407b49b35c
Using find_package to locate Zephyr.
Old behavior was to use $ENV{ZEPHYR_BASE} for inclusion of boiler plate
code.
Whenever an automatic run of CMake happend by the build system / IDE
then it was required that ZEPHYR_BASE was defined.
Using ZEPHYR_BASE only to locate the Zephyr package allows CMake to
cache the base variable and thus allowing subsequent invocation even
if ZEPHYR_BASE is not set in the environment.
It also removes the risk of strange build results if a user switchs
between different Zephyr based project folders and forgetting to reset
ZEPHYR_BASE before running ninja / make.
Signed-off-by: Torsten Rasmussen <Torsten.Rasmussen@nordicsemi.no>
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| .. | ||
| src | ||
| CMakeLists.txt | ||
| prj.conf | ||
| README.rst | ||
| sample.yaml | ||
.. _hello_world:
Hello World
###########
Overview
********
A simple Hello World example that can be used with any supported board and
prints 'Hello World' to the console. This application can be built into modes:
* single thread
* multi threading
Building and Running
********************
This project outputs 'Hello World' to the console. It can be built and executed
on QEMU as follows:
.. zephyr-app-commands::
:zephyr-app: samples/hello_world
:host-os: unix
:board: qemu_x86
:goals: run
:compact:
Sample Output
=============
.. code-block:: console
Hello World! x86
Exit QEMU by pressing :kbd:`CTRL+A` :kbd:`x`.