> > So to do the autobaud you need a polled system, with a master device,
> > but can
> have multiple slave devices.
> > Instead of using RS232 as the physical layer you need something like
> > CAN or
> RS485 transceivers if you don't
> > use 'proper' LIN ones.
>=20
> You are right, there has to be some sort of conflict resolution, such as =
polled
> system.  I do not see why RS232 cannot be used though, can you elaborate =
please?.
> RS232 is a physical layer only anyway, the communication protocol is up t=
o
> developer.  Every packet can start/end with whatever sequence one desires=
 to have.

Well, yes you can use RS232 if you have only one slave, or do as equipment =
I used to service did, and use an open collector transistor onto a line tha=
t had a pull down resistor and used RS232 levels for a multi-drop line.
--=20
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