boards/shields/adafruit_aht20/doc/index.rst
.. _adafruit_aht20:
Adafruit AHT20 Shield #####################
Overview
The Adafruit AHT20 Temperature and Humidity Sensor Shield_ features
an Aosong AHT20 Humidity and Temperature Sensor_ and two STEMMA QT connectors.
It measures temperature and humidity.
.. figure:: adafruit_aht20.webp :align: center :alt: Adafruit AHT20 Shield
Adafruit AHT20 Shield (Credit: Adafruit)
Requirements
This shield can be used with boards which provide an I2C connector, for
example STEMMA QT or Qwiic connectors.
The target board must define a zephyr_i2c node label.
See :ref:shields for more details.
+--------------+-------------------+ | Shield Pin | Function | +==============+===================+ | SDA | AHT20 I2C SDA | +--------------+-------------------+ | SCL | AHT20 I2C SCL | +--------------+-------------------+
See :dtcompatible:aosong,aht20 for details on possible devicetree settings.
Programming
Set --shield adafruit_aht20 when you invoke west build. For example
when running the :zephyr:code-sample:dht_polling sample:
.. zephyr-app-commands:: :zephyr-app: samples/sensor/dht_polling :board: adafruit_qt_py_rp2040 :shield: adafruit_aht20 :goals: build
.. _Adafruit AHT20 Temperature and Humidity Sensor Shield: https://learn.adafruit.com/adafruit-aht20
.. _Aosong AHT20 Humidity and Temperature Sensor: https://www.aosong.com/userfiles/files/media/Data%20Sheet%20AHT20.pdf