Subject:
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RCX comunications - UDP/IP???
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Newsgroups:
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lugnet.robotics
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Date:
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Thu, 5 Dec 2002 04:03:25 GMT
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Viewed:
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721 times
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Is the RCX capable of broadcasting a message without handshaking similar to
UDP/IP using NQC? For those that arent familar, UDP simply broadcast a
packet and doesn't require a confirmation that the packet was recieved
unlike its brother TCP/IP
This is for a race car on the discussion that I would like the car to
broadcast an Identifier, lap time or otherwise for "pit board" type
communications between the multiple cars and a separate RCX trackside.
any code example would be great.
Jeff Wood
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Message has 2 Replies:
 | | Re: RCX comunications - UDP/IP???
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| (...) THe simple 'SendMessage(c)' command in NQC doesn't do any handshaking - and (of course) it broadcasts. (...) THe 'SendMessage' command only sends a single byte - and one problem with this is that if you want to send a multi-byte message, it (...) (22 years ago, 5-Dec-02, to lugnet.robotics)
| | | Re: RCX comunications - UDP/IP???
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| Using LNP (included in BrickOS) you can broadcast a packet using lnp_integrity_write(). Such a packet is guaranteed to arrive intact if it arrives at all. Each RCX must have a "listener" set up for the port you broadcast on. LNP addressing normally (...) (22 years ago, 5-Dec-02, to lugnet.robotics)
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