Index: firmware/App/Controllers/DGInterface.h
===================================================================
diff -u -rf2cecb1dae0cfccc768b321f1d0cdec9a73c5824 -r8f4112033e1c247f629202cdc97389ffd5cb0170
--- firmware/App/Controllers/DGInterface.h	(.../DGInterface.h)	(revision f2cecb1dae0cfccc768b321f1d0cdec9a73c5824)
+++ firmware/App/Controllers/DGInterface.h	(.../DGInterface.h)	(revision 8f4112033e1c247f629202cdc97389ffd5cb0170)
@@ -55,6 +55,12 @@
     F32 setPWMDutyCyclePct;                         ///< RO pump set PWM duty cycle percent
 } DG_RO_PUMP_DATA_PAYLOAD_T;
 
+/// Dialysate flow meter data struct.
+typedef struct
+{
+    F32 measuredDialysateFlowRate;                  ///< Dialysate flow meter rate average measurement
+} DIALYSATE_FLOW_METER_DATA_T;
+
 /// Payload record structure for a drain pump data message.
 typedef struct
 {
@@ -149,7 +155,8 @@
 BOOL hasDGCompletedReservoirSwitch( void );
 F32 getDGPressure( DG_PRESSURE_SENSORS_T sensorID );
 U32 getDGROPumpPressureSetPt( void );
-F32 getDGROPumpFlowRateMlMin( void );
+F32 getDGROPumpFlowRateMlMin( void );
+F32 getDGDialysateFlowRateMlMin( void );
 U32 getDGDrainPumpRPMSetPt( void );
 F32 getLoadCellWeight( LOAD_CELL_ID_T loadCellID );
 F32 getReservoirWeight( DG_RESERVOIR_ID_T resID );
@@ -162,7 +169,8 @@
 void setDGDialysateTemperatures( F32 primaryHtrTemp, F32 trimmerHtrTemp );
 void setDGReservoirsData( DG_RESERVOIR_ID_T resID, U32 fillVol, U32 drainVol );
 void setDGPressures( F32 roIn, F32 roOut, F32 drainIn, F32 drainOut );
-void setDGROPumpData( U32 presSetPt, F32 flowRate );
+void setDGROPumpData( U32 presSetPt, F32 flowRate );
+void setDialysateFlowData( F32 flowRate );
 void setDGDrainPumpData( U32 rpmSetPt );
 void setNewLoadCellReadings( F32 res1Primary, F32 res1Backup, F32 res2Primary, F32 res2Backup );
 void setDGDisinfectsStates( DG_DISINFECT_UI_STATES_T states );