External interrupt on atmega AVR
I have verified all the ports work, and have added LEDs to indicate that the program has reached the wait loop. I have looked at several code examples, and there doesn't appear to be anything missing.
At the moment, I think that the issue may be with the fuses dealing with the boot sector. Fuses are currently set to Low:0xFD, High:0xDF, Extended:0xFF.
Thanks in advance for any suggestions as to what the problem might be.