/* Include-Dateien   
   ************************************************/
 	#include "AVR_8Bit_TIMER.H"
 	#include <avr/sleep.h>

/* Defintion PORT-Datentyp */
union PORT	{
				uint8_t byte;
				struct  {
					uint8_t Bit0:1;
					uint8_t Bit1:1;
					uint8_t Bit2:1;
					uint8_t Bit3:1;
					uint8_t Bit4:1;
					uint8_t Bit5:1;
					uint8_t Bit6:1;
					uint8_t Bit7:1;
				};	
			};

void io_init(void)
{
	/* Define directions for port pins ... 0 = Input; 1 = Output*/
	DDRB = (0<<DDB3)|(0<<DDB2)|(1<<DDB1)|(0<<DDB0);

	/* data register Port
		Port-Pin set to Output - used to control output
		Port-Pin set to Input - used to enable PulUp (1 - activate PullUp)
	*/
	  PORTB = 0; /* 0 = no PullUps */
}

int main(void)
{
	union PORT Port_B;
	uint8_t Old_PinStatus = 0;
	long TimerCnt=0;

	
	set_sleep_mode (SLEEP_MODE_PWR_SAVE);

	TimerCnt += 32.0/8.0; //_TIME_CONST_US_TIMER_CLOCK (32); // TIME_US2COUNTER(250, 32);

	Init_8Bit_Timer_0_AVR_MEGA_8( 0x86);
  	
	while(1){
   		sleep_mode();
		Port_B.byte =  PINB;
		if ( Port_B.Bit1 != Old_PinStatus) {
			Old_PinStatus = Port_B.Bit1;
			Set_TIMER_0_IRQ_Count_Value ( ++TimerCnt );
		}
	};		
}