zephyr

History

Kumar Gala 22e65cb9ba gpio: mcux: Convert convert to DT_INST defines Convert driver to use DT_INST_ defines. As part of this conversion we remove the Kconfig options for per GPIO controller enables and instead get that information from device tree. This means we now disable each GPIO controller by default in the DTS and have each board dts enable the GPIO controller ports it needs. Signed-off-by: Kumar Gala <kumar.gala@linaro.org>		2020-04-23 17:07:41 -05:00
..
boards	gpio: mcux: Convert convert to DT_INST defines	2020-04-23 17:07:41 -05:00
src	…
CMakeLists.txt	…
README.rst	…
prj.conf	…
sample.yaml	…

README.rst

.. _max30101:

MAX30101 Heart Rate Sensor
##########################

Overview
********

A sensor application that demonstrates how to poll data from the max30101 heart
rate sensor.

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

This project configures the max30101 sensor on the :ref:`hexiwear_k64` board to
enable the green LED and measure the reflected light with a photodiode. The raw
ADC data prints to the console. Further processing (not included in this
sample) is required to extract a heart rate signal from the light measurement.

.. zephyr-app-commands::
   :zephyr-app: samples/sensor/max30101
   :board: hexiwear_k64
   :goals: build
   :compact:

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

.. code-block:: console

   GREEN=5731
   GREEN=5750
   GREEN=5748
   GREEN=5741
   GREEN=5735
   GREEN=5737
   GREEN=5736
   GREEN=5748

<repeats endlessly>