Index: firmware/App/Services/Reservoirs.h
===================================================================
diff -u -r656f3ada9ab5dff1d6c377d237e799f3ab5ba7c3 -r752ec32e48ba27c3939d7e8ec56091cb917e3eef
--- firmware/App/Services/Reservoirs.h	(.../Reservoirs.h)	(revision 656f3ada9ab5dff1d6c377d237e799f3ab5ba7c3)
+++ firmware/App/Services/Reservoirs.h	(.../Reservoirs.h)	(revision 752ec32e48ba27c3939d7e8ec56091cb917e3eef)
@@ -20,6 +20,7 @@
 
 #include "DGCommon.h"
 #include "DGDefs.h"
+#include "HDDefs.h"
 #include "NVDataMgmt.h"
 
 /**
@@ -70,6 +71,13 @@
     F32 dialysateFlowLPM;                               ///< Dialysate flow rate in L/min
 } DG_CMD_DIALYSATE_HEATING_PARAMS_T;
 
+/// HD mode and HD submode
+typedef struct
+{
+    HD_OP_MODE_T hdMode;                                ///< HD mode
+    U32 hdSubMode;                                      ///< HD submode
+} HD_MODE_SUB_MODE_T;
+
 /// Reservoir data struct.
 typedef struct
 {
@@ -104,6 +112,9 @@
 void startDrainCmd( DRAIN_CMD_T drainCmd );                         // handle drain command from HD
 void stopDrainCmd( void );                                          // handle stop drain command from HD
 
+void setHDOperationMode( U32 mode, U32 subMode );
+void getHDOperationMode( HD_MODE_SUB_MODE_T* mode );
+
 DG_RESERVOIR_ID_T getInactiveReservoir( void );
 F32  getReservoirWeight( DG_RESERVOIR_ID_T reservoirId );