Index: firmware/App/Services/Messaging.c
===================================================================
diff -u -r340b6bedc5aac2ad47364ade48a842f00b12b8fe -rf8bdb3ff260a42f46e178d08979758789db7c307
--- firmware/App/Services/Messaging.c	(.../Messaging.c)	(revision 340b6bedc5aac2ad47364ade48a842f00b12b8fe)
+++ firmware/App/Services/Messaging.c	(.../Messaging.c)	(revision f8bdb3ff260a42f46e178d08979758789db7c307)
@@ -4,9 +4,11 @@
 #include "BoostPump.h"
 #include "Compatible.h"
 #include "Conductivity.h"
+#include "DDInterface.h"
 #include "Flow.h"
 #include "Level.h"
 #include "Messaging.h"
+#include "ModeGenPermeate.h"
 #include "OperationModes.h"
 #include "PAL.h"
 #include "Pressure.h"
@@ -60,31 +62,32 @@
     MSG_ID_RO_SOFTWARE_RESET_REQUEST,
     MSG_ID_RO_SEND_TEST_CONFIGURATION,
     MSG_ID_RO_VALVE_PUBLISH_INTERVAL_OVERRIDE_REQUEST,
-    MSG_ID_RO_VALVE_CMD_STATE_OVERRIDE_REQUEST,
+    MSG_ID_RO_VALVE_CMD_STATE_OVERRIDE_REQUEST,                             //5
     MSG_ID_RO_VALVE_SENSED_STATE_OVERRIDE_REQUEST,
     MSG_ID_RO_BOOST_PUMP_SET_PWM_REQUEST,
     MSG_ID_RO_BOOST_PUMP_READ_PWM_OVERRIDE_REQUEST,
     MSG_ID_RO_BOOST_PUMP_SPEED_OVERRIDE_REQUEST,
-    MSG_ID_RO_BOOST_PUMPS_PUBLISH_INTERVAL_OVERRIDE_REQUEST,
+    MSG_ID_RO_BOOST_PUMPS_PUBLISH_INTERVAL_OVERRIDE_REQUEST,                //10
     MSG_ID_RO_PRESSURE_OVERRIDE_REQUEST,
     MSG_ID_RO_PRESSURE_TEMP_OVERRIDE_REQUEST,
     MSG_ID_RO_PRESSURE_READ_COUNT_OVERRIDE_REQUEST,
     MSG_ID_RO_PRESSURE_ERROR_COUNT_OVERRIDE_REQUEST,
-    MSG_ID_RO_PRESSURE_PUBLISH_INTERVAL_OVERRIDE_REQUEST,
+    MSG_ID_RO_PRESSURE_PUBLISH_INTERVAL_OVERRIDE_REQUEST,                   //15
     MSG_ID_RO_DEBUG_EVENT,
     MSG_ID_RO_LEVEL_PUBLISH_INTERVAL_OVERRIDE_REQUEST,
     MSG_ID_RO_LEVEL_OVERRIDE_REQUEST,
     MSG_ID_RO_FLOWS_PUBLISH_INTERVAL_OVERRIDE_REQUEST,
-    MSG_ID_RO_FLOW_RATE_OVERRIDE_REQUEST,
+    MSG_ID_RO_FLOW_RATE_OVERRIDE_REQUEST,                                   //20
     MSG_ID_RO_FLOW_TEMP_OVERRIDE_REQUEST,
     MSG_ID_RO_FILTERED_FLOW_RATE_OVERRIDE_REQUEST,
     MSG_ID_RO_FILTERED_FLOW_TEMP_OVERRIDE_REQUEST,
     MSG_ID_RO_CONDUCTIVITY_PUBLISH_INTERVAL_OVERRIDE_REQUEST,
-    MSG_ID_RO_CONDUCTIVITY_OVERRIDE_REQUEST,
+    MSG_ID_RO_CONDUCTIVITY_OVERRIDE_REQUEST,                                //25
     MSG_ID_RO_CONDUCTIVITY_TEMP_OVERRIDE_REQUEST,
     MSG_ID_RO_CONDUCTIVITY_READ_COUNT_OVERRIDE_REQUEST,
     MSG_ID_RO_CONDUCTIVITY_ERROR_COUNT_OVERRIDE_REQUEST,
-    MSG_ID_RO_TEMPERATURE_OVERRIDE_REQUEST
+    MSG_ID_RO_TEMPERATURE_OVERRIDE_REQUEST,
+    MSG_ID_DD_RO_START_STOP_CMD_REQUEST                                     //30
 };
 
 /// Message handling function table
@@ -93,31 +96,32 @@
     &handleROSoftwareResetRequest,
     &handleROTestConfiguration,
     &testValvesStatesPublishIntervalOverride,
-    &testValveStateOverride,
+    &testValveStateOverride,                                                //5
     &testValveSensedStateOverride,
     &testSetBoostPumpPWM,
     &testBoostPumpPWMOverride,
     &testBoostPumpRPMOverride,
-    &testROPumpDataPublishIntervalOverride,
+    &testROPumpDataPublishIntervalOverride,                                 //10
     &testPressureSensorReadingsOverride,
     &testPressureSensorTemperatureReadingsOverride,
     &testPressureSensorReadCounterOverride,
     &testPressureSensorErrorCounterOverride,
-    &testPressureSensorDataPublishIntervalOverride,
+    &testPressureSensorDataPublishIntervalOverride,                         //15
     &handleUnhandledMsg,
     &testLevelsDataPublishIntervalOverride,
     &testLevelStateOverride,
     &testFlowSensorDataPublishIntervalOverride,
-    &testFlowSensorReadingsOverride,
+    &testFlowSensorReadingsOverride,                                        //20
     &testFlowSensorTemperatureReadingsOverride,
     &testFlowSensorFilteredReadingsOverride,
     &testFlowSensorFilteredTemperatureReadingsOverride,
     &testConductivitySensorDataPublishIntervalOverride,
-    &testConductivitySensorReadingsOverride,
+    &testConductivitySensorReadingsOverride,                                //25
     &testConductivitySensorTemperatureReadingsOverride,
     &testConductivitySensorReadCounterOverride,
     &testConductivitySensorErrorCounterOverride,
-    &testMeasuredTemperatureOverride
+    &testMeasuredTemperatureOverride,
+    &handleGeneratePermeateRequestMsg                                       //30
 };
 
 #define NUM_OF_FUNCTION_HANDLERS (sizeof(MSG_FUNCTION_HANDLERS) / sizeof(MsgFuncPtr))
@@ -131,9 +135,9 @@
 
 // ********** private function prototypes **********
 
-static BOOL sendAckResponseMsg( MSG_ID_T msgID, COMM_BUFFER_T buffer, BOOL ack );
 static MsgFuncPtr getMsgHandler( U16 msgID );
 static BOOL sendTestAckResponseMsg( MSG_ID_T msgID, BOOL ack );
+static BOOL sendAckResponseMsg( MSG_ID_T msgID, COMM_BUFFER_T buffer, BOOL ack );
 
 /*********************************************************************//**
  * @brief
@@ -259,7 +263,7 @@
  * @param ack TRUE if test message was handled successfully, FALSE if not
  * @return TRUE if response message successfully queued for transmit, FALSE if not
  *************************************************************************/
-static BOOL sendAckResponseMsg( MSG_ID_T msgID, COMM_BUFFER_T buffer, BOOL ack )
+BOOL sendAckResponseMsg( MSG_ID_T msgID, COMM_BUFFER_T buffer, BOOL ack )
 {
     BOOL result;
     MESSAGE_T msg;