/* ******************************************************** *
 *
 * Simple Template for ATMEL Microcontroller				*
 * -------------------------------------------------------- *
 * Created on: 	25.07.2016
 * Author:		Paolo Iocco
 * ******************************************************** */
/* ******************************************************** *
   ATtiny 88 / Mega 168 / Mega 328 Pin map
                           +-\/-+
              /Reset PC6  1|o   |28  PC5 ADC5 
                 RXD PD0  2|    |27  PC4 ADC4
                 TXD PD1  3|    |26  PC3 ADC3
                     PD2  4|    |25  PC2 ADC2
				OC2B PD3  5|    |24  PC1 ADC1
					 PD4  6|    |23  PC0 ADC0
					 VCC  7|    |22  GND
					 GND  8|    |21  AREF
				OSC1 PB6  9|    |20  VCC
				OSC2 PB7 10|    |19  PB5 SCK
				OC0B PD5 11|    |18  PB4 MISO
		   AIN0 OC0A PD6 12|    |17  PB3 OC2A MOSI
				AIN1 PD7 13|    |16  PB2 OC1B
					 PB0 14|    |15  PB1 OC1A
					       +----+
* ******************************************************** */

#include <avr/io.h>				
#include <util/delay.h>			

int main (void)					
{
	unsigned char zwischenspeicher;		
	DDRB = 0b00000100;		
	while(1)					
	{
		zwischenspeicher = PORTB;				
		zwischenspeicher = zwischenspeicher ^ 0b00000100;	
		PORTB = zwischenspeicher;				
		_delay_ms(500);							
	}							
	return 0;					
}