Can we perform DFU on NCP?

[NM_Z]

Hi team,

We are using Raytech nrf52840 dongles as NCP connected through USB to RaspPi compute module. We would like to upgrade the NCP application in the field using DFU.

We thought of doing this through Rasp Pi using nrfutil commands but we were unable to do so due to support not available for arm.

Is there a way to upgrade the application on NCP in the filed? If yes, kindly share the details.

Thanks

NM

[NM_Z]

Hi Jorgen,

I am unable to enter the Bootloader mode. Now I am trying with the nrf52840 dongle.

I have programmed "thread_ncp_ftd_usb_pca10056.hex" on our NCP dongles. As I press and hold the RESET button, the RED led is not blinking.

How should I proceed now?

Thanks

NM

[Jørgen Holmefjord]

You should not need to hold the reset button, it is sufficient to press and release it. Have you flashed the dongle through the SWD interface in the past? If you have then you most likely have erased the bootloader. Please see the nRF52840 Dongle Programming Tutorial for more details on how to recover from this.

[NM_Z]

Thank you. We could update the NCP firmware. Kindly close this ticket.

[NM_Z]

Hi Jorgen,

To upgrade the image on NCP using serial DFU, as you had mentioned that the NCP needs to be in bootloader mode.

We are trying to automate this whole process of NCP upgrade. basically we want to do an OTA DFU on NCP.

The above steps you had mentioned using nrfutil can only be done if someone press and release the reset button.

Is there any way to remove this manual button press and release?

Thanks, NM

[Jørgen Holmefjord]

Hi, 

You can do that with the DFU Trigger Library (USB). It looks like this should be supported in both OpenThread and in nrfutil, but I'm not certain that it is included in the Thread SDK NCP/CLI example projects for PCA10059. I did a test with nRF Connect programmer app and it was not able to trigger the Bootloader with the NCP firmware flashed to the dongle.

You should be able to add this to the SDK project directly, without going through rebuilding of the OpenThread libraries.

Best regards,
Jørgen