Serge NOEL
74 lines
2.2 KiB
Python
74 lines
2.2 KiB
Python
# Simple Event Listener to translate a group of 8 sensor "bits" into a single number
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# In this example, 8 bits are transformed into a number put in a memory
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# Jerry Grochow, copyright 2020
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# Based on listenerexample.py by: Bob Jacobsen, copyright 2004. Part of the JMRI distribution
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import java
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import java.beans
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import jmri
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# Define the listener
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class MyListener(java.beans.PropertyChangeListener):
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def propertyChange(self, event):
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# Create an array to translate sensor state (used as an index to the array) back into a bit stream:
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# sensor active = 2 so statetonum[2] is set to a 1; all other entries are set to 0
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statetonum = [0, 0, 1, 0, 0]
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#Sensor name array
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sensorName = ["CS5041", "CS5042", "CS5043", "CS5044", "CS5045", "CS5046", "CS5047", "CS5048"]
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print "Change:",event.propertyName, " from", event.oldValue, "to", event.newValue
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print " Source systemName: ", event.source.systemName, " userName: ", event.source.userName
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#Get the memory where the result is to be stored
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mem = memories.getMemory("IM5001")
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if mem is None:
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print "IM5001 does not exist"
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return
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mem.setComment("Speed Memory")
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#Check that the sensors exist
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sXall = 0
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sX = []
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i = -1
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for sName in sensorName:
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i += 1
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sX.append(sensors.getSensor(sName))
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if sX[i] is None:
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print sName, " does not exist"
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sXall = 1
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else:
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sX[i].setComment("Speed bit " + str(i))
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if sXall != 0:
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return
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#Create bits from states
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sBitVal = []
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for s in sX:
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sBitVal.append(statetonum[s.state])
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print sBitVal
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mem.value = sBitVal[0] + sBitVal[1] * 2 + sBitVal[2] * 4 + sBitVal[3] * 8 + sBitVal[4] * 16 + sBitVal[5] * 32 + sBitVal[6] * 64 + sBitVal[7] * 128
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print "Memory speed set", mem.value
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print " "
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return
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#Attach that listener to a particular turnout. The variable is used to remember the listener so we can remove it later
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lstnr5 = MyListener()
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sensors.getSensor("CS5002").addPropertyChangeListener(lstnr5) #Listen on two sensors in this case
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sensors.getSensor("CS5003").addPropertyChangeListener(lstnr5)
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print "Listener 5 set on CS5002 CS5003"
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#remove the listener
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#lstnr5.removePropertyChangeListener()
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