RE: mcumgr relay

Benjamin — Thu, 16 May 2024 16:51:45 GMT

This is great info, thank you!

RE: mcumgr relay

Amanda Hsieh — Thu, 16 May 2024 14:10:00 GMT

Hi,

The mcumgr does not directly support relay functionality. However, The Zephyr Project supplies mcumgr as a SMP Client. The mcumgr library can help with receiving the images and writing them over Bluetooth Low Energy, UART, and UDP over IP.

To communicate with MCUmgr, you need an SMP Client. An implementation is available in NCS. It is demonstrated in this sample: Bluetooth: Central SMP Client.

If you want to work with NCS's built-in solution, your nRF9160 module needs to support an SMP Client. You might be able to port it from NCS's implementation.

You can use the SMP Server Sample on the nRF52833 Peripheral device, swapping out the transport layer from Serial to Bluetooth. This sample includes several Kconfig fragments to enable different MCUmgr transport methods, such as overlay-serial.conf for UART transport.

My colleague, Hellesvik, provides some such samples here: https://github.com/hellesvik-nordic/samples_for_nrf_connect_sdk/tree/main/bootloader_samples .

Please note that these samples on Hellesvik's repository are unofficial, not tested, and only maintained during contributors' free time.

Regards,
Amanda H.