Embedded Systems LogiMachine5 Power - DMX Interconnection with LM; DMX Function

205
setdtr
set data transfer register (dtr)
0..255
initialise
initialise
randomise
randomise
compare
compare
+
withdraw
withdraw
searchaddrh
set search address (h)
0..255
searchaddrm
set search address (m)
0..255
searchaddrl
set search address (l)
0..255
programshortaddr
program short address
0..63
verifyshortaddr
verify short address
+
0..63
queryshortaddr
query short address
+
physicalselection
physical selection
enabledevicetype
enable device type x
0..255
15. DMX interconnection with LM
DMX protocol support is realized upon RS485 serial port.
DMX function
Add the following user library in Scripting  User libraries.
local luadmx =
require('luadmx')
module('DMX', package.seeall)
local DMX = {}
-- default params
local defaults = {
-- storage key
skey = 'dmx_line_1',
-- RS-485 port
port = '/dev/RS485',
-- number of calls per second
resolution = 20,
-- total number of channels to use
channels = 3,
-- transition time in seconds, does not include DMX transfer time
transition = 2,
}
-- value setter
function set(chan, val, key)
key = key or defaults.skey
chan = tonumber(chan) or 0
val = tonumber(val) or -1