Index: firmware/App/Modes/TreatmentStop.c
===================================================================
diff -u -r6b870cd0699bb3ee22b93981d51373a6c2d56162 -r3135defd5053f5724eac7375ffd56ad1d129d5ae
--- firmware/App/Modes/TreatmentStop.c	(.../TreatmentStop.c)	(revision 6b870cd0699bb3ee22b93981d51373a6c2d56162)
+++ firmware/App/Modes/TreatmentStop.c	(.../TreatmentStop.c)	(revision 3135defd5053f5724eac7375ffd56ad1d129d5ae)
@@ -22,6 +22,7 @@
 #include "DialOutFlow.h"
 #include "ModeTreatment.h"
 #include "OperationModes.h"
+#include "SystemCommMessages.h"
 #include "TaskGeneral.h"
 #include "TreatmentStop.h"
 #include "Valves.h"
@@ -35,17 +36,22 @@
 
 /// Maximum time in this mode before blood sitting warning given (in general task intervals).
 static const U32 MAX_TIME_BLOOD_SITTING = ( ( 5 * SEC_PER_MIN * MS_PER_SECOND ) / TASK_GENERAL_INTERVAL );
+/// Treatment stop status broadcast interval.
+static const U32 TREATMENT_STOP_DATA_PUBLISH_INTERVAL = ( MS_PER_SECOND / TASK_GENERAL_INTERVAL );
 
 // ********** private data **********
 
 static TREATMENT_STOP_STATE_T currentTxStopState;                                  ///< Current treatment stop state.
 static U32 bloodSittingTimerCtr;                                                   ///< Timer counter tracks time in this mode while blood is sitting.
+static U32 stopPublishTimerCtr;                                                    ///< Timer counter (in GP task intervals) counts time to next status broadcast.
 
 // ********** private function prototypes **********
 
 static TREATMENT_STOP_STATE_T handleTreatmentStopRecircState( void );
 static TREATMENT_STOP_STATE_T handleTreatmentStopNoRecircState( void );
 
+static void publishTreatmentStopData( void );
+
 /*********************************************************************//**
  * @brief
  * The initTreatmentStop function initializes the Treatment Stop sub-mode
@@ -58,6 +64,7 @@
 {
     currentTxStopState = TREATMENT_STOP_RECIRC_STATE;
     bloodSittingTimerCtr = 0;
+    stopPublishTimerCtr = 0;
 }
 
 /*********************************************************************//**
@@ -153,6 +160,9 @@
             SET_ALARM_WITH_2_U32_DATA( ALARM_ID_HD_SOFTWARE_FAULT, SW_FAULT_ID_TREATMENT_STOP_INVALID_STATE, currentTxStopState );
             break;
     }
+
+    // Broadcast treatment stop status
+    publishTreatmentStopData();
 }
 
 /*********************************************************************//**
@@ -208,4 +218,24 @@
     return currentTxStopState;
 }
 
+/*********************************************************************//**
+ * @brief
+ * The publishTreatmentStopData function publishes treatment stop progress to UI
+ * at 1 Hz interval.
+ * @details Inputs: stopPublishTimerCtr, bloodSittingTimerCtr
+ * @details Outputs: treatment stop data published
+ * @return none
+ *************************************************************************/
+static void publishTreatmentStopData( void )
+{
+    if ( ++stopPublishTimerCtr >= TREATMENT_STOP_DATA_PUBLISH_INTERVAL )
+    {
+        U32 timeout = MAX_TIME_BLOOD_SITTING  / TASK_GENERAL_INTERVAL;
+        U32 countdown = ( bloodSittingTimerCtr >= MAX_TIME_BLOOD_SITTING ? 0 : ( MAX_TIME_BLOOD_SITTING - bloodSittingTimerCtr ) / TASK_GENERAL_INTERVAL );
+
+        stopPublishTimerCtr = 0;
+        broadcastTreatmentStopData( timeout, countdown );
+    }
+}
+
 /**@}*/