However, it should have told you that it was not the watchdog that was at fault. After all, the watchdog would have restarted your code had it found an infinite loop once the watchdog was enabled. The problem, of course, is that when you use a port pin to do that sort of thing, you have no idea what's happening unless you carefully monitor the pins with, say, a logic analyzer ... one that lets you capture a very deep sample set so that you can determine from that how it got to where it stopped making progress. WIthout a very deep sample memory, you can't recognize such an event ... or, actually, non-event.

RE