diff --git a/soft/PjtKEIL_StepSon/Src/GestionSon.h b/soft/PjtKEIL_StepSon/Src/GestionSon.h
new file mode 100644
index 0000000..d6e4710
--- /dev/null
+++ b/soft/PjtKEIL_StepSon/Src/GestionSon.h
@@ -0,0 +1,7 @@
+#ifndef GESTION_SON
+#define GESTION_SON
+
+void StartSon(void);
+void GestionSon(void);
+
+#endif
\ No newline at end of file