zephyr

History

Alberto Escolar Piedras befc96f22e userspace tests/samples: Exclude in posix arch These samples & tests cannot be run in this architecture as it does not support userspace. Today they are filtered by kconfig, which works but spends time running cmake. As native_posix is a default test platform it is better to filter it alltogether by arch, which saves quite a lot of time. Signed-off-by: Alberto Escolar Piedras <alberto.escolar.piedras@nordicsemi.no>		2023-10-24 09:05:29 +02:00
..
src	…
CMakeLists.txt	…
README.rst	…
prj.conf	samples: userspace: Remove unnecessary build options	2023-09-18 10:44:04 +01:00
sample.yaml	userspace tests/samples: Exclude in posix arch	2023-10-24 09:05:29 +02:00

README.rst

.. _hello_world_user:

Hello World
###########

Overview
********
A simple Hello World example that can be used with any supported board and
prints 'Hello World from UserSpace!' to the console.
If unavailable or unconfigured then 'Hello World from privileged mode.'
is printed instead.

This application can be built into modes:

* single thread
* multi threading

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

This project outputs 'Hello World from UserSpace!' to the console.
It can be built and executed on QEMU as follows:

.. zephyr-app-commands::
   :zephyr-app: samples/userspace/hello_world_user
   :host-os: unix
   :board: qemu_riscv32
   :goals: run
   :compact:

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

.. code-block:: console

    Hello World from UserSpace! qemu_riscv32

Exit QEMU by pressing :kbd:`CTRL+A` :kbd:`x`.