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-rw-r--r--src/gpio.zig6
1 files changed, 6 insertions, 0 deletions
diff --git a/src/gpio.zig b/src/gpio.zig
index c0bf6ba..9313c38 100644
--- a/src/gpio.zig
+++ b/src/gpio.zig
@@ -1,3 +1,9 @@
+// Copyright (C) 2024 Clyne Sullivan <clyne@bitgloo.com>
+//
+// Distributed under the GNU GPL v3 or later. You should have received a copy of
+// the GNU General Public License along with this program.
+// If not, see <https://www.gnu.org/licenses/>.
+
const mode = enum(u32) {
alternate_0 = 0,
alternate_1,