Serge NOEL
63 lines
1.8 KiB
Python
63 lines
1.8 KiB
Python
# This is an example script for a JMRI "Automat" in Python
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#
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# It listens to two sensors, running a locomotive back and
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# forth between them by changing its direction when a sensor
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# detects the engine. You need to set the speed of the engine
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# using a throttle.
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#
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# Author: Bob Jacobsen, copyright 2004, 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 AutomatExample(jmri.jmrit.automat.AbstractAutomaton) :
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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 init(self):
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# get the sensor and throttle objects
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self.fwdSensor = sensors.provideSensor("12")
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self.revSensor = sensors.provideSensor("13")
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self.throttle = self.getThrottle(1234, True) # long address 1234
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if (self.throttle == None) :
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print "Couldn't assign throttle!"
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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 handle(self):
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# set loco to forward
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self.throttle.setIsForward(True)
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# wait for sensor in forward direction to trigger
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self.waitSensorActive(self.fwdSensor)
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# set loco to reverse
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self.throttle.setIsForward(False)
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# wait for sensor inactive, meaning loco has reversed out
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# (prevent infinite loop if both sensors go active in the overlap)
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self.waitSensorInactive(self.fwdSensor)
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# wait for sensor in reverse direction to trigger
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self.waitSensorActive(self.revSensor)
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# and continue around again
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return 1 # to continue
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# end of class definition
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# create one of these
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a = AutomatExample()
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# set the name, as a example of configuring it
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a.setName("Automat example script")
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# and start it running
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a.start()
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