nRF52840 standalone DFU

Wireless Connectivity Ultra-Wideband
1

The nRF52840_Developer_Manual_QM33SDK-1.02 in section 4.4.2 provides instructions for flashing nRF52840 firmware (QM33 UCI/CLI HEX file) via the nRF5340 onboard JLink debugger. My understanding of this DFU process is shown in the following diagram.

qm33120WDK1_dfu
qm33120WDK1_dfu2834×754 37.1 KB

This works for the DK but if designing a tag device with only the nRF52840 MCU what would be the flashing process? Assume it would be similar to flashing the nRF52840 dongle.

[Flash instructions for nRF52840 Dongle - Nordic Developer Academy]
(Flash instructions for nRF52840 Dongle - Nordic Developer Academy)

These instructions suggest that would need to merge the nRF5 bootloader and QM33 UCI/CLI HEX file and combine into a single SPI flash mapping.

So, is there documentation or a tutorial that details how standalone nRF52840 DFU would work?
Second, would it be possible to perform non-Jlink flashing of the nRF52840 on the QM33120WDK1?

2

Hi @wibaxb , this would be the same process as developing any firmware on nRF52 irrespective of using Qorvo UWB and is reviewed in this white paper from Nordic: Technical Documentation If you have further questions, I would recommend that you post your question on the Nordic Forum: https://devzone.nordicsemi.com/