> > I have been busy with other things for a few months. I started on an 
> > implementation in Ada but found raspi-profibus 
> > http://bues.ch/cms/hacking/profibus.html and think about using this instead.
> > 
> > The first question is if it is possible to use python in a HAL module? Or 
> > if there may be any real time issues with this?
> > 
> 
> The current RTAI base implementation of HAL runs real-time HAL components
> as loadable kernel modules.  Python (or any other interpreted language) simply
> does not work at all in that environment.
> 
> Non-realtime modules are normal Linux processes.  I believe that there is a 
> library
> to allow Python to interact with HAL in that environment.

Then I consider python as a dead end which never could be perfect for Profibus 
and continue with my Ada code.

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