Index: firmware/App/Controllers/PresOccl.c
===================================================================
diff -u -rd608769332d4ffe19f39a18caca14d6155f13e0a -r6f5bb3935a079cf48c836b2227db430c069bac40
--- firmware/App/Controllers/PresOccl.c	(.../PresOccl.c)	(revision d608769332d4ffe19f39a18caca14d6155f13e0a)
+++ firmware/App/Controllers/PresOccl.c	(.../PresOccl.c)	(revision 6f5bb3935a079cf48c836b2227db430c069bac40)
@@ -110,6 +110,8 @@
 #define SIZE_OF_LONG_ART_ROLLING_AVG        ( ( MS_PER_SECOND / TASK_GENERAL_INTERVAL ) * 10 )
 /// Measured arterial pressure is filtered w/ 1 second moving average for inline pressure.
 #define SIZE_OF_SHORT_ART_ROLLING_AVG       ( ( MS_PER_SECOND / TASK_GENERAL_INTERVAL ) * 1 )
+/// Measured arterial pressure is filtered w/ 10 second moving average for pressure compensation of flow.
+#define SIZE_OF_LONG_VEN_ROLLING_AVG        ( ( MS_PER_SECOND / TASK_GENERAL_INTERVAL ) * 10 )
 /// Measured venous pressure is filtered w/ 1 second moving average for inline pressure and unfiltered for occlusion detection.
 #define SIZE_OF_SHORT_VEN_ROLLING_AVG       ( ( MS_PER_SECOND / TASK_GENERAL_INTERVAL ) * 1 )
 
@@ -160,6 +162,7 @@
 static U32 stabilizationStartTimeMs;                                            ///< Timestamp taken when pressure limit stabilization began (ms).
 static F32 longFilteredArterialPressure;                                        ///< Measured arterial pressure after long (10 s) filter.
 static F32 shortFilteredArterialPressure;                                       ///< Measured arterial pressure after short (1 s) filter.
+static F32 longFilteredVenousPressure;                                          ///< Measured venous pressure after long (10 s) filter.
 static F32 shortFilteredVenousPressure;                                         ///< Measured venous pressure after short (1 s) filter.
 
 static U32 bloodPumpOcclusionAfterCartridgeInstall;                             ///< Measured blood pump occlusion reading taken after cartridge install.
@@ -176,10 +179,16 @@
 static F32 artPressureReadingsShortTotal = 0.0;                                 ///< Rolling total - used to calc average.
 static U32 artPressureReadingsShortCount = 0;                                   ///< Number of samples in flow rolling average buffer.
 
+static F32 venPressureReadingsLong[ SIZE_OF_LONG_VEN_ROLLING_AVG ];             ///< Holds flow samples for long venous pressure rolling average.
+static U32 venPressureReadingsLongIdx = 0;                                      ///< Index for next sample in rolling average array.
+static F32 venPressureReadingsLongTotal = 0.0;                                  ///< Rolling total - used to calc average.
+static U32 venPressureReadingsLongCount = 0;                                    ///< Number of samples in flow rolling average buffer.
+
 static F32 venPressureReadingsShort[ SIZE_OF_SHORT_VEN_ROLLING_AVG ];           ///< Holds flow samples for long arterial pressure rolling average.
 static U32 venPressureReadingsShortIdx = 0;                                     ///< Index for next sample in rolling average array.
 static F32 venPressureReadingsShortTotal = 0.0;                                 ///< Rolling total - used to calc average.
 static U32 venPressureReadingsShortCount = 0;                                   ///< Number of samples in flow rolling average buffer.
+
 static PRESSURE_SELF_TEST_STATE_T presOcclPostState;                            ///< Pressure self test post state.
 static HD_PRESSURE_SENSORS_CAL_RECORD_T pressureSensorsCalRecord;               ///< Pressure sensors calibration record.
 static HD_OCCLUSION_SENSORS_CAL_RECORD_T occlusionSensorsCalRecord;             ///< Occlusion sensors calibration record.
@@ -235,6 +244,7 @@
     venLowPresExemptAfterAirTrapFillTimerCtr = 0;
     longFilteredArterialPressure             = 0.0F;
     shortFilteredArterialPressure            = 0.0F;
+    longFilteredVenousPressure               = 0.0F;
     shortFilteredVenousPressure              = 0.0F;
     presOcclDataPublicationTimerCounter      = DATA_PUBLISH_COUNTER_START_COUNT;
     presOcclState                            = PRESSURE_WAIT_FOR_POST_STATE;
@@ -358,8 +368,8 @@
  *************************************************************************/
 void updatePressureLimitWindows( void )
 {
-    F32 filtArt = getFilteredArterialPressure();
-    F32 filtVen = getFilteredVenousPressure();
+    F32 filtArt = getLongFilteredArterialPressure();
+    F32 filtVen = getLongFilteredVenousPressure();
     S32 curArtPres = FLOAT_TO_INT_WITH_ROUND( filtArt );
     S32 curVenPres = FLOAT_TO_INT_WITH_ROUND( filtVen );
 
