change udp default task level

xs_udp.c

@@ -58,7 +58,7 @@ bool xs_udp_init(udp_t *udp_handler, const char *name, uint16_t port, udp_on_pac
 
   if (on_packet) {
     // ´´½¨½ÓÊÕÏß³Ì
-    osThreadDef(udp_server_rx_thread, udp_server_receive_thread, osPriorityBelowNormal, 0, 512);
+    osThreadDef(udp_server_rx_thread, udp_server_receive_thread, osPriorityNormal, 0, 512);
     udp_handler->rx_thread = osThreadCreate(osThread(udp_server_rx_thread), udp_handler);
     ZASSERT(udp_handler->rx_thread != NULL);
   }