Zephyr sample code for sending and receiving IPC messages

[snowuyl]

Does Nordic provide Zephyr sample code for sending Inter-Processor Communication (IPC) messages from app core and receiving response from net core?

[Hieu]

Hi snowuyl,

Yes, please take a look at the IPC service sample: https://developer.nordicsemi.com/nRF_Connect_SDK/doc/2.4.0/nrf/samples/ipc/ipc_service/README.html.

Hieu

[snowuyl]

Thanks for you suggesting ipc_service sample. I can build and flash image but I can't see any log messages of NET core.

Procedure to reproduce this issue is as follows.

1. cd D:\ncs\v2.3.0\nrf\samples\ipc\ipc_service
2. west build -b nrf5340dk_nrf5340_cpuapp
3. west flash
4. Lauching RTT Viwer and slecting NRF5340_XXAA_NET target device
5. RTT Viwer shows "LOG: RTT Viewer connected" but doesn't show any log messages.

[snowuyl]

[snowuyl]

[Hieu]

I don't have a nRF5340 hardware to test at the moment. Do you know if both cores were flashed when you run west flash? If you are not able to tell, please give me the log of west flash.

[snowuyl]

Thanks for your reply! I try to find command for generating west flag log file. But I can’t find command from docs.zephyrproject.org/.../build-flash-debug.html

[Hieu]

You just need to show me what the command line prints out immediately after west flash.

Please also check which log backend the network core is logging to. See in <network core child image build folder>/zephyr/.conf file, and search for all the CONFIG.*LOG_BACKEND configurations.