boards/shields/adafruit_hts221/doc/index.rst
.. _adafruit_hts221:
Adafruit HTS221 Shield ######################
Overview
The Adafruit HTS221 Temperature and Humidity Sensor Shield_ features
a ST Microelectronics HTS221 Humidity and Temperature Sensor_ and two STEMMA QT connectors.
It measures temperature and humidity.
.. figure:: adafruit_hts221.webp :align: center :alt: Adafruit HTS221 Shield
Adafruit HTS221 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 | I2C SDA | +--------------+------------------------------------+ | SCL | I2C SCL | +--------------+------------------------------------+ | DRDY | Data ready output | +--------------+------------------------------------+ | CS | Keep at high level to use I2C mode | +--------------+------------------------------------+
See :dtcompatible:st,hts221 for details on possible devicetree settings, for example if you
are using the DRDY pin.
Programming
Set --shield adafruit_hts221 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_feather_scorpio_rp2040 :shield: adafruit_hts221 :goals: build flash
.. _Adafruit HTS221 Temperature and Humidity Sensor Shield: https://learn.adafruit.com/adafruit-hts221-temperature-humidity-sensor
.. _ST Microelectronics HTS221 Humidity and Temperature Sensor: https://www.st.com/resource/en/datasheet/hts221.pdf