def readDLMSPacket2(self, data, reply):
if not data:
return
notify = GXReplyData()
reply.error = 0
eop = 0x7E
#In network connection terminator is not used.
if self.client.interfaceType == InterfaceType.WRAPPER and isinstance(
self.media, GXNet):
eop = None
p = ReceiveParameters()
p.eop = eop
p.waitTime = self.waitTime
if eop is None:
p.Count = 8
else:
p.Count = 5
self.media.eop = eop
rd = GXByteBuffer()
with self.media.getSynchronous():
if not reply.isStreaming():
self.writeTrace(
"TX: " + self.now() + "\t" + GXByteBuffer.hex(data),
TraceLevel.VERBOSE)
print("TX: " + self.now() + "\t" + GXByteBuffer.hex(data))
self.media.send(data)
pos = 0
try:
while not self.client.getData(rd, reply, notify):
if notify.data.size != 0:
if not notify.isMoreData():
t = GXDLMSTranslator()
xml = t.dataToXml(notify.data)
print(xml)
notify.clear()
continue
elif not p.eop:
p.count = self.client.getFrameSize(rd)
while not self.media.receive(p):
pos += 1
if pos == 3:
raise TimeoutException(
"Failed to receive reply from the device in given time."
)
if rd.size == 0:
print("Data send failed. Try to resend " +
str(pos) + "/3")
self.media.send(data, None)
rd.set(p.reply)
p.reply = None
except Exception as e:
self.writeTrace("RX: " + self.now() + "\t" + str(rd),
TraceLevel.ERROR)
print("RX: " + self.now() + "\t" + str(rd))
raise e
self.writeTrace("RX: " + self.now() + "\t" + str(rd),
TraceLevel.VERBOSE)
print("RX: " + self.now() + "\t" + str(rd))
if reply.error != 0:
raise GXDLMSException(reply.error)
def readDLMSPacket2(self, data, reply):
if data == None or len(data) == 0:
return
notify = GXReplyData()
reply.error = 0
succeeded = False
rd = GXByteBuffer()
if not reply.isStreaming():
self.writeTrace(
"TX: " + self.now() + "\t" + GXByteBuffer.hex(data),
TraceLevel.VERBOSE)
self.media.sendall(data)
msgPos = 0
count = 100
pos = 0
try:
while not self.client.getData(rd, reply, notify):
if notify.data.size != 0:
if not notify.isMoreData():
t = GXDLMSTranslator()
xml = t.dataToXml(notify.data)
print(xml)
notify.clear()
msgPos = rd.position
continue
rd.position = msgPos
rd.set(self.media.recv(100))
if pos == 3:
raise ValueError(
"Failed to receive reply from the device in given time.")
if pos != 0:
print("Data send failed. Try to resend " + str(pos) + "/3")
++pos
except Exception as e:
self.writeTrace("RX: " + self.now() + "\t" + rd.__str__(),
TraceLevel.ERROR)
raise e
self.writeTrace("RX: " + self.now() + "\t" + rd.__str__(),
TraceLevel.VERBOSE)
if reply.error != 0:
raise GXDLMSException(reply.error)
class MediaListener(IGXMediaListener):
def __init__(self) -> None:
super().__init__()
self.notify = GXReplyData()
self.client = GXDLMSSecureClient()
self.client.interfaceType = InterfaceType.PDU
self.client.ciphering.security = Security.ENCRYPTION
self.client.ciphering.blockCipherKey = GXCommon.hexToBytes(key_hex)
self.translator = GXDLMSTranslator()
self.reply = GXByteBuffer()
def onError(self, sender, ex):
"""
Represents the method that will handle the error event of a Gurux
component.
sender : The source of the event.
ex : An Exception object that contains the event data.
"""
print("Error has occured. " + str(ex))
def onMediaStateChange(self, sender, e):
"""Media component sends notification, when its state changes.
sender : The source of the event.
e : Event arguments.
"""
print("Media state changed. " + str(e))
def onTrace(self, sender, e):
"""Called when the Media is sending or receiving data.
sender : The source of the event.
e : Event arguments.
"""
print("trace:" + str(e))
def onPropertyChanged(self, sender, e):
"""
Event is raised when a property is changed on a component.
sender : The source of the event.
e : Event arguments.
"""
print("Property {!r} has hanged.".format(str(e)))
def onReceived(self, sender, e: ReceiveEventArgs):
self.reply.set(e.data)
data = GXReplyData()
try:
if not self.client.getData(self.reply, data, self.notify):
self.reply.clear()
#If all data is received.
if self.notify.complete:
if not self.notify.isMoreData():
#Show received data as XML.
xml = self.translator.dataToXml(self.notify.data)
print(xml)
#Print received data.
self.printData(self.notify.value, 0)
#Example is sending list of push messages in first parameter.
if isinstance(self.notify.value, list):
objects = self.client.parsePushObjects(
self.notify.value[0])
#Remove first item because it's not needed anymore.
objects.pop(0)
Valueindex = 1
for obj, index in objects:
self.client.updateValue(
obj, index, self.notify.value[Valueindex])
Valueindex += 1
#Print value
print(
str(obj.objectType) + " " +
obj.logicalName + " " + str(index) + ": " +
str(obj.getValues()[index - 1]))
self.notify.clear()
self.reply.clear()
except Exception as ex:
print(ex)
self.notify.clear()
self.reply.clear()
@classmethod
def printData(cls, value, offset):
sb = ' ' * 2 * offset
if isinstance(value, list):
print(sb + "{")
offset = offset + 1
#Print received data.
for it in value:
cls.printData(it, offset)
print(sb + "}")
offset = offset - 1
elif isinstance(value, bytearray):
#Print value.
print(sb + GXCommon.toHex(value))
else:
#Print value.
print(sb + str(value))