@@ -950,6 +960,19 @@
 {
     return shortFilteredVenousPressure;
 }
+
+/*********************************************************************//**
+ * @brief
+ * The getLongFilteredVenousPressure function gets the current long filtered
+ * venous pressure.
+ * @details Inputs: longFilteredVenousPressure
+ * @details Outputs: none
+ * @return the current long filtered venous pressure (in mmHg).
+ *************************************************************************/
+F32 getLongFilteredVenousPressure( void )
+{
+    return longFilteredVenousPressure;
+}
 
 /*********************************************************************//**
  * @brief
@@ -1008,6 +1031,17 @@
     artPressureReadingsShortCount = INC_CAP( artPressureReadingsShortCount, SIZE_OF_SHORT_ART_ROLLING_AVG );
     shortFilteredArterialPressure = artPressureReadingsShortTotal / (F32)artPressureReadingsShortCount;
 
+    // Long filter for venous pressure.
+    if ( venPressureReadingsLongCount >= SIZE_OF_LONG_VEN_ROLLING_AVG )
+    {
+        venPressureReadingsLongTotal -= venPressureReadingsLong[ venPressureReadingsLongIdx ];
+    }
+    venPressureReadingsLong[ venPressureReadingsLongIdx ] = venPres;
+    venPressureReadingsLongTotal += venPres;
+    venPressureReadingsLongIdx = INC_WRAP( venPressureReadingsLongIdx, 0, SIZE_OF_LONG_VEN_ROLLING_AVG - 1 );
+    venPressureReadingsLongCount = INC_CAP( venPressureReadingsLongCount, SIZE_OF_LONG_VEN_ROLLING_AVG );
+    longFilteredVenousPressure = venPressureReadingsLongTotal / (F32)venPressureReadingsLongCount;
+
     // Short filter for venous pressure.
     if ( venPressureReadingsShortCount >= SIZE_OF_SHORT_VEN_ROLLING_AVG )
     {
@@ -1035,14 +1069,16 @@
     {
         PRESSURE_OCCLUSION_DATA_T data;
 
-        data.arterialPressure = shortFilteredArterialPressure;
-        data.venousPressure   = shortFilteredVenousPressure;
-        data.bldPumpOcclusion = getMeasuredBloodPumpOcclusion();
-        data.presLimitState   = currPresLimitsState;
-        data.artMinLimit      = currentArterialMinLimit;
-        data.artMaxLimit      = currentArterialMaxLimit;
-        data.venMinLimit      = currentVenousMinLimit;
-        data.venMaxLimit      = currentVenousMaxLimit;
+        data.arterialPressure       = shortFilteredArterialPressure;
+        data.venousPressure         = shortFilteredVenousPressure;
+        data.bldPumpOcclusion       = getMeasuredBloodPumpOcclusion();
+        data.presLimitState         = currPresLimitsState;
+        data.artMinLimit            = currentArterialMinLimit;
+        data.artMaxLimit            = currentArterialMaxLimit;
+        data.venMinLimit            = currentVenousMinLimit;
+        data.venMaxLimit            = currentVenousMaxLimit;
+        data.arterialLongFilterPres = longFilteredArterialPressure;
+        data.venousLongFilterPres   = longFilteredVenousPressure;
 
         broadcastData( MSG_ID_PRESSURE_OCCLUSION_DATA, COMM_BUFFER_OUT_CAN_HD_BROADCAST, (U08*)&data, sizeof( PRESSURE_OCCLUSION_DATA_T ) );
         presOcclDataPublicationTimerCounter = 0;