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

#define DEBUG_SIZE		100


int debug_putchar(char c, FILE *stream)
{
	(void) stream; //unused

	volatile static char debug[DEBUG_SIZE];
	static uint8_t ptr = 0;

	debug[ptr++] = c;

	if (c < 32 || ptr == DEBUG_SIZE)
	{
		ptr = 0;
		(void) debug;
	}

	return 0;
}

int main(void)
{
    static FILE debug_out = FDEV_SETUP_STREAM(debug_putchar, NULL, _FDEV_SETUP_WRITE);

    stdout = &debug_out;
    stderr = &debug_out;

    printf("Hallo\n");

    while (1) 
    {
    }
}