/*********************************************
* Chip type           : ATtiny13A
* Clock frequency     : 9,600000 MHz
**********************************************
*****************************************************
1.0 prva verzia


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

#define F_CPU 4800000UL 		 //Definovanie názvu F_CPU ako hodnotu 1000000HZ 
#include <util/delay.h>          //knižnica pre oneskorenia

#include <avr/io.h>
#include <avr/interrupt.h>
//#include "Max7219.h"


#define setb(port,pin) port |= 1<<pin 		//nastav bit
#define clrb(port,pin) port &= ~(1<<pin) 	//nuluj bit
#define negb(port,pin) port ^= 1<<pin 		//neguj bit


//******************************************************************
volatile unsigned char otmin=23;
volatile unsigned char ot,setot;
volatile unsigned char x,run=0;
volatile unsigned char sinUP=0;

//*******************************************************
//*********************** MAIN **************************
//*******************************************************
ISR (INT0_vect)
	{

	TCNT0=200;
		run=1;

	TIFR0 = 1<<TOV0;
	TIMSK0 = 1<<TOIE0;//TOIE0 counter overflow interrupt

	}

ISR (TIM0_OVF_vect)
	{	
	if (run) setb(PORTB,0);

	_delay_us(250);
	clrb(PORTB,0);

	TCNT0=69;

	}

//*******************************************************************
int main(void) 
{							 //1 znamena vystup
	DDRB= 0b00001101;        //nastaví všetky piny portu B ako vstupné

	TCCR0B = 0b100;//clk/256	3=timer prescaler 64, 1=1

	GTCCR = 1<<PSR10;
	TCNT0=1;

	MCUCR = (1<<ISC01);					//povolene prerusienie od INT0 zostupna

	TIFR0 = 1<<TOV0;
	GIFR = (1<<INTF0);
	GIMSK = (1<<INT0);					//povolene prerusienie od INT0
	sei();              				// Assembler macro for global int. enable


//	run=1;
	while(1);

while(1)                //nekonečný cyklus

    {
//	ot=setot;
//	_delay_ms(20);
    }

	return 0;
}

//-------------------------------------------------