JTRIGGER::JChecksum Struct Reference

Auxiliary class to perform check-sum on raw data. More...

#include <JChecksum.hh>

Classes
struct	error
	Error. More...
struct	result_type
	Auxiliary data structure for result of checksum. More...

Public Types
enum	error_types {   EPMT_t = 1 , ETDC_t , TIME_t , EUDP_t ,   SIZE_t }
	Error types. More...
typedef result_type::const_iterator	const_iterator
typedef result_type::const_reverse_iterator	const_reverse_iterator

Public Member Functions
	JChecksum ()
	Default constructor. More...
const result_type &	operator() (const JDAQSuperFrame &frame) const
	Check sum. More...

Private Attributes
std::vector< JDAQHit::JTDC_t >	t0
result_type	buffer

Detailed Description

Auxiliary class to perform check-sum on raw data.

Definition at line 41 of file JChecksum.hh.

Member Typedef Documentation

const_iterator

typedef result_type::const_iterator JTRIGGER::JChecksum::const_iterator

Definition at line 119 of file JChecksum.hh.

const_reverse_iterator

typedef result_type::const_reverse_iterator JTRIGGER::JChecksum::const_reverse_iterator

Definition at line 120 of file JChecksum.hh.

Member Enumeration Documentation

error_types

enum JTRIGGER::JChecksum::error_types

Error types.

Enumerator
EPMT_t	PMT number error.
ETDC_t	TDC value error.
TIME_t	Time order error.
EUDP_t	UDP packet error.
SIZE_t	size error

Definition at line 45 of file JChecksum.hh.

                     {
      EPMT_t = 1,      //!< PMT number error
      ETDC_t,          //!< TDC value  error
      TIME_t,          //!< Time order error
      EUDP_t,          //!< UDP packet error
      SIZE_t           //!< size       error
    };

Constructor & Destructor Documentation

JChecksum()

JTRIGGER::JChecksum::JChecksum ( )

inline

Default constructor.

Definition at line 126 of file JChecksum.hh.

    {
      t0.resize(NUMBER_OF_PMTS, 0);
    }

Member Function Documentation

operator()()

const result_type& JTRIGGER::JChecksum::operator() ( const JDAQSuperFrame &  frame ) const

inline

Check sum.

The following checks are made:

1. UDP packet assembly is complete;
2. PMT number greater or equals zero and less than NUMBER_OF_PMTS;
3. TDC value less than frame time (with 5% margin);
4. TDC values from same PMT are monotonously increasing;

Parameters

frame

DAQ frame

Returns

list of errors; empty if all okay

Definition at line 144 of file JChecksum.hh.

    {
      using namespace std;
      using namespace KM3NETDAQ;
 
      const JDAQHit::JTDC_t Tmax = (JDAQHit::JTDC_t) (getTimeSinceRTS(frame.getFrameIndex()) + 1.05 * getFrameTime());
 
      buffer.clear();
 
      for (vector<JDAQHit::JTDC_t>::iterator i = t0.begin(); i != t0.end(); ++i) {
        *i = 0;
      }
 
      if (frame.size() > MAXIMAL_FRAME_SIZE) {
        buffer.push_back(error(-1, SIZE_t));
      }
 
      if (!frame.testDAQStatus()) {
        buffer.push_back(error(-1, EUDP_t));
      }
 
      for (JDAQSuperFrame::const_iterator hit = frame.begin(); hit != frame.end(); ++hit) {
 
        const JDAQHit::JTDC_t pmt = hit->getPMT();
        const JDAQHit::JTDC_t tdc = hit->getT();
 
        if (pmt < NUMBER_OF_PMTS) {
 
          if (tdc < t0[pmt]) {
            buffer.push_back(error(distance(frame.begin(), hit), TIME_t));
          }
 
          if (tdc > Tmax) {
            buffer.push_back(error(distance(frame.begin(), hit), ETDC_t));
          }
 
          t0[pmt] = tdc;
 
        } else {
 
          buffer.push_back(error(distance(frame.begin(), hit), EPMT_t));          
        }
      }
 
      return buffer;
    }

Member Data Documentation

t0

std::vector<JDAQHit::JTDC_t> JTRIGGER::JChecksum::t0

mutableprivate

Definition at line 192 of file JChecksum.hh.

buffer

result_type JTRIGGER::JChecksum::buffer

mutableprivate

Definition at line 193 of file JChecksum.hh.

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The documentation for this struct was generated from the following file:

• JChecksum.hh