USART 8N1 ATmega328

#include <avr/io.h>          

#include <avr/interrupt.h> 

#define FOSC 16000000                 // Clock Speed

#define BAUD 9600

#define MYUBRR FOSC/16/BAUD-1

void USART_Init( unsigned int ubrr);

void uart_putc(unsigned char c);

int main( void )

  {

  USART_Init((uint8_t )MYUBRR);  

  UCSR0B |= (1 << TXEN0);              // USART aktiv  

  /*UCSR0C &= ~(1 << UMSEL01);          // asynchron

  UCSR0C &= ~(1 << UMSEL00);            // asynchron

  UCSR0C &= ~(1 << UPM00);            // kein Paritätsbit

  UCSR0C &= ~(1 << UPM01);            // kein Paritätsbit

  UCSR0C &= ~(1 << USBS0);            // ein Stopbit

  UCSR0C &= ~(1 << UCSZ02); */          // 8 Bit

  UCSR0C |= (1 << UCSZ00) | (1 << UCSZ01);  

  UCSR0C &= ~(1 << UCPOL0);

  uint8_t i=2;

  while(1) 

     {

     uart_putc(i);

     }                      

  return 0;   

  }        

void USART_Init( unsigned int ubrr)

  {

  UBRR0H = (unsigned char)(ubrr >> 8); // BAUD-Rate

  UBRR0L = (unsigned char) ubrr;

  }

void uart_putc(unsigned char c)

  {

  while (!(UCSR0A & (1<<UDRE0)))                    // warten bis Senden moeglich

    {

    }  

  UDR0 = c;                                          // sende Zeichen

  }