KL03Z enters unknown state

[gnichimohamed]

Hello

I have a custom pcb made out of KL03z microcontroller. I was debugging my application quite ok then suddenly the board is not debuggable anymore. I am using segger jlink to debug my app, flashing works ok but the program starts not in main.

As soon as i pause the debugging, things get weird.

Thanks for any help

[DavidS]

Hi Gnichi,

Try removing all breakpoints and try again.

https://mcuoneclipse.com/2014/10/11/failed-to-debug-with-gdb-breakpoints-or-expressions-on-non-exist...

Regards,

David

[xiangjun_rong]

Hi,

Maybe reloading the KDS tools/powering off/on the chip can make it work.

Regards

xiangjun Rong

[gnichimohamed]

Thank you guys for the answers, it seems that weird issues keep coming.

After two days leaving the boards, they are back working normally, i don't know what happened

[gnichimohamed · Accepted solution]

it turned out to be an nmi_b interrupt that's causing  the problem. I had one pot at that pin, if the pot is low, that will cause an interrupt which stops everything. I had to disable the nmi interrupt from flash.