AP_Scheduler: prevent a divide by zero

2013-08-02 22:07:00 +10:00 · 2013-08-02 22:07:00 +10:00 · b7e3851ef8
commit b7e3851ef8
parent 890b77447a
1 changed files with 3 additions and 0 deletions
--- a/libraries/AP_Scheduler/AP_Scheduler.cpp
+++ b/libraries/AP_Scheduler/AP_Scheduler.cpp
@ -121,6 +121,9 @@ uint16_t AP_Scheduler::time_available_usec(void)
 */
 float AP_Scheduler::load_average(uint32_t tick_time_usec) const
 {
+    if (_spare_ticks == 0) {
+        return 0.0f;
+    }
    uint32_t used_time = tick_time_usec - (_spare_micros/_spare_ticks);
    return used_time / (float)tick_time_usec;
 }