Embedded Systems LM5p-GSM, Product Manual

Page: 238 / 291

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max = self . params . channels
channels = self . channels
ticks = self . ticks
values = self . conn : lrange ( self . params . skey , 0 , max - 1 ) or {}
-- check for new values for each channel
for chan = 1 , max do
val = tonumber (values[ chan ]) or 0
-- target value differs, set transcation
if val ~= channels[ chan ]. target then
channels[ chan ]. target = val
channels[ chan ]. delta = (channels[ chan ]. target - channels[ chan
]. current ) / ticks
channels[ chan ]. ticks = ticks
end
end
end
-- main loop handler
function DMX:run ()
self : getvalues ()
-- transition loop
for i = 1 , self . params . resolution do
self : step ()
self . dm : send ()
os. sleep ( self . sleep )
end
end
-- single transition step
function DMX:step ()
local chan, channels, t
channels = self . channels
-- transition for each channel
for chan = 1 , self . params . channels do
t = channels[ chan ]. ticks
-- transition is active
if t > 0 then
t = t - 1
channels[ chan ]. current = channels[ chan ]. target - channels[ chan
]. delta * t
channels[ chan ]. ticks = t
self . dm : setchannel (chan, channels[ chan ]. current )
end
end
end