#ifndef _DLMSREADER_h
#define _DLMSREADER_h

#include "Crc16.h"

#if defined(ARDUINO) && ARDUINO >= 100
  #include "Arduino.h"
#else
  #include "WProgram.h"
#endif

#define DLMS_READER_BUFFER_SIZE 256
#define DLMS_READER_MAX_ADDRESS_SIZE 5

class DlmsReader
{
  public:
    DlmsReader();
    bool Read(byte data);
    int GetRawData(byte *buffer, int start, int length);
    
  protected:
    Crc16Class Crc16;
    
  private:
    byte buffer[DLMS_READER_BUFFER_SIZE];
    int position;
    int dataLength;
    byte frameFormatType;
    byte destinationAddress[DLMS_READER_MAX_ADDRESS_SIZE];
    byte destinationAddressLength;
    byte sourceAddress[DLMS_READER_MAX_ADDRESS_SIZE];
    byte sourceAddressLength;

    void Clear();
    int GetAddress(int addressPosition, byte* buffer, int start, int length);
    unsigned short GetChecksum(int checksumPosition);
    bool IsValidFrameFormat(byte frameFormatType);
    void WriteBuffer();
};

#endif