UART funktioniert nicht!

#include <util/delay.h>

#include <avr/pgmspace.h>

#include <avr/interrupt.h>

#include <avr/eeprom.h>

#include <inttypes.h>

#include <math.h>

#include <avr/eeprom.h>

#include <stdbool.h>

//Headerfiles+Subroutines---------------------------------------------

#include "Unterprogramme.h"

#include "uart.h"

#include "protocol.h"

#include "lcd-routines.h"

//--------------------------------------------------------------------

#define UART_BAUD_RATE 9600  //UART Baudrate

#define BufferMAX 100

//Global definierte Variablen-----------------------------------------

char buffer_str[BufferMAX] = { 0 };

unsigned int i = 0; //Zählervariable

//Deklarierte Variablen im EEPROM-------------------------------------

//Main-Program--------------------------------------------------------

int main(void)

{

  //UART-init:

  uart_init(UART_BAUD_SELECT(UART_BAUD_RATE, F_CPU));

  //LCD-INIT

  lcd_init();

  lcd_clear();

  //VRBOT_init();

  //After init start the speek recog

  DDRB = 255;

  //Main-Loop:*********************************************************************

  while(1)

  {

    uart_puts("JAA");

    _delay_ms(500);

  }

  //back***************************************************************************

  return 0; //END

}