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Tomasz Bursztyka e18fcbba5a device: Const-ify all device driver instance pointers Now that device_api attribute is unmodified at runtime, as well as all the other attributes, it is possible to switch all device driver instance to be constant. A coccinelle rule is used for this: @r_const_dev_1 disable optional_qualifier @ @@ -struct device * +const struct device * @r_const_dev_2 disable optional_qualifier @ @@ -struct device * const +const struct device * Fixes #27399 Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>		2020-09-02 13:48:13 +02:00
..
src	…
CMakeLists.txt	…
README.rst	…
prj.conf	…
sample.yaml	…

README.rst

.. _hts221:

HTS221: Temperature and Humidity Monitor
########################################

Overview
********
This sample periodically reads temperature and humidity from the HTS221
Temperature & Humidity Sensor and displays it on the console


Requirements
************

This sample uses the HTS221 sensor controlled using the I2C interface.

References
**********

 - HTS211: http://www.st.com/en/mems-and-sensors/hts221.html

Building and Running
********************

 This project outputs sensor data to the console. It requires an HTS221
 sensor, which is present on the disco_l475_iot1 board.

.. zephyr-app-commands::
   :zephyr-app: samples/sensor/hts221
   :board: disco_l475_iot1
   :goals: build
   :compact:

Sample Output
=============

 .. code-block:: console

    Temperature:25.3 C
    Relative Humidity:40%
    Temperature:25.3 C
    Relative Humidity:40%
    Temperature:25.3 C
    Relative Humidity:40%
    Temperature:25.3 C
    Relative Humidity:40%

    <repeats endlessly every 2 seconds>