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#ifndef EventFilter_CSCRawToDigi_CSCDDUTrailer_h
#define EventFilter_CSCRawToDigi_CSCDDUTrailer_h
#include <iostream>
#include <cstdint>
#include <cstring> // bzero
#include "DataFormats/CSCDigi/interface/CSCDDUStatusDigi.h"
/** documented at http://www.physics.ohio-state.edu/~cms/ddu/ddu2.html
*/
class CSCDDUTrailer {
public:
CSCDDUTrailer() {
bzero(this, sizeInWords() * 2);
trailer2_1 = trailer2_2 = trailer2_4 = 0x8000;
trailer2_3 = 0xFFFF;
}
CSCDDUTrailer(const CSCDDUStatusDigi& digi) { memcpy(this, digi.trailer(), sizeInWords() * 2); }
void setFromBuffer(uint16_t const* buf) { memcpy(this, buf, sizeInWords() * 2); }
static unsigned sizeInWords() { return 12; }
bool check() const {
//std::cout << std:: hex << "DDUTRAILER CHECK " << trailer2_1 << " "
// << trailer2_2 << " " << trailer2_3 << " "
// << trailer2_4 << std:: dec << std::endl;
return trailer2_1 == 0x8000 && trailer2_2 == 0x8000 && trailer2_3 == 0xFFFF && trailer2_4 == 0x8000;
}
unsigned short* data() { return (unsigned short*)this; }
//These are accessors to use for calling private members
unsigned errorstat() const { return errorstat_; }
unsigned wordcount() const { return word_count_; }
void setWordCount(unsigned wordcount) { word_count_ = wordcount; }
//@@ Tim: This seems wrong to me so just pull it
//@@ void setDMBDAV(int dmbId) {dmb_full_ |= (1 << dmbId);}
unsigned dmb_warn() const { return dmb_warn_; }
unsigned dmb_full() const { return dmb_full_; }
unsigned reserved() const { return whatever; }
private:
/// should be 8000/8000/FFFF/8000
unsigned trailer2_1 : 16;
unsigned trailer2_2 : 16;
unsigned trailer2_3 : 16;
unsigned trailer2_4 : 16;
/// Active DMB Count (4 bits)
unsigned dmb_warn_ : 16;
unsigned dmb_full_ : 16;
unsigned errorstat_ : 32;
// DDU2004
// unsigned reserved_bits : 4;
//unsigned ddu_tts_status : 4;
//unsigned event_status : 8;
//unsigned event_crc : 16;
//
//DDU2000
//unsigned s_link_status : 4;
//unsigned crc_check_word : 16;
//unsigned whatever : 4;
//unsigned event_status : 8;
//
//the following bits change their meaning in DDU2004
unsigned word1 : 4;
unsigned word2 : 4;
unsigned word3 : 4;
unsigned word4 : 4;
unsigned word5 : 4;
unsigned word6 : 4;
unsigned word7 : 4;
unsigned word8 : 4;
/// in 64-bit words
/// DDU_WC = (6 + 25*N_ts*nCFEB + 3*nDMB)
unsigned word_count_ : 24;
unsigned whatever : 4;
///constant, should be 1010
unsigned cms_directive_0xA : 4;
};
#endif
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