Thanks for your help.
I damaged the kit unwittingly. So, I've to wait for the repair.
I'll try your solution when it alright.
Best regards,
Mike.
Hi @MikeTaDien :
It seems a debug tool issue, one similar case discussed here.
https://forum.segger.com/index.php/Thread/1345-WARNING-RESET-pin-15-high-but-should-be-low/
can you use other debug tool such as MCU LINK PRO, or LPC-LINK2?
Regards
Daniel