RS232 funktioniert nicht - Roboternetz-Forum

Hallo,

ok, nun geht es fast

hier nochmal der Code:
main.c

Code:

#define F_CPU 16000000
#include <avr/io.h>
#include <util/delay.h>
#include <inttypes.h>

#include "usart.c"

void wait_ms(int i)
{	int x = 0;
	while(x <= i)
	{
		_delay_ms(1);
		x++;
	}
}

int main(void)
{
	usart_init();

	while(1)
	{
		usart_print("Test\n");
		wait_ms(1000);
	}

	return 0;
}

usart.c

Code:

#define USART_BAUD_RATE 9600

#define USART_BAUD_SELECT    (F_CPU/(USART_BAUD_RATE*16l)-1) 


void usart_init()
{
	/* Set baud rate */
	UBRRH = (uint8_t) (USART_BAUD_SELECT>>8);
	UBRRL = (uint8_t) USART_BAUD_SELECT;

	/* Enable Receiver and Transmitter */
	UCSRB = (1<<RXEN) | (1<<TXEN);

	/* Set frame format: 8data, 2stop bit */
	UCSRC = (1<<URSEL) | (1<<USBS) | (1<<UCSZ0);
}

void usart_transmit(uint8_t data)
{
	/* Wait for empty transmit buffer */
	while ( !( UCSRA & (1<<UDRE)) )
		;

	/* Put data into buffer, sends the data */
	UDR = data;
}

void usart_print(char *s)
{
	do
	{
		usart_transmit(*s);
	}
	while (*s++);
}

Nun kommt im Terminal immer Zeichensalat (wenigstens etwas