Subject:
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Re: What sort of signals(values) can be transmitted and received by the RCX
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Newsgroups:
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lugnet.robotics.rcx
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Date:
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Mon, 5 May 2003 22:37:12 GMT
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Viewed:
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2983 times
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Juergen Stuber wrote:
> "Michael Franklin Bosu" <mfbosu@yahoo.com> writes:
> > From all the readings I have done,if I understood what I
> > read correctly, then it appears that only hexadecimal
> > values can be transmitted from the PC to the RCX or the
> > RCX communicates with only hexadecimal.
>
> No, integers are integers whether written decimal or hexadecimal
> (or in binary or whatever other base[*]). • 0x1 = 1. 0xf = 15. 0xbe = 11*16+14 = 190 (I think.) It's that simple.
>
> What you can do depends on the software you use.
>
> The SendMessage command in the standard firmware can send values
> in the range 0-255 (0x00-0xff, 1 byte).
But 0 is not recommended, as it's the value used when no message has been
recieved.
> I don't know what brickOS offers, at least you can convert to
> bytes by hand and send them. • brickOS is the best: it has LNP, an addressed protocol like UDP.
>
> > Since you have to begin with a header like this: 0x55 0xff 0x00
>
> Never mind the header, that's internal RCX business. • Actually, it has to do with the standard Lego firmware.
> [*] Using Fibonacci numbers as the base allows to convert quite accurately
> between km and miles just by shifting :->
Coincidence? I think not.
--
"I love deadlines. I love the whooshing sound they make as they go by."
- Douglas Adams
Nick Tarleton - nickptar@mindspring.com - PGP key available
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