.. zephyr:board:: qemu_leon3

Overview

The LEON3 QEMU board configuration is used to emulate the LEON3 processor.

Programming and Debugging

.. zephyr:board-supported-runners::

Applications for the qemu_leon3 board configuration can be built and run in the usual way for emulated boards (see :ref:build_an_application and :ref:application_run for more details).

Flashing

While this board is emulated and you can't "flash" it, you can use this configuration to run basic Zephyr applications and kernel tests in the QEMU emulated environment. For example, with the :zephyr:code-sample:synchronization sample:

.. zephyr-app-commands:: :zephyr-app: samples/synchronization :host-os: unix :board: qemu_leon3 :goals: run

This will build an image with the synchronization sample app, boot it using QEMU, and display the following console output:

.. code-block:: console

    *** Booting Zephyr OS build zephyr-v2.4.0-27-g7b37fdd5303b  ***
    threadA: Hello World from qemu_leon3!
    threadB: Hello World from qemu_leon3!
    threadA: Hello World from qemu_leon3!
    threadB: Hello World from qemu_leon3!
    threadA: Hello World from qemu_leon3!
    threadB: Hello World from qemu_leon3!
    threadA: Hello World from qemu_leon3!
    threadB: Hello World from qemu_leon3!
    threadA: Hello World from qemu_leon3!
    threadB: Hello World from qemu_leon3!

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

Debugging

Refer to the detailed overview about :ref:application_debugging.