Add functions to NullDisplay and TFTSerial

NullDisplay.cpp

@@ -68,6 +68,10 @@ void CNullDisplay::clearFusionInt()
 {
 }
 
+void CNullDisplay::writeCWInt()
+{
+}
+
 void CNullDisplay::close()
 {
 }

NullDisplay.h

@@ -47,6 +47,8 @@ protected:
 	virtual void writeFusionInt(const char* source, const char* dest, const char* type, const char* origin);
 	virtual void clearFusionInt();
 
+	virtual void writeCWInt();
+
 private:
 };
 

TFTSerial.cpp

@@ -311,6 +311,10 @@ void CTFTSerial::clearFusionInt()
 	displayText("              ");
 }
 
+void CTFTSerial::writeCWInt()
+{
+}
+
 void CTFTSerial::close()
 {
 	m_serial.close();

TFTSerial.h

@@ -49,6 +49,8 @@ protected:
 	virtual void writeFusionInt(const char* source, const char* dest, const char* type, const char* origin);
 	virtual void clearFusionInt();
 
+	virtual void writeCWInt();
+
 private:
    std::string       m_callsign;
    unsigned int      m_dmrid;