#define circle_width 16
#define circle_height 16
static unsigned char circle_bits[] = {
   0xc0, 0x01, 0xf0, 0x07, 0xfc, 0x1f, 0xfc, 0x1f, 0xfe, 0x3f, 0xfe, 0x3f,
   0xff, 0x7f, 0xff, 0x7f, 0xff, 0x7f, 0xfe, 0x3f, 0xfe, 0x3f, 0xfc, 0x1f,
   0xfc, 0x1f, 0xf0, 0x07, 0xc0, 0x01, 0x00, 0x00};