Debugging Adafruit feather nrf52840

[Emily]

Hello,

I have a couple of Adafruit Feather nrf52840 express devices and I want to set up a small openthread network. As far as setting up a simple network where all the devices have a basic cli-ftd flashed onto them everything works. But I want to extend it so that when I press the button on the feather device it sends a multicast udp message. I found a tutorial by openthread to do something similar and alternated the code a little bit. My code is building, and I can also flash the adafruit feather device.

My problem is: When I plug the feather device with a usb cable into my computer it is not recognize.

Is there any way I can debug the code I wrote or can anybody help me with this problem?

Best regards,

Emily

[Amanda Hsieh]

Hi, 

I believe it needs a Segger J-Link debugger or the onboard debugger on DK to debug Adafruit Feather nrf52840. Please contact https://forums.adafruit.com/ on how to set up Feather nrf52840 express on PC. 

Regards,
Amanda

[Emily]

Yes that's what I use to flash. My problem is after flashing if I plug it in via usb it is not recognized anymore.

[Amanda Hsieh]

Hi, 

It depends on whether the flashed image supports USB or not. 

I assume it uses the native USB port of the nRF52840, so you would have to flash an application that utilizes the USB port in order for it to enumerate on the PC. Since you say it works with the CLI-FTD application, I assume you then used the one with USB transport. If you created a new application based on the tutorial, this might not implement USB support (I did not read through it). What did you flash to the board? Does it enable the USB?

-Amanda