615fcab94a
This sample code is currently not yet read for HWMv2 and sysbuild. Skip this test for now and have a fix later. Make sure sample code uses HWMv2 for board naming convention. Signed-off-by: Sylvio Alves <sylvio.alves@espressif.com>
56 lines
2.3 KiB
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56 lines
2.3 KiB
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.. zephyr:code-sample:: ipm-esp32
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:name: IPM on ESP32
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:relevant-api: ipm_interface
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Implement inter-processor mailbox (IPM) between ESP32 APP and PRO CPUs.
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Overview
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********
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This simple example can be used with multicore ESP32 Soc, and demonstrates
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the software intercore messaging mechanism to be used in AMP applications.
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ESP32 has two CPU named APP and PRO, in this simple example PRO send a
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message to the APP using the IPM driver, and waits for the APP response
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message and prints its contents on console.
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ESP32 intercore messaging has up two four channels, the 0 and 1 are
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reserved for BT and WIFI messages, and channels 2 and 3 is free to
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any application, each channel supports up to 64 bytes of data per
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message, so high level protocol is responsible to fragment larger
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messages in chunks of 64 bytes.
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Building and Running the Zephyr Code
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************************************
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Build the ESP32 IPM sample code as follows:
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.. zephyr-app-commands::
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:zephyr-app: samples/drivers/ipm/ipm_esp32
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:board: esp32_devkitc_wroom/esp32/procpu
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:goals: build
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:compact:
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Sample Output
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*************
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To check the output of this sample, run ``west espressif monitor`` or any other serial
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console program (e.g., minicom, putty, screen, etc).
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.. code-block:: console
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*** Booting Zephyr OS build v3.3.0-rc3-38-gc9225e4365b9 ***
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PRO_CPU is sending a fake request, waiting remote response...
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PRO_CPU received a message from APP_CPU : APP_CPU: This is a response
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PRO_CPU is sending a fake request, waiting remote response...
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PRO_CPU received a message from APP_CPU : APP_CPU: This is a response
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PRO_CPU is sending a fake request, waiting remote response...
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PRO_CPU received a message from APP_CPU : APP_CPU: This is a response
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PRO_CPU is sending a fake request, waiting remote response...
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PRO_CPU received a message from APP_CPU : APP_CPU: This is a response
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PRO_CPU is sending a fake request, waiting remote response...
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PRO_CPU received a message from APP_CPU : APP_CPU: This is a response
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PRO_CPU is sending a fake request, waiting remote response...
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PRO_CPU received a message from APP_CPU : APP_CPU: This is a response
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PRO_CPU is sending a fake request, waiting remote response...
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PRO_CPU received a message from APP_CPU : APP_CPU: This is a response
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