort = new QextSerialPort(serialDevice, QextSerialPort::EventDriven);
serialPort->setBaudRate(BAUD115200);
serialPort->setFlowControl(FLOW_OFF);
serialPort->setParity(PAR_NONE);
serialPort->setDataBits(DATA_8);
serialPort->setStopBits(STOP_2);
@

It is already set to debug, I am stuck bigtime :(

And if you're using OS Windows and QtSDK, then you have an build error qwineventnotifier_p.h.

The solution below:
[quote]
It private file is located in the source code Qt4:
qt-everywhere-opensource-src-4.7.4/src/corelib/kernel/qwineventnotifier_p.h

But since is a private class, then it does not include in the Qt SDK.

Therefore, in two ways:

Or build Qt4 from source and use. Or take this header file from the Qt4 source and copy it to the Qt SDK, example to:
C/QtSDK/Desktop/Qt/4.7.4/msvc2008/include/QtCore/private/qwineventnotifier_p.h
[/quote]

Where instead 4.7.4. may be your current version (eg 4.8.0),
and instead msvc2008 may be mingw.

Try using QSerialDevice 2.0.
Read this "thread":http://developer.qt.nokia.com/forums/viewthread/11634/#67246

Sounds like a problem in Qwt to me, to be honest. I think what you were doing in the constructor should work. The only thing I can think about, is that perhaps (speculation) Qwt does not accept setting up axis before you actually told it about the kind of data is need to plot (and what axis there are in that)?

Thanks for the help, I have started off finally...

Yes this looks like my old function.
Thank you

Yes, the Qt libs are precompiled. To use boost together with those you will have to compile it with the same settings. It will not help to change 10.5 to 10.7 in the mkspecs, as Qt is still built with the old settings!

You have two options here:

build boost with the same settings as Qt build Qt manually with the same settings as you build boost

I personally would go with the first option and rebuild Qt.

Good question. I guess this is tricky to do with the standard Qt slider widget. What you might considder (if possible for you), is to use Qwt instead. It provides more options for its slider widget, including having custom scales. It even supports logartitmic scales.

anyway.. thank you.. i already found it...

Yes. Typically add the user you run your application as to the uucp group or maybe enable filesystem ACLs and set a suitable ACL on your serial device.

well, it seems that Qwt have a good starting point, they have a progress bar with levels, i can subclass and get it done, thanks!

Welcome to the forum
There was a similar post the other day "here":http://developer.qt.nokia.com/forums/viewthread/10677

You need using "QWT":http://qwt.sourceforge.net/

"Follow this link":http://developer.qt.nokia.com/faq/answer/do_you_provide_a_tool_for_creating_graphs

Also if you click the qwt tag on the right you will find more usefull info.

On the qwt website there is an example using logaritmic scale if I remember well.

You are, unfortunately, very right. This library of mine is still very static and the redesign is slow-going (work responsibilities are picking up towards the end of the year). With regards to interaction, have a look at the Qt Chart example if you haven't done so yet:

http://doc.qt.nokia.com/stable/itemviews-chart.html

Enjoy and good luck!

Ok
I started a new topic about this problem.
http://developer.qt.nokia.com/forums/viewthread/10343/

One other thing, no spaces in any of the directory names. This can cause weird issues as well.