Huawei AC Charger is missing on MQTT HA Auto-Discovery

[scharrrfi]

What happened?

It seems, that the Huawei AC Charger is missing in Home Assistant MQTT Auto-Discovery Topic.

To Reproduce Bug

Unmark the Auto-Discovery option, save an mark it again.

Expected Behavior

Home Assistant should create a Huawei AC Charger device.

Install Method

Pre-Compiled binary from GitHub releases

What git-hash/version of OpenDTU-OnBattery?

2024.11.20

What firmware variant (PIO Environment)?

generic_esp32_4mb_no_ota

Relevant log/trace output

No response

Anything else?

No response

Please confirm the following

• I believe this issue is a bug that affects all users of OpenDTU-OnBattery, not something specific to my installation.
• I have already searched for relevant existing issues and discussions before opening this report.
• I have updated the title field above with a concise description.
• I have double checked that my inverter does not contain a W in the model name (like HMS-xxxW) as they are not supported.

[schlimmchen]

Is disabling and re-enabling HASS Autodiscovery neccesary to see the issue? In other words: Have you ever seen the AC charger in HASS at all?

[scharrrfi]

I thought, that re-enabling does start a new Auto-Discovery with all devices. I have added the AC charger later in the OpenDTU setup. I have never seen the AC charger in Home Assistant at all.

But the states will published over MQTT correctly:

[AndreasBoehm]

@scharrrfi could you check if you can find AC charger related topics under the homeassistant topic?

[scharrrfi]

It is not under the homeassistant topic.

[github-actions]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[schlimmchen]

I will eventually look at this more closely. Right now it looks like there is no HASS auto-discovery at all for the Huawei grid charger.

[boennemann]

I'm observing the exact same behavior.

[boennemann]

I'm not familiar enough with the code base to contribute this directly, but I used my friendly neighborhood LLM to help me come up with this script. It sets the auto discovery values accordingly and everything shows up on HA.

#!/bin/bash

MQTT_BROKER="localhost"
MQTT_PORT=1883
MQTT_USER="mqtt"
MQTT_PASS="password"

DEVICE_ID="huawei_r4850g2_0001"
DEVICE_NAME="Huawei R4850G2"
MQTT_BASE_TOPIC="homeassistant"

TOPIC_PREFIX="huawei/huawei"

DEVICE_INFO='"dev": {
    "name": "Huawei R4850G2",
    "ids": "'"$DEVICE_ID"'",
    "mf": "Huawei",
    "mdl": "R4850G2"
}'

mosquitto_pub -r -h "$MQTT_BROKER" -p "$MQTT_PORT" -u "$MQTT_USER" -P "$MQTT_PASS" \
  -t "$MQTT_BASE_TOPIC/sensor/$DEVICE_ID/data_age/config" \
  -m '{
    "name": "Data Age",
    "stat_t": "'"$TOPIC_PREFIX/data_age"'",
    "uniq_id": "'"$DEVICE_ID"_data_age'",
    "unit_of_meas": "s",
    "dev_cla": "duration",
    "stat_cla": "total",
    '"$DEVICE_INFO"'
  }'

mosquitto_pub -r -h "$MQTT_BROKER" -p "$MQTT_PORT" -u "$MQTT_USER" -P "$MQTT_PASS" \
  -t "$MQTT_BASE_TOPIC/sensor/$DEVICE_ID/efficiency/config" \
  -m '{
    "name": "Efficiency",
    "stat_t": "'"$TOPIC_PREFIX/efficiency"'",
    "uniq_id": "'"$DEVICE_ID"_efficiency'",
    "unit_of_meas": "%",
    "stat_cla": "measurement",
    "val_tpl": "{{ (value | float * 100) | round(1) }}",
    '"$DEVICE_INFO"'
  }'

mosquitto_pub -r -h "$MQTT_BROKER" -p "$MQTT_PORT" -u "$MQTT_USER" -P "$MQTT_PASS" \
  -t "$MQTT_BASE_TOPIC/sensor/$DEVICE_ID/output_voltage/config" \
  -m '{
    "name": "Output Voltage",
    "stat_t": "'"$TOPIC_PREFIX/output_voltage"'",
    "uniq_id": "'"$DEVICE_ID"_output_voltage'",
    "unit_of_meas": "V",
    "dev_cla": "voltage",
    "stat_cla": "measurement",
    '"$DEVICE_INFO"'
  }'

