Support for multiple DMX slots

Hi there, 

Using this on Raspbian and works a charm to control a single light. I'd like however to use it to control various daisy-chained lights (different settings for each light), any way you can point me to resources to implement that? For example, a protocol sheet where you got the values for the constants you use (DMXOPEN, DMXCLOSE etc) would be useful.

Cheers, 

Elizabeth
