Falling Class Reference

Class that triggers a report when binary state changes, on falling edge. More...

Inheritance diagram for Falling:

Collaboration diagram for Falling:

Public Member Functions
def	__init__ (self, theConfig=CfgTrigger(), initState=None)
	Constructor for onChange trigger class. More...
def	test (self, theSig)
	Check if a report should be triggered for the supplied signal. More...
Public Member Functions inherited from Trigger
def	__init__ (self, theConfig=CfgTrigger())
	Constructor for base trigger class. More...

Public Attributes
	isInit
	Flag: Is the system initialized? More...
	pBool
	Previous Boolean value. More...
Public Attributes inherited from Trigger
	config

Detailed Description

Class that triggers a report when binary state changes, on falling edge.

The signal should be binary or somehow testable to True/False.

Constructor & Destructor Documentation

__init__()

def __init__	(		self,
			theConfig = CfgTrigger(),
			initState = None
	)

Constructor for onChange trigger class.

Member Function Documentation

test()

def test	(		self,
			theSig
	)

Check if a report should be triggered for the supplied signal.

Compare the passed signal to that from the last check (if there was one) and return true if they are not equal. For non-trivial signals, the equality binary test should be overloading to return a meaningful binary outcome.

On startup, there may be no previous signal. In that case the first invocation returns a False and stores the signal for future invocations.

Reimplemented from Trigger.

Member Data Documentation

isInit

isInit

Flag: Is the system initialized?

pBool

pBool

Previous Boolean value.

Initalized to False to avoid falling edge on first call.

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

• /home/pvela/python/perceiver/perceiver/reports/triggers.py