Index: firmware/App/Services/Messaging.c
===================================================================
diff -u -r5476a01d71ea9c0d0395abc2f4be2926a6209dd4 -r74e936a69fe77b622a8121610c83d50a91045713
--- firmware/App/Services/Messaging.c	(.../Messaging.c)	(revision 5476a01d71ea9c0d0395abc2f4be2926a6209dd4)
+++ firmware/App/Services/Messaging.c	(.../Messaging.c)	(revision 74e936a69fe77b622a8121610c83d50a91045713)
@@ -7,8 +7,8 @@
 *
 * @file    Messaging.c
 *
-* @author  (last)      Vijay Pamula
-* @date    (last)      14-Jul-2026
+* @author  (last)      suresh
+* @date    (last)      05-Aug-2026
 *
 * @author  (original)  Sean Nash
 * @date    (original)  01-Aug-2024
@@ -33,6 +33,8 @@
 #include "FpgaTD.h"
 #include "LevelSensors.h"
 #include "Messaging.h"
+#include "ModeInitPOST.h"
+#include "ModePreTreat.h"
 #include "ModeStandby.h"
 #include "ModeTreatment.h"
 #include "OperationModes.h"
@@ -113,6 +115,7 @@
     { MSG_ID_FW_VERSIONS_REQUEST,                                       &handleVersionRequestMessage },
     { MSG_ID_UI_CHECK_IN,                                               &handleUICheckIn },
     { MSG_ID_DD_OP_MODE_DATA,                                           &setDDOpMode },
+    { MSG_ID_UI_VERSION_INFO_RESPONSE,                                  &handleUIVersionResponse },
     { MSG_ID_DD_GEN_DIALYSATE_MODE_DATA,                                &setDialysateData },
     { MSG_ID_DD_PRESSURES_DATA,                                         &setDialysatePressure },
     { MSG_ID_UI_TREATMENT_PARAMS_TO_VALIDATE,                           &validateAndSetTreatmentParameters },
@@ -123,6 +126,7 @@
     { MSG_ID_UI_VITALS_ADJUSTMENT_REQUEST,                              &vitalsAdjustmentHandleChangeRequest },
     { MSG_ID_UI_BOLUS_VOLUME_CHANGE_REQUEST,                            &validateAndSetBolusVolume },
     { MSG_ID_UI_INITIATE_TREATMENT_WORKFLOW,                            &signalUserInitiateTreatment },
+    { MSG_ID_UI_START_TREATMENT_REQUEST,                                &handleStartTreatmentRequest },
     { MSG_ID_UI_UF_PAUSE_RESUME_REQUEST,                                &signalPauseResumeUF },
     { MSG_ID_TESTER_LOGIN_REQUEST,                                      &handleTesterLogInRequest },
     { MSG_ID_UI_PRESSURE_LIMIT_WIDEN_REQUEST,                           &pressureLimitHandleWidenRequest },
@@ -138,6 +142,7 @@
     { MSG_ID_UI_ADJUST_DISPOSABLES_REMOVAL_CONFIRM_REQUEST,             &handleAutoEjectRequest },
     { MSG_ID_FFU_SIGNAL_TD_UPDATE_AVAILABLE,                            &handleUpdateAvailable },
     { MSG_ID_UI_FLUID_BOLUS_REQUEST,                                    &handleFluidBolusRequest },
+    { MSG_ID_UI_GENERIC_CONFIRMATION_RESULT_RESPONSE,                   &handleUIConfirmationResponse },
     { MSG_ID_TD_SOFTWARE_RESET_REQUEST,                                 &testTDSoftwareResetRequest },
     { MSG_ID_TD_BUBBLE_OVERRIDE_REQUEST,                                &testBubbleDetectOverride },
     { MSG_ID_TD_BUBBLE_PUBLISH_INTERVAL_OVERRIDE_REQUEST,               &testBubblesDataPublishIntervalOverride },
@@ -244,7 +249,6 @@
 
 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
@@ -403,7 +407,7 @@
  * @param ack TRUE to ACK, FALSE to NAK
  * @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;
@@ -530,7 +534,31 @@
     return result;
 }
 
+/*********************************************************************//**
+ * @brief
+ * The handleUIVersionResponse function handles a response to request for
+ * UI version information.
+ * @details Inputs: none
+ * @details Outputs: none
+ * @param message a pointer to the message to handle.
+ * @return none
+ *************************************************************************/
+BOOL handleUIVersionResponse( MESSAGE_T *message )
+{
+    BOOL result = TRUE;
 
+    // Get UI version data and have it recorded
+    if ( sizeof(UI_VERSIONS_T) == message->hdr.payloadLen )
+    {
+        UI_VERSIONS_T uiVersion;
+
+        memcpy( &uiVersion, &message->payload[ 0 ], sizeof(UI_VERSIONS_T) );
+        signalUIVersion( uiVersion );
+    }
+
+    return result;
+}
+
 // ***********************************************************************
 // ***************** Message Sending Helper Functions ********************
 // ***********************************************************************
@@ -575,36 +603,54 @@
 
