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RE: RS485 - XPL on the wire
- Subject: RE: RS485 - XPL on the wire
- From: "Ian Lowe" <ian@xxxxxxxxxxxxxxxxxx>
- Date: Thu, 21 Oct 2004 12:23:42 +0100
>I'm interested in looking at 'dumber' devices (such as light switches,
temp sensors, etc) on RS485 with XPL. >Unless I've missed something the
current specs don't relate to RS232/485 transport.
Me too!
Frank should be along later (he's in Oz, so probably asleep just now) -
he's done a bunch of xPL PIC code for lightweight stuff.
>My suggestion would be to use the normal STX<XPL message>ETX
CRC-16 ETX
as per Xap and similar to bi-sync,
>although given the lightweight aims of XPL I'd also be happy with
STX<XPL message>ETX LRC-8
We have used a simple <STX>message<ETX> wrapper till now - but
this
obviously has it's limits - what's LRC-8?
Ian.
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