Art-Net DMX

[tomnord]

An example of Art-Net receiver. It ignores sequence and universe numbers which are not needed for general use. Edit mapping table to select which groups addresses are mapped to DMX channel numbers starting from 1. Output value for each channel is 1 byte (0..255).

Code:

if not server then   mapping = {     [1] = '32/1/1',     [2] = '32/1/2',     [3] = '32/1/3',   }   server = require('socket').udp()   server:settimeout(1)   server:setsockname('*', 0x1936)   header = 'Art-Net' .. string.char(0, 0, 0x50)   values = {}   function parse(data)     local count, value     if data:sub(1, #header) ~= header then       return     end     count = #data - 18     for i = 1, count do       value = data:byte(i + 18)       if value ~= values[ i ] then         values[ i ] = value         if mapping[ i ] then           grp.update(mapping[ i ], value)         end       end     end   end end data = server:receive() if data then   parse(data) end

Regarding this. Is there any way to have the LM separate commands based on Universe? My client  want's to use universe 3 on art-net to control KNX lights on/off and value dim. Universe 1 and 2 are used for stagelights.