OpenMQTTGateway Autodiscovery with OpenHAB following Home Assistant convention

1technophile · January 11, 2023, 11:26pm

Could you share the messages of your sensor you have into your mqtt broker homeassistant/sensor , like below

{"stat_t":"+/+/BTtoMQTT/112233445566","dev_cla":"temperature","unit_of_meas":"°C","name":"LYWSD03MMC_ATC-tempc","uniq_id":"112233445566-tempc","val_tpl":"{{ value_json.tempc | is_defined }}","state_class":"measurement","device":{"identifiers":["112233445566"],"connections":[["mac","112233445566"]],"manufacturer":"Xiaomi","model":"LYWSD03MMC_ATC","name":"LYWSD03MMC-800021","via_device":"OMG"}}

1technophile · January 11, 2023, 11:28pm

Could you check if you see the messages coming from the sensor in the broker with MQTT Explorer ?

Klausn · January 12, 2023, 8:16am

If i add the sensor as Thing i get the following message in the openhab Logfile:

2023-01-12 09:13:06.696 [WARN ] [re.thing.internal.ThingFactoryHelper] - Could not create channel 'A4C138E18ECF_2Dbatt#sensor', because channel type 'mqtt:A4C138E18ECF_2Dbatt_sensor' could not be found.

2023-01-12 09:13:06.700 [WARN ] [re.thing.internal.ThingFactoryHelper] - Could not create channel 'A4C138E18ECF_2Dvolt#sensor', because channel type 'mqtt:A4C138E18ECF_2Dvolt_sensor' could not be found.

2023-01-12 09:13:06.704 [WARN ] [re.thing.internal.ThingFactoryHelper] - Could not create channel 'A4C138E18ECF_2Dtemp#sensor', because channel type 'mqtt:A4C138E18ECF_2Dtemp_sensor' could not be found.

2023-01-12 09:13:06.707 [WARN ] [re.thing.internal.ThingFactoryHelper] - Could not create channel 'A4C138E18ECF_2Dhum#sensor', because channel type 'mqtt:A4C138E18ECF_2Dhum_sensor' could not be found.

2023-01-12 09:13:06.710 [WARN ] [re.thing.internal.ThingFactoryHelper] - Could not create channels for channel group 'A4C138E18ECF_2Dbatt' for thing type 'mqtt:homeassistant_A4C138E18ECF:d8bc7a043f:A4C138E18ECF', because channel group type 'mqtt:A4C138E18ECF_2Dbatt' could not be found.

2023-01-12 09:13:06.712 [WARN ] [re.thing.internal.ThingFactoryHelper] - Could not create channels for channel group 'A4C138E18ECF_2Dvolt' for thing type 'mqtt:homeassistant_A4C138E18ECF:d8bc7a043f:A4C138E18ECF', because channel group type 'mqtt:A4C138E18ECF_2Dvolt' could not be found.

2023-01-12 09:13:06.715 [WARN ] [re.thing.internal.ThingFactoryHelper] - Could not create channels for channel group 'A4C138E18ECF_2Dtemp' for thing type 'mqtt:homeassistant_A4C138E18ECF:d8bc7a043f:A4C138E18ECF', because channel group type 'mqtt:A4C138E18ECF_2Dtemp' could not be found.

2023-01-12 09:13:06.717 [WARN ] [re.thing.internal.ThingFactoryHelper] - Could not create channels for channel group 'A4C138E18ECF_2Dhum' for thing type 'mqtt:homeassistant_A4C138E18ECF:d8bc7a043f:A4C138E18ECF', because channel group type 'mqtt:A4C138E18ECF_2Dhum' could not be found.

