diff --git a/io-helper.c b/io-helper.c
index 337d299..06c39dc 100644
--- a/io-helper.c
+++ b/io-helper.c
@@ -1,4 +1,5 @@
 #include <avr/io.h>
+#include <stdint.h>
 #include <util/atomic.h>
 #include "io-helper.h"
 
@@ -69,6 +70,11 @@ void ioHelperEdgeDetector(void){
     }
 }
 
+void ioHelperBlinkOuts(){
+    for(uint8_t i=0; i<nrOfOutputs/8; i++)
+        outStates[i] ^= outStatesBlinking[i];
+}
+
 /* @brief: copies a single bit from one char to another char (or arrays thereof)
  *
  *
diff --git a/io-helper.h b/io-helper.h
index fec5968..06dfd1d 100644
--- a/io-helper.h
+++ b/io-helper.h
@@ -27,6 +27,7 @@ void ioHelperSetBit(volatile uint8_t *list, uint8_t nr, uint8_t state);
 unsigned char ioHelperReadBit(volatile uint8_t *list, uint8_t nr);
 void ioHelperDebounce(void);
 void ioHelperEdgeDetector(void);
+void ioHelperBlinkOuts(void);
 
 uint8_t read_Input(uint8_t nr, uint8_t type);
 void set_Output(uint8_t nr, uint8_t state);