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-rw-r--r--common/timer.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/common/timer.h b/common/timer.h
index f0c5ffc98a..fe23f87aec 100644
--- a/common/timer.h
+++ b/common/timer.h
@@ -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)