1 files changed, 15 insertions, 0 deletions
diff --git a/include/gpio.h b/include/gpio.h
index 46a8e15..58ebaa7 100644
--- a/include/gpio.h
+++ b/include/gpio.h
@@ -1,6 +1,21 @@
 /**
  * @file gpio.h
  * Abstracts gpio access, makes things easier
+ *
+ * Copyright (C) 2018 Clyne Sullivan
+ *
+ * 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 <https://www.gnu.org/licenses/>.
  */
 
 #ifndef GPIO_H_