Index: firmware/App/Drivers/GLXferPump.h
===================================================================
diff -u -r395522dffef1348e176564925656012f529c1910 -r4ed766fe84660297858a9af1651e93ff0c4d71f1
--- firmware/App/Drivers/GLXferPump.h	(.../GLXferPump.h)	(revision 395522dffef1348e176564925656012f529c1910)
+++ firmware/App/Drivers/GLXferPump.h	(.../GLXferPump.h)	(revision 4ed766fe84660297858a9af1651e93ff0c4d71f1)
@@ -33,14 +33,22 @@
 
 // ********** public definitions **********
 
-#define AIR_PUMP_MOTOR_OFF          0               ///< Power level setting (PWM) for H12 air pump to turn pump off.
-#define AIR_PUMP_MOTOR_MAX_PWM      60              ///< Power level setting (PWM) maximum for H12 air pump.
+#define AIR_PUMP_MOTOR_OFF            0.0F            ///< Power level setting (PWM) for H12 air pump to turn pump off.
+#define AIR_PUMP_DUTY_CYCLE_MIN       0.0F            ///< Air pump minimum duty cycle in percentage
+#define AIR_PUMP_DUTY_CYCLE_MAX       100.0F          ///< Air pump maximum duty cycle in percentage
+#define AIR_PUMP_DUTY_CYCLE_LIMIT     24.0F           ///< Air pump limit duty cycle in percentage from 1- 23 as invalid
+#define AIR_PUMP_MAX_PWM              250             ///< Air pump maximum PWM, FPGA ignores 251-255
 
 // ********** public function prototypes **********
 
 void initGasLiqXferPumpDriver( void );
-void setAirPumpMotorPower( U08 power );
-U08 getAirPumpMotorPower( void );
+void setAirPumpMotorPower( F32 power );
+F32 getAirPumpMotorPower( void );
+U16 getAirPumpMotorRPM( void );
+// TODO:remove after testing
+U16 getAirPumpMotorFPGARPM( void );
+// TODO:remove after testing
+U32 getAirPumpMotorScalarPower( void );
 
 BOOL testSetAirPump( MESSAGE_T *message );