diff --git a/inout.h b/inout.h
index dba5f59..74b17cf 100644
--- a/inout.h
+++ b/inout.h
@@ -1,7 +1,7 @@
 /*
-* Copyright (c) by BlackMark 2015-2018
-* Date 26/04/2018
-* Version 3.0
+* Copyright (c) by BlackMark 2015-2019
+* Date 02/01/2019
+* Version 3.1
 */
 
 #ifndef INOUT_H
@@ -207,6 +207,7 @@ public:
 
 	static inline bool read() __attribute__( (always_inline) );
 	static inline void write( bool bValue ) __attribute__( (always_inline) );
+	static inline void toggle() __attribute__( (always_inline) );
 };
 
 //////////////////////////////////////////////////////////////////////////
@@ -255,6 +256,16 @@ inline void InOutPin<enmPin>::write( bool bValue )
 		*vpui8PORT &= ~( 1 << ui8Pin );
 }
 
+//////////////////////////////////////////////////////////////////////////
+template<InOut::Pin enmPin>
+inline void InOutPin<enmPin>::toggle()
+{
+	constexpr volatile uint8_t *vpui8PORT = InOut::getPort( enmPin, InOut::Type::PORT );
+	constexpr uint8_t ui8Pin = InOut::getPin( enmPin );
+
+	*vpui8PORT ^= ( 1 << ui8Pin );
+}
+
 /************************************************************************/
 
 //////////////////////////////////////////////////////////////////////////