RE: [avr-gcc-list] TWI slave device addresses?

[Brian Cuthie]

You're right! It is very likely that you will eventually end up with devices
from multiple vendors that have conflicting addresses. If the device has an
external CS line you can use it to gate requests, but then if you're going
to do that then why have addresses at all? This is exactly why the SPI port
doesn't do addressing explicitly. 

-brian

> -----Original Message-----
> From: address@hidden 
> [mailto:address@hidden On Behalf Of Douglas Dotson
> Sent: Thursday, February 05, 2004 11:10 PM
> To: address@hidden
> Subject: [avr-gcc-list] TWI slave device addresses?
> 
> I'm using TWI (I2C) for the first time. I'm not clear on how 
> slave addresses are assigned.
> With only 256 possabilities it would seem that collisions are 
> possible. The device I am using
> (X1226 RTC) has two addresses. Since the bus can have 
> multiple devices and those devices addresses seem to be 
> hardwired and so few available addresses, is one required to 
> manually choose devices so as to avoid conflicts?
> 
> Doug
> 
> 
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