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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Tue, 20 Jun 2000 17:07:34 GMT
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Viewed:
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1579 times
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Hi guys
I found this tutorial about SDL.
http://www.webproforum.com/sdl/index.html
In lugnet.robotics.rcx.legos, Torkel Niklasson writes:
>
> 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 is in Reply To:
 | | Re: SDL and legOS (was: memory left)
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| Luis Villa <liv@duke.edu> wrote in message news:960488287.393fe...uke.edu... (...) productive, (...) 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 (...) (24 years ago, 9-Jun-00, to lugnet.robotics.rcx.legos)
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