Index: sources/canbus/caninterface.cpp
===================================================================
diff -u -r94f7349bd073a732dba5295250fc0e26f740743c -rbb8f39a014644c70b832dd2a784f62fa9f6b6106
--- sources/canbus/caninterface.cpp	(.../caninterface.cpp)	(revision 94f7349bd073a732dba5295250fc0e26f740743c)
+++ sources/canbus/caninterface.cpp	(.../caninterface.cpp)	(revision bb8f39a014644c70b832dd2a784f62fa9f6b6106)
@@ -25,8 +25,6 @@
 // stl
 #include <stdint.h>
 
-#define FrameCount_MAX UINT64_MAX
-
 // namespace
 using namespace Can;
 
@@ -269,32 +267,37 @@
  * \details count received frames up the size of the FrameCount type size
  * \return  frame count
  */
-CanInterface::FrameCount CanInterface::rxCount()
+FrameCount CanInterface::rxCount()
 {
-    if ( _rxFrameCount <= FrameCount_MAX ) {
-        ++_rxFrameCount;
-    } else {
-        _rxFrameCount = 1;
-    }
+    Types::safeIncrement(_rxFrameCount);
     return _rxFrameCount;
+
 }
 
 /*!
  * \brief   CanInterface::txCount
  * \details count transmitted frames up the size of the FrameCount type size
  * \return  frame count
  */
-CanInterface::FrameCount CanInterface::txCount()
+FrameCount CanInterface::txCount()
 {
-    if ( _txFrameCount <= FrameCount_MAX ) {
-        ++_txFrameCount;
-    } else {
-        _txFrameCount = 1;
-    }
+    Types::safeIncrement(_txFrameCount);
     return _txFrameCount;
 }
 
 /*!
+ * \brief   CanInterface::erCount
+ * \details count errors happened
+ * \return  error count
+ */
+FrameCount CanInterface::erCount()
+{
+    Types::safeIncrement(_erFrameCount);
+    return _erFrameCount;
+
+}
+
+/*!
  * \brief   frameFlags
  * \details CANBUS message frame type as flags
  * \param   vFrame - CANBUS message frame
@@ -321,13 +324,15 @@
  */
 void CanInterface::onFrameError(QCanBusDevice::CanBusError vError)
 {
+    erCount();
     switch (vError) {
     case QCanBusDevice::ReadError:
     case QCanBusDevice::WriteError:
     case QCanBusDevice::ConnectionError:
     case QCanBusDevice::ConfigurationError:
     case QCanBusDevice::UnknownError:
         _canStatus = _canDevice->errorString();
+        LOG_ERROR(QString("%1 - %2").arg(_erFrameCount).arg(_canStatus));
         break;
     default:
         break;
@@ -343,10 +348,11 @@
  * \param   vFramesCount - The framesCount argument is set to the number of frames
  *          that were written in this payload.
  */
-void CanInterface::onFrameWritten(qint64 /*vFramesCount*/)
+void CanInterface::onFrameWritten(qint64 vFramesCount)
 {
-    //_txFrameCount = vFramesCount;
-    //qDebug() << "onFrameWritten::FramesCount : " << vFramesCount;
+    static FrameCount mFrameCount = 0;
+    Types::safeIncrement(mFrameCount, vFramesCount);
+    emit didFrameWritten(vFramesCount);
 }
 
 /*!