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-rw-r--r--ports/stm32f4/src/port.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/ports/stm32f4/src/port.h b/ports/stm32f4/src/port.h
index 5007dee..ffbbe9e 100644
--- a/ports/stm32f4/src/port.h
+++ b/ports/stm32f4/src/port.h
@@ -4,4 +4,9 @@
*
*/
+#ifndef __PORT_H
+#define __PORT_H
+
#include "stm32f4xx_hal.h"
+
+#endif