 /*********************************************************************//**
  * @brief
- * The sendOffButtonMsgToUI function constructs an off button msg to the UI
- * and queues the msg for transmit on the appropriate CAN channel.
- * @details \b Message \b Sent: MSG_ID_OFF_BUTTON_PRESS_REQUEST
+ * The sendUIVersionRequest function constructs a UI version request msg
+ * to the UI and queues the msg for transmit on the appropriate CAN channel.
+ * @details \b Message \b Sent: MSG_ID_TD_UI_VERSION_INFO_REQUEST
  * @details \b Inputs: none
- * @details \b Outputs: Off button msg constructed and queued.
- * @param prompt 0=prompt user to confirm, 1=cancel prompt, 2=reject user off request
+ * @details \b Outputs: none
  * @return TRUE if msg successfully queued for transmit, FALSE if not
  *************************************************************************/
-BOOL sendOffButtonMsgToUI( U08 prompt )
+BOOL sendUIVersionRequest( void )
 {
     BOOL result;
     MESSAGE_T msg;
-    UI_OFF_BUTTON_RESPONSE_PAYLOAD_T cmd;
 
-    cmd.userRequest = prompt;
-
     // Create a message record
     blankMessage( &msg );
-    msg.hdr.msgID = MSG_ID_OFF_BUTTON_PRESS_REQUEST;
-    msg.hdr.payloadLen = sizeof( UI_OFF_BUTTON_RESPONSE_PAYLOAD_T );
+    msg.hdr.msgID = MSG_ID_TD_UI_VERSION_INFO_REQUEST;
+    msg.hdr.payloadLen = 0;
 
-    memcpy( &msg.payload, &cmd, sizeof( UI_OFF_BUTTON_RESPONSE_PAYLOAD_T ) );
-
     // Serialize the message (w/ sync, CRC, and appropriate CAN padding) and add serialized message data to appropriate comm buffer
     result = serializeMessage( msg, COMM_BUFFER_OUT_CAN_TD_2_UI, ACK_REQUIRED );
 
     return result;
 }
 
+/*********************************************************************//**
+ * @brief
+ * The sendRequestForDDResendAlarms function sends out the TD request for
+ * DD re-send all active alarms.
+ * @details \b Inputs: none
+ * @details \b Outputs: DD alarms re-send request msg constructed and queued
+ * @return TRUE if msg successfully queued for transmit, FALSE if not
+ *************************************************************************/
+BOOL sendRequestForDDResendAlarms( void )
+{
+    BOOL result;
+    MESSAGE_T msg;
 
+    // Create a message record
+    blankMessage( &msg );
+    msg.hdr.msgID = MSG_ID_TD_DD_ALARMS_REQUEST;
+    msg.hdr.payloadLen = 0;
+
+    // Serialize the message (w/ sync, CRC, and appropriate CAN padding) and add serialized message data to appropriate comm buffer
+    result = serializeMessage( msg, COMM_BUFFER_OUT_CAN_TD_2_DD, ACK_REQUIRED );
+
+    return result;
+}
+
+
 /*************************************************************************
  *                       TEST SUPPORT FUNCTIONS
  *************************************************************************/
@@ -744,6 +790,45 @@
 
 /*********************************************************************//**
  * @brief
+ * The sendPOSTTestResult function sends the result of a single TD POST
+ * test to the UI.
+ * @details \b Message \b Sent: MSG_ID_TD_POST_SINGLE_TEST_RESULT
+ * @details \b Inputs: none
+ * @details \b Outputs: TD POST test result msg queued for CAN transmit.
+ * @param test ID of the TD POST test.
+ * @param passed TRUE if POST test passed, FALSE if POST test failed.
+ * @return TRUE if message successfully queued for transmit, FALSE if not
+ *************************************************************************/
+BOOL sendPOSTTestResult( TD_POST_STATE_T test, BOOL passed )
+{
+    U08 payload[ sizeof( BOOL ) + sizeof( U32 ) ];
+    U32 testID = (U32)test;
+
+    memcpy( payload, &passed, sizeof( BOOL ) );
+    memcpy( &payload[ sizeof( BOOL ) ], &testID, sizeof( U32 ) );
+
+    // Use the generic send helper for transmission.
+    return sendMessage( MSG_ID_TD_POST_SINGLE_TEST_RESULT, COMM_BUFFER_OUT_CAN_TD_BROADCAST, payload, sizeof( payload ) );
+}
+
+/*********************************************************************//**
+ * @brief
+ * The sendPOSTFinalResult function sends the overall TD POST result
+ * and queues the message for transmit on the appropriate CAN channel.
+ * @details \b Message \b Sent: MSG_ID_TD_POST_FINAL_TEST_RESULT
+ * @details \b Inputs: none
+ * @details \b Outputs: TD POST final result msg queued for CAN transmit.
+ * @param passed TRUE if all TD POST tests passed, FALSE otherwise.
+ * @return TRUE if message successfully queued for transmit, FALSE if not
+ *************************************************************************/
+BOOL sendPOSTFinalResult( BOOL passed )
+{
+    // Use the generic send helper for transmission.
+    return sendMessage( MSG_ID_TD_POST_FINAL_TEST_RESULT, COMM_BUFFER_OUT_CAN_TD_BROADCAST, (U08 *)&passed, sizeof( BOOL ) );
+}
+
+/*********************************************************************//**
+ * @brief
  * The testTDSoftwareResetRequest function handles a request to reset the
  * TD firmware processor.
  * @note If reset is successful, this function will not return.