Debugging crashes after a few lines for every programm, even though pure execution works without issues

RE: Debugging crashes after a few lines for every programm, even though pure execution works without issues

gdl — Thu, 27 Jun 2024 09:47:34 GMT

Thank you

RE: Debugging crashes after a few lines for every programm, even though pure execution works without issues

Charlie — Tue, 25 Jun 2024 12:25:04 GMT

Hi,

I can repeated this issue if enable Optimize for debugging "-Og" option for building firmware then start Debug and run step over.

The device will keep rebooting with following fatal error from TF-M debugging port.

[Sec Thread] Secure image initializing!
Booting TF-M v2.0.0
[DBG][Crypto] Initialising Mbed TLS 3.5.2 as PSA Crypto backend library... complete.
FATAL ERROR: Reserved Exception 0x0000000C
[Sec Thread] Secure image initializing!
Booting TF-M v2.0.0
[DBG][Crypto] Initialising Mbed TLS 3.5.2 as PSA Crypto backend library... complete.
FATAL ERROR: Reserved Exception 0x0000000C

I have reported this error to our TF-M experts to see if this is a bug or not and will give you an update later.

Best regards,

Charlie

RE: Debugging crashes after a few lines for every programm, even though pure execution works without issues

gdl — Mon, 24 Jun 2024 15:04:55 GMT

Thanks for your reply.

I still have the same problem when running the uploaded project.
(I decompressed the zip and opened it using Open Folder. For debugging i built it for "nrf9161dk_nrf9161_ns" with "Optimize for debugging (-Og)" as Optimization level.)
(For some projects debugging works somewhat (for many lines, but not until the end) when additionally adding the compiler-flags in the CMakeLists.txt, but that doesn't seem to make a difference for this project.)

The serial terminal (when debugging the zipped project past first line) reads

*** Booting nRF Connect SDK v3.5.99-ncs1-1 ***
Begin
*** Booting nRF Connect SDK v3.5.99-ncs1-1 ***
Begin
*** Booting nRF Connect SDK v3.5.99-ncs1-1 ***
Begin

RE: Debugging crashes after a few lines for every programm, even though pure execution works without issues

Charlie — Fri, 21 Jun 2024 08:38:59 GMT

Hi,

It is common to see this kind of crash when you debug with time sensitive functions like BLE/Cellular IoT communication, but what you have seen for this hello world sample is unusual.

I did a test with your codes on my setup, and I can successfully run it without crash. Just share my whole project here, could you test the following project and build for nrf9161dk_nrf9161_ns?

devzone.nordicsemi.com/.../hello_5F00_world_5F00_debug.zip

Best regards,

Charlie