Index: firmware/App/Controllers/DGInterface.h
===================================================================
diff -u -rde22eef34c821f425e864f8dea32f61cd2141fb4 -r37733a07bec6a752717a9eadcab000685546eb83
--- firmware/App/Controllers/DGInterface.h	(.../DGInterface.h)	(revision de22eef34c821f425e864f8dea32f61cd2141fb4)
+++ firmware/App/Controllers/DGInterface.h	(.../DGInterface.h)	(revision 37733a07bec6a752717a9eadcab000685546eb83)
@@ -95,6 +95,16 @@
     BOOL isDGUsageInfoAvailable;                                             ///< Flag to indicate DG usage info is available.
 } DG_SERVICE_AND_USAGE_DATA_T;
 
+/// Tdi temperature up/down counters when the temperature varies above/below threshold value.
+typedef struct
+{
+    U32 tdiTempUpCounter;                                                   ///< tdi temperature Up counter
+    U32 tdiTempDownCounter;                                                 ///< tdi temperature down counter
+    U32 prevTdiTempUpCounter;                                               ///< previous tdi temperature Up counter
+    U32 prevTdiTempDownCounter;                                             ///< previous tdi temperature down counter
+    BOOL clearAlarmStartTime;                                               ///< to clear temp high alarm, use persistent method
+} DG_TDI_TEMP_COUNTER_T;
+
 // ********** public function prototypes **********
 
 void initDGInterface( void );
@@ -120,6 +130,7 @@
 DG_DISINFECT_UI_STATES_T getDGDisinfectsStates( void );
 DG_MIXING_RATIOS_T getDGMixingRatios( void );
 void getHDVersionDGServiceAndUsageData( DG_SERVICE_AND_USAGE_DATA_T* data );
+void resetTdiTempCounters (void);
 
 void setDGOpMode( U32 opMode, U32 subMode );
 void setDialysateTemperatureReadings( F32 tdi, F32 tro, F32 thd );