Once the raspberry pi is set up, you can plug the nRF52840 dongle into it and get going with the rest of it. For an actual thread device, I've got an nRF5340 development board from Nordic. However I haven't got as far as checking whether the radio on the nRF52840 MDK dongle is ...
to operate in HCI-UART (HCI only driver) mode, and Raspberry PI4 to operate in host mode. On the host side, theversion 5.50 BlueZis installed. The boards are connected via UART interface, at 921600Kb/s speed. After connecting and initializing nRF52840 using the hciattach command, the...