Index: firmware/App/Services/Reservoirs.h
===================================================================
diff -u -r8059b3b67364c3593091a23266f33186430ffe26 -re86af65442a36724461317980814f0868bd8c995
--- firmware/App/Services/Reservoirs.h	(.../Reservoirs.h)	(revision 8059b3b67364c3593091a23266f33186430ffe26)
+++ firmware/App/Services/Reservoirs.h	(.../Reservoirs.h)	(revision e86af65442a36724461317980814f0868bd8c995)
@@ -14,32 +14,32 @@
 * @date (original) 18-Mar-2020
 *
 ***************************************************************************/
-
-#ifndef __RESERVOIRS_H__
-#define __RESERVOIRS_H__
-
-#include "DGCommon.h"
-
-/**
- *  @defgroup Reservoirs Reservoirs
- *  @brief Reservoirs service module. Maintains reservoir set points and handles reservoir related commands from the HD.
- *
- *  @addtogroup Reservoirs
- *  @{
- */
-
-// ********** public definitions **********
-
-/// Enumeration of reservoirs.
-typedef enum Reservoirs
-{
-    RESERVOIR_1 = 0,        ///< Reservoir number 1
-    RESERVOIR_2,            ///< Reservoir number 2
-    NUM_OF_RESERVOIRS       ///< Number of reservoirs
-} RESERVOIR_ID_T;
 
+#ifndef __RESERVOIRS_H__
+#define __RESERVOIRS_H__
+
+#include "DGCommon.h"
+#include "DGDefs.h"
+
+/**
+ *  @defgroup Reservoirs Reservoirs
+ *  @brief Reservoirs service module. Maintains reservoir set points and handles reservoir related commands from the HD.
+ *
+ *  @addtogroup Reservoirs
+ *  @{
+ */
+
+// ********** public definitions **********
+
 #pragma pack(push,1)
 
+/// Fill command data structure.
+typedef struct
+{
+    U32 fillToVolumeMl;     ///< Target volume to fill to (in mL)
+    U32 cmd;                ///< General command (start/stop)
+} FILL_CMD_T;
+
 /// Drain command data structure.
 typedef struct
 {
@@ -55,26 +55,38 @@
     U32 rejectCode;         ///< Reason code for rejecting the command
 } DG_CMD_RESPONSE_T;
 
+/// Reservoir data struct.
+typedef struct
+{
+    U32 activeReservoir;    ///< Active reservoir ID
+    U32 fillToVolumeMl;     ///< Volume target to fill to
+    U32 drainToVolumeMl;    ///< Volume target to drain to
+} RESERVOIR_DATA_T;
+
 #pragma pack(pop)
 
 // ********** public function prototypes **********
 
 void initReservoirs( void );
 void execReservoirs( void );
-
-void setActiveReservoirCmd( RESERVOIR_ID_T resID );    // handle switch reservoirs command from HD
-void startFillCmd( U32 fillToVolMl );                  // handle fill command from HD
-void stopFillCmd( void );                              // handle stop fill command from HD
-void startDrainCmd( DRAIN_CMD_T drainCmd );            // handle drain command from HD
-void stopDrainCmd( void );                             // handle stop drain command from HD
-
-RESERVOIR_ID_T getInactiveReservoir( void );
-BOOL hasTargetFillVolumeBeenReached( RESERVOIR_ID_T reservoirId );
-BOOL hasTargetDrainVolumeBeenReached( RESERVOIR_ID_T reservoirId , U32 timeout );
 
-void resetReservoirLoadCellsOffset( RESERVOIR_ID_T reservoirId );
+void setActiveReservoirCmd( DG_RESERVOIR_ID_T resID );              // handle switch reservoirs command from HD
+void changeValveSettingCmd( DG_VALVE_SETTING_ID_T valveSettingID ); // handle valve setting change command from HD
+void startFillCmd( U32 fillToVolMl );                               // handle fill command from HD
+void stopFillCmd( void );                                           // handle stop fill command from HD
+void startDrainCmd( DRAIN_CMD_T drainCmd );                         // handle drain command from HD
+void stopDrainCmd( void );                                          // handle stop drain command from HD
+
+void tareReservoir( void );
+void resetReservoirsLowestWeight( void );
+
+DG_RESERVOIR_ID_T getInactiveReservoir( void );
+F32 getReservoirWeight( DG_RESERVOIR_ID_T reservoirId );
+
+BOOL hasTargetFillVolumeBeenReached( DG_RESERVOIR_ID_T reservoirId );
+BOOL hasTargetDrainVolumeBeenReached( DG_RESERVOIR_ID_T reservoirId , U32 timeout );
 
-BOOL testSetDGActiveReservoirOverride( RESERVOIR_ID_T value );
+BOOL testSetDGActiveReservoirOverride( DG_RESERVOIR_ID_T value );
 BOOL testResetDGActiveReservoirOverride( void );
 BOOL testSetReservoirFillVolumeMlOverride( U32 value );
 BOOL testResetReservoirFillVolumeMlOverride( void );