diff --git a/src/FxEngine/FxEngine.c b/src/FxEngine/FxEngine.c
index c3bd34e..006ab72 100644
--- a/src/FxEngine/FxEngine.c
+++ b/src/FxEngine/FxEngine.c
@@ -1,14 +1,21 @@
 #include "FxEngine.h"
-
+#include <libprof.h>
 #include <display.h>
 
-
-static int time_last_frame=0;
-static int frame_interval=0;
-
+static uint32_t frame_interval=0; // in milliseconds
+static bool loaded_before=false;
 
 void FE_new_frame()
 {
+	if (loaded_before)
+		prof_leave(0);
+	else
+	{
+		prof_init(1,0);
+		loaded_before=true;
+	}
+	frame_interval=prof_time(0);
+	prof_enter(0);
 	// add frame changing -- with timeGR, wait answer on Planete Casio
 
 	FE_move(); // Not implemented yet !
@@ -18,6 +25,9 @@ void FE_new_frame()
 	dclear();
 }
 
+int FE_get_fps()
+{return 1000/frame_interval;}
+
 static void FE_move() // call at each frame
 {
 	// TODO with math functions, not implemented yet !
diff --git a/src/FxEngine/FxEngine.h b/src/FxEngine/FxEngine.h
index cf0f8b5..3cdcb64 100644
--- a/src/FxEngine/FxEngine.h
+++ b/src/FxEngine/FxEngine.h
@@ -8,6 +8,7 @@ extern float FE_dh,FE_dv,FE_roulis;
 extern FE_Position FE_user={0,0,0};
 
 void FE_new_frame(); // calls move function
-// int  FE_get_fps();
+int  FE_get_fps();
+
 
 #endif
\ No newline at end of file