.. zephyr:code-sample:: mbox :name: MBOX :relevant-api: mbox_interface Perform inter-processor mailbox communication using the MBOX API. Overview ******** This sample demonstrates how to use the :ref:`MBOX API `. Building and Running ******************** The sample can be built and executed on boards supporting MBOX. Building the application for nrf5340dk_nrf5340_cpuapp ***************************************************** .. zephyr-app-commands:: :zephyr-app: samples/drivers/mbox/ :board: nrf5340dk_nrf5340_cpuapp :goals: debug :west-args: --sysbuild Open a serial terminal (minicom, putty, etc.) and connect the board with the following settings: - Speed: 115200 - Data: 8 bits - Parity: None - Stop bits: 1 Reset the board and the following message will appear on the corresponding serial port, one is the application (APP) core another is the network (NET) core: .. code-block:: console *** Booting Zephyr OS build zephyr-v3.1.0-2383-g147aee22f273 *** Hello from APP Pong (on channel 0) Ping (on channel 1) Pong (on channel 0) Ping (on channel 1) Ping (on channel 1) Pong (on channel 0) Ping (on channel 1) Pong (on channel 0) Ping (on channel 1) ... .. code-block:: console *** Booting Zephyr OS build zephyr-v3.1.0-2383-g147aee22f273 *** Hello from NET Ping (on channel 0) Pong (on channel 1) Ping (on channel 0) Pong (on channel 1) Building the application for the simulated nrf5340bsim ****************************************************** .. zephyr-app-commands:: :zephyr-app: samples/drivers/mbox/ :host-os: unix :board: nrf5340bsim_nrf5340_cpuapp :goals: build :west-args: --sysbuild Then you can execute your application using: .. code-block:: console $ ./build/zephyr/zephyr.exe -nosim # Press Ctrl+C to exit You can expect a similar output as in the real HW in the invoking console.