Update calculate.h

2017-08-24 12:31:12 +00:00
parent 50c5686732
commit ac352ac1ca
1 changed files with 5 additions and 1 deletions
--- a/RaspberryPi/calculate.h
+++ b/RaspberryPi/calculate.h
@@ -1,4 +1,8 @@
-/* Include guard */
+#ifndef dht22_H
+#define dht22_H
+
 #include "dht22.h"

 double absoluteHumidity(sensor *sensor);
+
+#endif