Serge NOEL
85 lines
1.8 KiB
Python
85 lines
1.8 KiB
Python
#
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# Simple example of connecting to and operating a WiThrottle server to run a train
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# This should run from the Python command line, outside of JMRI itself.
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#
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# Bob Jacobsen 2021
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#
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import telnetlib
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class WiThrottle :
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# Open the connection, set identification, allocate a train
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def open(self) :
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# make connection
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HOST = "localhost"
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PORT = 12090
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self.tn = telnetlib.Telnet(HOST, PORT)
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# set ID
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ID = "Telnet Train" # arbitrary, shows in JMRI
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self.send("N"+ID+"\n")
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# allocate train with short address 3
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self.TRAIN = "S3"
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self.send("MT+"+self.TRAIN+"<;>"+self.TRAIN+"\n")
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# Read and print info back. Needs to be run periodically to flush input.
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def readAll(self) :
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lines = self.tn.read_very_eager()
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print(lines)
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def send(self, line) : # line should end in \n
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self.tn.write(bytearray(line, "UTF-8"))
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# Send a speed command (0-126; -1 for emergency stop)
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def setSpeed(self, speed) :
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self.send("MTA"+self.TRAIN+"<;>V"+str(speed)+"\n")
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return
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# Set train direction (True is forward)
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def setForward(self, dir) :
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if (dir) :
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self.send("MTA"+self.TRAIN+"<;>R1\n")
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else :
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self.send("MTA"+self.TRAIN+"<;>R0\n")
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def close(self) :
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self.tn.close()
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## Simplest possible program to use those
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wiT = WiThrottle()
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wiT.open()
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wiT.readAll()
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# Set the train forward, start it, stop it, reverse it, start it, stop it.
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# There are notional delays to see some movement
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import time
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wiT.setForward(True)
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wiT.setSpeed(63)
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time.sleep(3)
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wiT.readAll()
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wiT.setSpeed(0)
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wiT.setForward(False)
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time.sleep(1)
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wiT.readAll()
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wiT.setSpeed(32)
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time.sleep(6)
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wiT.readAll()
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wiT.setSpeed(0)
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time.sleep(1)
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wiT.readAll()
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# and end gracefully
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wiT.close()
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