Do Buttonless DFU without advertising 'DFUTarg'

RE: Do Buttonless DFU without advertising 'DFUTarg'

Vidar Berg — Mon, 14 Jun 2021 12:21:15 GMT

Hi Rj,

This should not be much different from what I did in the example I uploaded except you need to include the BLE transport and instead of the UART one.

RE: Do Buttonless DFU without advertising 'DFUTarg'

RJ Fang — Fri, 11 Jun 2021 18:08:46 GMT

Hi Vidar,

Actually I was thinking to use BLE to transport image during run time and then flash the image to bank 1 maybe. Do you have any suggestions on how to transport the image through run time and flash the image to bank 1. Or is there any functions to flash the data to a bank? Thanks!

RE: Do Buttonless DFU without advertising 'DFUTarg'

Vidar Berg — Mon, 07 Jun 2021 07:17:19 GMT

Hi Rj,

Unfortunately, there are no official examples for background DFU with BLE.

Best regards,

Vidar

RE: Do Buttonless DFU without advertising 'DFUTarg'

RJ Fang — Sun, 06 Jun 2021 15:31:02 GMT

Hi Vidar,

Thanks a lot for the information! I am still wondering does SDK 17.0 also has background DFU example?

Best,

RE: Do Buttonless DFU without advertising 'DFUTarg'

Vidar Berg — Wed, 02 Jun 2021 13:00:37 GMT

Hello,

It is possible. You can the integrate the existing DFU handling libraries from the Bootloader in you main application as I explained in this post: https://devzone.nordicsemi.com/f/nordic-q-a/46994/background-dfu-application-source-code. This will enable you to receive te FW image while running the main application. The main drawback with this approach is that only application updates will be supported. There are also no official SDK examples to demonstrate this feature.

[quote user=""]Because I don't want to lose connect when doing firmware updates.[/quote]

A system reset will still be required to let the bootloader activate the new application after an update.

Best regards,

Vidar