Subject:
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Re: Programming the RCX...
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Newsgroups:
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lugnet.robotics
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Date:
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Mon, 9 Apr 2001 03:30:43 GMT
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Original-From:
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Michael F. Aube <feel_the_force@yahoo.com+stopspammers+>
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Viewed:
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2049 times
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Steve,
Thanks for the reply. I was thinking more along the lines of abstraction
and simplification versus a pure visual language. Something that would
make programming an RCX alot easier with respect to range checking for
valid values, such as motor numbers or valid speeds/angles of rotation,
etc. It all goes along with what Object-Oriented Programming is supposed
to bring to the table (assuming you can model the problem in a decent
way).
A physical state machine like an RCX and the robot that can be built with
it is a perfect subject for such an exercise. I can design and build
"reusable" software models that correspond directly to physical
subassemblies constructed from LEGO parts, sensors, etc. As I physically
build my robots using these subassemblies, I can "build" a corresponding
program from software subassemblies that know how to correctly behave and
drive the physical parts. I just think that would be very cool, and it
should allow you to quickly build AND program your robots!
Regards,
Mike
--- Steve Baker <sjbaker1@airmail.net> wrote:
> "Michael F. Aube" wrote:
> >
> > Hello to All,
> >
> > I don't have a LEGO MindStorm Robot to play with yet :>(, but I've • been
> > doing a lot of research trying to learn the various techniques used to
> > program the RCX.
> >
> > Do any of you use or plan to use Java to develop your RCX programs?
>
> There certainly is some kind of a Java implementation for RCX. I havn't
> used it though...most people start off with NQC (Not Quite C) which is
> a very good starting point...then if you need more, dump the RCX
> firmware
> and replace it with 'LegOS' - which is a more 'serious' realtime
> operating
> system...and then you can run fully compiled C or C++ using the gcc
> compilers.
>
> > I could see one building an abstract software model of the RCX, and • then
> > manipulating that model visually or otherwise to produce a working RCX
> > program in Scheme or any other available language for the RCX.
>
> Well, I guess that's possible (and somewhat what the Lego provided
> programming
> software does).
>
> There has been a *long* history of attempts at visual programming
> languages -
> but without exception, they have failed. All programs of any size in
> the "real"
> world are built with conventional text-based languages.
>
> --
> Steve Baker HomeEmail: <sjbaker1@airmail.net>
> WorkEmail: <sjbaker@link.com>
> HomePage : http://web2.airmail.net/sjbaker1
> Projects : http://plib.sourceforge.net
> http://tuxaqfh.sourceforge.net
> http://tuxkart.sourceforge.net
> http://prettypoly.sourceforge.net
> http://freeglut.sourceforge.net
=====
May the Force be with you.
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Message has 1 Reply:
 | | Re: Programming the RCX...
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| (...) Ah - OK. (...) I think that might just be overkill for a system as simple as the RCX. There are only three motor outputs - and you have no direct control over speed or angles - you can only say "forwards", "reverse", "brake" or "freewheel" (...) (25 years ago, 9-Apr-01, to lugnet.robotics)
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Message is in Reply To:
| | Re: Programming the RCX...
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| (...) There certainly is some kind of a Java implementation for RCX. I havn't used it though...most people start off with NQC (Not Quite C) which is a very good starting point...then if you need more, dump the RCX firmware and replace it with (...) (25 years ago, 9-Apr-01, to lugnet.robotics)
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