Serial output from nrf52840 using RIOT

[Matthew Bradbury]

Hi,

I'm trying to run some tests with the nrf52840 dongle using a simple RIOT application but do not seem be to be able to get any serial output.

I have tried with both usb and uart (making sure to add "USEMODULE += stdio_uart" to my Makefile in this case), but neither seem to work.

In the uart case, I have added a new board (https://github.com/MBradbury/RIOT/commit/51919e4e61d5eeb4a6f54ac4acbc0c299fa51052) and set the UART pins as per the documentation at https://gitlab.ethz.ch/tec/public/flocklab/wiki/-/wikis/Man/GpioAssignmentTargetAdapter. I also changed the spi and i2c pins to avoid overlap with SIG/INT pins.

Any ideas on why I am not getting any serial output?

Thanks,
Matthew