OTA DFU Thread: board not found

[AS_Kalpa]

Hi all,

I'm working on this example: https://infocenter.nordicsemi.com/index.jsp?topic=%2Fsdk_tz_v3.2.0%2Fthread_example_dfu.html

I'm struggling on the server part, I have a nrf52840 board from Adafruit.

If I erase the board and power on with the PC I don't have a COM port opened so I can't perform the code 

nrfutil dfu thread -f -pkg app_dfu_package.zip -p COM3 --channel 11 --panid 43981 -r 4 -rs 5000 -a FF03::1 

and I receive back the "board not found" error.

I tried to flash the bootloader on the board and now I have an assigned COM

but the error is still the same.

Thanks for the help!

(nrfutil version: 5.2.0)

[Charlie]

AS_Kalpa said:

Can you explain better this please?

It means what it means. The connectivity firmware is something different. It is used by the nRF5 Bluetooth Low Energy GAP/GATT driver, not for DFU purposes.

AS_Kalpa said:

is it possibile to have source code for this kind of fw?

The source code of connectivity fw is located in nRF5_SDK\examples\connectivity\ble_connectivity. The connectivity firmware used for pc-ble-driver is a slightly modified version of the connectivity firmware from the SDK. You also must use the correct SDK version. You can find more suggetions from another ticket.

Charlie

[AS_Kalpa]

Hi all!

I'm working back on this problem.

I'm using something different from NRF52840-DK because we need a custom board to act as a DFU server, but the MCU is the same (NRF52840) so the solution MUST work also in our custom setup.

At the moment I have an Adafruit breakout board as a development kit (https://cdn-learn.adafruit.com/assets/assets/000/068/545/original/circuitpython_nRF52840_Schematic_REV-D.png?1546364754)

I'm able to flash the connectivity firmware (comparing Adafruit and DK memory the fw is the same) but probably I'm not assigning the right UART connection.

I'm using an external Jlink to flash the fw (--snr 801022847).

How can I set the right COM port? With the DK I used just the COM port that the board opens when you plug it in the PC.

Thanks,
Alessio

[Charlie]

Hi Alessio,

I am following a similar case from your colleague. I will reply to that one later.

Best regards,

Charlie