[hdc302x] Initial docs for hdc302x temperature and humidity sensor

components/hdc302x.rst

@@ -0,0 +1,49 @@
+HDC302x Temperature & Humidity Sensor
+=====================================
+
+.. seo::
+    :description: Instructions for setting up HDC302x temperature and humdiity sensor in ESPHome.
+    :image: hdc302x.jpg
+
+
+.. figure:: ../images/hdc302x.jpg
+    :align: center
+    :width: 60.0%
+
+    Adafruit board for HDC302X.
+
+
+Component
+---------
+
+The hdc302x component allows you to talk with the TI HDC302X series (`datasheet <https://www.ti.com/lit/ds/symlink/hdc3020.pdf>`__, `Adafruit <https://learn.adafruit.com/adafruit-hdc3021-precision-temperature-humidity-sensor/overview>`__) of temperature and humidity sensors over I2C.  The :ref:`I2C <i2c>` is required to be set up in your configuration for this sensor to work.
+
+.. code-block:: yaml
+
+    # Minimal configuration entry to report temperature & humidity
+    hdc302x:
+      temperature:
+        name: temp_a
+        id: temp_a
+      humidity:
+        name: humidity_a
+        id: humidity_a
+
+Configuration variables:
+************************
+
+- **temperature** (*Optional*, :ref:`config-sensor`): Sensor configuration for temperature readings.  If omitted, temperature will not be reported.
+- **humidity** (*Optional*, :ref:`config-sensor`): Sensor configuration for humidity readings.  If omitted, humidity will not be reported.
+- **last_error** (*Optional*, :ref:`config-text_sensor`): Configuration for text sensor reporting last error encountered talking to the hdc302x sensor.
+- **i2c_id** (*Optional*): The I²C Bus ID to use.
+- **update_interval** (*Optional*, :ref:`config-time`): Interval in seconds between temperature and humidity updates.
+  Defaults to ``60s``.
+
+See Also
+--------
+
+- :ref:`i2c`
+- :ref:`config-sensor`
+- :ref:`config-text_sensor`
+- :apiref:`API Reference (HDC302X) <hdc302x/hdx302x.h>`
+- :ghedit:`Edit`

components/index.rst

@@ -392,6 +392,7 @@ Environmental
     ENS160, components/sensor/ens160, ens160.jpg, CO2 & Air Quality
     ENS210, components/sensor/ens210, ens210.jpg, Temperature & Humidity
     HDC1080, components/sensor/hdc1080, hdc1080.jpg, Temperature & Humidity
+    HDC302X, components/hdc302x, hdc302x.jpg, Temperature & Humidity
     HHCCJCY10 (MiFlora Pink), components/sensor/xiaomi_hhccjcy10, xiaomi_hhccjcy10.jpg, Soil moisture & Temperature & Light
     Honeywell ABP, components/sensor/honeywellabp, honeywellabp.jpg, Pressure & Temperature
     Honeywell ABP2 I2C, components/sensor/honeywellabp2_i2c, honeywellabp.jpg, Pressure & Temperature