diff --git a/io-helper.h b/io-helper.h
index b59b2b3..c9b7bda 100644
--- a/io-helper.h
+++ b/io-helper.h
@@ -20,6 +20,13 @@ extern volatile uint8_t outStates[nrOfOutputs/8];
 extern volatile uint8_t inStates[nrOfInputs/8];
 extern volatile uint8_t ioHelperDebounceTable[nrOfInputs];
 
+extern volatile uint8_t outStatesBlinking[nrOfOutputs/8];
+
+extern volatile uint8_t inStatesBothEdges[nrOfInputs/8];
+extern volatile uint8_t inStatesRisingEdge[nrOfInputs/8];
+extern volatile uint8_t inStatesFallingEdge[nrOfInputs/8];
+
+
 void ioHelperSetOuts(void);
 void ioHelperReadPins(void);
 void ioHelperIoConf(void);