I have been working at least 9 hours trying to get a tiny26 to respond to a pin change interrupt on PA6...does anyone have a simple example, gauranteed to work?
I have tried setting GIMSK, DDRA & portA every which way, to no avail. My interrupt routine runs just fine--it is just never being called. This is an actual board, not a simulator. I am using the correct interrupt vector (third one on the list).
I am assuming what occurs on the other pins does not matter (I can't get ANY pin change interrupts & would be happy if any occurred at all).
Should I be doing something with GIFR? It is unclear if this needs to be touched--though I've tried a few things.
Ithionnk I need a small known working sample to see just what the H*** is going wrong. I even checked my signal going into the pin!
What does the interrupt consider to be a "change" & at what point is it considered a change? I am tapping wires low & high, so there should be plenty of interrupting going on.