Index: firmware/App/Drivers/InternalADC.h
===================================================================
diff -u -ra49bd0780d97bb4ce04a9d7b128a6e3c2df044e1 -rebd11d01f826a08806d2f4984bd57e829371b687
--- firmware/App/Drivers/InternalADC.h	(.../InternalADC.h)	(revision a49bd0780d97bb4ce04a9d7b128a6e3c2df044e1)
+++ firmware/App/Drivers/InternalADC.h	(.../InternalADC.h)	(revision ebd11d01f826a08806d2f4984bd57e829371b687)
@@ -19,41 +19,46 @@
 
 #include "DGCommon.h"
 
+/**
+ *  @defgroup InternalADC InternalADC
+ *  @brief DG internal ADC module.
+ *
+ *  @addtogroup InternalADC
+ *  @{
+ */
+
 // ********** public definitions **********
 
-#define INT_ADC_BITS_PER_CHANNEL        12
-#define INT_ADC_FULL_SCALE_BITS         4096
-#ifndef BREADBOARD_TARGET
-    #define INT_ADC_REF_V                   3.0
-#else
-    #define INT_ADC_REF_V                   3.3
-#endif
+#define INT_ADC_BITS_PER_CHANNEL        12                      ///< DG internal ADC bits per channel.
+#define INT_ADC_FULL_SCALE_BITS         4096                    ///< DG internal ADC full scale range.
+#define INT_ADC_REF_V                   3.0                     ///< DG internal ADC reference voltage.
 
+/// Enumeration of DG internal ADC channels.
 typedef enum Int_ADC_Channels
 {
-    INT_ADC_NOT_USED = 0,
-    INT_ADC_RO_PUMP_INLET_PRESSURE,
-    INT_ADC_RO_PUMP_OUTLET_PRESSURE,
-    INT_ADC_DRAIN_PUMP_OUTLET_PRESSURE,
-    INT_ADC_DRAIN_PUMP_INLET_PRESSURE,
-    INT_ADC_CONCENTRATE_PUMP_1,
-    INT_ADC_CONCENTRATE_PUMP_2,
-    INT_ADC_PRIMARY_HEATER_24_VOLTS,
-    INT_ADC_TRIMMER_HEATER_24_VOLTS,
-    INT_ADC_BOARD_THERMISTOR,
-    INT_ADC_FPGA_1_8_VOLTS,
-    INT_ADC_FPGA_1_VOLT,
-    INT_ADC_PROCESSOR_1_8_VOLTS,
-    INT_ADC_PROCESSOR_1_2_VOLTS,
-    INT_ADC_SENSORS_3_3_VOLTS,
-    INT_ADC_SENSORS_5_VOLTS,
-    INT_ADC_SENSORS_6_VOLTS,
-    INT_ADC_LOGIC_5_VOLTS,
-    INT_ADC_3_3_VOLTS,
-    INT_ADC_REFERENCE_VOLTAGE,
-    INT_ADC_REF_IN1,
-    INT_ADC_REF_IN2,
-    NUM_OF_INT_ADC_CHANNELS
+    INT_ADC_NOT_USED = 0,                                       ///< DG internal ADC channel not used.
+    INT_ADC_RO_PUMP_INLET_PRESSURE,                             ///< DG internal ADC RO pump inlet pressure channel.
+    INT_ADC_RO_PUMP_OUTLET_PRESSURE,                            ///< DG internal ADC RO pump outlet pressure channel.
+    INT_ADC_DRAIN_PUMP_OUTLET_PRESSURE,                         ///< DG internal ADC drain pump outlet pressure channel.
+    INT_ADC_DRAIN_PUMP_INLET_PRESSURE,                          ///< DG internal ADC drain pump inlet pressure channel.
+    INT_ADC_CONCENTRATE_PUMP_1,                                 ///< DG internal ADC concentrate pump #1 channel.
+    INT_ADC_CONCENTRATE_PUMP_2,                                 ///< DG internal ADC concentrate pump #2 channel.
+    INT_ADC_PRIMARY_HEATER_24_VOLTS,                            ///< DG internal ADC primary heater 24 volt supply channel.
+    INT_ADC_TRIMMER_HEATER_24_VOLTS,                            ///< DG internal ADC trimmer heater 24 volt supply channel.
+    INT_ADC_BOARD_THERMISTOR,                                   ///< DG internal ADC DG board thermistor channel.
+    INT_ADC_FPGA_1_8_VOLTS,                                     ///< DG internal ADC DG FPGA 1.8 volt supply channel.
+    INT_ADC_FPGA_1_VOLT,                                        ///< DG internal ADC DG FPGA 1 volt supply channel.
+    INT_ADC_PROCESSOR_1_8_VOLTS,                                ///< DG internal ADC DG processor 1.8 volt supply channel.
+    INT_ADC_PROCESSOR_1_2_VOLTS,                                ///< DG internal ADC DG processor 1.2 volt supply channel.
+    INT_ADC_SENSORS_3_3_VOLTS,                                  ///< DG internal ADC DG sensors 3.3 volt supply channel.
+    INT_ADC_SENSORS_5_VOLTS,                                    ///< DG internal ADC DG sensors 5 volt supply channel.
+    INT_ADC_SENSORS_6_VOLTS,                                    ///< DG internal ADC DG sensors 6 volt supply channel.
+    INT_ADC_LOGIC_5_VOLTS,                                      ///< DG internal ADC DG logic 5 volt supply channel.
+    INT_ADC_3_3_VOLTS,                                          ///< DG internal ADC DG 3.3 volt supply channel.
+    INT_ADC_REFERENCE_VOLTAGE,                                  ///< DG internal ADC reference voltage channel.
+    INT_ADC_REF_IN1,                                            ///< DG internal ADC ??? channel.  TODO
+    INT_ADC_REF_IN2,                                            ///< DG internal ADC ??? channel.  TODO
+    NUM_OF_INT_ADC_CHANNELS                                     ///< Number of DG internal ADC channels
 } INT_ADC_CHANNEL_T;
 
 // ********** public function prototypes **********
@@ -62,4 +67,6 @@
 void execInternalADC( void );
 U16 getIntADCReading( INT_ADC_CHANNEL_T channel );
 
+/**@}*/
+
 #endif