nrfutil: read DEVICEID from FICR

RE: nrfutil: read DEVICEID from FICR

Kenneth — Tue, 08 Apr 2025 13:26:24 GMT

I do believe the following will work for the nRF54L from next release:
nrfutil device x-filedump --ficr dump.hex --traits devkit

If not, let me know.

Kenneth

RE: nrfutil: read DEVICEID from FICR

JordanYates — Tue, 08 Apr 2025 12:57:41 GMT

Of course, but there is plenty of other information (including the UICR address) that is exposed through the core-info command that could also be obtained by "checking the datasheet". I note you only linked the docs for one SoC, presumably because linking them all would be annoying to collate? Perhaps as annoying as needing to check them all to find offsets manually.

The FICR address was also possible to determine programmatically with the old nrfjprog based tooling.

RE: nrfutil: read DEVICEID from FICR

Kenneth — Tue, 08 Apr 2025 12:51:34 GMT

Hello,

--direct shouldn't be necessary to read FICR, this is a bug which will be fixed in the next release.

[quote user="JordanYates"]The rest of the problem still stands, the tool does not provide the FICR address for a SoC, or the DEVICEID offset within FICR, both of which vary between device families.[/quote]

I guess you can always check the datasheet?
https://docs.nordicsemi.com/bundle/ps_nrf54L15/page/ficr.html#d862e42
https://docs.nordicsemi.com/bundle/ps_nrf54L15/page/ficr.html#register.INFO.DEVICEID

Kenneth

RE: nrfutil: read DEVICEID from FICR

JordanYates — Tue, 08 Apr 2025 01:53:37 GMT

Thanks Leo, the ``--direct`` argument resolves the later problem of being unable to read the FICR registers at all.

The rest of the problem still stands, the tool does not provide the FICR address for a SoC, or the DEVICEID offset within FICR, both of which vary between device families.

RE: nrfutil: read DEVICEID from FICR

leox — Tue, 08 Apr 2025 01:49:58 GMT

Hi Jordan,

This command seems to work "nrfutil device x-read --x-family nrf54l --address 0xffc304 --width 32 --direct"

0x00FFC304: 19DB9AB4 |....|