Dali interface scenes

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Short example which can be used for any kind of scenes, not only for DALI.

First, you have to define each scene via a Lua table where each item is a table with two items: group address and value. Each scene has a unique id which can be a number or a string.

callscene(id) sets all objects in given scene to their specified value. First it looks for a saved scene in storage and uses default values if storage is empty.

savescene(id) gets current values of all objects from given scene and saves the whole scene in storage.

Code:

scenes = {}

scenes[1] = {
  { '15/1/1', 50 },
  { '15/1/2', 75 },
  { '15/1/3', 90 },
}

function callscene(id)
 local key, scene

 key = 'scene_' .. id
 scene = storage.get(key, scenes[ id ])
 
 if type(scene) ~= 'table' then
   alert('Scene ' .. id .. ' not found')
   return
 end

 for _, item in ipairs(scene) do
   grp.write(item[ 1 ], item[ 2 ])
 end
end

function savescene(id)
 local key, scene

 scene = scenes[ id ]
 if type(scene) ~= 'table' then
   alert('Scene ' .. id .. ' not found')
   return
 end

 for i, item in ipairs(scene) do
   scene[ i ][ 2 ] = grp.getvalue(item[ 1 ])
 end

 key = 'scene_' .. id
 storage.set(key, scene)
end