a detailed german description could be found here https://www.unifox.at/software/sma-em-daemon/
translated by google https://translate.google.com/translate?sl=de&tl=en&u=https://www.unifox.at/software/sma-em-daemon/
sma-em-measurement.py: Python3 loop display SMA Energymeter measurement values
sma-daemon.py: Python3 daemon writing consume and supply values to /run/shm/em-[serial]-[value]
# HINT #
Sma homemanager version 2.3.4R added 8 Byte of measurement data.
This version trys to detect the measurement values on obis ids, so it should be save if new values were added or removed.
python3 sys time configparser (SafeConfigParser) signal
apt install python3-pip
Feature pvdata reqires pymodbus
sudo pip install pymodbus
or
sudo pip3 install pymodbus
create a config file in /etc/smaemd/config
Use UTF-8 encoded configfile
Example:
[SMA-EM]
# serials of sma-ems the daemon should take notice
# seperated by space
serials=30028xxxxx
# features could filter serials to, but wouldn't see serials if these serials was not defines in SMA-EM serials
# list of features to load/run
features=simplefswriter sample
[DAEMON]
pidfile=/run/smaemd.pid
# listen on an interface with the given ip
# use 0.0.0.0 for any interface
ipbind=192.168.8.15
# multicast ip and port of sma-datagrams
# defaults
mcastgrp=239.12.255.254
mcastport=9522
# each feature/plugin has its own section
# called FEATURE-[featurename]
# the feature section is required if a feature is listed in [SMA-EM]features
[FEATURE-simplefswriter]
# list serials simplefswriter notice
serials=1900204522
# measurement vars simplefswriter should write to filesystem (only from smas with serial in serials)
values=pconsume psupply qsupply ssupply
[FEATURE-sample]
nothing=here
maybe you have to add a route (example: on hosts with more than one interface)
sudo ip route add 224.0.0.0/4 dev interfacename
sudo apt install git
sudo apt install python3 cl-py-configparser
sudo mkdir /opt/smaemd/
sudo mkdir /etc/smaemd/
cd /opt/smaemd/
sudo git clone https://github.com/datenschuft/SMA-EM.git .
sudo cp systemd-settings /etc/systemd/system/smaemd.service
Create a /etc/smaemd/config file
sudo cp /opt/smaemd/config.sample /etc/smaemd/config
Edit the /etc/smaemd/config file and customize it to suit your needs (e.g. set SMA energy meter serial number, IP address, enable features)
sudo nano /etc/smaemd/config
Update systemd
sudo systemctl daemon-reload
sudo systemctl enable smaemd.service
sudo systemctl start smaemd.service
feel lucky and read /run/shm/em--
sma-em-capture-package - trys to capture a SMA-EM or SMA-homemanager Datagram and display hex and ascii package-info and all recogniced measurement values. Cloud be helpful on package/software changes.
SMA-EM can be run as a dockerized application, which is very useful if you're unable to use the sma homeassistant add-on, but still want this functionality without polluting your host operating system with bespoke python modules, git repos etc.
The simplest way to build and run SMA-EM in docker is to use docker-compose, like so:
docker-compose up -dAttention: This requires a working configuration file at ./smaemd/config - this can of course be changed in docker-compose.yml.
If you want to be more manual about this, build the SMA-EM docker container yourself:
docker build -t sma-em .To run, a minimal command line looks like this:
docker run --network=host -v ./smaemd:/etc/smaemd sma-em