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zephyr/samples/drivers/ipm/ipm_esp32
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Marek Matej 3776402f40 boards: xtensa: esp32 board split 
Remove virtual esp32 board and replace it with the
real word boards:

- esp32_devkitc_wroom
- esp32_devkitc_wrover (with PSRAM option)

Signed-off-by: Marek Matej <marek.matej@espressif.com>
2023-07-25 18:12:33 +02:00
..
boards boards: xtensa: esp32 board split 2023-07-25 18:12:33 +02:00
ipm_esp32_net samples, tests, boards: Switch main return type from void to int 2023-04-14 07:49:41 +09:00
src samples, tests, boards: Switch main return type from void to int 2023-04-14 07:49:41 +09:00
CMakeLists.txt samples: ipm_esp32: use net core source from build ouput 2023-02-16 21:30:35 +09:00
prj.conf
README.rst samples: ipm_esp32: use net core source from build ouput 2023-02-16 21:30:35 +09:00
sample.yaml boards: xtensa: esp32 board split 2023-07-25 18:12:33 +02:00

README.rst 

.. _ipm_esp32:

ESP32 Soft-IPM example
######################

Overview
********
This simple example can be used with multicore ESP32 Soc, and demonstrates
the software intercore messaging mechanism to be used in AMP applications.

ESP32 has two CPU named APP and PRO, in this simple example PRO send a
message to the APP using the IPM driver, and waits for the APP response
message and prints its contents on console.

ESP32 intercore messaging has up two four channels, the 0 and 1 are
reserved for BT and WIFI messages, and channels 2 and 3 is free to
any application, each channel supports up to 64 bytes of data per
message, so high level protocol is responsible to fragment larger
messages in chunks of 64bytes.

Building and Running the Zephyr Code
************************************

Build the ESP32 IPM sample code as follows:

.. zephyr-app-commands::
   :zephyr-app: samples/drivers/ipm/ipm_esp32
   :board: esp32
   :goals: build
   :compact:

Sample Output
*************

To check the output of this sample, run ``west espressif monitor`` or any other serial
console program (e.g., minicom, putty, screen, etc).

.. code-block:: console

   *** Booting Zephyr OS build v3.3.0-rc3-38-gc9225e4365b9  ***
   PRO_CPU is sending a fake request, waiting remote response...
   PRO_CPU received a message from APP_CPU : APP_CPU: This is a response
   PRO_CPU is sending a fake request, waiting remote response...
   PRO_CPU received a message from APP_CPU : APP_CPU: This is a response
   PRO_CPU is sending a fake request, waiting remote response...
   PRO_CPU received a message from APP_CPU : APP_CPU: This is a response
   PRO_CPU is sending a fake request, waiting remote response...
   PRO_CPU received a message from APP_CPU : APP_CPU: This is a response
   PRO_CPU is sending a fake request, waiting remote response...
   PRO_CPU received a message from APP_CPU : APP_CPU: This is a response
   PRO_CPU is sending a fake request, waiting remote response...
   PRO_CPU received a message from APP_CPU : APP_CPU: This is a response
   PRO_CPU is sending a fake request, waiting remote response...
   PRO_CPU received a message from APP_CPU : APP_CPU: This is a response