Subject:
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RCX/CM doc on reading sensors using Get Value <source> <argument>
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Newsgroups:
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lugnet.robotics
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Date:
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Thu, 4 Jan 2001 09:52:09 GMT
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Original-From:
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Theo van Eijndhoven <theo@symproSPAMCAKE.nl>
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Viewed:
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698 times
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Thanks to y'all. As we could have expected Kekoa DID indeed have
it documented. As he points out in his reply it's just in a different
location, and I missed the connection. (see below included)
Great works Kekoa!
Great. Another mistery solved.
Now I continue my journey through DTR and RTS. Marco hinted at
using spirit.ocx. I'm programming in Java and have no clue how to
from there access spirit. I got the javax.comm package from Sun,
and guess I just have to become an expert on serials :-)
I did manage to exchange (yes exchange, not just send) information with
the CM. So far a 'unreliable' link due to, I suspect, not appropriately
dealing with the DTR/RTS protocol. The Reply packet that I read is
regularly wrong, but I'm quite shure that is because I'm not correctly
dealing with the port. I do have a copy of Dario Laverde Java code to
drive the RCX. A couple of people pointed out that communication
with the CM-Tower ain't the same. Difference in packet headers,
RCX 55 ff 00
CM fe 00 00 ff
easy to overcome, difference in port-settings... oops... best tips for
the CM related serial port setting so far
DTR high/true
RTS low/false
But I'm not at the point of reliable data exchange yet.
I may check the Delphi of Mark Overmars' great RCX-CC,
even though I've never seen Delphi. Thanks for the tip. I have been
using NQC + RCX-CC until after three evenings my CM complained about
a lack of memory.
Thanks to everyone,
Theo.
> From: "Marco C." <marco@soporcel.pt>
> Subject: Re: reading sensors on CM • ...
> You can see that, to get Sensor1 the source=9 and argument=0;
> Sensor2->source=9, argument=1 and so on...
> From: Kekoa Proudfoot <kekoa@Graphics.Stanford.EDU>
> Subject: Re: RCX/CM doc • ...
>
> Sorry I never made this clear on that document.
>
> See:
>
> http://graphics.stanford.edu/~kekoa/rcx/#Protocol
>
> Scroll down to "Byte code interpreter" then continue down to "Sources".
> The things like <0,1,2> and <0.31> indicate valid values for the
> corresponing arguments.
>
> -Kekoa
>
>
>
>
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