nRF52810 SDK15.3.0 add NUS(ble_app_uart) to ble_app_buttonless_dfu can not bootup



the original secure_bootloader and buttonless_dfu works fine.


and nRF5_SDK_15.3.0_59ac345\examples\ble_peripheral\ble_app_buttonless_dfu\pca10040e

so I start to porting NUS and UART/FIFO module into ble_app_buttonless_dfu(leave secure bootloader untouched), but fails:

it can not boot up to ble_app_buttonless_dfu.

Here I attach my project ble_app_buttonless_dfu.7z

Mostly, I add uart related files and some functions in main.c, even have not init NUS service.

Would you share some suggestion?

Or should I add DFU into ble_app_uart example, would be easier?