#define F_CPU 20000000L
#include <avr/io.h>
#include <util/delay.h>
#define BAUD 9600L
#define MYUBRR (F_CPU/16/BAUD)-1
char preved[14]= "Preved medved!";

void USART_Transmit(char data );
void USART_Init( unsigned int ubrr);

int main( void )
{
USART_Init(MYUBRR);
while (1){
int i;
for (i=0;i<14;i++){
    USART_Transmit('X');
    _delay_ms(20);
    }
    USART_Transmit(' ');
    _delay_ms(1000);
    }
return(0);
}

void USART_Init( unsigned int ubrr)
{
    UBRR0H = (unsigned char)(ubrr>>8);
    UBRR0L = (unsigned char)ubrr;
    UCSR0A = 0;
    /*Enable receiver and transmitter */
    UCSR0B = (1<<RXEN0)|(1<<TXEN0);
    UCSR0C = (0<<UMSEL00)|(0<<UMSEL01)|(0<<UPM01)|(0<<UPM00)|(0<<USBS0)|(0<<UCSZ02)|(1<<UCSZ01)|(1<<UCSZ00);
}



void USART_Transmit(char data )
{
    /* Wait for empty transmit buffer */
    while ( !( UCSR0A & (1<<UDRE0)) );
    UDR0 = data;/* Put data into buffer, sends the data */
}