Fixed msgQSend() called in ISR mode.

target/src/msgQLib.c

@@ -181,8 +181,16 @@ STATUS  msgQSend (MSG_Q_ID msgQId, char *buffer, UINT nBytes,
             return  (ERROR);
         }
 
-        ulError = API_SemaphoreBPend(msgQId->wrSync, vx2syMsgQTo(timeout));
+        if (API_InterGetNesting()) {
+            errno = ERROR_MSGQUEUE_FULL;
+            return  (ERROR);
+
+        } else {
+            ulError = API_SemaphoreBPend(msgQId->wrSync, vx2syMsgQTo(timeout));
+        }
+
         if (ulError) {
+            errno = ERROR_MSGQUEUE_FULL;
             return  (ERROR);
         }
     }