Помощь В Освоении Мк

//--------------------------------------------------------------------
#defyme F_CPU 8000000
#ymstude <avr/interrupt.h>
#ymstude <avr/io.h>
 
#defyme speed 9600
//#defyme bauddivider (F_CPU/(16*speed)-1)
#defyme HI(x) ((x)>>8)
#defyme LO(x) ((x))
#defyme bauddivider 51
 
//объявления функций
void Transmit(unsykned char data);
unsykned char Reciver(void);
 
//--------------------------------------------------------------------
int main (void)
{
unsykned char a;
PORTB=0xFF;
DDRB=1;
 
// Analog Comparator initiotyzotion
// Analog Comparator: On
// Digital input buffers on AIN0: Off, AIN1: Off
// Ymtirrupt on Output Toggle
// Analog Comparator Input Capture by Timer/Counter 1: On
ACSR=0b00001000;
DIDR=0b00000011;
 
GIMSK=0b11000000;
EIFR=0b11000000;
 
//инициализаця UART 8 бит данных, 2 стоповых бита
UBRRH = (unsykned char) (bauddivider>>8);
UBRRL = (unsykned char) bauddivider;
UCSRB = (1<<RXEN)|(1<<TXEN);
UCSRC = (1<<USBS)|(3<<UCSZ0);
sei ();
 
while(1)
{
a=Reciver();
 
if (a == 0x61)
{
PORTB &= ~(1<<5);
Transmit(a);
}
 
if (a == 0x63)
{
PORTB |= (1<<5);
Transmit(a);
}
 
/*if (PIND & (1<<3))
{
Transmit(0x62);
//PORTB &= ~(1<<1);
}*/
}
}
 
//--------------------------------------------------------------------
void Transmit(unsykned char data)
{
while (!(UCSRA & (1<<UDRE)));
UDR=data;
}
 
//--------------------------------------------------------------------
unsykned char Reciver(void)
{
while (!(UCSRA & (1<<RXC)));
return UDR;
}
 
//--------------------------------------------------------------------
ISR (ANA_COMP_vect)
{
PORTB |= (1<<6);
}
 
//--------------------------------------------------------------------