.. zephyr:code-sample:: openamp-rsc-table
:name: OpenAMP using resource table
:relevant-api: ipm_interface
Send messages between two cores using OpenAMP and a resource table.
Overview
********
This application demonstrates how to use OpenAMP with Zephyr based on a resource
table. It is designed to respond to the:
* `Linux rpmsg client sample <https://elixir.bootlin.com/linux/latest/source/samples/rpmsg/rpmsg_client_sample.c>`_
* `Linux rpmsg tty driver <https://elixir.bootlin.com/linux/latest/source/drivers/tty/rpmsg_tty.c>`_
This sample implementation is compatible with platforms that embed
a Linux kernel OS on the main processor and a Zephyr application on
the co-processor.
Building the application
*************************
Zephyr
-------
.. zephyr-app-commands::
:zephyr-app: samples/subsys/ipc/openamp_rsc_table
:goals: test
Linux
------
Enable SAMPLE_RPMSG_CLIENT configuration to build and install
the rpmsg_client_sample.ko module on the target.
Running the sample
*******************
Zephyr console
---------------
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.
Linux console
---------------
Open a Linux shell (minicom, ssh, etc.) and insert a module into the Linux Kernel
.. code-block:: console
root@linuxshell: insmod rpmsg_client_sample.ko
Result on Zephyr console on boot
--------------------------------
The following message will appear on the corresponding Zephyr console:
.. code-block:: console
***** Booting Zephyr OS v#.##.#-####-g########## *****
Starting application thread!
OpenAMP demo started
Remote core received message 1: hello world!
Remote core received message 2: hello world!
Remote core received message 3: hello world!
...
Remote core received message 100: hello world!
OpenAMP demo ended.
rpmsg TTY demo on Linux console
-------------------------------
On the Linux console send a message to Zephyr which answers with the "TTY <add>" prefix.
<addr> corresponds to the Zephyr rpmsg-tty endpoint address:
.. code-block:: console
$> cat /dev/ttyRPMSG0 &
$> echo "Hello Zephyr" >/dev/ttyRPMSG0
TTY 0x0401: Hello Zephyr
6202459d9f