Serge NOEL
82 lines
2.5 KiB
Python
82 lines
2.5 KiB
Python
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# This is an example script for putting a "N-way" selector
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# on a panel. The panel contains N sensors (in this example
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# numbered 101, 102, 103). When one is clicked on the panel,
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# the others are forced to inactive and the program sets
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# outputs appropriately (in this case setting turnouts 101 and 102)
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#
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# For N large, this would be better done with arrays and closures, but
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# for N = 3 a direct approach is better.
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#
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# Author: Bob Jacobsen, copyright 2005
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# Part of the JMRI distribution
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import jarray
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import jmri
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class NSelectorExample(jmri.jmrit.automat.Siglet) :
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# init() is called exactly once at the beginning to do
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# any necessary configuration.
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def defineIO(self):
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# get the sensor objects
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self.s1 = sensors.provideSensor("101")
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self.s2 = sensors.provideSensor("102")
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self.s3 = sensors.provideSensor("103")
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# get the turnout (output) objects
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self.t1 = turnouts. provideTurnout("101")
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self.t2 = turnouts. provideTurnout("102")
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# set a known starting point
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self.current = 1
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self.s1.setState(ACTIVE)
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# Register the inputs so setOutput will be called when needed.
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self.setInputs(jarray.array([self.s1, self.s2, self.s3], jmri.NamedBean))
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return
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# handle() is called repeatedly until it returns false.
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#
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# Modify this to do your calculation.
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def setOutput(self):
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print self.current,"is current"
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# check each in turn
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if ( (self.current != 1) and (self.s1.state == ACTIVE) ) :
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self.s2.state = INACTIVE
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self.s3.state = INACTIVE
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self.current = 1
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self.t1.state = THROWN
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self.t2.state = CLOSED
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elif ( (self.current != 2) and (self.s2.state == ACTIVE) ) :
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self.s1.state = INACTIVE
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self.s3.state = INACTIVE
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self.current = 2
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self.t1.state = CLOSED
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self.t2.state = THROWN
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elif ( (self.current != 3) and (self.s3.state == ACTIVE) ) :
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self.s1.state = INACTIVE
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self.s2.state = INACTIVE
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self.current = 3
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self.t1.state = CLOSED
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self.t2.state = CLOSED
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# and continue around again
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print "return"
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return None # to continue
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# end of class definition
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# create one of these
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a = NSelectorExample()
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# set the name, as a example of configuring it
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a.setName("NSelectorExample example script")
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# and start it running
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a.start()
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