Re: Interface Buses

> 
> We're in the process of designing a board with half a 
dozen SPI slaves
> hanging off an AVR. Current intent is to use spare port 
pins as chip
> selects, so that the slaves can be randomly accessed. (It 
would be a
> pain to have to shift the whole lot while responding to 
interrupts.)
> 
> Have to admit though, we haven't done the smoke test 
yet.   :)
> 
> Erik
> 

I've seen 3 very different SPI devices connected to an AVR 
with this kind of arrangement (spare port pins as chip 
selects) and it works just fine. Even where one device was 
input only, another device was output only, and another 
device had input/output.

Eric