Add T6615 Dual-Channel CO2 Sensor (#692)

Co-authored-by: Jesse Hills <3060199+jesserockz@users.noreply.github.com>

components/sensor/t6615.rst

@@ -0,0 +1,74 @@
+T6613/15 CO2 Sensors
+==================================
+
+.. seo::
+    :description: Instructions for setting up T6613 and T6615 sensors for ESPHome
+    :image: images/t6615.png
+    :keywords: t6613 t6615
+
+The ``t6615`` sensor platform allows you to use T6613 and T6615 family sensors
+(`amphenol`_) with ESPHome. T6613 sensors are unreferenced and require ABC to
+calibrate daily, while the T6615 sensors have a sealed reference gas and
+do not require ABC calibration. All ppm ranges are supported by this platform.
+
+.. figure:: images/t6615.png
+    :align: center
+    :width: 50.0%
+
+    T6615 CO_2 Sensor.
+
+.. _amphenol: https://amphenol-sensors.com/en/telaire/co2/525-co2-sensor-modules/319-t6615
+
+As the communication is done using UART, you need to have an :ref:`UART bus <uart>` in your configuration with the
+``rx_pin`` connected to the TX pin of the device (pin 10) and the ``tx_pin`` connected to the RX Pin of the device (pin
+11). The baud rate should be set to 19200.
+
+Additionally, the T6613/15 sensors require 5V power, while most ESP platforms only output 3.3V from their onboard
+regulator, so you may need some additional components to power up the sensor.
+
+.. code-block:: yaml
+
+    # Example configuration entry
+    uart:
+      rx_pin: 1
+      tx_pin: 3
+      baud_rate: 19200
+
+    sensor:
+      - platform: t6615
+        co2:
+          name: "CO2"
+        update_interval: 60s
+
+Configuration variables:
+------------------------
+
+
+- **co2** (**Required**): The CO_2 data from the sensor in parts per million (ppm).
+
+  - **name** (**Required**, string): The name for the CO_2 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``.
+
+- **uart_id** (*Optional*, :ref:`config-id`): Manually specify the ID of the :ref:`UART Component <uart>` if you want
+  to use multiple UART buses.
+
+- **id** (*Optional*, :ref:`config-id`): Manually specify the ID used for actions.
+
+.. figure:: images/t6615-pins.png
+    :align: center
+    :width: 80.0%
+
+    Pins on the T6615. Only the ones marked with a red circle need to be connected.
+
+
+See Also
+--------
+
+- :ref:`sensor-filters`
+- `UART Protocol Documentation <https://amphenol-sensors.com/en/component/edocman/561-telaire-co2-sensors-uart-communications-protocol/download?Itemid=8486%20%27>`__
+- :apiref:`t6615/t6615.h`
+- :ghedit:`Edit`

index.rst

@@ -224,6 +224,7 @@ Sensor Components
     STS3X, components/sensor/sts3x, sts3x.jpg
     SGP30, components/sensor/sgp30, sgp30.jpg
     SGP40, components/sensor/sgp40, sgp40.jpg
+    T6613/15, components/sensor/t6615, t6615.png
     TCS34725, components/sensor/tcs34725, tcs34725.jpg
     Teleinfo, components/sensor/teleinfo, teleinfo.jpg
     Template Sensor, components/sensor/template, description.svg