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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>
.. _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>