/*
* $Id: simpleuart.c,v 1.1 2002/10/13 03:02:28 ken Exp $ 
* very simple test program to assure that uart works
* this just echoes characters back out the uart interface
*
*/

#include <avr/io.h>
#include <stdlib.h>


char recchar(void)
{
	while (! (UCSRA & _BV(RXC)));
	return UDR;
}

void sendchar(char c)
{
	while (! (UCSRA & _BV(TXC)));
	UDR = c;
}

int
main(int argc, char ** argv)
{
	volatile int c;

	/* setup serial */
	UBRR = 51; /* 9600 at 8 mhz */
	UCSRB |= (_BV(RXEN) | _BV(TXEN));


	sendchar('F');
	sendchar('\n');	
	
	while(1){
		c  = recchar();
		/* right back at 'cha */
		sendchar(c);
	};

	return(0);
} /* END MAIN */

/* EOF */