CSCDCCTrailer.h

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// Authors Rick W and Alex T 9/24/94
//
#ifndef CSCDCCTrailer_h
#define CSCDCCTrailer_h

#include <iostream>
#include <cstdint>
#include <cstring> // bzero
#include "DataFormats/CSCDigi/interface/CSCDCCStatusDigi.h"


struct CSCDCCTrailer {
  CSCDCCTrailer() 
  {
    bzero(this, sizeInWords()*2);
    dcc_trail1 = 0xEF;
    EOE_1 = 0XA;
    XXXX_1 = 0X0; //@@ Actually a reserved bit. We should not test on it.
  }
  
  CSCDCCTrailer(const CSCDCCStatusDigi & digi)
  {
    memcpy(this, digi.trailer(), sizeInWords()*2);
  }

  void setFromBuffer(uint16_t const* buf) {
    memcpy(this, buf, sizeInWords()*2);
  }

  unsigned fifo_status      : 8;
  unsigned ddu_data_status2 : 24;
  unsigned ddu_data_status1 : 16;
  unsigned readout_time     : 8;
  unsigned dcc_trail1       : 8;

  unsigned dollardollar : 1;
  unsigned Tx           : 3;
  unsigned TTS          : 4;
  unsigned Evt_stat     : 4;
  unsigned XXXX_2       : 4;
  unsigned CRC          : 16;
  unsigned Evt_lgth     : 24;
  unsigned XXXX_1       : 4;
  unsigned EOE_1        : 4;

  static unsigned sizeInWords() {return 8;}
  //@@ The XXXX_1 is a reserved bit in CMS format - we really should not be testing it
  bool check() const {return (dcc_trail1 == 0xEF) && (EOE_1 == 0XA) && (XXXX_1 == 0X0);}
  unsigned short * data() {return (unsigned short *) this;}

};
#endif