I am not able to receive any mess fom mqtt

1

Item file
Number Pir_sensor_E1 “PIR [%d]” (E1,Lights) {mqtt="<[broker:/testpub:state:default]"}
Sitemap
Frame {
Group item=E1 label=“Entrance” icon=“firstfloor”
{

                         Text item=Pir_sensor_E1
                            }

from mqttfx i am able to receive sensor output as 0 and 1 from the topic /testpub

i am receiving the below message
2016-06-16 12:50:01.930 [WARN ] [.c.i.events.EventPublisherImpl] - given new state is NULL, couldn’t post update for ‘Pir_sensor_E1’

2

My first idea is to test, whether MQTT is actually working, by opening two terminals…
In the first terminal type:
mosquitto_sub -d -t hello/world

In the second type:
mosquitto_pub -d -t hello/world -m "Greetings from Terminal window 2"

you should see on terminal 1:
Client mosqsub/6179-rpiautomat received PUBLISH (d0, q0, r0, m0, 'hello/world', ... (32 bytes)) Greetings from Terminal window 2

if you get: no such command, the MQTT service is not installed on your machine
Install on rPi Jessie with:
sudo wget http://repo.mosquitto.org/debian/mosquitto-repo.gpg.key sudo apt-key add mosquitto-repo.gpg.key sudo rm mosquitto-repo.gpg.key

Then make the mosquitto repository available to apt:
sudo wget http://repo.mosquitto.org/debian/mosquitto-jessie.list sudo apt-get update
install the core packages (server & clients):
sudo apt-get install mosquitto mosquitto-clients

Then check, whether you installed the MQTT binding for OH, by looking at /addons for org.openhab.binding.mqtt-1.8.3.jar

Sorry, just realised you can see 0 | 1 in mqtt…

Another thing could be the / in front of testpub, remove it and see what happens.
From {mqtt="<[broker:/testpub:state:default]"}
to {mqtt="<[broker:testpub:state:default]"}

3

Hello Max_G
Thanks for replying but it didn’t work.

4

It looks to me that you are receiving a message, but OH doesn’t understand it. Can you post the contents of the message, from the output of mosquitto_sub, so we can see what OH needs to decode?

1 Like
5

Hi gpbenton,
ya you were right,i was receiving some blank spaces in between 0 and 1, now i rectified it and able to get the status values 0 and 1. But in my mobile openhab app it not upadating status where as in the browser it will update according to the change.how to overcome this issue.