[SOLVED] How to init USART on ATMEGA128?

[bianchi77]

Guys,

I tried to init USART on ATMEGA128 by following this tutorial:

https://www.avrfreaks.net/index.php?name=PNphpBB2&file=viewtopic&t=45341


but I got this message
../mainV5.c:49:2: error: 'UCSRB' undeclared (first use in this function)


Did I miss a library here ?
I put
#include <avr/io.h> already...

Thanks

- - - Updated - - -

I got it :

void usart_Init( unsigned int ubrr )
{
/* Set baud rate */

	UBRR0H = (unsigned char)(ubrr>>8);
	UBRR0L = (unsigned char)ubrr;
	/* Enable receiver and transmitter */
	UCSR0B = (1<<RXEN)|(1<<TXEN);
	/* Set frame format: 8data, 2stop bit */
	UCSR0C = (1<<USBS)|(3<<UCSZ0);
}