I'm trying to run uart secured bootloader example in folder: @NRF5_SDK\examples\dfu\secure_bootloader\pca10040_uart_debug
but it doesn't work.

My setting is:

base on the infocenter ducument:

Could you tell me how to solve this problem,
I'm using:
nRF52832.
Segger Embedded Sudio V5.68
NRF5 SDK 15.3.0
GNU Tools for ARM Embedded Processor 7-2018-q2

