I am working with MKE02Z32 MCU, and had a Problem discovered which I cannot explain.
I toggle one GPIO output (1st) in a 250ms Timerinterrupt and in my main Loop I set another GPIO output (2nd).
This 2nd disturbes the 1st GPIO signal. Instead of clear squer signal, I measure disturbances (see Picture).
I could reproduce this behaviour also in FRDM-KE02Z evaulation board with the demonstration SW package.
Have anyone meet with something similar? I would like to have an explanation for this phenomenon, and how to avoid it.
Thanks in advance!