Lorawan - The Things Network - Dragino sensor PS-LB

[kropfm]

Create a resident script with non-zero sleep time. Modify username, password and topicname variables as needed. Change group addresses in the ON_MESSAGE callback.

Code:

broker = 'eu1.cloud.thethings.network' port = 8883 username = 'PUT_USER_HERE@ttn' password = 'PUT_API_KEY_HERE' topicname = 'v3/sensor-well-level@ttn/devices/eui-xxxxxxxxxxxxxxxx/up' require('json') mqtt = require('mosquitto') client = mqtt.new() client.ON_CONNECT = function(status, rc, msg)   if status then     log('mqtt connected')     client:subscribe(topicname)   else     log('mqtt connect failed ' .. tostring(msg))     client:disconnect()   end end client.ON_MESSAGE = function(mid, topic, payload)   local data = json.pdecode(payload)   if type(data) ~= 'table' then     return   end   local datetime = data.received_at   local sensor = data.uplink_message.decoded_payload   grp.checkwrite('1/1/1', datetime)   grp.checkwrite('1/1/2', sensor.Bat_V)   grp.checkwrite('1/1/3', sensor.IDC_intput_mA)   grp.checkwrite('1/1/4', sensor.Water_deep_cm) end client.ON_ERROR = log client:login_set(username, password) client:tls_insecure_set(true) status, rc, msg = client:connect(broker, port) if status then   client:loop_forever() else   log('connect failed: ' .. tostring(msg)) end

Hello there

Apology, for my ignorance. I'm trying to get a temperature value from a LoRaWan sensor. I use this script, as I also use the the things network, and while I seem to connect to MQTT, I never get any values. I run this resident script with a 60 seconds delay. I use a virtual variable. Now, there I wasn't sure either. Is the result a text or 2 byte value?

I see no errors but also no values.

Your help is much appreciated.

Martin