Serge NOEL
61 lines
2.1 KiB
Python
61 lines
2.1 KiB
Python
# Sample script to show a JButton which sends a LocoNet
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# message when clicked.
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#
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# In this case, the LocoNet message alternates between "on"
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# and "off" for a PM4 relay. The particular relay is addressed
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# by the board and zone variables set in the code below.
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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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#
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# Note that the message sent to the PM4 has fixed contents for the
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# other three (of four) channels on the card. Will this cause a
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# problem in normal operation?
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import jmri
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import java
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import javax.swing
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# LocoNet PM4 message is (hex)
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# 0xD0 <ARG1>,<ARG2>,<ARG3>,<ARG4>, <CKSUM>
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# <ARG1> = 0x60 + (5 upper bits of section address)
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# <ARG2> = zone*2 + 16*(3 lower bits of section address)
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# <ARG3> = 0x30 (or 0x10?)
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# set the intended LocoNet connection by its index; when you have just 1 connection index = 0
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connectionIndex = 0
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# create the button, and add an action routine to it
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b = javax.swing.JButton("Set On")
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def whenMyButtonClicked(event) :
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# find out whether to set the output on or off; change button label
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if (b.getText() == "Set On") :
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b.setText("Set Off")
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on = 1
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else :
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b.setText("Set On")
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on = 0
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# change the next two lines to select the right output
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zone = 2 # 0 to 3, corresponding to A - D
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board = 12 # PM4 board number
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# format and send the specific LocoNet message
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packet = jmri.jmrix.loconet.LocoNetMessage(6)
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packet.setElement(0, 0xD0)
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packet.setElement(1, 0x72+(((board-1)/128)&0x1))
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packet.setElement(2, ((board-1)&0x7F))
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packet.setElement(3, 0x3F) # F in lower bits means all AR
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packet.setElement(4, 0x10+(on << zone)) # set the control bit for just the channel
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jmri.InstanceManager.getList(jmri.jmrix.loconet.LocoNetSystemConnectionMemo).get(connectionIndex).getLnTrafficController().sendLocoNetMessage(packet)
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return
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b.actionPerformed = whenMyButtonClicked
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# create a frame to hold the button, put button in it, and display
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f = javax.swing.JFrame("Section Power")
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f.contentPane.add(b)
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f.pack()
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f.show()
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