@ -20,6 +20,11 @@ along with this program. If not, see <http://www.gnu.org/licenses/>.
#include <stdint.h>
#if defined(__AVR__)
#include "avr/timer_avr.h"
#endif
#define TIMER_DIFF(a, b, max) ((a) >= (b) ? (a) - (b) : (max) - (b) + (a))
#define TIMER_DIFF_8(a, b) TIMER_DIFF(a, b, UINT8_MAX)
#define TIMER_DIFF_16(a, b) TIMER_DIFF(a, b, UINT16_MAX)