Add include guards

diff --git a/include/extdrv/ws2812.h b/include/extdrv/ws2812.h
index f855751..acf86f2 100644 (file)
--- a/include/extdrv/ws2812.h
+++ b/include/extdrv/ws2812.h
@@ -57,6 +57,9 @@
  *   
  */
 
+#ifndef WS2812_H
+#define WS2812_H
+
 #include "lib/stdint.h"
 #include "core/pio.h"
 
@@ -108,3 +111,5 @@ void ws2812_clear(struct ws2812_conf* ws2812);
 /*     Alias for ws2812_clear */
 void ws2812_stop(struct ws2812_conf* ws2812);
 
+#endif /* WS2812_H */
+