Page 1 of 1
Does the expansion port support SPI daisy chaining?
Posted: Sat Jan 26, 2013 7:58 pm
by GameboyRMH
Hey, just wondering if the SPI port supports daisy chaining mode (so that multiple devices could be attached with a splitter-like adapter) or if there's a limit to how many devices can be attached to the expansion port.
Posted: Sun Jan 27, 2013 9:38 pm
by brentp
Hi,
If by daisy chaining you mean 'are there multiple chip select lines' available on the expansion port, the answer is that there's only one chip select line available.
If you wanted multiple devices, I would imagine you could have a small microcontroller between the expansion port and other devices, to be that bridge in-between.
Thanks,
Posted: Tue Jan 29, 2013 2:38 pm
by dimondjack
Could you use one of the outputs as a chip select? It wouldn't be as neat but it might work if you had to do it.
Posted: Wed Jan 30, 2013 9:23 pm
by brentp
I think it would be technically possible. The code will be available for you to explore these kind of options!