00001 #!/usr/local/bin/python
00002 #
00003 # Copyright 2004
00004 # by
00005 # The Board of Trustees of the
00006 # Leland Stanford Junior University.
00007 # All rights reserved.
00008 #
00009
00010 __facility__ = "Online"
00011 __abstract__ = "GLAST LAT Coincidence based Trigger System Abstract classes"
00012 __author__ = "Jim Panetta <panetta@slac.stanford.edu> SLAC - GLAST I&T"
00013 __date__ = "2/14/04"
00014 __version__ = "$Revision: 1.1 $"
00015 __release__ = "$Name: R04-12-00 $"
00016 __credits__ = "SLAC"
00017
00018 import LATTE.copyright_SLAC
00019
00020
00021 from TrgObject import TrgObject
00022
00023
00024 """TrgPPSTimer: Abstract interface to 1-PPS timer"""
00025
00026
00027 class TrgPPSTimer(TrgObject):
00028 """\brief TrgPPSTimer class definition
00029 This class controls the GEM's 1-PPS timer.
00030 """
00031 def __init__(self):
00032 """\brief TrgPPSTimer constructor
00033 """
00034 pass
00035
00036 def seconds(self):
00037 """ \brief seconds() method
00038 Return the counts the number of arrived 1-PPS signals since the GEM was reset
00039 \return an integer
00040 """
00041 raise NotImplementedError
00042 pass # returns an integer...
00043
00044 def timebase(self):
00045 """ \brief timebase() method
00046 Return the contains the time, in system clock ticks
00047 (50 nano-seconds), of the last arrived 1-PPS signal.
00048 \return an integer """
00049 raise NotImplementedError
00050 pass # returns an integer...
00051
