2008-05-19 04:17:38     Printing under uClinux by Qt: how?

2008-05-19 04:17:38     Printing under uClinux by Qt: how?

Konstantin Utkin (RUSSIAN FEDERATION)

Message: 56002   

On my embedded system I have USB printer, and I can print out *.txt files by "cat ./file > /dev/lp0" command. So that part works successfully.

But under Qt (embedded 3.3.8) there is some strange problems: all of Qt applications (from "examples" folder) lead system to fail with "Instruction fetch misaligned address violation" after clicking "OK" in Setup Printer Dialog. (to be correct, fails on ::close(1) function in "closeAllOpenFds", file qprinter_unix.cpp). Looks like it is not a bug in application or Qt library.

Looks like some kind of "printer registration" needed. But what actually? I use only "evironment variable", like "export PRINTER="/dev/lp0" - maybe there any other commands needed?

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2008-05-20 05:38:22     Re: Printing under uClinux by Qt: how?

Yi Li (CHINA)

Message: 56045   

To debug exceptions, please refer to: http://docs.blackfin.uclinux.org/doku.php?id=debuging_applications&s[]=exception#analyzing_traces.