Serge NOEL
72 lines
2.5 KiB
Python
72 lines
2.5 KiB
Python
# Transfer "Light" Data to an Arduino via Serial Transmission
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# Author: Kevin Appleby 2023 based on a script by
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# Bob Jacobsen and Geoff Bunza as part of the JMRI distribution
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# Version 1.3
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# Connects JMRI Light "Watcher" to an Arduino Output Channel
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# Note that JMRI must be set up to have a valid
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# light table; if you're not using some other DCC connection,
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# configure JMRI to use LocoNet Simulator
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import jarray
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import jmri
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import java
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import purejavacomm
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import java.beans
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# find the port info and open the port
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global extportin
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portname = "/dev/cu.usbmodem14201"
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portID = purejavacomm.CommPortIdentifier.getPortIdentifier(portname)
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try:
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port = portID.open("JMRI", 50)
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except purejavacomm.PortInUseException:
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port = extportin
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extportin = port
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# set options on port
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baudrate = 19200
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port.setSerialPortParams(baudrate,
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purejavacomm.SerialPort.DATABITS_8,
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purejavacomm.SerialPort.STOPBITS_1,
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purejavacomm.SerialPort.PARITY_NONE)
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# Anticipate the Port Opening will restart the Arduino. The following line was in the original script but does not work
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self.delayMsec(2000)
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# get I/O connections for later
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inputStream = port.getInputStream()
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outputStream = port.getOutputStream()
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# define a turnout listener that will
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class LightDatatransfer(java.beans.PropertyChangeListener):
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# initialization
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# registers to receive events
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def __init__(self, id, value) :
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self.name = "AL"+str(id)
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self.on = value # write this value to set on
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self.off = value # write this value to set off
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light = lights.provideLight(self.name)
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light.addPropertyChangeListener(self)
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light.setCommandedState(OFF)
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return
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# on a property change event, first see if
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# right type, and then write appropriate
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# value to port based on new state
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def propertyChange(self, event):
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#print "change",event.propertyName
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#print "from", event.oldValue, "to", event.newValue
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#print "source systemName", event.source.systemName
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if (event.propertyName == "TargetIntensity") :
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if (event.newValue == 0 and event.oldValue != 0) :
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print "set OFF for", event.source.userName
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outputStream.write(event.source.userName)
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outputStream.write(",0")
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if (event.newValue == 1 and event.oldValue != 1) :
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print "set ON for", event.source.userName
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outputStream.write(event.source.userName)
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outputStream.write(",1")
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return
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# The following will set up 68 listeners for Light AL2 though AL69 (by username)
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for x in range(2,70) :
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LightDatatransfer(x,x+100)
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