Index: firmware/App/Services/Reservoirs.h
===================================================================
diff -u -r9826fc85bd1497ec617ae0e825f78b91972de2b3 -r98a1a2a624373a1d140daed0136522ab6e635237
--- firmware/App/Services/Reservoirs.h	(.../Reservoirs.h)	(revision 9826fc85bd1497ec617ae0e825f78b91972de2b3)
+++ firmware/App/Services/Reservoirs.h	(.../Reservoirs.h)	(revision 98a1a2a624373a1d140daed0136522ab6e635237)
@@ -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 );