diff --git a/src/main/java/com/iflytop/gd/hardware/controller/IOController.java b/src/main/java/com/iflytop/gd/hardware/controller/IOController.java
new file mode 100644
index 0000000..340cab4
--- /dev/null
+++ b/src/main/java/com/iflytop/gd/hardware/controller/IOController.java
@@ -0,0 +1,5 @@
+package com.iflytop.gd.hardware.controller;
+
+// TODO:
+public class IOController {
+}
diff --git a/src/main/java/com/iflytop/gd/hardware/service/IOService.java b/src/main/java/com/iflytop/gd/hardware/service/IOService.java
new file mode 100644
index 0000000..1f43723
--- /dev/null
+++ b/src/main/java/com/iflytop/gd/hardware/service/IOService.java
@@ -0,0 +1,5 @@
+package com.iflytop.gd.hardware.service;
+
+// TODO:
+public class IOService {
+}