fix macros in the hwtimer

10 years ago · 6da0375197
parent be8fd6fd92
commit 6da0375197
1 changed files with 2 additions and 2 deletions
--- a/core/include/hwtimer.h
+++ b/core/include/hwtimer.h
@ -46,14 +46,14 @@
 * @param[in]   us number of microseconds
 * @return      kernel timer ticks
 */
-#define HWTIMER_TICKS(us)        (us / (1000000L / HWTIMER_SPEED))
+#define HWTIMER_TICKS(us)        ((us) / (1000000L / HWTIMER_SPEED))

 /**
 * @brief       Convert ticks to microseconds
 * @param[in]   ticks   number of ticks
 * @return      microseconds
 */
-#define HWTIMER_TICKS_TO_US(ticks)        (ticks * (1000000L/HWTIMER_SPEED))
+#define HWTIMER_TICKS_TO_US(ticks)        ((ticks) * (1000000L/HWTIMER_SPEED))

 /**
 * @def    HWTIMER_MAXTICKS