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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
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src	…
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