#include "usart.h"
 void USART_ini (unsigned int speed)
 {
	UBRRH=(unsigned char) (speed>>8);
	UBRRL=(unsigned char) speed;
	UCSRB=(1<<RXEN)|(1<<TXEN);
	UCSRB|=(1<<RXCIE);
	UCSRA|=(1<<U2X);
	UCSRC=(1<<URSEL)|(1<<USBS)|(1<<UCSZ1)|(1<<UCSZ0);
 }

void USART_Transmit (unsigned char dat)
 {
	 while(!(UCSRA&(1<<UDRE))) ;
	 UDR=dat;
 }