Index: firmware/App/Controllers/DGInterface.c
===================================================================
diff -u -r99291dfcff27720fde696dfe4d262dc003d85d1a -r46b163d19c65e8c21db7b0247bbb1af0dba1ece5
--- firmware/App/Controllers/DGInterface.c	(.../DGInterface.c)	(revision 99291dfcff27720fde696dfe4d262dc003d85d1a)
+++ firmware/App/Controllers/DGInterface.c	(.../DGInterface.c)	(revision 46b163d19c65e8c21db7b0247bbb1af0dba1ece5)
@@ -8,7 +8,7 @@
 * @file    DGInterface.c
 *
 * @author  (last)      Dara Navaei
-* @date    (last)      15-Jul-2022
+* @date    (last)      22-Sep-2022
 *
 * @author  (original)  Sean
 * @date    (original)  08-Apr-2020
@@ -55,7 +55,7 @@
 static U32 dgSubMode;                                                       ///< Current state (sub-mode) of current DG operation mode.
 static BOOL dgStartCommandSent;                                             ///< Flag indicates command to start DG has been sent.
 static BOOL dgStarted;                                                      ///< Flag indicates whether we have commanded the DG to start or stop.
-static BOOL dgTrimmerHeaterOn = FALSE;                          ///< Flag indicates whether we have commanded the DG to start or stop the trimmer heater.
+static BOOL dgTrimmerHeaterOn;                                              ///< Flag indicates whether we have commanded the DG to start or stop the trimmer heater.
 
 // State machine states
 static U32 timeStartMS = 0; // TODO is this needed?
@@ -126,26 +126,26 @@
     dgCurrentOpMode                 = DG_MODE_INIT;
     dgSubMode                       = 0;
     dgStartCommandSent              = FALSE;
-    dgDialysateFlowRateMlMin        = 0.0;
+    dgDialysateFlowRateMlMin        = 0.0F;
     dgDialysateFlowDataFreshFlag    = FALSE;
 
     // initialize load cell weights
     for ( i = 0; i < NUM_OF_LOAD_CELLS; i++ )
     {
-        loadCellWeightInGrams[ i ].data       = 0.0;
-        loadCellWeightInGrams[ i ].ovInitData = 0.0;
-        loadCellWeightInGrams[ i ].ovData     = 0.0;
+        loadCellWeightInGrams[ i ].data       = 0.0F;
+        loadCellWeightInGrams[ i ].ovInitData = 0.0F;
+        loadCellWeightInGrams[ i ].ovData     = 0.0F;
         loadCellWeightInGrams[ i ].override   = 0;
     }
     // initialize reservoirs weights
     for ( i = 0; i < NUM_OF_DG_RESERVOIRS; i++ )
     {
-        lgFilteredReservoirWeightInGrams[ i ] = 0.0;
+        lgFilteredReservoirWeightInGrams[ i ] = 0.0F;
 
         for ( j = 0; j < SIZE_OF_LARGE_LOAD_CELL_AVG; j++ )
         {
-            lgLoadCellReadings[ i ][ j ]       = 0.0;
-            lgLoadCellBackupReadings[ i ][ j ] = 0.0;
+            lgLoadCellReadings[ i ][ j ]       = 0.0F;
+            lgLoadCellBackupReadings[ i ][ j ] = 0.0F;
         }
     }
 
@@ -158,10 +158,10 @@
     }
 
     lgLoadCellReadingsIdx                           = 0;
-    lgLoadCellReadingsTotal[ DG_RESERVOIR_1 ]       = 0.0;
-    lgLoadCellReadingsTotal[ DG_RESERVOIR_2 ]       = 0.0;
-    lgLoadCellBackupReadingsTotal[ DG_RESERVOIR_1 ] = 0.0;
-    lgLoadCellBackupReadingsTotal[ DG_RESERVOIR_2 ] = 0.0;
+    lgLoadCellReadingsTotal[ DG_RESERVOIR_1 ]       = 0.0F;
+    lgLoadCellReadingsTotal[ DG_RESERVOIR_2 ]       = 0.0F;
+    lgLoadCellBackupReadingsTotal[ DG_RESERVOIR_1 ] = 0.0F;
+    lgLoadCellBackupReadingsTotal[ DG_RESERVOIR_2 ] = 0.0F;
 
     initPersistentAlarm( ALARM_ID_HD_DIALYSATE_TEMP_OUT_OF_HIGH_SAFETY_RANGE, DIALYSATE_TEMP_HIGH_SAFETY_TIMEOUT_MS, DIALYSATE_TEMP_HIGH_SAFETY_TIMEOUT_MS );
     initPersistentAlarm( ALARM_ID_HD_DIALYSATE_TEMP_OUT_OF_LOW_SAFETY_RANGE, DIALYSATE_TEMP_LOW_SAFETY_TIMEOUT_MS, DIALYSATE_TEMP_LOW_SAFETY_TIMEOUT_MS );
@@ -883,6 +883,19 @@
 
 /*********************************************************************//**
  * @brief
+ * The cmdSetDGToServiceMode function sends a request to DG to transition
+ * to service mode.
+ * @details Inputs: none
+ * @details Outputs: none
+ * @return none
+ *************************************************************************/
+void cmdSetDGToServiceMode( void )
+{
+    sendDGServiceModeRequest();
+}
+
+/*********************************************************************//**
+ * @brief
  * The handleDGCommandResponse function processes the latest DG command response.
  * @details Inputs: none
  * @details Outputs: process command response from DG
@@ -948,8 +961,8 @@
  * @brief
  * The checkDialysateTemperature function checks the dialysate temperature
  * reported by DG and alarm if temperature is out of range.
- * @details Inputs: dgTrimmerTempSet, dgDialysateTemp, dgRedundantDialysateTemp
- * @details Outputs: alarm if dialysate temperature is out of accepted range
+ * @details Inputs: dgTrimmerTempSet, dgDialysateTemp
+ * @details Outputs: none
  * @return none
  *************************************************************************/
 void checkDialysateTemperature( void )
@@ -966,7 +979,7 @@
 #endif
     {
         checkPersistentAlarm( ALARM_ID_HD_DIALYSATE_TEMP_OUT_OF_HIGH_SAFETY_RANGE, isTDiTempAboveHighSafety, dgDialysateTemp, DIALYSATE_TEMP_HIGH_SAFETY_LIMIT_C );
-        checkPersistentAlarm( ALARM_ID_HD_DIALYSATE_TEMP_OUT_OF_LOW_SAFETY_RANGE, isTDiTempAboveLowSafety, dgDialysateTemp, DIALYSATE_TEMP_LOW_SAFETY_LIMIT_C );
+        checkPersistentAlarm( ALARM_ID_HD_DIALYSATE_TEMP_OUT_OF_LOW_SAFETY_RANGE,  isTDiTempAboveLowSafety,  dgDialysateTemp, DIALYSATE_TEMP_LOW_SAFETY_LIMIT_C );
 
         checkPersistentAlarm( ALARM_ID_HD_DIALYSATE_TEMP_ABOVE_TARGET_TEMP, isTDiTempAboveDialysateTarget, dgDialysateTemp, TDiHigh );
         checkPersistentAlarm( ALARM_ID_HD_DIALYSATE_TEMP_BELOW_TARGET_TEMP, isTDiTempBelowDialysateTarget, dgDialysateTemp, TDiLow );