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Diffstat (limited to 'firmware/src/data_link.h')
-rw-r--r--firmware/src/data_link.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/firmware/src/data_link.h b/firmware/src/data_link.h
index 359cb2b..d2a25a1 100644
--- a/firmware/src/data_link.h
+++ b/firmware/src/data_link.h
@@ -1,3 +1,6 @@
+#ifndef DATA_LINK_H
+#define DATA_LINK_H
+
#include <sys/types.h>
#include <zephyr/device.h>
@@ -8,3 +11,5 @@
void dl_send_frame(const struct device *const uart_dev, uint8_t *buffer,
size_t len);
+
+#endif // DATA_LINK_H