RTOS/CC2640R2F: Exception Handler causes Bluetooth connection problems

Part Number:CC2640R2F

Tool/software: TI-RTOS

Hi all,

I've encountered a mysterious issue on a CC2640R2F project. When I add an exception handler, I cannot connect as easily to my master device as before. The master device is a Beelink GT1.

Which is weird is that I have two types of Beelink GT1 and I have the issue with only one of them, the B706 with 32Gb. I do not have the issue with the A912 with 16Gb.

Here's how I add the exception handler in cc2640_r2_csdk.cfg :

m3Hwi.enableException = false;
m3Hwi.excHookFunc = "&execHandlerHook";

and in main :

#include <ti/sysbios/family/arm/m3/Hwi.h>
volatile uintptr_t *excPC = 0;
volatile uintptr_t *excCaller = 0;

void execHandlerHook(Hwi_ExcContext *ctx)
{
excPC = ctx->pc; // Program counter where exception occurred
excCaller = ctx->lr; // Link Register when exception occurred

while(2);
}

Does anyone has an idea what causes the issue and how to had the exception handler without causing the issue?

Thanks in advance,

Sylvain