void main(void) {

// Input/Output Ports initialization
// Port B initialization
// Func7=Out Func6=Out Func5=In Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=1 State6=0 State5=T State4=T State3=T State2=T State1=T State0=P
PORTB=0x81;
DDRB=0xC0 | ( 1 << 4 );

// PORTB &= ~( 1 << 4 );
// DDRB |= ( 1 << 4 );

// Port C initialization
// Func6=In Func5=In Func4=Out Func3=In Func2=In Func1=In Func0=In
// State6=T State5=T State4=0 State3=T State2=T State1=T State0=T
PORTC=0x00;
DDRC=0x10;

// Port D initialization
// Func7=Out Func6=In Func5=Out Func4=In Func3=In Func2=In Func1=In Func0=In
// State7=0 State6=T State5=1 State4=T State3=T State2=T State1=T State0=T
PORTD=0x20;
DDRD=0xA0;

// Timer/Counter 0 initialization
// Clock source: System Clock
// Clock value: Timer 0 Stopped
// Mode: Normal top=FFh
// OC0A output: Disconnected
// OC0B output: Disconnected
TCCR0A=0x00;
TCCR0B=0x00;
TCNT0=0x00;
OCR0A=0x00;
OCR0B=0x00;

// Timer/Counter 1 initialization
// Clock source: System Clock
// Clock value: Timer 1 Stopped
// Mode: Normal top=FFFFh
// OC1A output: Discon.
// OC1B output: Discon.
// Noise Canceler: Off
// Input Capture on Falling Edge
// Timer 1 Overflow Interrupt: Off
// Input Capture Interrupt: Off
// Compare A Match Interrupt: Off
// Compare B Match Interrupt: Off
TCCR1A=0x00;
TCCR1B=0x00;
TCNT1H=0x00;
TCNT1L=0x00;
ICR1H=0x00;
ICR1L=0x00;
OCR1AH=0x00;
OCR1AL=0x00;
OCR1BH=0x00;
OCR1BL=0x00;

// Timer/Counter 2 initialization
// Clock source: System Clock
// Clock value: Timer 2 Stopped
// Mode: Normal top=FFh
// OC2A output: Disconnected
// OC2B output: Disconnected
ASSR=0x00;
TCCR2A=0x00;
TCCR2B=0x00;
TCNT2=0x00;
OCR2A=0x00;
OCR2B=0x00;

// External Interrupt(s) initialization
// INT0: Off
// INT1: Off
// Interrupt on any change on pins PCINT0-7: Off
// Interrupt on any change on pins PCINT8-14: Off
// Interrupt on any change on pins PCINT16-23: Off
EICRA=0x00;
EIMSK=0x00;
PCICR=0x00;

// Timer/Counter 0 Interrupt(s) initialization
TIMSK0=0x01;
// Timer/Counter 1 Interrupt(s) initialization
TIMSK1=0x00;
// Timer/Counter 2 Interrupt(s) initialization
TIMSK2=0x01;

// Analog Comparator initialization
// Analog Comparator: Off
// Analog Comparator Input Capture by Timer/Counter 1: Off
ACSR=0x80;
ADCSRB=0x00;

// ADC initialization
// ADC Clock frequency: 250,000 kHz
// ADC Voltage Reference: AREF pin
// ADC Auto Trigger Source: None
// Only the 8 most significant bits of
// the AD conversion result are used
// Digital input buffers on ADC0: On, ADC1: On, ADC2: On, ADC3: On
// ADC4: On, ADC5: On
DIDR0=0x00;
ADMUX=ADC_VREF_TYPE & 0xff;
ADCSRA=0x85;

// SPI initialization
// SPI Type: Slave
// SPI Clock Rate: 125,000 kHz
// SPI Clock Phase: Cycle Start
// SPI Clock Polarity: High
// SPI Data Order: MSB First
SPCR=0xCE;
SPSR=0x00;
}