Let us start here, from square one. No, from Zero!

games/loveplus/io.h

@@ -0,0 +1,32 @@
+#pragma once
+
+#include <vector>
+#include "cfg/api.h"
+
+namespace games::loveplus {
+
+    // all buttons in correct order
+    namespace Buttons {
+        enum {
+            Service,
+            Test,
+            Left,
+            Right,
+        };
+    }
+
+    // all lights in correct order
+    namespace Lights {
+        enum {
+            Red,
+            Green,
+            Blue,
+            Left,
+            Right,
+        };
+    }
+
+    // getters
+    std::vector<Button> &get_buttons();
+    std::vector<Light> &get_lights();
+}