Index: firmware/App/Controllers/AirTrap.h
===================================================================
diff -u -r1a36e9bd718b40ceaee21dd12eca2da353828e30 -rf3d625e2593ced120c4a98b9ed7e28b132445642
--- firmware/App/Controllers/AirTrap.h	(.../AirTrap.h)	(revision 1a36e9bd718b40ceaee21dd12eca2da353828e30)
+++ firmware/App/Controllers/AirTrap.h	(.../AirTrap.h)	(revision f3d625e2593ced120c4a98b9ed7e28b132445642)
@@ -30,7 +30,9 @@
  *  @{
  */
 
-// ********** public definitions **********
+// ********** public definitions **********
+
+#define AIR_TRAP_FILL_BLOOD_FLOW_RATE  150  ///< Blood flow rate (mL/min) at which an air trap fill is done.
 
 /// Enumeration of air trap level sensors monitored by this module.
 typedef enum AirTrapLevelSensors
@@ -68,6 +70,7 @@
 void startAirTrapControl( void );
 void endAirTrapControl( void );
 BOOL isAirTrapControlling( void );
+BOOL isAirTrapFillInProgress( void );
 
 AIR_TRAP_LEVELS_T getAirTrapLevel( AIR_TRAP_LEVEL_SENSORS_T sensor );
 AIR_TRAP_LEVELS_T getRawAirTrapLevel( AIR_TRAP_LEVEL_SENSORS_T sensor );