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
..
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	doc: fix broken file and zephyr-app refs	2019-10-08 15:42:32 -05:00
sample.yaml	samples: sensors: Remove warp7_m4 from fxas21002 platform_allow list	2023-04-05 19:32:14 +02:00

README.rst

.. _fxas21002:

FXAS21002 Gyroscope Sensor
##########################

Overview
********

A sensor application that demonstrates how to use the fxas21002 data ready
interrupt to read gyroscope data synchronously.

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

This project outputs sensor data to the console. It requires an fxas21002
sensor, which is present on the :ref:`hexiwear_k64` board. It does not work on
QEMU.

.. zephyr-app-commands::
   :zephyr-app: samples/sensor/fxas21002
   :board: hexiwear_k64
   :goals: build
   :compact:

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

.. code-block:: console

   X=    -2.063 Y=     0.813 Z=     0.188
   X=    -1.750 Y=     1.063 Z=     0.063
   X=    -2.000 Y=     0.625 Z=     0.063
   X=    -2.188 Y=     0.625 Z=     0.188
   X=    -2.125 Y=     1.313 Z=    -0.063
   X=    -2.188 Y=     1.188 Z=     0.313

<repeats endlessly>