Index: firmware/App/Controllers/DGInterface.c
===================================================================
diff -u -rdd1a9a6f5e43a5da27f4d51f56388f7d019cc43d -r403a5ac7320f57617ef6fdaf71756ca139cd3b02
--- firmware/App/Controllers/DGInterface.c	(.../DGInterface.c)	(revision dd1a9a6f5e43a5da27f4d51f56388f7d019cc43d)
+++ firmware/App/Controllers/DGInterface.c	(.../DGInterface.c)	(revision 403a5ac7320f57617ef6fdaf71756ca139cd3b02)
@@ -71,14 +71,13 @@
 static F32 lgFilteredReservoirWeightInGrams[ NUM_OF_DG_RESERVOIRS ];
 
 // Load cell filtering data
-/// Holds load cell samples for large load cell moving average.
-static F32 lgLoadCellReadings[ NUM_OF_DG_RESERVOIRS ][ SIZE_OF_LARGE_LOAD_CELL_AVG ];
-static U32 lgLoadCellReadingsIdx = 0;                               ///< Index for next sample in large load cell rolling average sample array.
-static F32 lgLoadCellReadingsTotal[ NUM_OF_DG_RESERVOIRS ];         ///< Rolling total - used to calc large load cell moving average.
+static F32 lgLoadCellReadings[ NUM_OF_DG_RESERVOIRS ][ SIZE_OF_LARGE_LOAD_CELL_AVG ];  ///< Holds load cell samples for large load cell moving average.
+static U32 lgLoadCellReadingsIdx = 0;                           ///< Index for next sample in large load cell rolling average sample array.
+static F32 lgLoadCellReadingsTotal[ NUM_OF_DG_RESERVOIRS ];     ///< Rolling total - used to calc large load cell moving average.
 
 // DG Dialysate flow rate
-static F32 dgDialysateFlowRateMlMin = 0.0;                          ///< Latest dialysate flow rate reported by the DG.
-static BOOL dgDialysateFlowDataFreshFlag = FALSE;                   ///< Flag to signal the execDialInFlowMonitor() to process fresh flow rate data
+static volatile F32 dgDialysateFlowRateMlMin = 0.0;             ///< Latest dialysate flow rate reported by the DG.
+static volatile BOOL dgDialysateFlowDataFreshFlag = FALSE;      ///< Flag to signal the execDialInFlowMonitor() to process fresh flow rate data
 
 // Reservoir data
 static DG_RESERVOIR_ID_T dgActiveReservoir = DG_RESERVOIR_2;    ///< Latest active reservoir reported by the DG.