--- a/main/task_user.h	Fri Nov 08 10:57:46 2019 +0100
+++ b/main/task_user.h	Fri Nov 08 22:40:15 2019 +0100
@@ -46,6 +46,16 @@
 bool user_busy(void);
 
 
+
+/**
+ * @brief Write messages on the screen during binary update.
+ * @param m1 Message 1 or NULL.
+ * @param m2 Message 2 or NULL.
+ */
+void screen_updating(char *m1, char *m2);
+
+
+
 /**
  * @brief The FreeRTOS task to run the user interface.
  */