|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
|
// 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"
/** documented at http://www.physics.ohio-state.edu/~cms/ddu/ddu2.html
*/
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); }
/// for reference www.physics.ohio-state.edu/%7Ecms/dcc/outdatafmt.html
/// dcc_trail1 should be EF
unsigned fifo_status : 8;
unsigned ddu_data_status2 : 24;
unsigned ddu_data_status1 : 16;
unsigned readout_time : 8;
unsigned dcc_trail1 : 8;
/// this line defined by CMS CDF
/// http://cmsdoc.cern.ch/cms/TRIDAS/horizontal/
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
|