When my code is running the right hand LED on the ATMEL ICE is green but flickers at about 4Hz (flickers counted by eye + measured for 10 secs with stopwatch). I've tried searching for the answer to this specific question but not found an answer.
This happens both with an ATMega328P and an ATTiny85. Both are just running very simple code:
start: rjmp start
I use Atmel Studio 7.0.2397 and do "Debug / Start Debugging and Break" then do "Debug / Continue".
I wonder if the ICE is stopping the target briefly to poll it. I am considering measuring execution time of some lengthy CPU bound code with and without the ICE, to see if execution is marginally slower with the ICE enabled but I haven't done that yet.
TIA for any help understanding what's happening.