I had the nrf5340 DK working for a few weeks now, and while working with SSD1309 OLED peripheral, was trying out a simple display application. Couldn't get the display device initialized, but started Getting the following error:
Error: One or more batch tasks failed:
* 1050029771: Device error: Setting the debug port SELECT register failed while powering up sys and debug regions (Unknown Error in J-Link DLL (error code =-1)).
This might indicate that the debug port is unavailable. Please double-check device power supply and SWD lines, and that SWD isn't disabled (Generic)
FATAL ERROR: command exited with status 1: nrfutil --json device --x-ext-mem-config-file /home/xxxxx/ncs/v3.0.2/zephyr/boards/nordic/nrf5340dk/support/nrf5340dk_qspi_nrfutil_config.json x-execute-batch --batch-path /home/xxxxx/blinky_1/build/generated_nrfutil_batch.json --serial-number 1050029771
* The terminal process terminated with exit code: 1.
* Terminal will be reused by tasks, press any key to close it.
Can you provide pointers, so I can talk to the nrf5340 DK board again?
Thanks!