class Slaves(CompositeNode):
def __init__(self):
self.subnet = VirtualSubNet(self)
return
def configure(self,config):
CompositeNode.configure(self,config)
set_attribute(self, 'debug', debug, config, int)
#
#
if debug: self.debug = debug
#
#
self.port = self #intercept any calls to the port
return
def configuration(self):
config = CompositeNode.configuration(self)
get_attribute(self, 'debug', config, str)
return config
def start(self):
self.device_map = {}
if self.debug: print 'Start modbus serial slave node'
CompositeNode.start(self)
self.subnet.start()
if self.debug: print 'modbus serial slave node started'
return
def stop(self):
self.subnet.stop()
CompositeNode.stop(self)
return
def _find_device(self, address):
if self.device_map.has_key(address):
return self.device_map[address]
try:
for d in self.children_nodes():
if d.address == address:
self.device_map[address] = d
return d
except:
pass
return None
def buffer(self, initializer=None):
return base.buffer(initializer)
def crc(self, byte_array):
return 0 #always answer that crc is good
def read(self, header, n , timeout): #pretend to be a serial port but do nothing
pass
def command(self, buffer): #called from tcp or serial threads
cmd = server.ServerCommand(decode=buffer)
device = self._find_device(cmd.slave_address)
if device:
if self.debug: print 'command received: ' + str(cmd)
response = device.perform_command(cmd)
else:
if self.debug: print 'SerialServer, no device found'
response = None
return response
def __init__(self):
self.subnet = VirtualSubNet(self)
return
def __init__(self):
self.subnet = VirtualSubNet(self)
return
class Slaves(CompositeNode):
def __init__(self):
self.subnet = VirtualSubNet(self)
return
def configure(self, config):
CompositeNode.configure(self, config)
set_attribute(self, 'debug', debug, config, int)
#
#
if debug: self.debug = debug
#
#
self.port = self #intercept any calls to the port
return
def configuration(self):
config = CompositeNode.configuration(self)
get_attribute(self, 'debug', config, str)
return config
def start(self):
self.device_map = {}
if self.debug: print 'Start modbus serial slave node'
CompositeNode.start(self)
self.subnet.start()
if self.debug: print 'modbus serial slave node started'
return
def stop(self):
self.subnet.stop()
CompositeNode.stop(self)
return
def _find_device(self, address):
if self.device_map.has_key(address):
return self.device_map[address]
try:
for d in self.children_nodes():
if d.address == address:
self.device_map[address] = d
return d
except:
pass
return None
def buffer(self, initializer=None):
return base.buffer(initializer)
def crc(self, byte_array):
return 0 #always answer that crc is good
def read(self, header, n,
timeout): #pretend to be a serial port but do nothing
pass
def command(self, buffer): #called from tcp or serial threads
cmd = server.ServerCommand(decode=buffer)
device = self._find_device(cmd.slave_address)
if device:
if self.debug: print 'command received: ' + str(cmd)
response = device.perform_command(cmd)
else:
if self.debug: print 'SerialServer, no device found'
response = None
return response
