Controller hangs when I am trying to connect with Security feature

RE: Controller hangs when I am trying to connect with Security feature

Einar Thorsrud — Mon, 18 Aug 2025 07:44:50 GMT

Hi Chinmay,

That sounds good. An alternative approach is to see what happens, startign in fault.c. It is not unlikely that tthe issue is caused by a stack overflow, and if so perhaps start in mem_manage_fault(). An alterntative is to experimentally incrase stack sized, but I see there is very little RAM available so that has to be done carefully (you may need to optimize and cut back on stack and other buffer sizes elsewhere as much as possible).

RE: Controller hangs when I am trying to connect with Security feature

ChinmayDixit97 — Sun, 17 Aug 2025 13:30:27 GMT

Hello Einar,

This is happening when I am trying to connect the BLE on mobile app (nrf connect app), and expecting to enter the passkey on client what server has set. In my case, I have set it as 123456. The moment I try to connect, it hangs and got this call stack as mentioned in previous conversations. When I enable Security feature, then only its happening.

I will see what else I can get in core dump feature. I will let you know.

Thanks,

Chinmay

RE: Controller hangs when I am trying to connect with Security feature

Einar Thorsrud — Thu, 14 Aug 2025 14:22:56 GMT

Hi Chinmay,

I see. Without loggign we need to debug this differently to see what triggered the fault. First of all, can you say more about the circumstances when this happens? What happens before this? At what point during connection/pairing do this happen?

To understand more about the issues iself without logging, an option could be to generate a core dump and analyze it as shown here and here.

RE: Controller hangs when I am trying to connect with Security feature

ChinmayDixit97 — Tue, 12 Aug 2025 17:12:20 GMT

Hello Einar,

PFA zephyr folder and build log

devzone.nordicsemi.com/.../0284.zephyr.zip devzone.nordicsemi.com/.../3187.build_5F00_log.txt

I am using nrf52810 and due to lack of RAM, I am unable to turn on logs. But I have attached the image and in that, I am getting reason 35.
Can you help me with that?
Thanks for your support.
Chinmay

RE: Controller hangs when I am trying to connect with Security feature

Einar Thorsrud — Tue, 12 Aug 2025 12:08:05 GMT

Hi,

I do not see an obvious issue related to bonding here. Can you also upload the following?

generated .config file from <build_folder>/<application_name>/zephyr/
The full build log
UART/RTT log showing the hard fault you describe (please share the full log)