nRF5340 netcore firmware version

RE: nRF5340 netcore firmware version

Riccardo Gaiati — Mon, 03 Nov 2025 13:10:52 GMT

Thanks a lot Vidar ! I am still on the 2.9.2. At this point i was thinking to declared some shared memory between app and net, at the boot up the net allocate a variable containing the version and the app will read it then.

regards

Riccardo

RE: nRF5340 netcore firmware version

Vidar Berg — Mon, 03 Nov 2025 08:29:57 GMT

Hi,

Yes correct, the appcore cannot access the netcore's flash memory. Another alternative assuming you're using BLE is to use the SDC_HCI_OPCODE_CMD_VS_ZEPHYR_READ_VERSION_INFO HCI command to get the version information for the Bluetooth controller. The HCI command can be sent using the hci_vs_sdc_zephyr_read_version_info() function if your SDK version includes this commit: https://github.com/nrfconnect/sdk-nrf/commit/635fa76ef9b2e677b816d4442c5879976d58e5e6

RE: nRF5340 netcore firmware version

Riccardo Gaiati — Sun, 02 Nov 2025 23:01:48 GMT

Hi Vidar,

sorry to pick up again this ticket. Just more question regarding the functions reported here https://docs.nordicsemi.com/bundle/nrf-apis-2.9.2/page/fw_info_bare_8h.html
For the nrf5340, these can only be called by the netcore, since the app core has not access to netcore memory space.

Thanks for your feedback

RE: nRF5340 netcore firmware version

Riccardo Gaiati — Fri, 16 Feb 2024 12:20:54 GMT

Thanks a lot Vidar !

RE: nRF5340 netcore firmware version

Vidar Berg — Thu, 15 Feb 2024 11:49:33 GMT

Hi Riccardo,

I must correct myself, the version number is not incremented automatically. Instead, it is defined by the 'CONFIG_FW_INFO_FIRMWARE_VERSION' value set in your 'hci_rpmsg' child image build, which defaults to '1'.

Best regards,

Vidar

RE: nRF5340 netcore firmware version

Riccardo Gaiati — Wed, 14 Feb 2024 08:36:08 GMT

Hi Vidor,

thanks for the prompt reply.

Who defines the values inside this data structure ? Who increase the version counter ?

Thanks again !

RE: nRF5340 netcore firmware version

Vidar Berg — Wed, 14 Feb 2024 07:48:32 GMT

Hi,

The MCUBoot image header where your '3.1.9+0' number is stored is not included the network core update since the nRF5340: Network core bootloader does not use this header. There is, however, a FW 'information structure' embedded within the netcore application image which includes a monotonically increasing version counter. This structure can be accessed with the fw_info_find() function.

Best regards,

Vidar