Getting serial port communication on nRF52840DK to work via USB

[alfiedouglas]

HI, I'm creating an IoT system, and planning to use THREAD to communicate between devices. Each device is running on a raspberry pi but I plan to use nRF52840DKs to do all the communication of the IoT network. So I plan for the raspberry pis and nRFs to communcate using serial port communication via USB and for the nRFs to relay on messages through the THREAD network.

To learn how do do this I have tried to run the usb_uart_bridge example (developer.nordicsemi.com/.../README.html), however as soon as I plug the nRF to my PC (running Ubuntu 20.04.1 LTS) I get a bus fault as shown below:

I am not sure what this error means and how to debug it?

Any help is greatly appreciated! 

[Jørgen Holmefjord]

Hi,

This sample is intended for the nRF52840 on the Thiny:91, for converting HW UART messages to USB CDC packets. It does not sound like the best starting-point for your use-case.

Did you build the sample for the thingy91_nrf52840 target, or for the nrf52840dk_nrf52840?

Best regards,
Jørgen

[alfiedouglas]

Ah I've built it on the nrf52840dk_nrf52840, how could I get started with serial port communication on the nrf52840dk_nrf52840?