Subject:
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Re: SDL and legOS (was: memory left)
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Newsgroups:
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lugnet.robotics.rcx.legos
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Date:
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Fri, 9 Jun 2000 07:57:02 GMT
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Viewed:
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1163 times
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Luis Villa <liv@duke.edu> wrote in message
news:960488287.393fe35f65784@webmail.dulug.duke.edu...
> Quoting Torkel Niklasson <torkel.niklasson@telelogic.com>:
>
> > Well, SDL is a very good programming language indeed. Its main
> > attraction to
> > me is that it draws your attention away from stupid little programming
> > errors, such as memory allocation, pointers not pointing where they're
> > supposed to point and suchlike. SDL code is pretty much a number of
> > state
> > machines, and you control it with signals and timers, which are
> > generated by
> > other state machines or the environment (the robot, in our case).
>
> That's what I gathered from the docs. Interesting- sounds much more • productive,
> too, if perhaps a little limiting.
Well, it depends of course on what you intend to do with it. If you for
example design and implement a protocol of some sort, it's a great language.
It is not, as you may have gathered from the documentation, for writing user
interfaces.
> > The programming tool itself generates C-code, based on the SDL code you
> > produce. (Without legOS, it would not have been possible for us to get
> > as
> > far as we have. Thanks to all who have worked on it.)
> > Then you have to adapt this C-code to the platform you are currently
> > adapting to. In our case, it's the RCX/legOS. So far, we've got the
> > robot to
> > do pretty much what we want it to do.
>
> Great. What exactly do you mean by "adapt", by the way? Just certain • interfaces
> that need to be provided or what?
The C-code that is generated by the code generator contains a number of
functions that are run each time a signal is sent to the environment. These
have to be implemented so that they do what they're supposed to do. For
example, if the signal is called Beep, making it beep when that function is
called would be appropriate.
Torkel
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Message has 1 Reply:
Message is in Reply To:
 | | Re: SDL and legOS (was: memory left)
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| Quoting Torkel Niklasson <torkel.niklasson@te...ogic.com>: (...) That's what I gathered from the docs. Interesting- sounds much more productive, too, if perhaps a little limiting. (...) Great. What exactly do you mean by "adapt", by the way? Just (...) (24 years ago, 8-Jun-00, to lugnet.robotics.rcx.legos)
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