Hello Timothy, It sounds to me that either the RST ISR keeps getting called without the programmer attached. Can you test again while in Free Run mode to see if the problem replicates or if it only happens after a POR? When do you disable the WDT? Start of main? You could possibly have an access violation somewhere. Do you have a free I/O to spare? Can you toggle some I/O at different parts of your code to pinpoint exactly when it resets? Example, set GPIO at main start, a few after your next function call. This would be to pinpoint if it gets to main and if so how far after it resets.
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