Today I have started to encounter strange problems with SWD debugging.
The debug only works if I keep my finger on the SWD pins. To be more interesting I have the same problem with the boards I was working in the past without any problems. All Vdd and Vss are connected correctly - checked many times.
I am trying to sort this problem for two days and have run out of the fresh ideas what actually can cause this problem.
Any help appreciated.