Index: firmware/App/Services/SystemCommMessages.h
===================================================================
diff -u -r844f98879b7425c207b58562e623ab960adbc357 -r31785f24396cebed8e10834f56fc2668783558e6
--- firmware/App/Services/SystemCommMessages.h	(.../SystemCommMessages.h)	(revision 844f98879b7425c207b58562e623ab960adbc357)
+++ firmware/App/Services/SystemCommMessages.h	(.../SystemCommMessages.h)	(revision 31785f24396cebed8e10834f56fc2668783558e6)
@@ -1,17 +1,17 @@
 /**************************************************************************
 *
-* Copyright (c) 2019-2020 Diality Inc. - All Rights Reserved.
+* Copyright (c) 2019-2021 Diality Inc. - All Rights Reserved.
 *
 * THIS CODE MAY NOT BE COPIED OR REPRODUCED IN ANY FORM, IN PART OR IN
 * WHOLE, WITHOUT THE EXPLICIT PERMISSION OF THE COPYRIGHT OWNER.
 *
-* @file SystemCommMessages.h
+* @file    SystemCommMessages.h
 *
-* @author (last) Sean Nash
-* @date (last) 14-Oct-2020
+* @author  (last)      Dara Navaei
+* @date    (last)      06-Nov-2021
 *
-* @author (original) Dara Navaei
-* @date (original) 05-Nov-2019
+* @author  (original)  Dara Navaei
+* @date    (original)  05-Nov-2019
 *
 ***************************************************************************/
 
@@ -23,6 +23,7 @@
 #include "BloodLeak.h"
 #include "BloodPrime.h"
 #include "Bubble.h"
+#include "CommBuffers.h"
 #include "DGInterface.h"
 #include "DialInFlow.h"
 #include "DialOutFlow.h"
@@ -55,12 +56,18 @@
  *  @{
  */
 
-// ********** public definitions **********
+// ********** public definitions **********
+
+#define ACK_REQUIRED                    TRUE                ///< Macro for functions that want to know if an outgoing message requires acknowledgement from receiver.
+#define ACK_NOT_REQUIRED                FALSE               ///< Macro for functions that want to know if an outgoing message requires acknowledgement from receiver.
 
 // ********** public function prototypes **********
 
 // ACK MSG
-BOOL sendACKMsg( MESSAGE_T *message );
+BOOL sendACKMsg( MESSAGE_T *message );
+
+// Serialize message
+U32 serializeMessage( MESSAGE_T msg, COMM_BUFFER_T buffer, BOOL ackReq );
 
 // MSG_ID_DG_CHECK_IN
 void handleDGCheckIn( MESSAGE_T *message );
@@ -325,7 +332,7 @@
 BOOL sendTreatmentLogAlarmEventData( ALARM_ID_T alarmID, ALARM_DATA_T almData1, ALARM_DATA_T almData2 );
 
 // MSG_ID_HD_TREATMENT_LOG_EVENT
-BOOL sendTreatmentLogEventData( EVENT_ID_T event, F32 oldValue, F32 newValue );
+BOOL sendTreatmentLogEventData( HD_EVENT_ID_T event, F32 oldValue, F32 newValue );
 
 // *********** public DG command functions **********
 
@@ -859,6 +866,9 @@
 // MSG_ID_HD_FANS_RPM_OVERRIDE
 void handleFansRPMOverride( MESSAGE_T *message );
 
+// MSG_ID_HD_STOP_RTC_CLOCK
+void handleStopHDRTCClock( MESSAGE_T *message );
+
 /**@}*/
 
 #endif