diff --git a/Source/Display.cpp b/Source/Display.cpp
index 216c263..531e40c 100644
--- a/Source/Display.cpp
+++ b/Source/Display.cpp
@@ -154,6 +154,11 @@ namespace ElektronischeLast
     this->new_data = true;
   }
 
+  bool Display::ready_for_data(void)
+  {
+    return (this->current_state == StateIdle);
+  }
+
   bool Display::timer_elapsed(void)
   {
     return (this->timer < systick);
diff --git a/Source/Display.hpp b/Source/Display.hpp
index e6cff51..dccefe8 100644
--- a/Source/Display.hpp
+++ b/Source/Display.hpp
@@ -93,6 +93,7 @@ namespace ElektronischeLast
       void set_backlight(bool on);
       void set_cursor(Line_t line, std::uint32_t position);
       void print(const char* const string);
+      bool ready_for_data(void);
     private:
       State_t current_state;
       State_t next_state;