mosquitto_pub -r -h "$MQTT_BROKER" -p "$MQTT_PORT" -u "$MQTT_USER" -P "$MQTT_PASS" \
  -t "$MQTT_BASE_TOPIC/sensor/$DEVICE_ID/input_voltage/config" \
  -m '{
    "name": "Input Voltage",
    "stat_t": "'"$TOPIC_PREFIX/input_voltage"'",
    "uniq_id": "'"$DEVICE_ID"_input_voltage'",
    "unit_of_meas": "V",
    "dev_cla": "voltage",
    "stat_cla": "measurement",
    '"$DEVICE_INFO"'
  }'

mosquitto_pub -r -h "$MQTT_BROKER" -p "$MQTT_PORT" -u "$MQTT_USER" -P "$MQTT_PASS" \
  -t "$MQTT_BASE_TOPIC/sensor/$DEVICE_ID/output_current/config" \
  -m '{
    "name": "Output Current",
    "stat_t": "'"$TOPIC_PREFIX/output_current"'",
    "uniq_id": "'"$DEVICE_ID"_output_current'",
    "unit_of_meas": "A",
    "dev_cla": "current",
    "stat_cla": "measurement",
    '"$DEVICE_INFO"'
  }'

mosquitto_pub -r -h "$MQTT_BROKER" -p "$MQTT_PORT" -u "$MQTT_USER" -P "$MQTT_PASS" \
  -t "$MQTT_BASE_TOPIC/sensor/$DEVICE_ID/max_output_current/config" \
  -m '{
    "name": "Max Output Current",
    "stat_t": "'"$TOPIC_PREFIX/max_output_current"'",
    "uniq_id": "'"$DEVICE_ID"_max_output_current'",
    "unit_of_meas": "A",
    "dev_cla": "current",
    "stat_cla": "measurement",
    '"$DEVICE_INFO"'
  }'

mosquitto_pub -r -h "$MQTT_BROKER" -p "$MQTT_PORT" -u "$MQTT_USER" -P "$MQTT_PASS" \
  -t "$MQTT_BASE_TOPIC/sensor/$DEVICE_ID/input_current/config" \
  -m '{
    "name": "Input Current",
    "stat_t": "'"$TOPIC_PREFIX/input_current"'",
    "uniq_id": "'"$DEVICE_ID"_input_current'",
    "unit_of_meas": "A",
    "dev_cla": "current",
    "stat_cla": "measurement",
    '"$DEVICE_INFO"'
  }'

mosquitto_pub -r -h "$MQTT_BROKER" -p "$MQTT_PORT" -u "$MQTT_USER" -P "$MQTT_PASS" \
  -t "$MQTT_BASE_TOPIC/sensor/$DEVICE_ID/output_power/config" \
  -m '{
    "name": "Output Power",
    "stat_t": "'"$TOPIC_PREFIX/output_power"'",
    "uniq_id": "'"$DEVICE_ID"_output_power'",
    "unit_of_meas": "W",
    "dev_cla": "power",
    "stat_cla": "measurement",
    '"$DEVICE_INFO"'
  }'

mosquitto_pub -r -h "$MQTT_BROKER" -p "$MQTT_PORT" -u "$MQTT_USER" -P "$MQTT_PASS" \
  -t "$MQTT_BASE_TOPIC/sensor/$DEVICE_ID/input_power/config" \
  -m '{
    "name": "Input Power",
    "stat_t": "'"$TOPIC_PREFIX/input_power"'",
    "uniq_id": "'"$DEVICE_ID"_input_power'",
    "unit_of_meas": "W",
    "dev_cla": "power",
    "stat_cla": "measurement",
    '"$DEVICE_INFO"'
  }'

mosquitto_pub -r -h "$MQTT_BROKER" -p "$MQTT_PORT" -u "$MQTT_USER" -P "$MQTT_PASS" \
  -t "$MQTT_BASE_TOPIC/sensor/$DEVICE_ID/input_temp/config" \
  -m '{
    "name": "Input Air Temperature",
    "stat_t": "'"$TOPIC_PREFIX/input_temp"'",
    "uniq_id": "'"$DEVICE_ID"_input_temp'",
    "unit_of_meas": "°C",
    "dev_cla": "temperature",
    "stat_cla": "measurement",
    '"$DEVICE_INFO"'
  }'

