Index: sources/canbus/MessageDispatcher.cpp
===================================================================
diff -u -r260229a756a3ee29c681132bdc4d32204c215ceb -r7936e751fe1cd3517d0d548b53fef41f41b4db4a
--- sources/canbus/MessageDispatcher.cpp	(.../MessageDispatcher.cpp)	(revision 260229a756a3ee29c681132bdc4d32204c215ceb)
+++ sources/canbus/MessageDispatcher.cpp	(.../MessageDispatcher.cpp)	(revision 7936e751fe1cd3517d0d548b53fef41f41b4db4a)
@@ -282,8 +282,10 @@
  * \param   vActionId - The ActionID of the message
  * \param   vData     - The data of the Message
  */
+/*
 void MessageDispatcher::actionTransmit(const QVariantList &vData, Sequence vSequence, Can_Id vCanId)
 {
+    Q_UNUSED(vCanId)
     txCount();
     if (vSequence == 0) { // initialize
         // it's obvious that this assignment does not effect outside of the function.
@@ -297,29 +299,27 @@
     Can_Id canid = Can::Can_Id::eChlid_UI_HD; // TODO figure out //vCanId;
     if (! _interpreter.interpretMessage(vData, mData, canid)) {
         LOG_DEBUG(QString("Incorrect Message, cannot be interpreted, %1").arg(Format::toHexString(vActionId))); // TODO : LogInfo Improvement
-        qDebug() << "Cannot Interpret";
         return;
     }
-    qDebug() << "Got to action" << mData << vCanId << vData[0];
+
     // TODO : Create a buildFrames method
     FrameList frameList;
     Sequence mSequence = vSequence;
-    bool mNeedsAcknow = false; //needsAcknow(vCanId);
+    bool mNeedsAcknow = true; //needsAcknow(vCanId);
     if (mNeedsAcknow) {
         mSequence = -mSequence;
         if ( ! gDisableAcknowLog ) {
-            LOG_APPED_UI(tr("Ack Req, Sq:%1, ID:%2").arg(mSequence).arg(Format::toHexString(vActionId)));
+                LOG_APPED_UI(tr("Ack Req, Sq:%1, ID:%2").arg(mSequence).arg(Format::toHexString(vActionId)));
         }
 #ifdef DEBUG_ACKBACK_HD_TO_UI
-                qDebug() << tr(" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ UI AckReq : %1 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ").arg(mSequence);
+        qDebug() << tr(" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ UI AckReq : %1 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ").arg(mSequence);
 #endif
     }
 
     // disabled coco begin validated: Has been tested manually but in this function this cannot be false because the message interpreter is doing the same  validation.
     // still checking here in case the logic has changed therefore buildFrame should still validate the message for developer safety.
     if ( ! _builder.buildFrames(0, mData, frameList, mSequence) ) {
         LOG_DEBUG(QString("Incorrect Message cannot be built"));  // TODO : LogInfo Improvement
-        qDebug() << "Cannot build message";
         return;
     }
     // disabled coco end
@@ -334,6 +334,7 @@
     framesTransmit(canid, frameList);
 }
 
+*/
 /*!
  * \brief   MessageDispatcher::framesTransmit
  * \details iterates through all the frames and emits to send the frames
@@ -377,9 +378,24 @@
  */
 bool MessageDispatcher::checkAcknowReceived(const Message &vMessage, const QString &vSrcText)
 {
-    Q_UNUSED(vMessage);
-    Q_UNUSED(vSrcText);
-    return true;
+    enum GuiActionsType_Enum /* : quint16 QML does not support enum types */ {
+        ID_Acknow             = 0xFFFF,
+    };
+
+    int           mActionId = vMessage.actionId;
+    Sequence      mSequence = vMessage.sequence;
+    bool ok = false;
+    if ( mActionId == ID_Acknow ) {
+        ok = true;
+        if ( ! gDisableAcknowLog ) {
+            LOG_APPED(tr("    ,%1,Ack Bak, Sq:%2").arg(vSrcText).arg(mSequence));
+        }
+#ifdef DEBUG_ACKBACK_HD_TO_UI
+        qDebug() << tr(" ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ HD AckBak : %1 %2 ~~~~~~~~~~~~~~~~~~~~~~~~~~~ ").arg(mSequence).arg(vMessage.actionId);
+#endif
+        emit didAcknowReceive(mSequence);
+    }
+    return ok;
 }
 
 /*!
@@ -391,13 +407,15 @@
  */
 bool MessageDispatcher::checkAcknowTransmit(const Message &vMessage, const QString &vSrcText)
 {
+    enum GuiActionsType_Enum /* : quint16 QML does not support enum types */ {
+        ID_Acknow             = 0xFFFF,
+    };
+
     bool ok = false;
-    int           mActionId = 0;
+    int           mActionId = vMessage.actionId;
     Sequence      mSequence = vMessage.sequence;
-
     // UI shall acknowledge the messages is intended for UI.
     if ( ! needsAcknow(vMessage.can_id)) return ok; // false
-
     if (mSequence < 0) {
         ok = true;
         if ( ! gDisableAcknowLog ) {
@@ -409,7 +427,13 @@
         // ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ UI AckBak is immediately handled at the same place.
         QString dstText;
         Can_Id dstID = MessageInterpreter::identifyDestination(vMessage.can_id, &dstText);
-        actionTransmit({}, -mSequence, dstID);
+        Q_UNUSED(dstID)
+
+        QVariantList msg;
+        msg.append(static_cast<quint16>(ID_Acknow));
+        msg.append(Can_Id::eChlid_HD_UI);
+
+        actionTransmit(msg, -mSequence);
         if ( ! gDisableAcknowLog ) {
             LOG_APPED_UI(tr("Ack Bak, Sq:%1, Dst:%2").arg(-mSequence).arg(dstText));
         }
@@ -434,6 +458,7 @@
     QVariantList  mData;
     QString srcText;
     MessageInterpreter::identifySource(vMessage.can_id, &srcText);
+
     if ( ! checkAcknowReceived(vMessage, srcText) ) {   // check if the message was an acknowledge.
         checkAcknowTransmit(vMessage, srcText);         // then  if needs acknow send it immediately.
     }