165 def watchdog_trigger():

   165 def watchdog_trigger():

   166     print("SVGHMI watchdog trigger")

   166     print("SVGHMI watchdog trigger")

   167     

   167     

   168 

   168 

   169 # Called by PLCObject at start

   169 # Called by PLCObject at start

   171     global svghmi_listener, svghmi_root, svghmi_send_thread

   171     global svghmi_listener, svghmi_root, svghmi_send_thread

   172 

   172 

   173     svghmi_root = Resource()

   173     svghmi_root = Resource()

   174     svghmi_root.putChild("ws", WebSocketResource(HMIWebSocketServerFactory()))

   174     svghmi_root.putChild("ws", WebSocketResource(HMIWebSocketServerFactory()))

   175 

   175 

   179     svghmi_send_thread = Thread(target=SendThreadProc, name="SVGHMI Send")

   179     svghmi_send_thread = Thread(target=SendThreadProc, name="SVGHMI Send")

   180     svghmi_send_thread.start()

   180     svghmi_send_thread.start()

   181 

   181 

   182 

   182 

   183 # Called by PLCObject at stop

   183 # Called by PLCObject at stop

   185     global svghmi_listener, svghmi_root, svghmi_send_thread, svghmi_session

   185     global svghmi_listener, svghmi_root, svghmi_send_thread, svghmi_session

   186 

   186 

   187     if svghmi_session is not None:

   187     if svghmi_session is not None:

   188         svghmi_session.close()

   188         svghmi_session.close()

   189     svghmi_root.delEntity("ws")

   189     svghmi_root.delEntity("ws")