DDRB = 0; //input
    DDRD = 0; //input
    PORTB = 0xFF; //on
    PORTD = 0;    //off


    for (;;)
    {
        while(fgetc(&USBSerialStream) != 'x');  //wait for x

        DDRB = gethex();
        DDRD = gethex();

        CDC_Device_USBTask(&VirtualSerial_CDC_Interface);
        USB_USBTask();
    }



/* V1
    DDRB = 0xFF; //output
    DDRD = 0xFF;
    PORTB = 0; //off
    PORTD = 0;


    for (;;)
    {
        while(fgetc(&USBSerialStream) != 'x');  //wait for x

        PORTB = gethex();
        PORTD = gethex();

        CDC_Device_USBTask(&VirtualSerial_CDC_Interface);
        USB_USBTask();
    }*/