diff --git a/SocketExample/TCPWindowV2.xaml.cs b/SocketExample/TCPWindowV2.xaml.cs
index 76c47b4..90f1fe3 100644
--- a/SocketExample/TCPWindowV2.xaml.cs
+++ b/SocketExample/TCPWindowV2.xaml.cs
@@ -476,8 +476,8 @@ namespace SocketExample
                 Thread.Sleep(1000);
 
 
-                Thread GPIOthread = new Thread(new ThreadStart(delegate () { byte[] data = strToToHexByte("AA 55 00 81 81 0D"); client.Send(data); Thread.Sleep(3000); }));
-                GPIOthread.Start();
+                Thread GPIOthread = new Thread(new ThreadStart(delegate () { while (true) { byte[] data = strToToHexByte("AA 55 00 81 81 0D"); client.Send(data); Thread.Sleep(3000); } }));
+                GPIOthread.Start();//心跳获取GPIO状态
                 return EasyTask.CompletedTask;
             }
             #endregion