new function

inc/main.h

@@ -35,4 +35,13 @@ OF SUCH DAMAGE.
 #ifndef MAIN_H
 #define MAIN_H
 
+#define LED_PORT            GPIOA
+#define LED_PIN             GPIO_PIN_7
+#define LED_RCU             RCU_GPIOA
+#define LED_TIMER_RCU       RCU_TIMER16
+#define LED_TIMER           TIMER16
+#define LED_IRQ             TIMER16_IRQn
+
+void led_config(void);
+
 #endif /* MAIN_H */