diff --git a/firmware/hw_layer/pin_repository.cpp b/firmware/hw_layer/pin_repository.cpp
index f5d01aae3b..34a4287a90 100644
--- a/firmware/hw_layer/pin_repository.cpp
+++ b/firmware/hw_layer/pin_repository.cpp
@@ -17,6 +17,7 @@
 #include "rusefi.h"
 
 #define PIN_REPO_SIZE 7 * PORT_SIZE
+// todo: move this into PinRepository class
 const char *PIN_USED[PIN_REPO_SIZE];
 static int initialized = FALSE;
 
@@ -32,6 +33,10 @@ static ioportid_t ports[7] = {GPIOA,
 		GPIOH,
 };
 
+PinRepository::PinRepository() {
+
+}
+
 /**
  * @deprecated - use hwPortname() instead
  */
diff --git a/firmware/hw_layer/pin_repository.h b/firmware/hw_layer/pin_repository.h
index c5e697f58c..29cbda008d 100644
--- a/firmware/hw_layer/pin_repository.h
+++ b/firmware/hw_layer/pin_repository.h
@@ -19,6 +19,13 @@
 #include "efiGpio.h"
 // does not exactly belong here, but that works better for tests
 void outputPinRegister(const char *msg, OutputPin *output, ioportid_t port, uint32_t pin);
+
+class PinRepository {
+	public:
+	PinRepository();
+
+};
+
 #endif /* __cplusplus */
 
 #define PORT_SIZE 16