Subject:
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RCX IR protocol
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Newsgroups:
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lugnet.robotics.rcx
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Date:
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Sun, 2 Sep 2001 20:40:18 GMT
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Viewed:
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2128 times
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Hi all,
I was looking at the IR protocol described at
http://graphics.stanford.edu/~kekoa/rcx/, and i dont quite understand.
In paricular:
What is the packet header?
what does the ~ mean? (eg "RCX reply opcode is always ~query opcode")
I am asking because i am writing an application that would do something
similar to the remote control.
Thanks,
Trevyn.
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Message has 2 Replies:
 | | Re: RCX IR protocol
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| On the page (URL) look under the description of his send command and you'll see he sends a query "10" (hex) and gets a response "ef". This value, 0xEF, is the logical not (modulus 0xFF) of the query value 0x10. The tilde means "not". Dennis (...) (23 years ago, 3-Sep-01, to lugnet.robotics.rcx)
| | | Re: RCX IR protocol
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| (...) Take a look at (URL) (...) 55 ff 00 (...) complement, i.e. invert every bit separately. So for example ~f7=~11110111=00001000=10. (...) Good luck and show it to us when you are done Jürgen (23 years ago, 4-Sep-01, to lugnet.robotics.rcx)
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