RE: How to update the application with the debugger instead of using the DFU with a softdevice present?

rico — Tue, 02 Feb 2021 14:14:50 GMT

Thanks! That should do the trick.

RE: How to update the application with the debugger instead of using the DFU with a softdevice present?

Einar Thorsrud — Tue, 02 Feb 2021 14:11:54 GMT

Hi,

The bootlaoder will see that the CRC of the application has changed, and enter DFU mode instead of starting the application. So to fix this you have several options:

The "proper", which is to generate a valid DFU settings page as described here, and program that together with the application every time.
Or modify the bootloader so that it skips the CRC check. This is more convenient when debugging. To do this you need to modify the bootloader in components\libraries\bootloader\nrf_bootloader.c so that crc_on_valid_app_required() alwas returns false.
Or simply test/debug without programming a bootloader.