Local bus and sending to MQtt

[admin]

Calling grp.gettags/grp.find for each value change is very inefficient. You should cache all tagged objects and respective names, datatypes etc when the script starts. The cache is a table where each key is object group address and value is a table with required properties.

Then the callback can be similar to this:

Code:

function localbus_onmessage(event)
  -- find cached object
  local obj = objects[ event.dst ]

  if not obj then
    return
  end

  local value = busdatatype.decode(event.datahex, obj.datatype, event.dstraw)
  
  if type(value) == 'boolean' then    
    value = value and 1 or 0
  end

  mqtt_send:publish('from_knx_tag/'..  obj.topic, obj.prefix ..' '.. value)
end