My application just hit the following fault randomly:
Exception occurred in Secure State ***** HARD FAULT ***** Fault escalation (see below) ***** BUS FAULT ***** Precise data bus error BFAR Address: 0x50008120 ***** Hardware exception ***** Current thread ID = 0x20028dac (sysworkq) Faulting instruction address = 0x319fe Fatal fault in ISR! Spinning...
I tracked back in the map file and that is inside the Nordic NRFX library in ipc_trace_handle, so I have no source code to help me decode what I might be doing wrong.
Specifically in my linking, ipc_trace_handle starts at 0x3180c, so that is 0x1f2 bytes after the entry. Here's a snippet for reference from the listing file:
319f8: b109 cbz r1, 319fe <ipc_trace_handle+0x1f2> 319fa: 2100 movs r1, #0 319fc: 7011 strb r1, [r2, #0] 319fe: 68a5 ldr r5, [r4, #8] 31a00: 2d00 cmp r5, #0 31a02: d039 beq.n 31a78 <ipc_trace_handle+0x26c> 31a04: f04f 0c00 mov.w ip, #0
Please, if someone from Nordic who has the source code for NRFX could help me understand what is being referenced in that area and give me a hint what might be wrong, I would really appreciate it.
