LM Lutron telnet listener

[AEK]

some additions for that case
Lutron message parser
For example I shall show you how to receive setpoint temperature from Lutron panel/switch
Let’s write all messages from Lutron to knx group address
Change resident script

Code:

require('user.lutron')
 
tcp, err = lutron_login()
if not tcp then
 log('no connection to device', err)
end
while tcp do
 res, err = lutron_receive(tcp)
 --log(res,err)
   if (res == nil) then
     return
    else
      grp.write('15/1/1', res)
   end
end

From Lutron we receive a lot of messages when we change setpoint
For example, this 4 message we will receive twice, when we will change setpoint:
~HVAC,11,78,26,26 – i dont know what is it
~HVAC,11,18,79,0,0 – setpoint in Fahrenheit
~HVAC,11,19,26,0,0 -- setpoint in Celsius degree
~HVAC,11,10,26,26 -- i dont know what is it
 
Let’s see, what we have in  setpoint in Celsius degree
~HVAC,11,19,26,0,0
~HVAC – status from device
11 – device id, which send this message
19 – type of information (Celsius degree in this example)
26 - Celsius degree
0,0 – some other parameters
To parse this message and write temperature to knx address create event based script for message group address (15/1/1)

Code:

--lutron parser
-- get string
temp = event.getvalue()
-- convert sting to table
temp = string.split(temp, ',')
-- if comand type is ~HVAC let's move forward
if temp[1] == '~HVAC' then
    -- if device id = id of our panel let's move forward
    if temp[2] == '11' then -- be carefull, temp[2] is string, not number
        -- if in message is celsius degree
        if temp[3] == '19' then
            -- convert temperature from string to number
            temp = tonumber(temp[4])
            -- check current value of setpoint, to not to write the same value
            cur_temp = grp.getvalue('lutron_temp_setpoint')
            if temp~=cur_temp then
                -- write walue to temp address
                grp.write('lutron_temp_setpoint', temp)
            end
        end
    end
end

To write value from LM to Lutron create event script for setpoint object

Code:

require('user.lutron')
value = event.getvalue()
-- round setmoint to integer
value = math.floor(value)  
tcp, err = lutron_login()
if not tcp then
 log('no connection to device', err)
end
tcp:send('#HVAC,11,19,'..value..',0,0\r\n')

to read some data from lutron use next script (resident in my case)

Code:

require('user.lutron')

--Подключаемся и делаем запрос
tcp, err = lutron_login()
if not tcp then
 log('no connection to device', err)
else
  -- send some request
 tcp:send('?HVAC,11,15\r\n')
  -- and receive answer
 x = tcp:receive()
  -- log answer, or write it to message address
 log(x)
 tcp:close()
end