zephyr

History

Keith Packard 0b90fd5adf samples, tests, boards: Switch main return type from void to int As both C and C++ standards require applications running under an OS to return 'int', adapt that for Zephyr to align with those standard. This also eliminates errors when building with clang when not using -ffreestanding, and reduces the need for compiler flags to silence warnings for both clang and gcc. Most of these changes were automated using coccinelle with the following script: @@ @@ - void + int main(...) { ... - return; + return 0; ... } Approximately 40 files had to be edited by hand as coccinelle was unable to fix them. Signed-off-by: Keith Packard <keithp@keithp.com>		2023-04-14 07:49:41 +09:00
..
boards	samples: sensors: Remove label property from devicetree overlays	2022-07-19 08:23:35 -05:00
src	samples, tests, boards: Switch main return type from void to int	2023-04-14 07:49:41 +09:00
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	boards: nrf52840_pca10056: Rename board to nrf52840dk_nrf52840	2020-03-27 09:14:08 +01:00
sample.yaml	samples: sensor: add integration_platforms	2021-04-09 06:50:47 -04:00

README.rst

.. _ms5837-sample:

MS5837 Sensor Sample
####################

Overview
********

This sample application retrieves the pressure and temperature from a MS5837
sensor every 10 seconds, and prints this information to the UART console.

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

- `nRF52840 Preview development kit`_
- MS5837 sensor

Wiring
******

The nrf52840 Preview development kit should be connected as follows to the
MS5837 sensor.

+-------------+----------+
| | nrf52840  | | MS5837 |
| | Pin       | | Pin    |
+=============+==========+
| P0.3        | SCL      |
+-------------+----------+
| P0.31       | SDA      |
+-------------+----------+

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

Build this sample using the following commands:

.. zephyr-app-commands::
   :zephyr-app: samples/sensor/ms5837
   :board: nrf52840dk_nrf52840
   :goals: build
   :compact:

See :ref:`nrf52840dk_nrf52840` on how to flash the build.

References
**********

.. target-notes::

.. _MS5837 Sensor: http://www.te.com/usa-en/product-CAT-BLPS0017.html?q=&type=products&samples=N&q2=ms5837
.. _nRF52840 Preview development kit: http://www.nordicsemi.com/eng/Products/nRF52840-Preview-DK