Add MPL3115A2 component (#2009)

* Add MPL3115A2

* Resized image

* Extended underline

components/sensor/mpl3115a2.rst

@@ -0,0 +1,70 @@
+MPL3115A2 Barometric Pressure/Altitude/Temperature Sensor
+=========================================================
+
+.. seo::
+    :description: Instructions for setting up MPL3115A2 atmospheric pressure sensors.
+    :image: mpl3115a2.jpg
+    :keywords: MPL3115A2
+
+The ``mpl3115a2`` sensor platform allows you to use your MPL3115A2 atmospheric pressure sensors
+(`datasheet <https://www.nxp.com/docs/en/data-sheet/MPL3115A2.pdf>`__,
+`Adafruit`_)  temperature and pressure sensors with ESPHome. The :ref:`I²C <i2c>` is
+required to be set up in your configuration for this sensor to work.
+
+.. figure:: images/mpl3115a2-full.jpg
+    :align: center
+    :width: 50.0%
+
+    MPL3115A2 Barometric Pressure/Altitude/Temperature Sensor
+
+.. _Adafruit: https://www.adafruit.com/product/1893
+
+.. code-block:: yaml
+
+    # Example configuration entry
+    sensor:
+      - platform: mpl3115a2
+          temperature:
+            name: "MPL3115A2 Temperature"
+          pressure:
+            name: "MPL3115A2 Pressure"
+          update_interval: 10s
+
+Configuration variables:
+------------------------
+The MPL3115A2 can be configured to output either pressure or altitude depending on which
+sensor is configured.
+
+- **pressure** (**Optional**): The information for the pressure sensor.
+
+  - **name** (**Required**, string): The name for the pressure sensor.
+  - **id** (*Optional*, :ref:`config-id`): Set the ID of this sensor for use in lambdas.
+  - All other options from :ref:`Sensor <config-sensor>`.
+
+- **altitude** (**Optional**): The information for the altitude sensor.
+
+  - **name** (**Required**, string): The name for the altitude sensor.
+  - **id** (*Optional*, :ref:`config-id`): Set the ID of this sensor for use in lambdas.
+  - All other options from :ref:`Sensor <config-sensor>`.
+
+- **temperature** (**Optional**): 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>`.
+
+- **address** (*Optional*, int): Manually specify the I²C address of
+  the sensor. Defaults to ``0x60``.
+- **update_interval** (*Optional*, :ref:`config-time`): The interval to check the
+  sensor. Defaults to ``60s``.
+
+See Also
+--------
+
+- :ref:`sensor-filters`
+- :doc:`bmp280`
+- :doc:`bme280`
+- :doc:`bmp085`
+- :doc:`ms5611`
+- :apiref:`mpl3115a2/mpl3115a2.h`
+- :ghedit:`Edit`

index.rst

@@ -303,6 +303,7 @@ Environmental
     Inkbird IBS-TH1 Mini, components/sensor/inkbird_ibsth1_mini, inkbird_isbth1_mini.jpg, Temperature & Humidity
     MCP9808, components/sensor/mcp9808, mcp9808.jpg, Temperature
     MH-Z19, components/sensor/mhz19, mhz19.jpg, CO2 & Temperature
+    MPL3115A2, components/sensor/mpl3115a2, mpl3115a2.jpg, Temperature & Pressure
     MS5611, components/sensor/ms5611, ms5611.jpg, Pressure
     NTC Thermistor, components/sensor/ntc, ntc.jpg, Temperature
     QMP6988, components/sensor/qmp6988, qmp6988_env3.png, Temperature & Pressure