External interrupt

External interrupt INT0

Code Example

ISR (INT0_vect)
{
	uart0Printf("\n\rExternal Interrupt INT0 ! ");
}


// ****************************************************************************

int main (void)
{
	// Initialize the system

	uart0Init(19200);

	// External Interrupt(s) initialization

	// INT0 : On     Mode: Falling Edge

	EICRA=0x02;
	EICRB=0x00;
	EIMSK=0x01;
	EIFR=0x01;
	
	// Global enable interrupts

	sei();
	while(1);
}