We have looked at the basics of AVR Interrupts, now let us go ahead and use the External Interrupts feature on the AVR MCUs.
Steps to configure the Interrupts:
Contents
[hide]The Registers
General Interrupt Control Register (GICR)
General Interrupt Flag Register(GIFR)
MCU Control Register (MCUCR)
We will connect two switches to the two interrupt pins and show the status on a LCD. The connections are shown in the image below.