Openhab MQTT Example

tboha

It seems your broker does not response to OpenHab or the binding is not effective.

Your installation is different from mine - you are running OpenHab on your raspberry , I'm running OpenHab on my desktop.
We both use OpenHab 1.6.1.
Probably you are running your MQTT Broker (presumably mosquitto?) on your raspberry - so do I.
You are running MyMQTT on Android, so do I.
(by the way -- I am not able to publish something from MyMQTT despite MyMQTT says "Message published" - nothing arrives at the broker. You got similar experiences?)

For a basic debugging environment I use mosquitto_sub in an extra terminal on my Raspberry with

mosquitto_sub -t /#

which should show all messages arriving at the broker.
First test with mosquitto_pub in another terminal:

mosquitto_pub -t /testsw/1 -m "switch1"

If this Message shows up we got our topic instantiated (and the broker is working).

mosquitto_pub -t /testsw/1 -m "ON" -r

Now sending a retained message. If OpenHab connects to the broker, this message will be sent immediately

in the OpenHab log you should see this:

11:15:07.844 INFO  runtime.busevents[:26] - mqttsw1s state updated to switch1.
11:16:21.289 INFO  runtime.busevents[:26] - mqttsw1s state updated to ON

Toggling some switch should give the followin log:

12:00:03.976 DEBUG o.o.b.m.i.MqttItemBinding[:44] - Publishing command OFF to /testsw/1
12:00:03.991 DEBUG o.o.i.t.m.i.MqttBrokerConnection[:437] - Publishing message 6 to topic '/testsw/1'
12:00:03.994 INFO  runtime.busevents[:22] - mqttsw1 received command OFF
12:00:04.004 INFO  runtime.busevents[:26] - mqttsw1s state updated to Green

what does your log show?

Marcus

I use the MQTT Ethernet-Ethernet Gateway as broker http://www.mysensors.org/build/mqtt_gateway

And with MyMQTT on my Smartphone i can see that its working.

Later i will test the other thing.

tboha

This may be the fault. The MQTT Gateway is not a broker - it is just a special form of client, it "only" translates messages from the MySensors network into MQTT acceptable forms an supplies Ethernet access. It does not perform any broker function.
To install a broker you should spend a little time with Mosquitto (http://mosquitto.org/) or http://jpmens.net/2013/09/01/installing-mosquitto-on-a-raspberry-pi/
In a short way: To install MQTT on your raspberry:

sudo apt-get update
sudo apt-get upgrade

to be up to date.

sudo apt-get install mosquitto mosquitto-clients

this should be enough to get your broker up and running with default parameters.

Replace the IP-adress in OpenHab accordingly and you should be done.

Marcus

Its not a broker????

"The MQTT gateway is basically a Ethernet Gateway with modified software which makes it act as a MQTT broker. "

This text in the build instructions has to be fixed. In no minute i thought about installing mosquitto.

But i hope the installation of mosquitto will get it to work.

John

@Marcus It does act as a broker, only with very limited functions, you do not have to subscribe and also no QOS is done. But it is a broker.

Just try to connect an mqtt client to it, and you will see messages being received by the client. (for example mqtt.fx)

Marcus

@John
I use MyMQTT on my smartphone is this a client? There are messages coming in.

Do i need mosquitto for make mysensors work with openhab or not. Thats the only thing that is interesting for me at the moment.

tboha

Hi Marcus, I have to confess I mingled up the names and got a little lack of information. I referred to something I tried several months ago - i didn't fit my needs, so I changed back to the serial Interface - which performed reasonably good and i lost contact to the MySensors-MQTT side via Ethernet.

To my surprise i read there shall be some basic broker functionality in the Gateway sketch - which sounds really good. It will take a while to reactivate my Ethernetshield and give it a try. Sadly my holidays are over tomorrow and there will be not much spare time to test it.

Nevertheless trying Mosquitto would be interesting, e.g. to talk to the MySensors broker directly and to check the OpenHab->Broker connectivity.

Marcus

Hmm, now i am nearly at the beginning. It would be nice if i dont need mosquitto.

Maybe here are others who can help.

Thank u anyway for ur help.

Are we both the only who want to use openhab???

Is there no other way to check if openhab recieves the messages from the broker (ethernet gateway)?

C.r.a.z.y.

I am also using openHab ;) but serial way

Marcus

Is there a big difference between serial and ethernet?

C.r.a.z.y.

@Marcus it works fine for me

Marcus

@Crazy Do u need Mosquitto?

ceburge

I to have had this same problem using openhab and MQTT Gateway. I could toggle relays and such but could not receive any information back from the gateway things such as sketch info or versions. So I decided to pull from that and try PiDome. I like the way PiDome works with the Serial Gateway. Everything seems to be more dynamic. I did try PiDome with the MQTT Gateway and got the same results as with Openhab I could publish information to the gateway but couldn't receive for some reason. Would like to find out what could be happening myself. However right now I'm waiting on parts.

C.r.a.z.y.

@Marcus serial is working fine with piDome, openHab and Vera. No need for mosquito which i never installed and used before.

Marcus

Thank u for your answers.

I love the look of openhab. So i will try the it with mosquitto.

If it will not work then i will try pidome and serial gateway.

If i have new infos i will post them here!

Marcus

Good morning community.

Here is what i did now for installing mosquitto on my raspberry pi.

This infos are from here (http://jpmens.net/2013/09/01/installing-mosquitto-on-a-raspberry-pi/).

  curl -O http://repo.mosquitto.org/debian/mosquitto-repo.gpg.key

  sudo apt-key add mosquitto-repo.gpg.key

  rm mosquitto-repo.gpg.key

  cd /etc/apt/sources.list.d/

  sudo curl -O http://repo.mosquitto.org/debian/mosquitto-repo.list

  sudo apt-get update

  sudo apt-get install mosquitto mosquitto-clients python-mosquitto

Now mosquitto is running.

With:

sudo /etc/init.d/mosquitto stop

I can stop it.

With

sudo /etc/init.d/mosquitto start

I can start it.

But what to do now???
How do i connect mosquitto to my MQTT-Ethernet-Gateway?
How do i connect mosquitto to Openhab?

Please help!

b0rmann

MQTT-Ethernet-Gateway is mqtt brocker, not client :(

to connect mosquitto try use MQTTClientGateway http://forum.mysensors.org/topic/524/mqtt-client-gateway

Marcus

@b0rmann Please read the whole thread and tell me what to do now!!! I only want openhab and mysensors work together. But i want to use my mqtt-ethernet-gateway. Not the serial way.

John

@Marcus PiDome also supports the mqtt gateway next to the serial gateway, so no need to switch. As far as i know, but i'm not an openhab expert, it should work fine as a mqtt client to connect to the mysensors mqtt gateway.

See this thread for some examples: http://forum.mysensors.org/topic/303/mqtt-broker-gateway

The developer of the MQTT gateway has posted some examples in the above thread on how you should be able to use it.

Cheers!

Marcus

@John Thank u very much. I think i will stop with Openhab and give PiDome a try. it seems to be better described what to do to get it run.

In the thread u mentioned i looked for some examples but didnt get them to work and no one could help.

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