Merge pull request #16 from grissiom/fix-timer

more deterministic on timer

src/timer.c

@@ -276,9 +276,15 @@ rt_err_t rt_timer_start(rt_timer_t timer)
 
         /*
          * It supposes that the new tick shall less than the half duration of
-         * tick max.
+         * tick max. And if we have two timers that timeout at the same time,
+         * it's prefered that the timer inserted early get called early.
          */
-        if ((t->timeout_tick - timer->timeout_tick) < RT_TICK_MAX / 2)
+        if ((t->timeout_tick - timer->timeout_tick) == 0)
+        {
+            rt_list_insert_after(n, &(timer->list));
+            break;
+        }
+        else if ((t->timeout_tick - timer->timeout_tick) < RT_TICK_MAX / 2)
         {
             rt_list_insert_before(n, &(timer->list));
             break;