EM4095 gibt kein Demod oder Clock von sich

int main(void)

{

    uart_init();

    MCUCR |= 1<<ISC00; //Any logical change on INT0 generates an interrupt request

    MCUCR |= 1<<ISC10; //Any logical change on INT1 generates an interrupt request

  GICR |= 1<<INT0; //External interrupt request 0 enable (demod_out from RFID chip)

  GICR |= 1<<INT1; //External interrupt request 1enable (CLK from RFID chip)

    sei();

    uart_puts("Started\r\n");

    DDRD = 1<<PD5 | 1<<PD4 ; //Mod, Shd

    setportdoff(PD4);

    while (1)

  {   

    _delay_ms(200);

  }

    return 0;

}

ISR(INT1_vect)

{

    uart_puts("INT1.\r\n");

    _delay_ms(200);

}

ISR(INT0_vect)

{

    uart_puts("INT0.\r\n");

    _delay_ms(200);

}