> Could you or your friend tell me what "RTAI support
> for Matlab" means?
>
> I'm currently a RTLinux and MATLAB user, so am
> interested!
I'm not 100% sure about this. So anyone that knows
more can correct me.
One of the nice features about Matlab and Simulink is
the Real Time workshop. You create complex control
algorithms with Simulink and then matlab automatically
writes a C version of the algorithm that can be run in
real-time. I used to use this with DSP boards
supported by Mathworks (DSPace).
Pros: it was great, just thinking about the strict
control side of things and getting nice graphical
results scoping for what was happening in the system.
Cons: the boards were hell of expensive.
I think it used to be DSP since windows is hardly real
time and thus all the real time stuff would be done in
parallel to the OS.
After that I think Matlab has developed the RT
workshop for more boards and claimed it would work in
RT under windows. Haven't tried any, but would tend to
believe them.
Problems: few boards are supported. Not in an absolute
sense (they are actually lots) but more in relative
one (not the ones I was using). Plus if you ever have
to tweak something yourself... well it's windows and I
just get scared about twaeking in windows...
Wouldn't it be cool to get the RT Workshop, tweak
around the code and get something that converts
automatically Simulink blocks to Real Time modules for
RTL? I guess so... And if you look back in the mailing
list I think more people had talked about this and
were working on it. I haven't seen any news on that
thread since summer 2000 though.
Now apparently this has been done for RTAI. Both for
user space (but I guess the RT one RTAI has, correct
me if I'm wrong) and for kernel space, by two
different groups. I think it works...
So basically you can use RT workshop of matlab to
convert Simulink algorithms to RTAI code... have to
check what boards are supported and if yours is one of
them. But I think writing the drivers, in case it's
not supported, might be slightly less insane then
attempting to do the same for windows.
My friend has tested Matlab and the RT workshop with
RTAI and said it compiled and loaded fine. Too bad he
doesn't have a board to test the whole thing one yet.
But we're getting there.
So here's the scoop. I think it would be nice to be
able to use Matlab. I know there are lots of tools out
there and maybe Matlab is hated because it's not open
source. But it's such a standard for a control
Engineer like myself, it's just a nice feature to be
able to use at low cost (Matlab license and nothing
else).
Hopefully most of this is not deadly wrong data...
f
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