class TaskRunner(object):
def __init__(self, loop):
self.mbusexecutor = ThreadPoolExecutor(1) # separate thread for MBus operations over serial interface (slow)
self.loop = loop
self.arguments = {}
self.mbusConn = None
def __del__(self):
self.closeMbusConnection()
def get_argument(
self, name, default, strip=True
): # mimicing HTTPRequestHander object make function usable both on HTTPRequestHandler- and TaskRunner-objects
return self.arguments[name] if name in self.arguments else default
@gen.coroutine
def bgheartbeat():
out = StringIO()
_scheduler.print_jobs(out=out)
_log.info("%s" % out.getvalue())
@gen.coroutine
def bgsetup(self):
firstrun = datetime.fromtimestamp(
divmod(datetime.now().timestamp(), bgloop_syncto)[0] * bgloop_syncto + bgloop_syncto
)
_log.info("Background jobs first run at %s" % firstrun)
_scheduler.add_job(TaskRunner.bgheartbeat, "interval", seconds=60, next_run_time=firstrun)
_scheduler.add_job(TaskRunner.readAndStoreMbusData, "interval", args=[self], seconds=60, next_run_time=firstrun)
_scheduler.add_job(PowerPoller.getPowerData, "interval", seconds=5, next_run_time=firstrun)
out = StringIO()
_scheduler.print_jobs(out=out)
_log.info("%s" % out.getvalue())
return
@gen.coroutine
def dbUpsertMbusSlaveInfo(self, slaveinfo, addr):
_log.info("Updating (or inserting) mbus slave metadata to database")
result = 0
sqlbuf = StringIO()
sqlbuf.write(
"UPDATE OR IGNORE aMbusSlaveInfo SET\n"
) # update fails intentionally when row not existing, then do insert
sqlbuf.write(" manufacturer = '%s',\n" % slaveinfo["Manufacturer"])
sqlbuf.write(" version = %d,\n" % int(slaveinfo["Version"]))
sqlbuf.write(" productName = '%s',\n" % slaveinfo["ProductName"])
sqlbuf.write(" medium = '%s',\n" % slaveinfo["Medium"])
sqlbuf.write(" accessNumber = %d,\n" % int(slaveinfo["AccessNumber"]))
sqlbuf.write(" signature = '%s',\n" % slaveinfo["Signature"])
sqlbuf.write(" lastStatus = '%s',\n" % slaveinfo["Status"])
sqlbuf.write(" rowUpdatedTimestamp = '%s'\n" % datetime.utcnow().strftime(df))
sqlbuf.write("WHERE address = %d AND id = %s" % (addr, slaveinfo["Id"]))
_log.debug("SQL:\n%s" % sqlbuf.getvalue())
# cur.execute(sqlbuf.getvalue())
try:
result = yield DBHelperSQLITE.dbExecute(
_dbHelper, sqlbuf.getvalue(), parseresp=None, script=False, returnrowcount=True
)
except Exception as e:
_log.warning("Error during database write : %s" % str(e))
pass
if not result: # no rows where updated so insert instead
_log.warning("Inserting new row for mbus slave metadata, should only happen when data is recreated")
sqlbuf.truncate(0)
sqlbuf.seek(0)
sqlbuf.write(
"INSERT INTO aMbusSlaveInfo(address,id,manufacturer,version,productName,medium,accessNumber,signature,lastStatus,rowCreatedTimestamp)\n"
)
sqlbuf.write(
" VALUES (%d,'%s','%s',%d,'%s','%s',%d,'%s','%s','%s');\n"
% (
addr,
slaveinfo["Id"],
slaveinfo["Manufacturer"],
int(slaveinfo["Version"]),
slaveinfo["ProductName"],
slaveinfo["Medium"],
int(slaveinfo["AccessNumber"]),
slaveinfo["Signature"],
slaveinfo["Status"],
datetime.utcnow().strftime(df),
)
)
