Add HYT271 doc (#2583)

components/sensor/hyt271.rst

@@ -0,0 +1,49 @@
+HYT271 Temperature & Humidity Sensor
+=====================================================
+
+.. seo::
+    :description: Instructions for setting up HYT271 temperature and humidity sensors.
+    :image: hyt271.jpg
+    :keywords: HYT271
+
+The HYT271 Temperature & Humidity sensors with ESPHome. 
+The :ref:`I²C Bus <i2c>` is required to be set up in your configuration for this sensor to work.
+
+Example sensors:
+
+.. code-block:: yaml
+
+    # Example configuration entry
+    sensor:
+      - platform: hyt271
+        temperature:
+          name: "Living Room Temperature"
+        humidity:
+          name: "Living Room Humidity"
+        update_interval: 60s
+
+Configuration variables:
+------------------------
+
+- **temperature** (**Required**): The information for the temperature sensor.
+
+  - **name** (**Required**, string): The name for the temperature sensor.
+  - **id** (*Optional*, :ref:`config-id`): Set the ID of this sensor for use in lambdas.
+  - All other options from :ref:`Sensor <config-sensor>`.
+
+- **humidity** (**Required**): The information for the humidity sensor.
+
+  - **name** (**Required**, string): The name for the humidity sensor.
+  - **id** (*Optional*, :ref:`config-id`): Set the ID of this sensor for use in lambdas.
+  - All other options from :ref:`Sensor <config-sensor>`.
+
+- **update_interval** (*Optional*, :ref:`config-time`): The interval to check the sensor. Defaults to ``60s``.
+
+
+See Also
+--------
+
+- :ref:`sensor-filters`
+- :apiref:`hyt271/hyt271.h`
+- `i2cdevlib <https://github.com/jrowberg/i2cdevlib>`__ by `Jeff Rowberg <https://github.com/jrowberg>`__
+- :ghedit:`Edit`

index.rst

@@ -317,6 +317,7 @@ Environmental
     TEE501, components/sensor/tee501, TEE501.png, Temperature
     TMP102, components/sensor/tmp102, tmp102.jpg, Temperature
     TMP117, components/sensor/tmp117, tmp117.jpg, Temperature
+    HYT271, components/sensor/hyt271, hyt271.jpg, Temperature & Humidity
 
 
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