Issue with unit_of_measure

[zoic21]

Hello,

Since last update of HA I have an error when I try to set unit_of_measure on cluster metering at any value other than 0 or 1.

Here what I try to do :

And here the error log :

Enregistreur: homeassistant.components.websocket_api.http.connection
Source: components/websocket_api/commands.py:245
intégration: Home Assistant WebSocket API ([documentation](https://www.home-assistant.io/integrations/websocket_api), [problèmes](https://github.com/home-assistant/core/issues?q=is%3Aissue+is%3Aopen+label%3A%22integration%3A+websocket_api%22))
S'est produit pour la première fois: 16:47:34 (9 occurrences)
Dernier enregistrement: 18:18:34

[140243285369920] Unexpected exception
[140242094374000] Unexpected exception
[140242015180624] Unexpected exception
[140242029996368] Unexpected exception
Traceback (most recent call last):
  File "/usr/src/homeassistant/homeassistant/components/websocket_api/commands.py", line 245, in handle_call_service
    response = await hass.services.async_call(
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    ...<7 lines>...
    )
    ^
  File "/usr/src/homeassistant/homeassistant/core.py", line 2795, in async_call
    response_data = await coro
                    ^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/core.py", line 2838, in _execute_service
    return await target(service_call)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/src/homeassistant/homeassistant/helpers/service.py", line 1109, in _async_admin_handler
    await result
  File "/usr/src/homeassistant/homeassistant/components/zha/websocket_api.py", line 1333, in set_zigbee_cluster_attributes
    response = await zha_device.write_zigbee_attribute(
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    ...<6 lines>...
    )
    ^
  File "/usr/local/lib/python3.13/site-packages/zha/zigbee/device.py", line 878, in write_zigbee_attribute
    value = convert_zcl_value(value, attr_def.type)
  File "/usr/local/lib/python3.13/site-packages/zha/application/helpers.py", line 156, in convert_zcl_value
    field_type[value.replace(" ", "_").split(".", 1)[-1]]
    ~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.13/enum.py", line 789, in __getitem__
    return cls._member_map_[name]
           ~~~~~~~~~~~~~~~~^^^^^^
KeyError: '7'

I don't understand why I go this.

Thanks in advance,

[TheJulianJES]

Per ZCL, unit_of_measure should be read-only, but #267 might cause the KeyError now.
Since unit_of_measure is of type enum8, but not a "defined enum" with members, ZHA can't convert it to the actual Enum.member type. I think we should just return 7 in convert_zcl_value then (and not error out). That should work IIRC.

Are you using a custom Zigbee device where unit_of_measure is writeable or what are you trying to do?

[zoic21]

Hello,

Thanks for your reply, I understand I think I have only device in the world with writable unit_of_mesure. It's zipulse from like : https://github.com/fairecasoimeme/ZiPulses. It's device that count pulse and we can configure unit_of_measure. By default it's kWh but I need to move it to L (7).

Thanks again for your return