TrgMiniGLTRegisters.py

#!/usr/local/bin/python
#
#                               Copyright 2004
#                                     by
#                        The Board of Trustees of the
#                     Leland Stanford Junior University.
#                            All rights reserved.
#

__facility__ = "Online"
__abstract__ = "GLAST LAT Coincidence based Trigger System Interface classes"
__author__   = "Jim Panetta <panetta@slac.stanford.edu> SLAC - GLAST I&T"
__date__     = "2/14/04"
__version__  = "$Revision: 2.1 $"
__release__  = "$Name: R04-12-00 $"
__credits__  = "SLAC"

import LATTE.copyright_SLAC

"""TrgMiniGLTRegisters: Register shape definitions for a  MiniGLT based trigger system
"""

from TrgMiniGLTAbstract import TrgMiniGLTAbstract

class TrgMiniGLTRegisters(TrgMiniGLTAbstract):
  """\brief Register shape definition class for the MiniGLT
  This class defines the shapes of the registers and bitfields used
  in the MiniGLT
  """
  def __init__(self):
    TrgMiniGLTAbstract.__init__(self)

  #############  Pure Virtual function implementation from parents
  def parity(self):
    return 0x0 & 0x1

  def tag(self):
    return 0x0 & 0x3

  def eventNumber(self):
    return 0x0 & 0x7fff

  def destination(self):
    # There are exactly two engines in the MiniGLT.
    # 0) User defined engine
    # 15) Sweep Marker engine
    # Use the user-defined engine for everything.
    eng = self.engines().engine(0).request()
    return eng.destination()

  def marker(self):
    eng = self.engines().engine(0).request()
    return eng.marker()

  def tack(self):
    eng = self.engines().engine(0).request()
    return ( eng.sequence()     & 0x1  )

  def zeroSuppress(self):
    eng = self.engines().engine(0).request()
    return eng.zeroSuppress()

  def fourRangeReadout(self):
    eng = self.engines().engine(0).request()
    return eng.fourRange()

  def calStrobe(self):
    eng = self.engines().engine(0).request()
    return (( eng.sequence()     & 0x2  ) >> 1)

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