Unable to Program nRF52840 Dongle with any App in nRF Connect

RE: Unable to Program nRF52840 Dongle with any App in nRF Connect

Einar Thorsrud — Wed, 08 Sep 2021 10:57:07 GMT

I see. I am not able to explain or reproduce it, so unfortunately I cannot suggest a fix for now. It is good you have a effective workaround by removing and re-inserting the dongle, though I understand it is not ideal.

RE: Unable to Program nRF52840 Dongle with any App in nRF Connect

Mathnitrof — Tue, 07 Sep 2021 13:02:43 GMT

I don’t use a USB hub, the dongle connected to the PC directly.

RE: Unable to Program nRF52840 Dongle with any App in nRF Connect

Einar Thorsrud — Mon, 06 Sep 2021 11:42:39 GMT

Hi,

I am glad to see your solved the initial problem.

Regarding the RSSI viewer I have unfortunately not been able to reproduce the issue where you have to power-cycle it after programming it with the appropriate firmware. It should reset automatically and start surveying the BLE channels.

Do you use a USB hub or is the dongle connected to the PC directly? If using a hub, does it help to plug it into the PC directly?

RE: Unable to Program nRF52840 Dongle with any App in nRF Connect

Mathnitrof — Sat, 04 Sep 2021 18:38:55 GMT

Hi Nordic,

I eventually got it working. I completely Uninstalled the driver by checking the “Delete the driver software for this device”, to make sure that there was no remaining file that could cause any problem…

I don’t recall what was the driver’s name but here is a screenshot of the dialog.. (while uninstalling a driver in Device Manager):

Then, there is a driver that you can get here(the executable):

https://github.com/NordicSemiconductor/pc-nrfconnect-launcher/tree/master/build/drivers

Now it is working/programming correctly.

However, there is still something annoying. Bluetooth Low Energy works perfectly, but when flashing RSSI Viewer, once flash complete, I must remove the Dongle and re-plug it to make it run correctly.

I get the following error: "Error while setting up device EA4A9FE62ECB: Timeout while waiting for device EA4A9FE62ECB to be attached and enumerated"

I looks like the Dongle is not able to get out of DFU mode once flash is completed.

RE: Unable to Program nRF52840 Dongle with any App in nRF Connect

Mathnitrof — Sat, 04 Sep 2021 18:28:24 GMT

On the Same "problematic" laptop. I have a Virtual machine running on VMware. I was able to install nRF Connect on it and I have more success than using the software directly on my laptop.

It is a little more annoying because I have to unplug and re-plug the Dongle every time I change App.

This confirm that the USB port are ok