zephyr/samples/sensor/sm351lt
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
sample.yaml

README.rst

.. _sm351lt:

SM351LT: Magnetoresistive Sensor Example
########################################

Overview
********

This sample application periodically polls an SM351LT magnetoresistive sensor
and displays if a magnet near to the sensor, via the console.

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

This sample uses the Honeywell SM351LT sensor.

References
**********

For more information about the SM351LT magnetoresistive sensor see
https://sensing.honeywell.com/SM351LT-low-power

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

The SM351LT (or compatible) sensors are available on the following boards:

* :ref:`bt510`

Building on bt510
==================

:ref:`bt510` includes a Honeywell SM351LT magnetoresistive sensor.

.. zephyr-app-commands::
   :zephyr-app: samples/sensor/sm351lt
   :board: bt510
   :goals: build flash
   :compact:

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

.. code-block:: console

    Polling at 0.5 Hz
    #1 @ 6 ms: 1
    #2 @ 2007 ms: 0
    #3 @ 4009 ms: 0
    #4 @ 6010 ms: 1
    #5 @ 8012 ms: 1