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Gerard Marull-Paretas a202341958 devices: constify device pointers initialized at compile time Many device pointers are initialized at compile and never changed. This means that the device pointer can be constified (immutable). Automated using: ``` perl -i -pe 's/const struct device \(?!const)(.)= DEVICE/const struct device const $1= DEVICE/g' /.c ``` Signed-off-by: Gerard Marull-Paretas <gerard.marull@nordicsemi.no>		2022-08-22 17:08:26 +02:00
..
src	devices: constify device pointers initialized at compile time	2022-08-22 17:08:26 +02:00
app.overlay	samples: sensors: Remove label property from devicetree overlays	2022-07-19 08:23:35 -05:00
CMakeLists.txt	cmake: increase minimal required version to 3.20.0	2021-08-20 09:47:34 +02:00
prj.conf	sensors: Remove unnecessary Kconfig setting of sensors	2022-07-25 15:18:56 +02:00
README.rst	sensor: add MAX17262 fuel gauge driver and sample application	2021-05-05 15:54:29 +02:00
sample.yaml	sensor: add MAX17262 fuel gauge driver and sample application	2021-05-05 15:54:29 +02:00

README.rst

.. _max17262:

MAX17262 Fuel Gauge Sensor
###################################

Overview
********

This sample application periodically reads voltage, current and temperature
data from the MAX17262 device that implements SENSOR_CHAN_GAUGE_VOLTAGE,
SENSOR_CHAN_GAUGE_AVG_CURRENT, and SENSOR_CHAN_GAUGE_TEMP.

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

The MAX17262 is an ultra-low power fuel-gauge IC which implements the Maxim
ModelGauge m5 algorithm. The IC monitors a single-cell battery pack and
supports internal current sensing for up to 3.1A pulse current. The IC
provides best performance for batteries with 100mAhr to 6Ahr capacity.

This sample requires a board which provides a configuration for Arduino
connectors and defines node aliases for the I2C interface.
For more info about the node structure see
:zephyr_file:`samples/sensor/max17262/app.overlay`

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

This sample application uses an MAX17262 sensor connected to a board via I2C.
Connect the sensor pins according to the connection diagram given in the
`max17262 datasheet`_.

.. zephyr-app-commands::
   :zephyr-app: samples/sensor/max17262
   :board: nrf52840dk_nrf52840
   :goals: build flash
   :compact:

Sample Output
=============
To check output of this sample , any serial console program can be used.
This example uses ``picocom`` on the serial port ``/dev/ttyUSB0``:

.. code-block:: console

        $ sudo picocom -D /dev/ttyUSB0

.. code-block:: console

        V: 3.626406 V; I: -3.437500 mA; T: 28.011718 °C
        V: 3.626406 V; I: -3.437500 mA; T: 28.011718 °C
        V: 3.626406 V; I: -3.437500 mA; T: 28.011718 °C

References
***********

.. _max17262 datasheet: https://datasheets.maximintegrated.com/en/ds/MAX17262.pdf