This Script/Project was forked from RalfZim/venus.dbus-fronius-smartmeter. I removed the request area and added an MQTT subscriber / client. You have to run Paho Client on your GXDevice to make this script work
python -m ensurepip --upgrade pip install paho-mqtt
The Python script cyclically reads data from a MQTT Broker and publishes information on the dbus, using the service name com.victronenergy.grid. This makes the Venus OS work as if you had a physical Victron Grid Meter installed.
In the Python file, you should put the IP of your Broker
Copy the files to the /data folder on your venus:
Copy the files to the /data folder on your venus: /data/mqtttogrid/MQTTtoGridMeter.py /data/mqtttogrid/kill_me.sh /data/mqtttogrid/service/run
Set permissions for files:
chmod 755 /data/mqtttogrid/service/run
chmod 744 /data/mqtttogrid/kill_me.sh
Get two files from the velib_python and install them on your venus:
/data/mqtttogrid/vedbus.py
/data/mqtttogrid/ve_utils.pyAdd a symlink to the file /data/rc.local:
ln -s /data/mqtttogrid/service /service/mqtttogrid
Or if that file does not exist yet, store the file rc.local from this service on your Raspberry Pi as /data/rc.local . You can then create the symlink by just running rc.local:
rc.local
The daemon-tools should automatically start this service within seconds.
You can check the status of the service with svstat:
svstat /service/mqtttogrid
It will show something like this:
/service/mqtttogrid: up (pid 10078) 325 seconds
If the number of seconds is always 0 or 1 or any other small number, it means that the service crashes and gets restarted all the time.
When you think that the script crashes, start it directly from the command line:
python /data/mqtttogrid/MQTTtoGridMeter.py
and see if it throws any error messages.
If the script stops with the message
dbus.exceptions.NameExistsException: Bus name already exists: com.victronenergy.grid"
it means that the service is still running or another service is using that bus name.
If you want to restart the script, for example after changing it, just run the following command:
/data/mqtttogrid/kill_me.sh
The daemon-tools will restart the scriptwithin a few seconds.
In my installation at home, I am using the following Hardware: