Mqtt broker app communication with local client event based script

Mqtt broker app communication with local client event based script - Printable Version

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+--- Thread: Mqtt broker app communication with local client event based script (/showthread.php?tid=4579)

Mqtt broker app communication with local client event based script - Rajesh - 13.02.2023

broker = "localhost"
port = 1883
username = "admin"
password = "password"
topic = "casambi/1/set/target_level"

value = event.getvalue()

if value == 1
then
topic = "casambi/1/set/target_level"
payload = tostring"("level":255,"duration":1,"targetid":177,"targettype":1,)"
else
payload = tostring"("level":0,"duration":1,"targetid":177,"targettype":1,)"
end

mqtt = require("mosquitto")
client = mqtt.new()

client.ON_CONNECT = function(status, rc, msg)
if status then
log("mqtt connected")
client:publish(topic, tostring(payload))
else
log("mqtt connect failed " .. tostring(msg))
client:disconnect()
end
end

client.ON_PUBLISH = function()
client:disconnect()
end

client:login_set(username, password)
status, rc, msg = client:connect(broker, port)

if status then
client:loop_forever()
else
log("connect failed: " .. tostring(msg))
end

Error log shows:
attempt to call global 'level' (a nil value)
stack traceback:

RE: Mqtt broker app communication with local client event based script - admin - 13.02.2023

Your tostring() call is incorrect. If this is an event script then value is true / false not 1 / 0. Are you sure about the payload format? Is it JSON?

RE: Mqtt broker app communication with local client event based script - Rajesh - 13.02.2023

(13.02.2023, 12:31)admin Wrote: Your tostring() call is incorrect. If this is an event script then value is true / false not 1 / 0. Are you sure about the payload format? Is it JSON?

Yes the paylod format is in JSON format

RE: Mqtt broker app communication with local client event based script - admin - 13.02.2023

Code:
value = event.getvalue()

level = value and 255 or 0

payload = require('json').encode({

  level = level,

  duration = 1,

  targetid = 177,

  targettype = 1,

})

mqtt = require("mosquitto")

RE: Mqtt broker app communication with local client event based script - Rajesh - 14.02.2023

Thank you admin it's working. but for to get the data from mqtt server in json and load the particular data in group address on event based script.

RE: Mqtt broker app communication with local client event based script - admin - 14.02.2023

See this example: https://forum.logicmachine.net/showthread.php?tid=1759&pid=10926#pid10926