Subject:
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Re: About firmwares
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Newsgroups:
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lugnet.robotics
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Date:
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Sat, 20 Oct 2001 21:23:22 GMT
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Original-From:
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Steve Baker <sjbaker1@airmailAVOIDSPAM.net>
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Reply-To:
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SJBAKER1@antispamAIRMAIL.NET
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Viewed:
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643 times
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Juergen Stuber wrote:
> > I've never used LejOS - but I can certainly confirm that
> > LegOS is *HUGELY* faster than native RCX code.
>
> Lejos is somewhere in the middle.
That's what I'd expect.
> Whether that is fast enough depends on your project,
> if it needs reaction times in the 100ms range no problem,
> at 10-20ms it gets really tough (sensors are read every 3ms).
> It also has has a clock with 1ms precision if you're after that.
Yes - I doubt that you really *need* all that performance on
something like a Lego robot - particularly given the relatively
limited amount of memory in the beast.
> Over NQC (or other LEGO firmware based) it also has
> the advantage of Java being a full programming language.
> Over LegOS the advantage is that it is easier to debug IMHO.
Just to clarify:
NQC isn't "firmware" - it uses the standard Lego firmware and
just generates the same kind of 'bytecode' output that the Lego
programming environment produces...what's *great* about it is
that it allows you to write (not-quite) C programs without having
to mess with replacing the firmware.
----------------------------- Steve Baker -------------------------------
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Message has 1 Reply:
 | | Re: About firmwares
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| (...) Yes, it's easier to use than Lejos, no doubt about it. (...) I think it's "not quite" in the control structures but "very little" in the data structures. (...) It's not that hard to replace the firmware, and with the Lejos firmware you get a (...) (23 years ago, 21-Oct-01, to lugnet.robotics)
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Message is in Reply To:
| | Re: About firmwares
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| (...) Lejos is somewhere in the middle. Whether that is fast enough depends on your project, if it needs reaction times in the 100ms range no problem, at 10-20ms it gets really tough (sensors are read every 3ms). It also has has a clock with 1ms (...) (23 years ago, 20-Oct-01, to lugnet.robotics)
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