Subject:
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Re: Communicating with Cybermaster not easy
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Newsgroups:
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lugnet.robotics
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Date:
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Tue, 26 Jan 1999 08:21:28 GMT
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Original-From:
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Peter Hesketh <PBH@PHESK.DEMON.COavoidspam.UK>
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Viewed:
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1101 times
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In article <008d01be48ad$3aa6bae0$d8b1acc1@fam.-van-dam>, B van Dam
<bvandam@westbrabant.net> writes
> > I use 2400bps 8 bit no parity 1 stopbit
> > I am sending a byte sequence like the following:
> > 0x55 0xFF 0x00 0x10 0xEF 0x10
> > where the three first bytes are the header,
> > 0x10 is data and 0xEF is complimentary to 0x10
> > and the last 0x10 is checksum (sum of all data mod 256)
> >
> > The light on the rcx radio tower is blinking when I send the data
> > but the light on the rcx is not blinking as it should when receiving data.
> >
> > I get nothing back to th PC.
> >
> > Do I need some advice or should I take up collecting stamps?
If the protocol for Cybermaster is the same as for RCX, you should
alternate the &H08 bit in consecutive commands, otherwise the RCX can
ignore them. So if you try command 10 as in your example, you should
try command 18 the next time, then 10 etc.
Have a look at my qbasic program in www.phesk.demon.co.uk/lego/
--
Regards - Peter Hesketh, Mynyddbach, Mon.
Forty reasons why a dog is better than a woman: number 20
"Dogs understand that all animals smaller than dogs were made to be
hunted."
--
Did you check the web site first?: http://www.crynwr.com/lego-robotics
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Message is in Reply To:
 | | Re: Communicating with Cybermaster not easy
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| Hi Sten, Well, I don't have any stamps to sell you, so perhaps you'd care to take a look on my website which has examples for the Cybermaster in Visual Basic. I hope Visual Prolog can use .ocx controls otherwise please mail me for some adresses of (...) (26 years ago, 25-Jan-99, to lugnet.robotics)
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