bootloader-settings for legacy dfu

[Youqun Sun]

Hi support team,

In order to make the application hex valid after programming in a bootloader enabled project, we can use bootloader-settings.

As for secure DFU, it's easy to generate bootloader settings hex with nrfutil tool.

But the bootloader settings hex from the same method doesn't work in legacy DFU.

Usually, we write memory at 0x3FC00 with value 1 to make it, but here I want to confirm that does legacy DFU support bootloader settings hex file or not? If support, how to generate it?

Thanks,

Youqun

[Rune Holmgren]

Hi,

Sorry for the late reply, we got way too many cases two weeks ago while on reduced staff and this accidentally got lost in the backlog

There is no tool for generating the settings page for the legacy DFU. The two options are:

• Create the page by hand by setting the values in accordance to the bootloader settings page as it is defined by bootloader_settings_t in bootloader_types.h.
• Flash a device with the bootloader and no application and add the application using DFU. Read out the values of this valid settings page and use those values.

Best regards,
Rune Holmgren

[Youqun Sun]

Hi Rune,

Thanks.

Can I convert this case to public?

Best Regards,

Youqun

[Rune Holmgren]

Hi,

The original poster (in this case you) is the only one who can make a case public. (This is to ensure users do not feel that Nordic employees revealed anything they considered secret.)

Best regards,
Rune Holmgren