Index: firmware/App/Controllers/DGInterface.h
===================================================================
diff -u -r6f8273cb2f98b9fecce42d776b0fb6580b315d1f -rec0ae6f3e8dd68564f9ae0d73dc996f58c86d115
--- firmware/App/Controllers/DGInterface.h	(.../DGInterface.h)	(revision 6f8273cb2f98b9fecce42d776b0fb6580b315d1f)
+++ firmware/App/Controllers/DGInterface.h	(.../DGInterface.h)	(revision ec0ae6f3e8dd68564f9ae0d73dc996f58c86d115)
@@ -42,43 +42,43 @@
 /// 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.
@@ -113,16 +113,16 @@
 /// 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 **********