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
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.