Subject:
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Re: Robotics beginner question
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Newsgroups:
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lugnet.robotics
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Date:
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Fri, 23 Mar 2001 02:28:13 GMT
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Original-From:
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Steve Baker <sjbaker1@AVOIDSPAMairmail.net>
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Reply-To:
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sjbaker1@airmail.net+stopspammers+
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Viewed:
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2084 times
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Adam Murtha wrote:
>
> So you can choose what language you want to use? For example, could you use
> a C++ programing program like MS Visual C++, and transfer it to the RCX? Or
> is there specific software that comes with it?
Well, if you want to keep the Lego 'firmware', you are pretty much stuck
with 'NQC' (Not Quite C) which is a small C subset that generates the
same kind of special bytecode as Lego's own graphical programming language.
This is a relatively simple way to learn the RCX and write simple programs
to drive your robots.
For the more advanced user, you can replace the Lego's bytecode interpreter
firmware with a package called 'LegOS' - which is a fairly complete realtime
operating system that allows you to run native machine code instead of bytecode.
With LegOS, you use the GNU cross-compilers (same as used by Linux and BSD) to
generate machine code - which you download into the RCX for execution.
I *believe* that C++ is now supported by LegOS.
HOWEVER, your ability to port MSVC++ code onto the RCX is limited by the
functionality of LegOS....obviously there are a bunch of Microsoft functions
that are NOT supported by LegOS...and vice-versa.
Obviously programs that run under LegOS are *MUCH* faster than NQC because
you don't have the overhead of the Lego bytecode interpreter. OTOH, NQC
is
a VERY easy way to get started...especially at the outset when you are probably
learning all the painful beginners robotic construction lessons!
--
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
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Message has 1 Reply:
Message is in Reply To:
 | | Re: Robotics beginner question
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| So you can choose what language you want to use? For example, could you use a C++ programing program like MS Visual C++, and transfer it to the RCX? Or is there specific software that comes with it? -Adam (...) (26 years ago, 23-Mar-01, to lugnet.robotics)
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