plexil-support

[plexil-support] plexil question

[<ku...@gm...>]

Hello,

I was wondering if there is a finite state machine package
available in PLEXIL. If not, how easy it is to create such
template? I am thinking of using PLEXIL to describe
high-level mission sequences (that involve multiple FSM)
and run them in the simulation environment that we have.

Also, is there any plan for a new software release?

I have not really used PLEXIL (only read the reference
manual), and appreciate your help.

thanks,
Yoshi

Re: [plexil-support] plexil question

[Chuck F. <Cha...@na...>]

Hello Yoshi.

We don't provide a finite state machine package for PLEXIL.  I'm not  
aware of any in our user base.  I would expect such a package to be  
straightforward to write.

We plan to release a new version of PLEXIL before the end of April.

Thanks for your interest!

  -- Chuck Fry

On Apr 14, 2009, at 6:08 PM, ku...@gm... wrote:

> Hello,
>
> I was wondering if there is a finite state machine package
> available in PLEXIL. If not, how easy it is to create such
> template? I am thinking of using PLEXIL to describe
> high-level mission sequences (that involve multiple FSM)
> and run them in the simulation environment that we have.
>
> Also, is there any plan for a new software release?
>
> I have not really used PLEXIL (only read the reference
> manual), and appreciate your help.
>
> thanks,
> Yoshi
>
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-----
Chuck Fry - PSGS at NASA Ames, Code TI
Chu...@NA... - (1) 650 604 1882
I do not speak for NASA or Perot Systems, and they do not speak for me.

Re: [plexil-support] plexil question

[<ku...@gm...>]

Thank you for the quick reply.

I've got another question:
Our simulation tool has a Python interface, but from the
online reference manual, it is not clear how to call such
external program/functions.

Chapter 5 of Universal Executive's reference manual seems
to be related, but I am not sure. Links to doxygen seems to be
broken there?
http://www.plexil.wiki.sourceforge.net/doxygen/universal-exec/class_p_l_e_x_i_l_1_1_interface_adaptor.html

Thanks,
Yoshi

Re: [plexil-support] plexil question

[Chuck F. <Cha...@na...>]

The PLEXIL external interface assumes C or C++ as the language for  
external calls.  I'm not familiar with interfacing between C and  
Python.  A quick web search turns up SWIG, http://www.swig.org/ , as  
one possibility.

The Doxygen links will be corrected in the forthcoming release.  The  
external interface API is changing significantly, so this  
documentation will be heavily revised.  Thank you for the report.

  -- Chuck

On Apr 14, 2009, at 6:45 PM, ku...@gm... wrote:

> Thank you for the quick reply.
>
> I've got another question:
> Our simulation tool has a Python interface, but from the
> online reference manual, it is not clear how to call such
> external program/functions.
>
> Chapter 5 of Universal Executive's reference manual seems
> to be related, but I am not sure. Links to doxygen seems to be
> broken there?
> http://www.plexil.wiki.sourceforge.net/doxygen/universal-exec/class_p_l_e_x_i_l_1_1_interface_adaptor.html
>
> Thanks,
> Yoshi

-----
Chuck Fry - PSGS at NASA Ames, Code TI
Chu...@NA... - (1) 650 604 1882
I do not speak for NASA or Perot Systems, and they do not speak for me.

Re: [plexil-support] plexil question

[K. M. D. <Mic...@na...>]

Yoshi,

We are working with a local company who is developing PLEXIL  
authoring tools under an SBIR contract.  They have considered  
creating a FSM package.  If you can tell us a little more about your  
needs, this would be helpful input that I'll pass on to them.

Please note that the source code version of our software is currently  
ahead of the packaged distributions.  They will be in sync when we  
make a new distribution within the next two weeks.

Best,
Mike

K. Michael Dalal
Software Engineer and Technical Lead, PLEXIL
SGT, Inc. at NASA Ames Research Center
650-604-0053


> I was wondering if there is a finite state machine package
> available in PLEXIL. If not, how easy it is to create such
> template? I am thinking of using PLEXIL to describe
> high-level mission sequences (that involve multiple FSM)
> and run them in the simulation environment that we have.
>