diff --git a/cubesatsim/cubesatsim.h b/cubesatsim/cubesatsim.h
index 63ff6657..0db9fedc 100644
--- a/cubesatsim/cubesatsim.h
+++ b/cubesatsim/cubesatsim.h
@@ -137,6 +137,8 @@ void config_simulated_telem();
 void generate_simualted_telem();
 void process_pushbutton();
 void blinkTimes(int blinks);
+void blink_pin(int pin, int duration);
+void config_gpio();
 
 extern int Encode_8b10b[][256];