Index: firmware/App/Controllers/Valves.h
===================================================================
diff -u -r975a29bff552a9e657364bd36b11c4d491cf7fae -r2d5157c59ced0866aaa32d9722d6f1ba28b0b18d
--- firmware/App/Controllers/Valves.h	(.../Valves.h)	(revision 975a29bff552a9e657364bd36b11c4d491cf7fae)
+++ firmware/App/Controllers/Valves.h	(.../Valves.h)	(revision 2d5157c59ced0866aaa32d9722d6f1ba28b0b18d)
@@ -8,7 +8,8 @@
 /**
  *  @defgroup Valves Valves
  *  @brief Valves module
- *  Driver that runs the valves in HD.
+ *  Driver that runs the valves in HD. The driver can home the valves
+ *  as well as setting a position.
  *
  *  @addtogroup Valves
  *  @{
@@ -50,8 +51,10 @@
     S16 posA;                          ///< Calculated Position A
     S16 posB;                          ///< Calculated Position B
     U32 pwm;                           ///< Valve PWM in the bypass mode
+    U32 airTrapValve;                  ///< Air trap valve status
 
 } HD_VALVE_DATA_T;
+#pragma pack(pop)
 
 /// HD valves PWM override payload
 typedef struct
@@ -61,7 +64,6 @@
     U32  pwm;                          ///< Valve PWM
     U32  direction;                    ///< Valve direction
 } OVERRIDE_VALVES_PWM_DIR_SET_PAYLOAD_T;
-#pragma pack(pop)
 
 // ********** public function prototypes *********
 
@@ -71,14 +73,16 @@
 
 void execValves( void );
 
-void homeValve( VALVE_T valve );
+BOOL homeValve( VALVE_T valve );
 
 BOOL setValvePosition( VALVE_T valve, VALVE_POSITION_T position );
 
 VALVE_POSITION_T getValvePosition( VALVE_T valve );
 
 void setValveAirTrap( OPN_CLS_STATE_T state );
 
+OPN_CLS_STATE_T getValveAirTrapStatus( void );
+
 BOOL testSetValvesDataPublishInterval( U32 value );
 
 BOOL testResetValvesDataPublishInterval( void );