nRF9160 dk get hardware id

RE: nRF9160 dk get hardware id

Martin Lesund — Tue, 06 Oct 2020 12:05:40 GMT

Hi Vlad,

I would recommend using the IMEI instead, since that is also unique for each nRF9160 SiP.
This can be gathered from the AT command AT+CGSN.

Since the FICR structure (NRF_FICR_S) structure is secure only.

Any access to this region must be done using a trustzone call.

Add the CONFIG_SPM_SECURE_SERVICES=y into your prj.conf

and use the spm_request_read to read FICR.
You can use the Secure Services sample as reference.

RE: nRF9160 dk get hardware id

Vlad T — Tue, 06 Oct 2020 11:23:15 GMT

Hi Martin,

Thank you for your quick reply.

I want to read the DEVICEID register from the FICR peripheral. Unfortunately for me the ncs defines only a secure definition for the FICR registers so it can't be read by a non secure firmware.

Is there a way to get the information form DEVICEID? If not is there another unique id register that I can read?

RE: nRF9160 dk get hardware id

Martin Lesund — Tue, 06 Oct 2020 11:06:56 GMT

Hi Vlad,
What do you mean by hardware ID?

If you mean the information you can get by issuing the AT command AT%HWVERSION, then yes that is possible to get.
Just open a AT socket and issue the command in your FW that runs in the non-secure area.