Index: firmware/App/Services/DDInterface.c
===================================================================
diff -u -ree84e20f729b0aace2b1728c16de9a89e06eee38 -r25aeff9e9994d2e7aab3b4e6171c56fdac6a01fe
--- firmware/App/Services/DDInterface.c	(.../DDInterface.c)	(revision ee84e20f729b0aace2b1728c16de9a89e06eee38)
+++ firmware/App/Services/DDInterface.c	(.../DDInterface.c)	(revision 25aeff9e9994d2e7aab3b4e6171c56fdac6a01fe)
@@ -44,6 +44,7 @@
 static BOOL ddStarted;                                                      ///< Flag indicates whether we have commanded the DD to start or stop.
 static BOOL isDialysateGoodtoDeliver;                                       ///< Flag indicating whether dialysate is good to deliver.
 static U32 currentGenDState;                                                ///< Current state of DD GenD mode.
+static U32 isBalChamberSwitchingActive;                                     ///< Flag indicating whether bc is switching.
 
 static BOOL ddOpModeDataFreshFlag;                                          ///< Flag to signal the handleDDOpMode() to process fresh dd op mode data.
 static BOOL ddDialysatePressureFreshFlag;                                   ///< Flag to signal
@@ -288,6 +289,38 @@
 
 /*********************************************************************//**
  * @brief
+ * The handleBalancingChamberData function sets the latest DD balancing
+ * chamber switching status reported by the DD.
+ * @details \b Alarm: ALARM_ID_TD_SOFTWARE_FAULT if message is invalid.
+ * @details \b Inputs: none
+ * @details \b Outputs: isBalChamberSwitchingActive
+ * @param message Pointer to the DD balancing chamber data broadcast message
+ * @return TRUE if message handled successfully, FALSE if not
+ *************************************************************************/
+BOOL handleBalancingChamberData( MESSAGE_T *message )
+{
+    BOOL result = FALSE;
+    BAL_CHAMBER_DATA_T payload;
+
+    if ( message->hdr.payloadLen == sizeof( BAL_CHAMBER_DATA_T )  )
+    {
+        // parse message payload
+        memcpy( &payload, &message->payload[ 0 ], sizeof( BAL_CHAMBER_DATA_T ) );
+
+        isBalChamberSwitchingActive = payload.isBalChamberSwitchingActive;
+        result = TRUE;
+    }
+    else
+    {
+#ifndef TEST_UI_ONLY
+        SET_ALARM_WITH_2_U32_DATA( ALARM_ID_TD_SOFTWARE_FAULT, SW_FAULT_ID_INVALID_DD_BAL_CHAMBER_DATA, (U32)message->hdr.payloadLen );
+#endif
+    }
+    return result;
+}
+
+/*********************************************************************//**
+ * @brief
  * The getDialysatePressure function gets the latest reported dialysate
  * pressure.
  * @details \b Inputs: dialysatePressure
@@ -327,6 +360,19 @@
 
 /*********************************************************************//**
  * @brief
+ * The getBalChamberSwitchingStatus function returns whether the DD
+ * balancing chamber is currently switching.
+ * @details \b Inputs: isBalChamberSwitchingActive
+ * @details \b Outputs: none
+ * @return TRUE if balancing chamber switching is active, FALSE if not
+ *************************************************************************/
+BOOL getBalChamberSwitchingStatus( void )
+{
+    return isBalChamberSwitchingActive;
+}
+
+/*********************************************************************//**
+ * @brief
  * The setDialysatePressure function sets the latest dialysate pressure
  * reported by the DD sub-system.
  * @details \b Alarm: ALARM_ID_TD_SOFTWARE_FAULT if message invalid.