SPM with custom k_sys_fatal_error_handler

[MBeonas]

In our NRF9160 application, we do not have a UART available and have to implement other means of logging crashes.

We have written our own k_sys_fatal_error_handler but it seems that it is not called upon a null pointer dereference. Instead the implementation from fatal_error.c in the NRF SDK was called.

After adding

CONFIG_RESET_ON_FATAL_ERROR=n

to spm.conf, the weakly referenced standard implementation of k_sys_fatal_error_handler in fatal.c was used.

How can we make sure that our error handler is called upon a secure fault exception?

Best Regards

Martin

[Hakon]

Hello,

where is your implementation of the k_sys_fatal_error_handler located? Is it in main.c?

[MBeonas]

No, it is located in another source file. The other source file has other functions in it which are called so I am sure that it is linked.