From c1f247d0f23173c77a350324ddf0495ffb935860 Mon Sep 17 00:00:00 2001
From: Wojtek Kosior <kwojtus@protonmail.com>
Date: Tue, 19 Nov 2019 17:55:43 +0100
Subject: guard against multiple-inclusion of headers

---
 uart.h | 5 +++++
 1 file changed, 5 insertions(+)

(limited to 'uart.h')

diff --git a/uart.h b/uart.h
index 6430cb1..ec29d47 100644
--- a/uart.h
+++ b/uart.h
@@ -1,3 +1,6 @@
+#ifndef UART_H
+#define UART_H
+
 #include <stddef.h>
 #include <stdint.h>
 #include <global.h>
@@ -39,3 +42,5 @@ void uart_init();
 void uart_putc(unsigned char c);
 unsigned char uart_getc();
 void uart_puts(const char* str);
+
+#endif // UART_H
-- 
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