Klausn · January 12, 2023, 8:23am

In mqtt broker homeassistant/sensor it looks like:

{
  "stat_t": "+/+/BTtoMQTT/A4C138BDE967",
  "dev_cla": "temperature",
  "unit_of_meas": "°C",
  "name": "temp",
  "uniq_id": "A4C138BDE967-temp",
  "val_tpl": "{{ value_json.tempc }}",
  "state_class": "measurement",
  "device": {
    "identifiers": [
      "A4C138BDE967"
    ],
    "connections": [
      [
        "mac",
        "A4C138BDE967"
      ]
    ],
    "manufacturer": "Xiaomi",
    "model": "LYWSD03MMC",
    "name": "LYWSD03MMC-BDE967",
    "via_device": "OpenMQTTGateway_ESP32_BLE_OH"
  }
}

homeassistant/sensor/A4C138BDE967-temp/config

1technophile · January 12, 2023, 12:04pm

And under this do you see the data coming? (You need to prefix it by home/<gateway_name>

Klausn · January 12, 2023, 12:05pm

there is only this:

{
  "id": "A4:C1:38:BD:E9:67",
  "mac_type": 0,
  "name": "LYWSD03MMC",
  "rssi": -88,
  "servicedata": "30585b05e267e9bd38c1a408",
  "rssi": -87,
  "servicedata": "30585b05e467e9bd38c1a408",
  "servicedatauuid": "0xfe95"
}

1technophile · January 12, 2023, 12:50pm

For more regular measurement, I advise to flash the LYWSD03MMC with ATC or PVVX custom firmware, it should take less than 5 minutes and can be done over the air.

The stock LYWSD03MMC requires a bind key to read the data or a BLE connection that consumes battery life.

Klausn · January 12, 2023, 1:47pm

I have flashed all my sensors and now the warnings in openhab are gone.

all of them are now online…

1technophile · January 13, 2023, 12:27am

ANd you see the sensor values I suppose ?

Dom_KS · January 13, 2023, 2:58pm

1technophile:

Could you share the messages of your sensor you have into your mqtt broker homeassistant/sensor , like below
{"stat_t":"+/+/BTtoMQTT/112233445566","dev_cla":"temperature","unit_of_meas":"°C","n

Yes I can:

Topic: home/TheengsGateway/BTtoMQTT/A4C13834A4ECQoS: 0
{"name": "ATC_34A4EC", "id": "A4:C1:38:34:A4:EC", "rssi": -64, "brand": "Xiaomi", "model": "LYWSD03MMC", "model_id": "LYWSD03MMC_PVVX", "tempc": 21.06, "tempf": 69.908, "hum": 57.65, "batt": 0, "volt": 2.154}

All my LYWSD03MMC uses ATC PVVX

I created “manualy” thing and then it works without errors

2023-01-13 15:54:31.636 [INFO ] [openhab.event.ItemStateChangedEvent ] - Item 'aaa_term_xiaomi_aaa_temp' changed from 21.09 to 21.04

==> /var/log/openhab/openhab.log <==

2023-01-13 15:54:31.643 [WARN ] [t.generic.ChannelStateTransformation] - Executing the JINJA-transformation failed: An error occurred while transformation. UnknownTokenException: Unknown token found: value_json.batt | is_defined

2023-01-13 15:54:31.657 [WARN ] [t.generic.ChannelStateTransformation] - Executing the JINJA-transformation failed: An error occurred while transformation. UnknownTokenException: Unknown token found: value_json.tempc | is_defined

2023-01-13 15:54:31.669 [WARN ] [t.generic.ChannelStateTransformation] - Executing the JINJA-transformation failed: An error occurred while transformation. UnknownTokenException: Unknown token found: value_json.hum | is_defined

2023-01-13 15:54:31.678 [WARN ] [t.generic.ChannelStateTransformation] - Executing the JINJA-transformation failed: An error occurred while transformation. UnknownTokenException: Unknown token found: value_json.volt | is_defined

Klausn · January 13, 2023, 7:23pm

Yes it works fine now. I see values.

1technophile · January 13, 2023, 8:07pm

Please try the last Docker version once built:

Or replace the parameter
HAAS_DISCOVERY: false
by
HASS_DISCOVERY: false

Dom_KS · January 13, 2023, 9:16pm

Thank you very much!
Now it’s working great!

riegelbrau · March 30, 2023, 9:02pm

This seems to be still an issue in the actual version 1.5 of OpenMQTTGateway binary liligo-rtl_433. It would be great to have the Autodiscovery running for OpenHAB.

1technophile · April 5, 2023, 9:06pm

We could add its activation as an mqtt command if suitable for you

riegelbrau · April 6, 2023, 5:53am

This would be a great option to have in the prebuild binary. I tried several steps to compile it with the option, but could not get it running on the board.

