Adafruit nRF52840 Feather Express USB Serial port not recognized

[senneverhaegen]

Hi,

I'm trying out an application from the NRF SDK where I need to connect via putty or something similar to the serial port.

However, the port is not showing up (normally it should be /dev/ttyACM0)

My setup is as follows:

• NRF SDK 15.3.0
• Ubuntu 20.04.04 LTS
• Adafruit nRF52840 Feather Express
• flash_fds example application

The only time my device is recognized is when I upload the Adafruit Bootloader and run an application using Arduino IDE.

However, I want to use the secure bootloader from the NRF SDK or none at all.

[Kenneth]

Hello,

I recommend to order yourself an nRF52840-DK, then you get a debugger/programmer, and there is also an UART to USB bridge that you can use for logging to a PC. The cost is for instance 49USD from digikey: https://www.digikey.no/en/products/detail/nordic-semiconductor-asa/NRF52840-DK/8593726 

The examples will then also work our of the box.

Kenneth

[senneverhaegen]

Hi,

This is not the response I had hoped for but thanks anyway.