How do I get the reset cause with nRF Connect SDK?

[MaLu]

Hi,

I am using an nRF9160/nRFConnect SDK 1.8.0/VSCode and my application uses MCUBoot and SPM. It is a "non secure" application.

I am trying to get a reset cause. 

hwinfo_get_reset_cause() just leads to a weak function that always returns -ENOSYS (= -1).

In my prj.conf I have enabled CONFIG_HWINFO=y, for this purpose. 

CONFIG_HWINFO_NRF=y outputs this warning: HWINFO_NRF (defined at drivers/hwinfo/Kconfig:31) was assigned the value 'y' but got the
value 'n'. Check these unsatisfied dependencies: (!TRUSTED_EXECUTION_NONSECURE).

 

I am kind of new to this whole secure/non-secure thing, so I am probably missing something fundamentally in this regard, so help to get the reset cause would be appreciated.

Thanks!

[MaLu]

Thank you very much for researching this, it is much appreciated!