DFU central

[Jchristf]

I see this question asked before, but its 1+ year ago, so trying to see if there is some progress....

We have DFU working between your nrfConnect app and our nrf52840 peripherals, and its working great.

However, we would like to also run DFU from our nrf52840 based central gateway product.

Is there any example or guide we can start with?

Thanks,

Jacob.

[Hung Bui]

Hi Jchristf,

Unfortunately, we don't have new update on this matter. Our suggestion is to follow what we do in nRF Connect app on PC, or in the DFU library for Android or iOS. 

You can follow the protocol's documentation here: https://infocenter.nordicsemi.com/topic/sdk_nrf5_v16.0.0/lib_dfu_transport.html?cp=7_1_3_5_2

We do have example for DFU master via UART and SPI, but BLE is still missing. But it could be a good source for reference. Please have a look here.

[Duy]

Hello anh Hung Bui,

How about the firmware of the nRF52840-Dongle? Does it have DFU central in it? Or it uses different method? 

Thank you and best regards,

             Duy

[Hung Bui]

Hi Duy, 
The dongle doesn't have central firmware on it. When you use the dongle to connect to the PC and then do DFU from the PC to the nRF52 board , the nRF Connect application (or nrfutil.exe) act as the central DFU software. The dongle in this case is only the backend of the system. 

[Duy]

Hi anh Hung,

Thanks for the reply. I got it clear.

Best regards,

    Duy