-#define SENSORLIST_POSITION_RIGHT 0
-#define SENSORLIST_POSITION_LEFT 1
-#define SENSORLIST_POSITION_TOP 2
-#define SENSORLIST_POSITION_BOTTOM 3
+enum sensorlist_position {
+ SENSORLIST_POSITION_RIGHT,
+ SENSORLIST_POSITION_LEFT,
+ SENSORLIST_POSITION_TOP,
+ SENSORLIST_POSITION_BOTTOM
+};