Index: sources/canbus/frameinterface.h
===================================================================
diff -u -r805119c460b4a266d6401c8705f4427e7fbe270f -r4836b003eb45d7f8cb98ea4c7999d068f0beb0d2
--- sources/canbus/frameinterface.h	(.../frameinterface.h)	(revision 805119c460b4a266d6401c8705f4427e7fbe270f)
+++ sources/canbus/frameinterface.h	(.../frameinterface.h)	(revision 4836b003eb45d7f8cb98ea4c7999d068f0beb0d2)
@@ -16,6 +16,7 @@
 // Qt
 #include <QObject>
 #include <QCanBus>
+#include <QQueue>
 
 // Project
 #include "main.h"
@@ -60,6 +61,23 @@
     QThread *_thread = nullptr;
     bool     _init   = false;
 
+    struct Frame {
+        Can_Id     can_Id;
+        QByteArray data  ;
+
+        Frame(Can_Id vCan_Id, const QByteArray &vData) {
+            can_Id = vCan_Id;
+            data   = vData  ;
+        }
+    };
+    QList<Frame> _frameList;
+    bool _waitSend = false;
+    QMutex _mutexTransmit1;
+    QMutex _mutexTransmit2;
+    QMutex _mutexTransmit3;
+    qint64 _fc = 0;
+
+
 // Singleton
 SINGLETON(FrameInterface)
 
@@ -82,6 +100,7 @@
 private slots: // Should be private for thread safety and is connected internally.
     void  onFrameTransmit(Can_Id vCan_Id, const QByteArray   &vData   ); // GUI => CAN
     void  onFrameReceive (                const QCanBusFrame &vFrame  ); // GUI <= CAN
+    void  onFrameWritten (qint64 vCount                               ); // GUI <= CAN
 
 signals:
     /*!
@@ -108,5 +127,7 @@
      * \param vFrame - The frame which has been created to be transmitted.
      */
     void didFrameTransmit(                const QCanBusFrame &vFrame  ); // GUI => CAN
+protected:
+    void timerEvent(QTimerEvent *);
 };
 }