I'm having a bit of trouble making my LCD program run with interrupts. I have to make it so that the screen will scroll up and down (vertical, not horizontal, scrolling) when I press one of two buttons (one for up, one for down). When I load the program it does not do anything, as far as I know it doesn't even reset the lcd. The only new things are the addition of the interrupts code - the rest of the program works (go here for the program code without interrupts: https://www.avrfreaks.net/index.p...)
Thanks in advance!