_log.debug("SQL:\n%s" % sqlbuf.getvalue())
# cur.execute(sqlbuf.getvalue())
try:
result = yield DBHelperSQLITE.dbExecute(
_dbHelper, sqlbuf.getvalue(), parseresp=None, script=False, returnrowcount=True
)
except Exception as e:
_log.warning("Error during database write : %s" % str(e))
pass
# self.bgDbConn.commit()
return result
@gen.coroutine
def dbInsertMbusDataRecords(self, mbusdata, addr):
_log.info("Inserting mbus slave data records to database")
sqlbuf = StringIO()
sqlbuf2 = StringIO()
s2len = 0
slaveid = mbusdata["SlaveInformation"]["Id"]
accessnum = mbusdata["SlaveInformation"]["AccessNumber"]
mbusdf = "%Y-%m-%dT%H:%M:%S" # 2016-01-28T06:48:13 (In UTC)
creationtime = datetime.utcnow().strftime(df)
result = 0
for record in mbusdata["DataRecord"]:
_log.debug(
"Inserting mbus slave data records (address = %d , id = %d) to database" % (addr, int(record["@id"]))
)
sqlbuf.write(
"INSERT INTO \
aMbusDataRecord(address,id,recordId,recordFunction,recordStorageNumber,recordUnit,recordValue,recordTimestampRaw,recordTimestamp,rowCreatedTimestamp,accessNumber)\n"
)
sqlbuf.write(
" VALUES (%d,'%s',%d,'%s',%d,'%s','%s','%s','%s','%s',%d);\n"
% (
addr,
slaveid,
int(record["@id"]),
record["Function"],
int(record["StorageNumber"]),
record["Unit"],
record["Value"],
record["Timestamp"],
datetime.strptime(record["Timestamp"], mbusdf).replace(tzinfo=timezone.utc).strftime(df),
datetime.utcnow().strftime(df),
int(accessnum),
)
)
optionals = {
k: record.get(k, None) for k in ("@frame", "Tariff", "Device") if k in record
} # checking to see if optional data available in record
if len(optionals):
m = {"@frame": "recordFrame", "Tariff": "recordTariff", "Device": "recordDevice"}
_log.debug("Mbus response contains optionals: %s" % optionals)
s2len += sqlbuf2.write("UPDATE aMbusDataRecord SET")
for i, key in enumerate(optionals):
if i != 0:
s2len += sqlbuf2.write(" AND")
s2len += sqlbuf2.write(" %s = '%s'" % (m[key], optionals[key]))
s2len += sqlbuf2.write(
" WHERE address=%d AND id='%s' AND recordId='%s' AND recordTimestamp='%s';\n"
% (addr, slaveid, record["@id"], creationtime)
)
_log.debug("SQL:\n%s" % sqlbuf.getvalue())
# cur.executescript(sqlbuf.getvalue())
try:
result = yield DBHelperSQLITE.dbExecute(
_dbHelper, sqlbuf.getvalue(), parseresp=None, script=True, returnrowcount=True
)
except Exception as e:
_log.warning("Error during database write : %s" % str(e))
pass
if s2len > 0:
_log.debug("SQL(Optionals):\n%s" % sqlbuf2.getvalue())
# cur.executescript(sqlbuf2.getvalue())
try:
result = yield DBHelperSQLITE.dbExecute(
_dbHelper, sqlbuf2.getvalue(), parseresp=None, script=True, returnrowcount=True
)
except Exception as e:
_log.warning("Error during database write : %s" % str(e))
pass
# self.bgDbConn.commit()
return result
@gen.coroutine
def readAndStoreMbusData(self):
mbus_addresses = [1, 15, 31] # m-bus primary addresses to request data from
# mbus_addresses = [1] # m-bus primary addresses to request data from
reply_dict = {}
if not self.mbusConn:
_log.info("M-bus connnection not opened previously, opening now..")
