On Mon, 9 Feb 2009 05:13:10 -0800 (PST), Li Han <[email protected]> wrote:
Hi, I need to use radio to connect two local ip network, each local
network has a server computer which connects to a radio with RS-232
interface. I need to write a program to convert the local ip packet
into RS-232 packet, so the radio can send packetes to the remote
radio. I don't want to reinvent the wheel, is there anyone could give
me some suggestions?
You can proxy between any two kinds of connection pretty easily with
Twisted (untested):
from twisted.internet import serialport, protocol, reactor
from twisted.protocols import portforward
class SerialPortServer(portforward.Proxy):
def connectionMade(self):
# Stop the server, since only one thing can talk to the serial port
# at a time.
tcpPort.stopListening()
# Hook up the proxy between this TCP connection and the serial port.
self.peer = portforward.Proxy()
self.peer.setPeer(self)
self._serialPort = serialport.SerialPort(self.peer, '/dev/ttyS0',
reactor)
factory = protocol.ServerFactory()
factory.protocol = SerialPortServer
tcpPort = reactor.listenTCP(12345, factory)
reactor.run()
Jean-Paul
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