bt_enable() error: BUS FAULT Instruction bus error

[Joao Colombari]

Hi,

I am trying to implement a ble module in a fall detection application. I added a ble_service based on the BLE fundamentals course lesson 3, which works just fine alone, but when added to the project, the code apparently builds fine for both cores, but flashing gives me this:

*** Booting nRF Connect SDK v2.9.0-7787b2649840 ***
*** Using Zephyr OS v3.7.99-1f8f3dc29142 ***
[00:00:00.587,127] <inf> BLE_MODULE: Starting BLE module

[00:00:00.587,127] <inf> BLE_MODULE: Callbacks okay

[00:00:00.588,012] <err> os: ***** BUS FAULT *****
[00:00:00.588,012] <err> os:   Instruction bus error
[00:00:00.588,012] <err> os: r0/a1:  0x00000000  r1/a2:  0x0000003c  r2/a3:  0x00000000
[00:00:00.588,043] <err> os: r3/a4:  0x01460abb r12/ip:  0x48009808 r14/lr:  0x00001b97
[00:00:00.588,043] <err> os:  xpsr:  0x01000000
[00:00:00.588,043] <err> os: Faulting instruction address (r15/pc): 0x01460aba
[00:00:00.588,073] <err> os: >>> ZEPHYR FATAL ERROR 27: Unknown error on CPU 0
[00:00:00.588,104] <err> os: Current thread: 0x20000710 (unknown)
[00:00:00.672,302] <err> os: Halting system

Any idea?? 

Im attaching the project in this issue. 

Thanks!!

fall_detection.zip

[dejans]

Hi João,

Thank you for additional information.

Can you try to add debug optimizations -DCONFIG_DEBUG_OPTIMIZATIONS=y and -DCONFIG_DEBUG_THREAD_INFO=y and try to use addr2line tool for checking where the error occurred? You could potentially also use Thread Analyzer for tracking thread information.

Best regards,
Dejan

[Jakob Ruhe]

.. and perhaps also set a breakpoint in `z_fatal_error()` and use your debugger to print a stack trace when you end up there.