Index: firmware/App/Controllers/PresOccl.c
===================================================================
diff -u -r46617afb446c35270b59e21085b270433d13d113 -r8cebc7f282f403c99f712d422454c15414b6fc73
--- firmware/App/Controllers/PresOccl.c	(.../PresOccl.c)	(revision 46617afb446c35270b59e21085b270433d13d113)
+++ firmware/App/Controllers/PresOccl.c	(.../PresOccl.c)	(revision 8cebc7f282f403c99f712d422454c15414b6fc73)
@@ -110,7 +110,8 @@
 
 /// Interval (in ms) at which to publish pressure/occlusion data to CAN bus.
 static OVERRIDE_U32_T presOcclDataPublishInterval = { PRES_OCCL_DATA_PUB_INTERVAL, PRES_OCCL_DATA_PUB_INTERVAL, 0, 0 };
-static OVERRIDE_F32_T arterialPressure = {0.0, 0.0, 0.0, 0 };                   ///< Measured arterial pressure.
+static OVERRIDE_F32_T arterialPressure = {0.0, 0.0, 0.0, 0 };                   ///< Measured arterial pressure.
+static OVERRIDE_F32_T arterialPressureOffset = {0.0, 0.0, 0.0, 0 };             ///< Calculated arterial pressure offset.
 static OVERRIDE_F32_T venousPressure = {0.0, 0.0, 0.0, 0 };                     ///< Measured venous pressure.
 static OVERRIDE_U32_T bloodPumpOcclusion = {0, 0, 0, 0 };                       ///< Measured blood pump occlusion pressure.
 static F32 longFilteredArterialPressure;                                        ///< Measured arterial pressure after long (10 s) filter.
@@ -362,7 +363,7 @@
         // Check for stale arterial pressure reading
         if ( FALSE == isPersistentAlarmTriggered( ALARM_ID_HD_VENOUS_PRESSURE_READ_TIMEOUT_ERROR, ( lastArterialPressureReadCtr == artReadCtr || artErrorCtr > 0 ) ) )
         {
-            arterialPressure.data = ARTERIAL_PRESSURE_V_PER_BIT * ( (F32)(artPres) / ( ARTERIAL_PRESSURE_SENSITIVITY * ARTERIAL_PRESSURE_V_BIAS ) );
+            arterialPressure.data = ARTERIAL_PRESSURE_V_PER_BIT * ( (F32)(artPres) / ( ARTERIAL_PRESSURE_SENSITIVITY * ARTERIAL_PRESSURE_V_BIAS ) ) + getF32OverrideValue( &arterialPressureOffset );
         }
         else
         {
@@ -985,6 +986,51 @@
     }
 
     return result;
-}
+}
+
+/*********************************************************************//**
+ * @brief
+ * The testSetBloodPumpOcclusionOverride function overrides the arterial
+ * pressure offset.
+ * @details Inputs: none
+ * @details Outputs: arterialPressureOffset
+ * @param value override arterial pressure offset with
+ * @return TRUE if override successful, FALSE if not
+ *************************************************************************/
+BOOL testSetArterialPressureOffsetOverride( F32 value )
+{
+    BOOL result = FALSE;
+
+    if ( TRUE == isTestingActivated() )
+    {
+        result = TRUE;
+        arterialPressureOffset.ovData = value;
+        arterialPressureOffset.override = OVERRIDE_KEY;
+    }
+
+    return result;
+}
+
+/*********************************************************************//**
+ * @brief
+ * The testResetArterialPressureOffsetOverride function resets the override of the
+ * arterial pressure offset.
+ * @details Inputs: none
+ * @details Outputs: arterialPressureOffset
+ * @return TRUE if reset successful, FALSE if not
+ *************************************************************************/
+BOOL testResetArterialPressureOffsetOverride( void )
+{
+    BOOL result = FALSE;
+
+    if ( TRUE == isTestingActivated() )
+    {
+        result = TRUE;
+        arterialPressureOffset.override = OVERRIDE_RESET;
+        arterialPressureOffset.ovData = arterialPressureOffset.ovInitData;
+    }
+
+    return result;
+}
 
 /**@}*/