domoticz and home assistant MQTT auto-discovery kickoff for local MQTT from Glow SMETS2 CAD

glow-smets2-cad-mqtt-autodiscovery.py

import paho.mqtt.client as mqtt
import json

client = mqtt.Client()

# set the mqtt user and password if you have to
client.username_pw_set(
    username="your mqtt user", password="your mqtt password"
)
# set the host and the port if you have to
client.connect("127.0.0.1", 1883)

# this is a bit tricky to get; if you listen in on MQTT, eg:
# mosquitto_sub -v -P mqtt_password -u mqtt_user -h 127.0.0.1 -p 1883 -t '#'
# you'll see topics published from your CAD under the topic you set in the
# device settings like:
# [topic you set in the MQTT settings]/[numbers here]/SENSOR/electricitymeter {payload}
# those "numbers here" bit is the unit ID
# add that in the next line

unitID = "ID OF YOUR GLOW CAD UNIT"

device = {
    "identifiers": [unitID],
    "manufacturer": "Hildebrand",
    "model": "Glow SMEST2 CAD",
    "name": "Glow SMEST2 CAD",
}

autoconfig = {
    f"homeassistant/sensor/{unitID}/electricitymeter/config": {
        "device": device,
        "device_class": "energy",
        "enabled_by_default": True,
        "name": "Electricity Meter",
        "state_class": "total_increasing",
        "state_topic": f"glow/{unitID}/SENSOR/electricitymeter",
        "unique_id": f"{unitID}_electricitymeter",
        "unit_of_measurement": "kW",
        "value_template": "{{ value_json.electricitymeter.energy.import.cumulative }}",
    },
    f"homeassistant/sensor/{unitID}/powermeter/config": {
        "device": device,
        "device_class": "energy",
        "enabled_by_default": True,
        "name": "Current Electricity Power",
        "state_class": "measurement",
        "state_topic": f"glow/{unitID}/SENSOR/electricitymeter",
        "unique_id": f"{unitID}_powermeter",
        "unit_of_measurement": "kW",
        "value_template": "{{ value_json.electricitymeter.power.value }}",
    },
    f"homeassistant/sensor/{unitID}/gaskwhmeter/config": {
        "device": device,
        "device_class": "energy",
        "enabled_by_default": True,
        "name": "Gas Meter (kWh)",
        "state_class": "total_increasing",
        "state_topic": f"glow/{unitID}/SENSOR/gasmeter",
        "unique_id": f"{unitID}_gaskwhmeter",
        "unit_of_measurement": "kW",
        "value_template": "{{ value_json.gasmeter.energy.import.cumulative }}",
    },
    f"homeassistant/sensor/{unitID}/gasvolmeter/config": {
        "device": device,
        "device_class": "energy",
        "enabled_by_default": True,
        "name": "Gas Meter (m3)",
        "state_class": "total_increasing",
        "state_topic": f"glow/{unitID}/SENSOR/gasmeter",
        "unique_id": f"{unitID}_gasvolmeter",
        "unit_of_measurement": "m3",
        "value_template": "{{ value_json.gasmeter.energy.import.cumulativevol }}",
    },
}

for topic, pl in autoconfig.items():
    client.publish(topic, payload=json.dumps(pl), qos=0, retain=True)