Clean up data types.

bcvalue.h

@@ -53,6 +53,7 @@
     -
 */
 
+using bcdata_t = uint32_t;
 
 class BCAbstractTransmitter
 {
@@ -60,7 +61,7 @@ class BCAbstractTransmitter
 public:
 
   //
-  virtual uint32_t readValue( BCDevice::ID deviceID_, BC::ID targetID_ ) const = 0;
+  virtual bcdata_t readValue( BCDevice::ID deviceID_, BC::ID targetID_ ) const { return 0;};
   ///virtual uint32_t readByte( BCDevice::ID deviceID_, BC::ID targetID_ ) const = 0;
 };
 
@@ -109,6 +110,7 @@ public:
 
 };
 
+// really needed?
 using BCValueTypeCRef = std::optional<std::reference_wrapper<const BCValueType>>;
 
 
@@ -117,7 +119,7 @@ class BCValue
 
 public:
 
-  BCValue();
+  //BCValue();
   BCValue( const BCValueType& valueType_, BCDevice::ID deviceID_, BC::ID targetID_ );
   
   void readRawValue( const BCAbstractTransmitter& transmitter ) const;
@@ -140,7 +142,7 @@ public:
 
 
 };
-Q_DECLARE_METATYPE(BCValue)
+Q_DECLARE_METATYPE(BCValue*)
 
 
 struct BCValueParams