Python Twisted接收来自TCP写入串行设备的命令返回响应
我已成功连接到usb调制解调器,客户端可以通过tcp连接到我的反应器。listenTCP,从调制解调器接收的数据将发送回客户端。我想从客户端接收数据并将其发送到调制解调器。我正在努力使其正常工作。任何帮助都将不胜感激!守则:Python Twisted接收来自TCP写入串行设备的命令返回响应,python,serial-port,twisted,Python,Serial Port,Twisted,我已成功连接到usb调制解调器,客户端可以通过tcp连接到我的反应器。listenTCP,从调制解调器接收的数据将发送回客户端。我想从客户端接收数据并将其发送到调制解调器。我正在努力使其正常工作。任何帮助都将不胜感激!守则: from twisted.internet import win32eventreactor win32eventreactor.install() from twisted.internet import reactor from twisted.internet.ser
from twisted.internet import win32eventreactor
win32eventreactor.install()
from twisted.internet import reactor
from twisted.internet.serialport import SerialPort
from twisted.internet.protocol import Protocol, Factory
from twisted.python import log
import sys
log.startLogging(sys.stdout)
client_list = []#TCP clients connecting to me
class USBClient(Protocol):
def connectionFailed(self):
print "Connection Failed:", self
reactor.stop()
def connectionMade(self):
print 'Connected to USB modem'
USBClient.sendLine(self, 'AT\r\n')
def dataReceived(self, data):
print "Data received", repr(data)
print "Data received! with %d bytes!" % len(data)
#check & perhaps modify response and return to client
for cli in client_list:
cli.notifyClient(data)
pass
def lineReceived(self, line):
print "Line received", repr(line)
def sendLine(self, cmd):
print cmd
self.transport.write(cmd + "\r\n")
def outReceived(self, data):
print "outReceived! with %d bytes!" % len(data)
self.data = self.data + data
class CommandRx(Protocol):
def connectionMade(self):
print 'Connection received from tcp..'
client_list.append(self)
def dataReceived(self, data):
print 'Command receive', repr(data)
#Build command, if ok, send to serial port
#????
def connectionLost(self, reason):
print 'Connection lost', reason
if self in client_list:
print "Removing " + str(self)
client_list.remove(self)
def notifyClient(self, data):
self.transport.write(data)
class CommandRxFactory(Factory):
protocol = CommandRx
def __init__(self):
client_list = []
if __name__ == '__main__':
reactor.listenTCP(8000, CommandRxFactory())
SerialPort(USBClient(), 'COM8', reactor, baudrate='19200')
reactor.run()
您的问题不是twisted,而是python。阅读此常见问题解答条目: 问题是,如果您想在串行连接协议中将内容发送到TCP连接的客户机,只需将工厂的引用传递给该协议,这样您就可以使用该引用创建网桥 下面是一些大致实现这一点的示例代码:
class USBClient(Protocol):
def __init__(self, network):
self.network = network
def dataReceived(self, data):
print "Data received", repr(data)
#check & perhaps modify response and return to client
self.network.notifyAll(data)
#...
class CommandRx(Protocol):
def connectionMade(self):
self.factory.client_list.append(self)
def connectionLost(self, reason):
if self in self.factory.client_list:
self.factory.client_list.remove(self)
class CommandRxFactory(Factory):
protocol = CommandRx
def __init__(self):
self.client_list = []
def notifyAll(self, data):
for cli in self.client_list:
cli.transport.write(data)
初始化时,传递引用:
tcpfactory = CommandRxFactory()
reactor.listenTCP(8000, tcpfactory)
SerialPort(USBClient(tcpfactory), 'COM8', reactor, baudrate='19200')
reactor.run()
谢谢,它开始工作了。无法让def notifyAll将数据发送到我的调制解调器。。是这样做的:客户端列表中的cli:cli.transport.write(data)
新代码:
import sys
from twisted.internet import reactor
from twisted.internet.protocol import Factory
from twisted.internet.protocol import Protocol
from twisted.internet.serialport import SerialPort
from twisted.python import log
log.startLogging(sys.stdout)
client_list = []#TCP clients connecting to me
usb_list = []
class USBClient(Protocol):
def __init__(self, network):
self.network = network
self.usb_list = []
def connectionFailed(self):
print "Connection Failed:", self
reactor.stop()
def connectionMade(self):
usb_list.append(self)
print 'Connected to USB modem'
USBClient.sendLine(self, 'AT\r\n')
def dataReceived(self, data):
print "Data received", repr(data)
print "Data received! with %d bytes!" % len(data)
for cli in client_list:
cli.transport.write(data)
#self.network.notifyAll(data)# !!AArgh..!Could not get this to work
pass
def lineReceived(self, line):
print "Line received", repr(line)
def sendLine(self, cmd):
print cmd
self.transport.write(cmd + "\r\n")
def outReceived(self, data):
print "outReceived! with %d bytes!" % len(data)
self.data = self.data + data
class CommandRx(Protocol):
def connectionMade(self):
print 'Connection received from tcp..'
client_list.append(self)
def dataReceived(self, data):
print 'Command receive', repr(data)
for usb in usb_list:
usb.transport.write(data)
def connectionLost(self, reason):
print 'Connection lost', reason
if self in client_list:
print "Removing " + str(self)
client_list.remove(self)
class CommandRxFactory(Factory):
protocol = CommandRx
def __init__(self):
self.client_list = []
def notifyAll(self, data):
for cli in self.client_list:
cli.transport.write('yipee')
if __name__ == '__main__':
tcpfactory = CommandRxFactory()
reactor.listenTCP(8000, tcpfactory)
SerialPort(USBClient(tcpfactory), '/dev/ttyUSB4', reactor, baudrate='19200')
reactor.run()