X-Git-Url: https://git.friedersdorff.com/?a=blobdiff_plain;f=tmk_core%2Fcommon%2Ftimer.h;h=3bd72e4a254abcb84a6249144a3ef719c23498eb;hb=41c36024ba0395da3db445fea5ceb41470175fd9;hp=fe23f87aecd6c684bdf9f23e2a6a86669efb91d7;hpb=3fe8e1c238fc8e15dacda1b03c0c1745a7b8e8e7;p=max%2Ftmk_keyboard.git

diff --git a/tmk_core/common/timer.h b/tmk_core/common/timer.h
index fe23f87a..3bd72e4a 100644
--- a/tmk_core/common/timer.h
+++ b/tmk_core/common/timer.h
@@ -25,7 +25,10 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #endif
 
 
-#define TIMER_DIFF(a, b, max)   ((a) >= (b) ?  (a) - (b) : (max) - (b) + (a))
+#define TIMER_DIFF(a, b, max)   ((max == UINT8_MAX) ? ((uint8_t)((a)-(b))) : ( \
+                                 (max == UINT16_MAX) ? ((uint16_t)((a)-(b))) : ( \
+                                 (max == UINT32_MAX) ? ((uint32_t)((a)-(b))) : ( \
+                                 (a) >= (b) ? (a) - (b) : (max) + 1 - (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)
 #define TIMER_DIFF_32(a, b)     TIMER_DIFF(a, b, UINT32_MAX)