Hi all,
I recently bought an nrf52840DK, and yesterday I tried to program an external board through the p20 connector on the DK with the SWD pins. I was able to flash the code without any problems and verify that it worked.
Everything seemed to go well until today, when I connected the DK to the computer and it was no longer detected. It doesn't appear as a device in Windows Device Manager, in the nRF Connect extension for Visual Studio Code, or in the desktop version of nRF Connect. I also tried using the SEGGER J-Link Configurator, but it doesn't show up there either.
I assume the problem is with the DK since I have tried different cables and USB ports, and the result has been the same.
The external board contains an nrf52840, and the connections I made to flash it are:
nrf52840DK ---------- external board
SWDSEL ---------- VCC
SWDIO ---------- SWDIO
SWDCLK ---------- SWDCLK
GND ---------- GND
RESET ---------- RESET_N
I'm using:
-
nrf52840DK 3.0.2
-
nRF Connect SDK v2.9.1
-
SEGGER J-Link Configuration V8.28
Does anyone have any idea what the problem might be?
Thanks in advance,
Jaume