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0b90fd5adf
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>
.. _accel_polling:
Generic 3-Axis accelerometer polling sample
###########################################
Overview
********
This sample application demonstrates how to use 3-Axis accelerometers.
Building and Running
********************
This sample supports up to 10 3-Axis accelerometers. Each accelerometer needs
to be aliased as ``accelN`` where ``N`` goes from ``0`` to ``9``. For example:
.. code-block:: devicetree
/ {
aliases {
accel0 = &lis2dh;
};
};
Make sure the aliases are in devicetree, then build and run with:
.. zephyr-app-commands::
:zephyr-app: samples/sensor/accel_polling
:board: <board to use>
:goals: build flash
:compact:
Sample Output
=============
.. code-block:: console
lis2dh@19 [m/s^2]: ( -6.013728, -3.064320, 7.277760)
lis2dh@19 [m/s^2]: ( -6.128640, -3.026016, 7.201152)
lis2dh@19 [m/s^2]: ( -6.090336, -3.064320, 7.162848)
lis2dh@19 [m/s^2]: ( -6.128640, -3.026016, 7.354368)
lis2dh@19 [m/s^2]: ( -6.166944, -3.102624, 7.277760)
lis2dh@19 [m/s^2]: ( -6.128640, -2.987712, 7.277760)
lis2dh@19 [m/s^2]: ( -6.052032, -2.987712, 7.277760)
lis2dh@19 [m/s^2]: ( -6.166944, -2.987712, 7.239456)
lis2dh@19 [m/s^2]: ( -6.090336, -3.026016, 7.201152)