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-rw-r--r--src/system.cc5
1 files changed, 5 insertions, 0 deletions
diff --git a/src/system.cc b/src/system.cc
index 5eb3f77..273a8a4 100644
--- a/src/system.cc
+++ b/src/system.cc
@@ -1,3 +1,8 @@
+/*
+ * Copyright 2023 Birte Kristina Friesel
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
#include <avr/io.h>
#include <avr/interrupt.h>
#include <avr/wdt.h>