Implemented connection save with speeds and can fd at least for bus 0.

connections/canconnection.cpp

@@ -41,8 +41,13 @@ CANConnection::CANConnection(QString pPort,
 
     if (pBusSpeed > 0) mBusData[0].mBus.setSpeed(pBusSpeed);
     mBusData[0].mBus.setCanFD(pCanFd);
-    if (pDataRate > 0) mBusData[0].mBus.setDataRate(pDataRate);
-
+    if (pDataRate > 0) {
+      mBusData[0].mBus.setDataRate(pDataRate);
+      if (pCanFd) {
+	mBusData[0].mBus.setCanFD(pCanFd);
+      }
+    }
+ 
     /* if needed, create a thread and move ourself into it */
     if(pUseThread) {
         mThread_p = new QThread();
@@ -210,6 +215,10 @@ int CANConnection::getNumBuses() const{
     return mNumBuses;
 }
 
+int CANConnection::getSerialSpeed() const{
+  return mSerialSpeed;
+}
+
 
 bool CANConnection::isConfigured(int pBusId) {
     if( pBusId < 0 || pBusId >= getNumBuses())