IPC service: icmsg backend

Overview

This application demonstrates how to use IPC Service and the icmsg backend with Zephyr. It is designed to demonstrate how to integrate it with Zephyr both from a build perspective and code.

Building the application for nrf5340dk_nrf5340_cpuapp

# From the root of the zephyr repository
west build -b nrf5340dk_nrf5340_cpuapp --sysbuild samples/subsys/ipc/ipc_service/icmsg
west debug

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 host another is remote:

*** Booting Zephyr OS build zephyr-v3.2.0-323-g468d4ae383c1  ***
[00:00:00.415,985] <inf> host: IPC-service HOST demo started
[00:00:00.417,816] <inf> host: Ep bounded
[00:00:00.417,877] <inf> host: Perform sends for 1000 [ms]
[00:00:01.417,114] <inf> host: Sent 488385 [Bytes] over 1000 [ms]
[00:00:01.417,175] <inf> host: Wait 500ms. Let net core finish its sends
[00:00:01.917,266] <inf> host: Stop network core
[00:00:01.917,297] <inf> host: Reset IPC service
[00:00:01.917,327] <inf> host: Run network core
[00:00:01.924,865] <inf> host: Ep bounded
[00:00:01.924,896] <inf> host: Perform sends for 1000 [ms]
[00:00:02.924,194] <inf> host: Sent 489340 [Bytes] over 1000 [ms]
[00:00:02.924,224] <inf> host: IPC-service HOST demo ended

*** Booting Zephyr OS build zephyr-v3.2.0-323-g468d4ae383c1  ***
[00:00:00.006,256] <inf> remote: IPC-service REMOTE demo started
[00:00:00.006,378] <inf> remote: Ep bounded
[00:00:00.006,439] <inf> remote: Perform sends for 1000 [ms]
[00:00:00.833,160] <inf> sync_rtc: Updated timestamp to synchronized RTC by 1)
[00:00:01.417,572] <inf> remote: Sent 235527 [Bytes] over 1000 [ms]
[00:00:01.417,602] <inf> remote: IPC-service REMOTE demo ended
*** Booting Zephyr OS build zephyr-v3.2.0-323-g468d4ae383c1  ***
[00:00:00.006,256] <inf> remote: IPC-service REMOTE demo started
[00:00:00.006,347] <inf> remote: Ep bounded
[00:00:00.006,378] <inf> remote: Perform sends for 1000 [ms]
[00:00:01.006,164] <inf> remote: Sent 236797 [Bytes] over 1000 [ms]
[00:00:01.006,195] <inf> remote: IPC-service REMOTE demo ended