Index: firmware/App/Services/SystemCommMessages.h
===================================================================
diff -u -r54e58f64179ea382d2e2c403c8c3b9a15a612636 -rd332a26f463cc5d209be77e562952f70775cf913
--- firmware/App/Services/SystemCommMessages.h	(.../SystemCommMessages.h)	(revision 54e58f64179ea382d2e2c403c8c3b9a15a612636)
+++ firmware/App/Services/SystemCommMessages.h	(.../SystemCommMessages.h)	(revision d332a26f463cc5d209be77e562952f70775cf913)
@@ -48,13 +48,16 @@
 
 // ********** public definitions **********
 
+#define ACK_REQUIRED                    TRUE        ///< Require an ACK.
+#define ACK_NOT_REQUIRED                FALSE       ///< Not require an ACK.
+
 // ********** public function prototypes **********
 
 // ACK MSG
 BOOL sendACKMsg( MESSAGE_T *message );
 
-// Generic broadcast function
-BOOL broadcastData( MSG_ID_T msgID, COMM_BUFFER_T buffer, U08* dataPtr, U32 length );
+// Serialize message
+U32 serializeMessage( MESSAGE_T msg, COMM_BUFFER_T buffer, BOOL ackReq );
 
 // MSG_ID_ALARM_TRIGGERED
 BOOL broadcastAlarmTriggered( U32 alarm, ALARM_DATA_T almData1, ALARM_DATA_T almData2 );