Regards Christoph

1technophile · April 6, 2023, 9:02pm

You can build your binary with gitpod if you like

Here is an environment that should work with OpenHAB, paste it into the environments.ini, save

[env:lilygo-rtl_433-oh]
platform = ${com.esp32_platform}
board = ttgo-lora32-v21
board_build.partitions = min_spiffs.csv
lib_deps =
  ${com-esp.lib_deps}
  ${libraries.wifimanager32}
  ${libraries.ssd1306}
  ${libraries.rtl_433_ESP}
build_flags =
  ${com-esp.build_flags}
  '-DOpenHABDiscovery=true'
; *** OpenMQTTGateway Config ***
  ;'-UZmqttDiscovery'          ; disables MQTT Discovery
  '-DvalueAsATopic=true'    ; MQTT topic includes model and device
  '-DGateway_Name="OpenMQTTGateway_lilygo_rtl_433_ESP"'
; *** OpenMQTTGateway Modules ***
  '-DZgatewayRTL_433="rtl_433"'
  '-DZradioSX127x="SX127x"'
; *** ssd1306 Display Options ***
  '-DZdisplaySSD1306="LilyGo_SSD1306"'

And launch the following command in the terminal:
platformio run -e lilygo-rtl_433-oh

Wait one minute and you should have the binaries ready:

riegelbrau · April 6, 2023, 9:27pm

I tried it several times with a my_env.ini that contained the -DOpenHABDiscovery=true as the only difference. The compilation ran without errors, but I couldn’t upload the binary from platformio, because no ports were shown in my two Lenovo laptops.
Later I tried to upload the binaries with esptool from Linux, but got an error. With the expressif framework on Windows 10 I could upload successfully, but the software did not start, no Wifi network appeared on my mobile.

riegelbrau · April 15, 2023, 5:01pm

I compiled the environment lilygo-rtl_433-oh, you provided and indeed its running now with OH autodiscovery.
I used this upload tool:

and got these results:

After a reboot of the device ist was running and I could configure my SSID and MQTT broker.
Before I had the additional boot_app0.bin selected. I found it in other sources for uploading to ESP32. Could this have been wrong?
This was my environment in my_env.ini:

[platformio]
default_envs = lilygo-rtl_433

[env:lilygo-rtl_433-openhab]
platform = ${com.esp32_platform}
board = ttgo-lora32-v21
; ~/.platformio/packages/framework-arduinoespressif32/variants/.../pins_arduino.h
board_build.partitions = min_spiffs.csv
lib_deps =
  ${com-esp.lib_deps}
  ${libraries.wifimanager32}
  ${libraries.ssd1306}
  ${libraries.rtl_433_ESP}
build_flags =
  ${com-esp.build_flags}
; *** OpenMQTTGateway Config ***
  ;'-UZmqttDiscovery'          ; disables MQTT Discovery
  '-DvalueAsATopic=true'    ; MQTT topic includes model and device
  '-DOpenHABDiscovery=true'
  '-DGateway_Name="OpenMQTTGateway_lilygo_rtl_433_ESP_OH"'
; *** OpenMQTTGateway Modules ***
  '-DZgatewayRTL_433="rtl_433"'
  '-DZradioSX127x="SX127x"'
; *** ssd1306 Display Options ***
  '-DZdisplaySSD1306="LilyGo_SSD1306"'
;  '-DLOG_TO_OLED=true'         ; Enable log to OLED
;  '-DJSON_TO_OLED=true'
;  '-DLOG_LEVEL_OLED=LOG_LEVEL_NOTICE'
;  '-DDISPLAY_IDLE_LOGO=false'
;  '-DDISPLAY_BRIGHTNESS=80'
;  '-DDISPLAY_METRIC=false'
custom_description = For ESP32, Gateway using RTL_433_ESP and RadioLib, openHAB discovery enabled
custom_hardware = ESP32 LILYGO LoRa32 V2.1

Where is the wrong point?

Thanks a lot for your help!
Regards Christoph

1technophile · April 16, 2023, 12:09am

Try to take the one in the link (Option 2) Upload ready-to-go binaries | OpenMQTTGateway v1.7.0. It would avoid this uncertainty.

Also once the wifi and mqtt credentials are configured in the web portal what does the board OLED or a serial monitor says ?