#define DOUBLE_SPEED  0
#define UBRRVALUE(BAUD)  (FOSC/(16> >(!!DOUBLE_SPEED))/BAUD-1)
#define BAUDRATE      115200UL
#define DEFAULT_UBRRVALUE  (UBRRVALUE(BAUDRATE))
void USART_Init( unsigned int ubrr )
{
  UCSR0A = (!!DOUBLE_SPEED)<   //Set baud rate
  UBRR0H = (unsigned char)(ubrr> >8);
  UBRR0L = (unsigned char)ubrr;
  //Enable receiver and transmitter
  UCSR0B = (1<  //Set frame format: 8data, 1stop bit
#ifdef __ATmega8__
  UCSR0C = (1< 2stop bit
#else
  UCSR0C = (3< 2stop bit
#endif
#if (USE_ISR==1)
  //enable RX interrupt
  UCSR0B |= (< #endif  
}