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IPC Service

Overview

IPC Service is an abstraction layer. It needs the corresponding backend registered for proper operation. You can use any IPC mechanism as a backend. In this sample, it is a multiple instance of RPMsg. This sample demonstrates how to integrate IPC Service with Zephyr.

Building the application for nrf5340dk_nrf5340_cpuapp

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

Open a serial terminal (for example Minicom or PuTTY) and connect the board with the following settings:

  • Speed: 115200

  • Data: 8 bits

  • Parity: None

  • Stop bits: 1

When you reset the development kit, the following messages (one for master and one for remote) will appear on the corresponding serial ports:

*** Booting Zephyr OS build v2.6.0-rc3-5-g026dfb6f1b71  ***

IPC Service [master 1] demo started

IPC Service [master 2] demo started
Master [1] received a message: 1
Master [2] received a message: 1
Master [1] received a message: 3
Master [2] received a message: 3

...
Master [1] received a message: 99
IPC Service [master 1] demo ended.
Master [2] received a message: 99
IPC Service [master 2] demo ended.
*** Booting Zephyr OS build v2.6.0-rc3-5-g026dfb6f1b71  ***

IPC Service [remote 1] demo started

IPC Service [remote 2] demo started
Remote [1] received a message: 0
Remote [2] received a message: 0
Remote [1] received a message: 2
Remote [2] received a message: 2
Remote [1] received a message: 4
Remote [2] received a message: 4
...
Remote [1] received a message: 98
IPC Service [remote 1] demo ended.
Remote [2] received a message: 98
IPC Service [remote 2] demo ended.

Building the application for bl5340_dvk_cpuapp

# From the root of the zephyr repository
west build -b bl5340_dvk_cpuapp samples/subsys/ipc/ipc_service
west debug
# From the root of the zephyr repository
west build -b bl5340_dvk_cpunet samples/subsys/ipc/ipc_service/remote
west debug

Open a serial terminal (for example Minicom or PuTTY) and connect to the board with the following settings on both serial ports:

  • Speed: 115200

  • Data: 8 bits

  • Parity: None

  • Stop bits: 1

When you reset the development kit after having flashed both the application and network core images, the following messages (one for master and one for remote) will appear on the corresponding serial ports:

*** Booting Zephyr OS build v2.7.0-rc1-103-ge19875c88916  ***

IPC Service [master 1] demo started

IPC Service [master 2] demo started
Master [1] received a message: 1
Master [2] received a message: 1
Master [1] received a message: 3
Master [2] received a message: 3

...
Master [1] received a message: 99
IPC Service [master 1] demo ended.
Master [2] received a message: 99
IPC Service [master 2] demo ended.
*** Booting Zephyr OS build v2.7.0-rc1-103-ge19875c88916  ***

IPC Service [remote 1] demo started

IPC Service [remote 2] demo started
Remote [1] received a message: 0
Remote [2] received a message: 0
Remote [1] received a message: 2
Remote [2] received a message: 2
Remote [1] received a message: 4
Remote [2] received a message: 4
...
Remote [1] received a message: 98
IPC Service [remote 1] demo ended.
Remote [2] received a message: 98
IPC Service [remote 2] demo ended.