How to test examples\dfu\secure_bootloader\pca10040_uart_debug

[great-master]

I build the example and download to PCA10040,but there no log print in RTT, and I debug in keil mdk, I found the program does not step into main function.

How to run this example?Does there have any document to describle about usart DFU?

[great-master]

Is there no way to debug the bootloader separately?

[great-master]

I have have read many documents in the website,But I'm not find how to flash mbr, can you give me a link?

[Hung Bui]

You just flash it the same way as you flash the softdevice or bootloader or application. 

You can use nRF Connect - Programmer application on PC or use nrfjprog.exe command line tool to flash the hex file. 

To debug the bootloader you can flash the debug version and step through the code (only after you flash the MBR)