added new method that yield from ISR after semaphore is given from ISR

libuavcan_drivers/stm32/driver/src/uc_stm32_thread.cpp

@@ -116,6 +116,11 @@ void BusEvent::signalFromInterrupt()
     portYIELD_FROM_ISR( xHigherPriorityTaskWoken );
 }
 
+void BusEvent::yieldFromISR()
+{
+    portYIELD_FROM_ISR( xHigherPriorityTaskWoken );
+}
+
 /*
  * Mutex
  */