nRF mesh serial example not working on nrf52840 dongle

[Nimish]

I have downloaded nRF SDK for Mesh version 2.2.0 and nRF5 SDK version 15.0. I am running examples(serial) from Mesh ver 2.2.0 and getting error such as no such file/directory. Also if you have hex file then you can paste here so that i can download. Also what are the steps I need to do after flashing the hex file. Do I need to power the dongle externally because if I connect the dongle to PC and open nRF connect software then the dongle enters bootloader mode and a new program is overwritten on it. So kindly tell me the steps post flashing and how should i connect my dongle to nRF connect Mesh mobile application.

[bjorn-spockeli]

Hi Nimish, 

The nRF SDK for Bluetooth Mesh v2.2.0 supports the nRF52840 DK, but there are no example that works out of the box with the nRF52840 Dongle, it should be possible to port the DK example to the Dongle, but it will require some modifications in the serial interface code as the nRF52840 Dongle does not have Segger OB chip that emulates a UART CDC Port. 

You will have to add the UART over USB functionality yourself using the USB driver in the SDK and add that to the mesh example. Alternativly you can use a usb to ttl serial cable to access the serial interface on the dongle and then just use the USB to power the device, but that sorts of defeats the purpose of using the dongle in the first place. 

As far as I know there are no plans for adding nRF52840 dongle support in the Mesh SDK. 

Best regards

Bjørn