mosquitto_pub -r -h "$MQTT_BROKER" -p "$MQTT_PORT" -u "$MQTT_USER" -P "$MQTT_PASS" \
  -t "$MQTT_BASE_TOPIC/sensor/$DEVICE_ID/output_temp/config" \
  -m '{
    "name": "Output Air Temperature",
    "stat_t": "'"$TOPIC_PREFIX/output_temp"'",
    "uniq_id": "'"$DEVICE_ID"_output_temp'",
    "unit_of_meas": "°C",
    "dev_cla": "temperature",
    "stat_cla": "measurement",
    '"$DEVICE_INFO"'
  }'

mosquitto_pub -r -h "$MQTT_BROKER" -p "$MQTT_PORT" -u "$MQTT_USER" -P "$MQTT_PASS" \
  -t "$MQTT_BASE_TOPIC/number/$DEVICE_ID/limit_online_voltage/config" \
  -m '{
    "name": "Online Voltage Limit",
    "cmd_t": "'"$TOPIC_PREFIX/cmd/limit_online_voltage"'",
    "min": 48,
    "max": 58.5,
    "step": 0.1,
    "unit_of_meas": "V",
    "uniq_id": "'"$DEVICE_ID"_limit_online_voltage'",
    '"$DEVICE_INFO"'
  }'

mosquitto_pub -r -h "$MQTT_BROKER" -p "$MQTT_PORT" -u "$MQTT_USER" -P "$MQTT_PASS" \
  -t "$MQTT_BASE_TOPIC/number/$DEVICE_ID/limit_online_current/config" \
  -m '{
    "name": "Online Current Limit",
    "cmd_t": "'"$TOPIC_PREFIX/cmd/limit_online_current"'",
    "min": 0,
    "max": 50,
    "step": 0.1,
    "unit_of_meas": "A",
    "uniq_id": "'"$DEVICE_ID"_limit_online_current'",
    '"$DEVICE_INFO"'
  }'

mosquitto_pub -r -h "$MQTT_BROKER" -p "$MQTT_PORT" -u "$MQTT_USER" -P "$MQTT_PASS" \
  -t "$MQTT_BASE_TOPIC/number/$DEVICE_ID/limit_offline_voltage/config" \
  -m '{
    "name": "Offline Voltage Limit",
    "cmd_t": "'"$TOPIC_PREFIX/cmd/limit_offline_voltage"'",
    "min": 48,
    "max": 58.5,
    "step": 0.1,
    "unit_of_meas": "V",
    "uniq_id": "'"$DEVICE_ID"_limit_offline_voltage'",
    '"$DEVICE_INFO"'
  }'

mosquitto_pub -r -h "$MQTT_BROKER" -p "$MQTT_PORT" -u "$MQTT_USER" -P "$MQTT_PASS" \
  -t "$MQTT_BASE_TOPIC/number/$DEVICE_ID/limit_offline_current/config" \
  -m '{
    "name": "Offline Current Limit",
    "cmd_t": "'"$TOPIC_PREFIX/cmd/limit_offline_current"'",
    "min": 0,
    "max": 50,
    "step": 0.1,
    "unit_of_meas": "A",
    "uniq_id": "'"$DEVICE_ID"_limit_offline_current'",
    '"$DEVICE_INFO"'
  }'

mosquitto_pub -r -h "$MQTT_BROKER" -p "$MQTT_PORT" -u "$MQTT_USER" -P "$MQTT_PASS" \
  -t "$MQTT_BASE_TOPIC/select/$DEVICE_ID/charger_mode/config" \
  -m '{
    "name": "Charger Mode",
    "cmd_t": "'"$TOPIC_PREFIX/cmd/mode"'",
    "stat_t": "'"$TOPIC_PREFIX/mode"'",
    "options": ["0", "1", "2", "3"],
    "uniq_id": "'"$DEVICE_ID"_charger_mode'",
    '"$DEVICE_INFO"'
  }'

echo "✅ MQTT Auto-Discovery messages sent. Restart Home Assistant to apply changes."

[schlimmchen]

Hm, yeah, feel free to use this, however beware that I don't know what happens when the canonical HA auto-discovery is ready, which will probably look different than the config this script provides. I guess the entities will be different then, so once the canonical ones are auto-discovered and should be used, they are different entities than these. Not sure whether I explained this well enough...

[boennemann]

@schlimmchen Yeah, no, perfectly makes sense. I'm very aware that I'm setting myself up for some migration fun later. Thank you for the warning!