Serge NOEL
48 lines
1.6 KiB
Python
48 lines
1.6 KiB
Python
# Poll all grapevine nodes, looking for which are present.
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#
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# If a grapevine node is present, it _removes_ messages addressed
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# to it. We'll report as possibly present all nodes for whom messages
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# are absorbed. Of course, a disconnected grapevine will behave the
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# same way, but it will have lots of nodes reporting present...
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#
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# Author: Bob Jacobsen, copyright 2008
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# JMRI
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import jmri
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import jmri.jmrix
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import jmri.jmrix.grapevine
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# Define Listener to make a note if an answer is received
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class NodeListener(jmri.jmrix.grapevine.SerialListener):
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def message(self, m):
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return
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def reply(self, r):
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global result
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result = False
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return
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jmri.InstanceManager.getDefault(jmri.jmrix.grapevine.GrapevineSystemConnectionMemo).getTrafficController().addSerialListener(NodeListener())
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# now an Automat to loop over all possible nodes and report those that
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# don't reply after a short wait
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class TestLooper(jmri.jmrit.automat.AbstractAutomaton) :
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def init(self) :
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return
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def handle(self) :
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global result
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self.message = jmri.jmrix.grapevine.SerialMessage()
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self.message.setElement(1,119)
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self.message.setElement(3,119)
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for i in range(1,127+1) :
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result = True
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self.message.setElement(0,i+128)
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self.message.setElement(2,i+128)
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jmri.InstanceManager.getDefault(jmri.jmrix.grapevine.GrapevineSystemConnectionMemo).getTrafficController().sendSerialMessage(self.message, None)
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self.waitMsec(200)
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if (result) :
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print "node",i,"may be present"
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return False
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TestLooper().start()
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