Paolo Mantegazza wrote:
> wolfgang guldner wrote:
> >
> > Hello everyone,
> >
> > I implemented a data acquisition (rtai) kernel module which
> > is very similar to the RTAI code example
> >
> > "How can I perform a real-time data-acquisition?"/
> > "How can I communicate with the realtime layer?"
> >
> > under
> >
> > URL: http://www.aero.polimi.it/projects/rtai/guide.htm
> >
> > My problem:
> >
> > After several (>10000) sampling processes the module crashes
> > (sometimes totally, sometimes remote login can be used to reboot
> > the system).
> >
> > So my questions:
> >
> > Did anyone realize a data acquisition kernel module based on the
> > code of the RTAI code sample?
> >
> > Which modifications had to be done to get it running stable?
> >
> > Which RTAI version/ Linux Kernel version should be used?
> >
> > Thanks in advance
>
> What are:
>
> - task frequency frequency and conversion time;
task frequency = 100 to 650 Hz
conversion time : the measurement data is received from serial port (
via rt_com)
duration: 0.521ms (6bytes at 115kbaud) and is directly written to a
rt-FIFO. The data is
not converted.
>
> - number of conversions per sample;
non
>
> - the calculation load and the CPU you are using.
CPU: Pentium II 400Mhz
I hope this information is enough
Thank you very much
uwe speck / wolfgang guldner
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