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-rw-r--r--usb/usb.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/usb/usb.c b/usb/usb.c
index 5a76825..5f00fe0 100644
--- a/usb/usb.c
+++ b/usb/usb.c
@@ -1,3 +1,21 @@
+/*
+ * usb/usb.c -- USB 2.0 implementation
+ *
+ * Copyright (C) 2016-2017 Tomasz Kramkowski <tk@the-tk.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
#include <cm4.h>
#include <reg/gpio.h>
#include <reg/sim.h>