#include <util/delay.h>
#include "drivers/framebuffer.h"

int main(void) {
  int8_t px, py, mx, my;

  px = 0;
  py = 0;
  mx = 1;
  my = 1;

  while(1) {
    if (px <= 0) {
      mx = 1;
    }

    if (py <= 0) {
      my = 1;
    }

    if (px >= FB_WIDTH - 1) {
      mx = -1;
    }

    if (py >= FB_HEIGHT - 1) {
      my = -1;
    }

    FB_SET(px,py,0);
    px += mx;
    py += my;
    FB_SET(px,py,1);

    _delay_ms(50);
  }
}