Problem using DA14681 ble sdk with custom OS

Hello,

I am posting in this forum because I could not find any section dedicated to the DA14681.
I am currently testing a DA14681 devkit and have been trying to integrate the ble code provided in the SDK with a different operating system than the default provided (FreeRTOS). I am using a copy of a ble_demo project provided in the SDK built for QSPI debug.
During my attempts to initialize and use the bluetooth, my code has been constantly crashing in functions which, from what I have been able to debug, come from the ble_stack library (libble_stack). By looking around in the SDK, I found only the binary for this library and no sources, so I am currently stuck in the debug process.

Would it be possible to get some more information about this library or its API? Or maybe help regarding some appropriate debug methods?

Thank you and best regard,
Andrei