diff --git a/gpio.h b/gpio.h
--- a/gpio.h
+++ b/gpio.h
@@ -2,6 +2,9 @@
 #define GPIO_H
 
 #include <inttypes.h>
+#include "stm32f0xx_hal.h"
+#include "stm32f0xx_hal_conf.h"
+#include "config.h"
 
 #define CHANGE_PERIOD_MS 100
 #define CHANGE_ELAPSED (HAL_GetTick() - change_time_reset) > CHANGE_PERIOD_MS