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Introducing CMake is an important step in a larger effort to make Zephyr easy to use for application developers working on different platforms with different development environment needs. Simplified, this change retains Kconfig as-is, and replaces all Makefiles with CMakeLists.txt. The DSL-like Make language that KBuild offers is replaced by a set of CMake extentions. These extentions have either provided simple one-to-one translations of KBuild features or introduced new concepts that replace KBuild concepts. This is a breaking change for existing test infrastructure and build scripts that are maintained out-of-tree. But for FW itself, no porting should be necessary. For users that just want to continue their work with minimal disruption the following should suffice: Install CMake 3.8.2+ Port any out-of-tree Makefiles to CMake. Learn the absolute minimum about the new command line interface: $ cd samples/hello_world $ mkdir build && cd build $ cmake -DBOARD=nrf52_pca10040 .. $ cd build $ make PR: zephyrproject-rtos#4692 docs: http://docs.zephyrproject.org/getting_started/getting_started.html Signed-off-by: Sebastian Boe <sebastian.boe@nordicsemi.no> |
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.. _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. .. code-block:: console $ cd samples/sensors/max30101 $ make BOARD=hexiwear_k64 Sample Output ============= .. code-block:: console GREEN=5731 GREEN=5750 GREEN=5748 GREEN=5741 GREEN=5735 GREEN=5737 GREEN=5736 GREEN=5748 <repeats endlessly>