mqtt with logic machine

[admin]

Your topic names are incorrect. On top of that the data is published in JSON so you cannot write it directly to objects. Here's a working example for the multisensor topic:

Code:

if not broker then
  json = require('json')
  broker = 'mqtt.intingy.com'

  mqtt_to_local = {
    ['entelechy/multisensor/UNKNOWN-ROOM/E5001000143C'] = function(payload)
      local data = json.pdecode(payload)

      if type(data) == 'table' then
        grp.checkupdate('32/1/2', data['Temperature'])
        grp.checkupdate('32/1/3', data['Relative Humidity'])
        grp.checkupdate('32/1/4', data['Illumination'])
      end
    end,
  }

  -- object to topic map
  object_to_mqtt = {}

  datatypes = {}

  grp.sender = 'mq'
  require('socket')

  for addr, _ in pairs(object_to_mqtt) do
    local obj = grp.find(addr)
    if obj then
      datatypes[ addr ] = obj.datatype
    end
  end

  mclient = require('mosquitto').new()
  mclient:login_set('entelechy_client', 'nNu6Unh0E/4')

  mclient.ON_CONNECT = function(res, ...)
    log('mqtt connect status', res, ...)

    if res then
      for topic, _ in pairs(mqtt_to_local) do
        mclient:subscribe(topic)
      end
    else
      mclient:disconnect()
    end
  end

  mclient.ON_MESSAGE = function(mid, topic, payload)
    local fn = mqtt_to_local[ topic ]

    if fn then
      fn(payload)
    end
  end

  mclient.ON_DISCONNECT = function(...)
    log('mqtt disconnect', ...)
    mclientfd = nil
  end

  function mconnect()
    local fd

    mclient:connect(broker)
    fd = mclient:socket()

    -- fd ref is valid
    if fd then
      mclientfd = fd
    end
  end

  mconnect()

  function publishvalue(event)
    -- message from us or client is not connected
    if event.sender == 'mq' or not mclientfd then
      return
    end

    local addr = event.dst
    local dpt = datatypes[ addr ]
    local topic = object_to_mqtt[ addr ]

    -- unknown object
    if not dpt or not topic then
      return
    end

    local value = busdatatype.decode(event.datahex, dpt)
    if value ~= nil then
      if type(value) == 'boolean' then
        value = value and 1 or 0
      end

      mclient:publish(topic, tostring(value))
    end
  end

  lbclient = require('localbus').new(1)
  lbclient:sethandler('groupwrite', publishvalue)

  lbclientfd = socket.fdmaskset(lbclient:getfd(), 'r')

  -- run timer every 5 seconds
  timer = require('timerfd').new(5)
  timerfd = socket.fdmaskset(timer:getfd(), 'r')
end

-- mqtt connected
if mclientfd then
  mclientfdset = socket.fdmaskset(mclientfd, mclient:want_write() and 'rw' or 'r')
  res, lbclientstat, timerstat, mclientstat =
      socket.selectfds(10, lbclientfd, timerfd, mclientfdset)
-- mqtt not connected
else
  res, lbclientstat, timerstat =
    socket.selectfds(10, lbclientfd, timerfd)
end

if mclientfd and mclientstat then
  if socket.fdmaskread(mclientstat) then
    mclient:loop_read()
  end

  if socket.fdmaskwrite(mclientstat) then
    mclient:loop_write()
  end
end

if lbclientstat then
  lbclient:step()
end

if timerstat then
  -- clear armed timer
  timer:read()

  if mclientfd then
    mclient:loop_misc()
  else
    mconnect()
  end
end

More topic payload conversion functions can be added to the mqtt_to_local table as needed.