Index: firmware/App/Controllers/DGInterface.h
===================================================================
diff -u -r563f516a81cb41290008f93b33e7cf5e121717db -r1240b612f790f931825aba86ec37f37eccce9336
--- firmware/App/Controllers/DGInterface.h	(.../DGInterface.h)	(revision 563f516a81cb41290008f93b33e7cf5e121717db)
+++ firmware/App/Controllers/DGInterface.h	(.../DGInterface.h)	(revision 1240b612f790f931825aba86ec37f37eccce9336)
@@ -40,75 +40,75 @@
 /// Enumeration of DG pressure sensors.
 typedef enum DG_PressureSensors
 {
-    DG_PRESSURE_SENSOR_RO_PUMP_INLET = 0,          ///< RO pump pressure sensor.
-    DG_PRESSURE_SENSOR_RO_PUMP_OUTLET,             ///< RO pump pressure sensor.
-    DG_PRESSURE_SENSOR_DRAIN_PUMP_INLET,           ///< Drain pump inlet pressure.
-    DG_PRESSURE_SENSOR_DRAIN_PUMP_OUTLET,          ///< Drain pump outlet pressure.
-    NUM_OF_DG_PRESSURE_SENSORS                     ///< Number of pressure sensors.
+    DG_PRESSURE_SENSOR_RO_PUMP_INLET = 0,           ///< RO pump pressure sensor
+    DG_PRESSURE_SENSOR_RO_PUMP_OUTLET,              ///< RO pump pressure sensor
+    DG_PRESSURE_SENSOR_DRAIN_PUMP_INLET,            ///< Drain pump inlet pressure
+    DG_PRESSURE_SENSOR_DRAIN_PUMP_OUTLET,           ///< Drain pump outlet pressure
+    NUM_OF_DG_PRESSURE_SENSORS                      ///< Number of pressure sensors
 } DG_PRESSURE_SENSORS_T;
 
 /// Payload record structure for an RO pump data message.
 typedef struct
 {
-    U32 setPtPSI;
-    F32 measFlowRateMlMin;
-    F32 setPWMDutyCyclePct;
+    U32 setPtPSI;                                   ///< RO pump set target pressure
+    F32 measFlowRateMlMin;                          ///< RO pump measured flow rate in mL per min
+    F32 setPWMDutyCyclePct;                         ///< RO pump set PWM duty cycle percent
 } DG_RO_PUMP_DATA_PAYLOAD_T;
 
 /// Payload record structure for a drain pump data message.
 typedef struct
 {
-    U32 setPtRPM;
-    F32 setDAC;
+    U32 setPtRPM;                                   ///< Drain pump set RPM value
+    F32 setDAC;                                     ///< Drain pump set DAC value
 } DG_DRAIN_PUMP_DATA_PAYLOAD_T;
 
 /// Payload record structure for a DG pressures data message.
 typedef struct
 {
-    F32 roInPSI;
-    F32 roOutPSI;
-    F32 drainInPSI;
-    F32 drainOutPSI;
+    F32 roInPSI;                                    ///< DG inlet pressure in PSI
+    F32 roOutPSI;                                   ///< DG outlet pressure in PSI
+    F32 drainInPSI;                                 ///< DG drain inlet pressure in PSI
+    F32 drainOutPSI;                                ///< DG drain outlet pressure in PSI
 } DG_PRESSURES_DATA_PAYLOAD_T;
 
 /// Payload record structure for a reservoirs data message.
 typedef struct
 {
-    U32 resID;
-    U32 setFillToVolumeMl;
-    U32 setDrainToVolumeMl;
+    U32 resID;                                      ///< Active reservoir ID
+    U32 setFillToVolumeMl;                          ///< Reservoir set fill to target volume in ml
+    U32 setDrainToVolumeMl;                         ///< Reservoir set drain to target volume in ml
 } DG_RESERVOIRS_DATA_PAYLOAD_T;
 
 /// Payload record structure for DG temperature sensors data message.
 typedef struct
 {
-    F32 TPi;
-    F32 TPo;
-    F32 TD1;
-    F32 TD2;
-    F32 TRo;
-    F32 TDi;
-    F32 HtrPrimThermo;
-    F32 HtrTrimThermo;
-    F32 HtrPrimColdJunc;
-    F32 HtrTrimColdJunc;
-    F32 HtrPrimInternal;
-    F32 HtrTrimInternal;
+    F32 TPi;                                        ///< Inlet primary heaters temperature sensor
+    F32 TPo;                                        ///< Outlet primary heaters temperature sensor
+    F32 TD1;                                        ///< Conductivity sensor 1 temperature sensor
+    F32 TD2;                                        ///< Conductivity sensor 2 temperature sensor
+    F32 TRo;                                        ///< Outlet redundant temperature sensor
+    F32 TDi;                                        ///< Inlet dialysate temperature sensor
+    F32 HtrPrimThermo;                              ///< Primary heaters internal temperature sensor
+    F32 HtrTrimThermo;                              ///< Trimmer heater internal temperature sensor
+    F32 HtrPrimColdJunc;                            ///< Primary heaters cold junction temperature sensor
+    F32 HtrTrimColdJunc;                            ///< Trimmer heater cold junction temperature sensor
+    F32 HtrPrimInternal;                            ///< Primary heaters internal temperature
+    F32 HtrTrimInternal;                            ///< Trimmer heater internal temperature
 } DG_TEMPERATURES_T;
 
 /// Payload record structure for a drain reservoir command message.
 typedef struct
 {
-    U32  drainToVolumeML;
-    BOOL tareLoadCells;
+    U32  drainToVolumeML;                           ///< Drain to target volume in ml
+    BOOL tareLoadCells;                             ///< Flag indicates to tare load cells or not
 } DRAIN_RESERVOIR_CMD_PAYLOAD_T;
 
 /// DG command response data record structure.
 typedef struct
 {
-    U32 commandID;          ///< The command DG is responding to
-    BOOL rejected;          ///< Flag indicates if the command has been rejected
-    U32 rejectCode;         ///< Reason code for rejecting the command
+    U32 commandID;                                  ///< The command DG is responding to
+    BOOL rejected;                                  ///< Flag indicates if the command has been rejected
+    U32 rejectCode;                                 ///< Reason code for rejecting the command
 } DG_CMD_RESPONSE_T;
 
 // ********** public function prototypes **********