def initializeOpticalHead(self):
if self.useOpticalHead and isinstance(self.media, GXSerial):
p = ReceiveParameters()
p.allData = False
p.eop = '\n'
p.waitTime = self.waitTime
with self.media.getSynchronous():
data = "/?!\r\n"
self.writeTrace("TX: " + self.now() + "\t" + data,
TraceLevel.VERBOSE)
self.media.send(data)
if not self.media.receive(p):
raise Exception("Failed to received reply from the media.")
self.writeTrace("RX: " + self.now() + "\t" + str(p.reply),
TraceLevel.VERBOSE)
#If echo is used.
replyStr = str(p.reply)
if data == replyStr:
p.reply = None
if not self.media.receive(p):
raise Exception(
"Failed to received reply from the media.")
self.writeTrace("RX: " + self.now() + "\t" + str(p.reply),
TraceLevel.VERBOSE)
replyStr = str(p.reply)
if not replyStr or replyStr[0] != '/':
raise Exception("Invalid responce : " + replyStr)
baudrate = replyStr[4]
if baudrate == '0':
bitrate = 300
elif baudrate == '1':
bitrate = 600
elif baudrate == '2':
bitrate = 1200
elif baudrate == '3':
bitrate = 2400
elif baudrate == '4':
bitrate = 4800
elif baudrate == '5':
bitrate = 9600
elif baudrate == '6':
bitrate = 19200
else:
raise Exception("Unknown baud rate.")
print("Bitrate is : " + bitrate)
#Send ACK
#Send Protocol control character
controlCharacter = '2'.encode()
#"2" HDLC protocol procedure (Mode E)
#Mode control character
#"2" //(HDLC protocol procedure) (Binary mode)
modeControlCharacter = '2'.encode()
#Set mode E.
tmp = bytearray([
0x06, controlCharacter, baudrate, modeControlCharacter, 13, 10
])
p.reply = None
with self.media.getSynchronous():
self.media.send(tmp)
self.writeTrace(
"TX: " + self.now() + "\t" + GXCommon.toHex(tmp),
TraceLevel.VERBOSE)
p.waitTime = 200
if self.media.receive(p):
self.writeTrace("RX: " + self.now() + "\t" + str(p.reply),
TraceLevel.VERBOSE)
self.media.close()
self.media.dataBits = 8
self.media.parity = Parity.NONE
self.media.stopBits = StopBits.ONE
self.media.baudRate = bitrate
self.media.open()
#This sleep make sure that all meters can be read.
time.sleep(1000)
def initializeConnection(self):
self.media.open()
if self.iec and isinstance(self.media, GXSerial):
p = ReceiveParameters()
p.allData = False
p.eop = '\n'
p.waitTime = self.waitTime
with self.media.getSynchronous():
data = "/?!\r\n"
self.writeTrace("TX: " + self.now() + "\t" + data,
TraceLevel.VERBOSE)
self.media.send(data)
if not self.media.receive(p):
raise Exception("Failed to received reply from the media.")
self.writeTrace("RX: " + self.now() + "\t" + str(p.reply),
TraceLevel.VERBOSE)
#If echo is used.
replyStr = str(p.reply)
if data == replyStr:
p.reply = None
if not self.media.receive(p):
raise Exception(
"Failed to received reply from the media.")
self.writeTrace("RX: " + self.now() + "\t" + str(p.reply),
TraceLevel.VERBOSE)
replyStr = str(p.reply)
if not replyStr or replyStr[0] != '/':
raise Exception("Invalid responce : " + replyStr)
baudrate = replyStr[4]
if baudrate == '0':
bitrate = 300
elif baudrate == '1':
bitrate = 600
elif baudrate == '2':
bitrate = 1200
elif baudrate == '3':
bitrate = 2400
elif baudrate == '4':
bitrate = 4800
elif baudrate == '5':
bitrate = 9600
elif baudrate == '6':
bitrate = 230400
else:
raise Exception("Unknown baud rate.")
print("Bitrate is : " + bitrate)
#Send ACK
#Send Protocol control character
controlCharacter = '2'.encode()
#"2" HDLC protocol procedure (Mode E)
#Mode control character
#"2" //(HDLC protocol procedure) (Binary mode)
modeControlCharacter = '2'.encode()
#Set mode E.
tmp = bytearray([
0x06, controlCharacter, baudrate, modeControlCharacter, 13, 10
])
p.reply = None
with self.media.getSynchronous():
self.media.send(tmp)
self.writeTrace(
"TX: " + self.now() + "\t" + GXCommon.toHex(tmp),
TraceLevel.VERBOSE)
p.waitTime = 200
if self.media.receive(p):
self.writeTrace("RX: " + self.now() + "\t" + str(p.reply),
TraceLevel.VERBOSE)
self.media.close()
self.media.dataBits = 8
self.media.parity = Parity.NONE
self.media.stopBits = StopBits.ONE
self.media.baudRate = bitrate
self.media.open()
#This sleep make sure that all meters can be read.
time.sleep(1000)
reply = GXReplyData()
data = self.client.snrmRequest()
if data:
self.readDLMSPacket(data, reply)
self.client.parseUAResponse(reply.data)
size = self.client.limits.maxInfoTX + 40
self.replyBuff = bytearray(size)
reply.clear()
self.readDataBlock(self.client.aarqRequest(), reply)
self.client.parseAareResponse(reply.data)
reply.clear()
if self.client.authentication > Authentication.LOW:
for it in self.client.getApplicationAssociationRequest():
self.readDLMSPacket(it, reply)
self.client.parseApplicationAssociationResponse(reply.data)
