zephyr/samples/sensor/hts221
Gerard Marull-Paretas 79e6b0e0f6 includes: prefer <zephyr/kernel.h> over <zephyr/zephyr.h>
As of today <zephyr/zephyr.h> is 100% equivalent to <zephyr/kernel.h>.
This patch proposes to then include <zephyr/kernel.h> instead of
<zephyr/zephyr.h> since it is more clear that you are including the
Kernel APIs and (probably) nothing else. <zephyr/zephyr.h> sounds like a
catch-all header that may be confusing. Most applications need to
include a bunch of other things to compile, e.g. driver headers or
subsystem headers like BT, logging, etc.

The idea of a catch-all header in Zephyr is probably not feasible
anyway. Reason is that Zephyr is not a library, like it could be for
example `libpython`. Zephyr provides many utilities nowadays: a kernel,
drivers, subsystems, etc and things will likely grow. A catch-all header
would be massive, difficult to keep up-to-date. It is also likely that
an application will only build a small subset. Note that subsystem-level
headers may use a catch-all approach to make things easier, though.

NOTE: This patch is **NOT** removing the header, just removing its usage
in-tree. I'd advocate for its deprecation (add a #warning on it), but I
understand many people will have concerns.

Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>
2022-09-05 16:31:47 +02:00
..
src includes: prefer <zephyr/kernel.h> over <zephyr/zephyr.h> 2022-09-05 16:31:47 +02:00
CMakeLists.txt
README.rst
prj.conf samples: hts221: Fix testing support by twister 2022-09-01 13:15:14 -05:00
sample.yaml samples: hts221: Fix testing support by twister 2022-09-01 13:15:14 -05:00

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>