Without any equipment mastering the bus?  Any slave can send packet when the
bus is free? It sounds pretty inetresting for me 'cause I solve something
like this but by another stuff.
Igor.

-----Original Message-----
From: pic microcontroller discussion list [mailto:PICLIST@MITVMA.MIT.EDU]On
Behalf Of Olin Lathrop
Sent: Monday, April 21, 2003 8:25 PM
To: PICLIST@MITVMA.MIT.EDU
Subject: Re: [PIC]: USART -> RS232, Transceiver Chip Required?


> You can't use packets with RS485 because there is a different way how to
> share a bus.

The RS-485 "standard" neither requires nor disallows packets.  It is an
electrical spec only, and leaves the protocol up to the implementor.  One
RS-485 system I designed did in fact use packets.


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