Index: sources/canbus/messagehandler.cpp
===================================================================
diff -u -r4c1551d45b40987c2d59c11e95760e9b6c55fc68 -rfee7fabf49befb065c89248c19e15efc9ca194e4
--- sources/canbus/messagehandler.cpp	(.../messagehandler.cpp)	(revision 4c1551d45b40987c2d59c11e95760e9b6c55fc68)
+++ sources/canbus/messagehandler.cpp	(.../messagehandler.cpp)	(revision fee7fabf49befb065c89248c19e15efc9ca194e4)
@@ -1,14 +1,10 @@
 /*!
  *
- * Copyright (c) 2019-2020 Diality Inc. - All Rights Reserved.
+ * Copyright (c) 2019-2019 Diality Inc. - All Rights Reserved.
  * copyright
-
  *          THIS CODE MAY NOT BE COPIED OR REPRODUCED IN ANY FORM,
-
  *          IN PART OR IN WHOLE,
-
  *          WITHOUT THE EXPLICIT PERMISSION OF THE COPYRIGHT OWNER.
-
  *
  * file    messagehandler.cpp
  * date    10/26/2019
@@ -48,9 +44,9 @@
 }
 
 /*!
- * \brief Message Handler connections definition
+ * \brief   MessageHandler connections definition
  * \details Initializes the required signal/slot connection between this class and other objects\n
- * to be able to communicate.
+ *          to be able to communicate.
  */
 void MessageHandler::initConnections()
 {
@@ -63,6 +59,16 @@
             this              ,   SLOT(  onFrameReceive(        const QCanBusFrame &)));
 }
 
+/*!
+ * \brief   MessageHandler::transmitFrame                                   \n
+ * \details Prepares a frame to be transmitted                              \n
+ *          and emit signal didFrameTransmit with the frame as its argument \n
+ * \param   vFrameId - Channel id of the CANBUS frame                       \n
+ * \param   vData    - The Data this frame is going to carry                \n
+ * \note    This frame is created by MessageBuilder                         \n
+ *          and it can be one of the frames of a message                    \n
+ *          which has been chopped into frames.                             \n
+ */
 void MessageHandler::transmitFrame(Can_Id vFrameId, const QByteArray &vData)
 {
     QCanBusFrame mFrame;
@@ -75,6 +81,16 @@
     emit didFrameTransmit(mFrame);
 }
 
+/*!
+ * \brief   MessageHandler::checkChannel                    \n
+ * \details Checks for the channel id of the received frame \n
+ *          which needs to be handled or ignored.           \n
+ * \param   vFrameId - Channel id of the frame              \n
+ * \param   vOK      - will be set to true if the channel   \n
+ *          is valid and a variable has been passed to      \n
+ * \return  The Category if the channels from the UI        \n
+ *          perspective \ref MessageHandler::ChannelGroup   \n
+ */
 MessageHandler::ChannelGroup MessageHandler::checkChannel(quint32 vFrameId, bool *vOK)
 {
     bool ok = true;
@@ -110,14 +126,26 @@
     return channelGroup;
 }
 
+/*!
+ * \brief   MessageHandler::onFrameTransmit                                             \n
+ * \details This the slot connected to the MessageDispatcher didFrameTransmit signal.   \n
+ *          When a frame needs to be send to CANBUS,                                    \n
+ *          this slot will call transmitFrame method to do the job.                     \n
+ * \param   vCan_ID - CANBUS Can Id target of the frame.                                \n
+ * \param   vData   - The data which this frame will carry.                             \n
+ */
 void MessageHandler::onFrameTransmit(Can_Id vCan_ID, const QByteArray &vData)
 {
     transmitFrame(vCan_ID, vData);
 }
 
 /*!
- * \brief MessageHandler::onRead
- * \param vFrame
+ * \brief   MessageHandler::onFrameReceive
+ * \details This the slot connected to the CanInterface didFrameReceive signal.         \n
+ *          When a frame received over the CANBUS,                                      \n
+ *          this slot will be called to check the channel if should be listened to.     \n
+ *          and will emit didFrameReceive if should be handled and ignored otherwise.   \n
+ * \param   vFrame - The frame has to be sent
  */
 void MessageHandler::onFrameReceive(const QCanBusFrame &vFrame)
 {