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GLAST/LAT > DAQ and FSW > FSW > Doxygen Index > QSSP / V0-0-1

Constituent: qssp_print     Tag: sun-gcc

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QSSP_sample.h File Reference

Defines a standard Science Statistics Physics sample. More...

#include "QSD/QSD_timetone.h"

Include dependency graph for QSSP_sample.h:

This graph shows which files directly or indirectly include this file:

Data Structures
struct	_QSSP_timetones
	Captures the information needed to convert a GEM event clock register value into an absolute time. More...
struct	_QSSP_point
	Captures the information needed to uniquely identify a point in the event stream (like the beginning and ending by sequence and time. More...
struct	_QSSP_span
	Defines the beginning and ending of when the sample was taken. More...
struct	_QSSP_statistics
	One set of the statistics. More...
struct	_QSSP_sample
	One statistics sample. More...
Typedefs
typedef _QSSP_timetones	QSSP_timetones
	Typedef for struct _QSSP_timetones.
typedef _QSSP_point	QSSP_point
	Typedef for _QSSP_point.
typedef _QSSP_span	QSSP_span
	Typedef for struct _QSSP_span.
typedef enum _QSSP_type	QSSP_type
	Typedef for enum _QSSP_type.
typedef _QSSP_statistics	QSSP_statistics
	Typedef for struct _QSSP_statistics.
typedef _QSSP_sample	QSSP_sample
	Typedef for struct _QSSP_sample.
Enumerations
enum	_QSSP_type {   QSSP_TYPE_K_GLOBAL_BEG = 0,   QSSP_TYPE_K_NORMAL = 1,   QSSP_TYPE_K_GLOBAL_END = 2 }
	The statistics sample type. More...

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Detailed Description

Defines a standard Science Statistics Physics sample.

Author:

JJRussell - russell@slac.stanford.edu

   CVS $Id: QSSP_sample.h,v 1.1.1.1 2008/04/02 01:19:26 russell Exp $

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Typedef Documentation

QSSP_point

Typedef for _QSSP_point. This structure is used to uniquely identify an event in both time and sequence. As such, it contains enough information to calculate the absolute time of the event. To do this one needs the GEM clock frequency which can be got in an assumption free fashion by capturing the GEM clock value on two successive timetone/1PPS hacks. The difference in the GPS timetone messages gives one the elapsed seconds and the difference in the GEM clock register values gives how many clock ticks have passed during this period. The event sequence number is merely the GEM sequence number extended by watching how many times this sequence counter overflows. (Overflow is defined as going from a given value to a lower value.) While this is an easy enough value to compute, the writer is encouraged to use the value from EDS_fwIxb. This will ensure agreement when readers examine data from different statistics blocks. Note: This structure exists so that it may passed to a convenience routine (likley within THS) for easy filling.

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Enumeration Type Documentation

enum _QSSP_type

The statistics sample type. Enumerator: QSSP_TYPE_K_GLOBAL_BEG  Beginning global record QSSP_TYPE_K_NORMAL  Normal update record QSSP_TYPE_K_GLOBAL_END  Ending global record

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