CSCDCCTrailer.h

Go to the documentation of this file.

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