Geigercounter/Geigerzaehler/main.c

/*
 * geigerzaehler.c
 *
 * Created			:	28.02.2019 09:07:22
 * Author			:	John Ditgens, Alexander Brandscheidt
 * Git-Repository	:	https://gitea.Railduction.eu/JohnD/Geigerzaehler.git
 *
 * MController		:	AtMega328P
 * Board			:	Arduino Nano
 */ 
#define F_CPU 20000000UL 				// Clock speed: 20 MHz	- Maximum of AtMega328P

// Imports
#include <avr/io.h>
#include <avr/interrupt.h>
#include <stdint.h>


int main()
{
    DDRD &= ~(1<<2); 					// Activate PD2
    DDRD &= ~(1<<3);					// Activate PD3
										
	PORTD |= (1<<2);					// Enable Pull Up Resistor Pin D2
	PORTD |= (1<<3);					// Enable Pull Up Resistor Pin D3
	
    EICRA |= (1 << ISC11)|(1 << ISC10); // Only at raising edge
    EIMSK |= (1 << INT1);				// Activate Interrupt INT0
    
    EICRA |= (1 << ISC00);				// Only at falling edge
    EIMSK |= (1 << INT0);				// Activate Interrupt INT1
	
    sei();		// Activate global interrupts
	
	// Endless loop
    while (1) 
    {
    }
}

ISR(INT0_vect) 							
{
	reti();
}


ISR(INT1_vect)
{
	reti();
}