added more funtions to pin interface

interfaces/pin.hpp

@@ -4,10 +4,20 @@
 template <typename Derived>
 struct Pin
 {
+    bool read()
+    {
+        return static_cast<Derived*>(this)->readImpl();
+    }
+
     void write(bool logic)
     {
         static_cast<Derived*>(this)->writeImpl(logic);
     }
+
+    void toggle()
+    {
+        static_cast<Derived*>(this)-toggleImpl();
+    }
 };
 
 #endif // __PIN_HPP__