diff --git a/Include/system/gpio.h b/Include/system/gpio.h
--- a/Include/system/gpio.h
+++ b/Include/system/gpio.h
@@ -9,6 +9,10 @@
 ////////////////////////////////////
 
 
+#define GPS_NOTEN_PORT GPIOA
+#define GPS_NOTEN_PIN GPIO_PIN_1
+#define GPS_NOTEN GPS_NOTEN_PORT , GPS_NOTEN_PIN
+
 
 void gpio_init(void);
 void gpio_schedule_shutdown(void);