jeans/developers.home-assistant
jeans/developers.home-assistant
1
0
Fork 0
mirror of https://github.com/home-assistant/developers.home-assistant.git synced 2025-07-16 22:06:29 +00:00
Code Issues Packages Projects Releases Wiki Activity

Add blog post about sensor temperature conversion (#1024)

Browse Source 
* Add blog post about sensor temperature conversion

* Update blog/2021-08-12-sensor_temperature_conversion.md

Co-authored-by: Tom Brien <TomBrien@users.noreply.github.com>

* Document that device_class is mandatory

* Update 2021-08-12-sensor_temperature_conversion.md

Co-authored-by: Tom Brien <TomBrien@users.noreply.github.com>
This commit is contained in:
Erik Montnemery 2021-08-13 12:35:52 +02:00 committed by GitHub
parent 251ed457e4
commit 2653f054a2
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 32 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
blog/2021-08-12-sensor_temperature_conversion.md Normal file
View File

@ -0,0 +1,32 @@
---
author: Erik Montnémery
authorURL: https://github.com/emontnemery
title: Temperature conversions moving to SensorEntity
---
Temperature unit conversions are moving from the `Entity` base class to the `SensorEntity` base
class. Unit conversions will only be done if the sensor's `device_class` attribute is set
to `DEVICE_CLASS_TEMPERATURE`. If the `device_class` is not set or is not set to
`DEVICE_CLASS_TEMPERATURE` temperature conversion will take place during a transition
period and a warning will be logged.
To facilitate this, the sensor entity model has been updated with two new properties,
`native_value` and `native_unit_of_measurement`. This allows us to add additional
unit conversions in the future instead of relying on the integrations to do it themselves.
Sensor implementations should no longer implement the `state()` property function or set
the `_attr_state` attribute. Sensor implementations should also not implement the
`unit_of_measurement` property function, set the `_attr_unit_of_measurement` attribute
or set the `unit_of_measurement` member of `EntityDescription`.
### native_value
The value reported by the sensor.
The actual state written to the state machine may be modified by `SensorEntity` due to
unit conversions.
### native_unit_of_measurement
The unit of measurement of the sensor, if any.
The `unit_of_measurement` written to the state machine may be modified by `SensorEntity`
due to unit conversions.