self.mbusConn = yield self.openMbusConnection()
for addr in mbus_addresses:
try:
res = yield self.readMbus(addr)
_log.debug("address: %d resp:\n%s" % (addr, json.dumps(res, indent=4)))
if res:
reply_dict[addr] = res
rowsUpdated = yield self.dbUpsertMbusSlaveInfo(
reply_dict[addr]["MBusData"]["SlaveInformation"], addr
)
if rowsUpdated: # only try to add records if previous sql was successful
rowsUpdated = yield self.dbInsertMbusDataRecords(reply_dict[addr]["MBusData"], addr)
except Exception as e:
_log.error(
"Exception in m-bus read or data insert: addr: %s, type %s, desc: %s" % (addr, type(e), str(e))
)
pass
if len(reply_dict):
_log.info("Successful m-bus read, aggregating MC302 records")
res = yield self.aggregateMC302DataRecords()
# for k,resp in enumerate(reply_dict):
# _log.info("i: %s key:%s value:\n%s" % (k,resp,reply_dict[resp]))
else:
_log.info("No data received over m-bus")
# mbusConn = yield self.closeMbusConnection() # FIX: don't close all the time
return
@run_on_executor(executor="mbusexecutor")
def openMbusConnection(self):
try:
_log.info("Opening m-bus connection on device '%s'" % mbusSerialPort)
self.mbusConn = MBus(device=mbusSerialPort)
self.mbusConn.connect()
except Exception as e:
_log.error("Exception while connecting to m-bus : type %s, desc: %s" % (type(e), str(e)))
raise Exception(e)
return self.mbusConn
@run_on_executor(executor="mbusexecutor")
def closeMbusConnection(self):
try:
_log.info("Closing m-bus connection")
self.mbusConn.disconnect()
self.mbusConn = None
except Exception as e:
_log.error("Exception while closing connection to m-bus : type %s, desc: %s" % (type(e), str(e)))
raise Exception(e)
return self.mbusConn
@run_on_executor(executor="mbusexecutor")
def readMbus(self, addr=0):
reply = None
try:
self.mbusConn.send_request_frame(addr)
reply = xmltodict.parse(
self.mbusConn.frame_data_xml(self.mbusConn.frame_data_parse(self.mbusConn.recv_frame()))
) # xmltodict works directly on the byte-string xml from libmbus
except Exception as e:
_log.error(
"Exception while requesting data from m-bus : mbus-address: %d, type %s, desc: %s"
% (addr, type(e), str(e))
)
raise Exception(e)
return reply
def getFactor(self, exp=""):
factor = 1.0
if exp == "m":
factor = float(1 / 1000)
elif exp == "my":
factor = float(1 / 1000000)
elif exp == "10":
factor = float(10)
elif exp == "100":
factor = float(100)
elif exp == "k":
factor = float(1000)
elif exp == "10 k":
factor = float(10000)
elif exp == "100 k":
factor = float(100000)
elif exp == "M":
factor = float(1000000)
elif exp == "T":
factor = float(1000000000)
elif exp.startswith("1e"):
factor = float(exp)
return factor
@gen.coroutine
def aggregateMC302DataRecords(self):
# merge 30 mbus data record rows into 1 row and update SlaveInfo
_log.info("Aggregating mc302 records...")
_log.debug("Get timestamp of latest MC302 record update...")
# Find all mbus slaves and their addresses
sql = "select distinct id,address from aMbusSlaveInfo"
result = []
try:
result = yield DBHelperSQLITE.dbExecute(_dbHelper, sql, parseresp=None, script=False, returnrowcount=False)
except Exception as e:
_log.warning("Error during database operation : %s" % str(e))
pass
slaves = {}
for row in result:
slaves[row[0]] = {}
slaves[row[0]]["address"] = row[1]
# Find all last aMbusMC302Record-update for the slaves
sql = "select id,max(recordTimestamp) from aMbusMC302Record group by id"
result = []
try:
result = yield DBHelperSQLITE.dbExecute(_dbHelper, sql, parseresp=None, script=False, returnrowcount=False)
except Exception as e:
_log.warning("Error during database operation : %s" % str(e))
pass
for row in result:
_log.info(row)
if slaves[row[0]]:
slaves[row[0]]["lastUpdate"] = row[1]
sqlbuf = StringIO()
# Loop over slave aggregating data
for id, val in slaves.items():
# TABLE aMbusDataRecord
# rowid INTEGER PRIMARY KEY NOT NULL,
# address INTEGER NOT NULL, /* Mbus primary address*/
# id TEXT NOT NULL, /* Mbus slave (SlaveInformation) id*/
# recordId INTEGER NOT NULL, /* XML: /MBusData/Record@id */
# recordFrame TEXT, /* XML: /MBusData/Record@frame (optional), not clear when this data is received but libmbus xml has reserved space for this */
# recordFunction TEXT NOT NULL, /* XML: /MBusData/Record/Function */
# recordStorageNumber INTEGER, /* XML: /MBusData/Record/StorageNumber */
# recordTariff TEXT, /* XML: /MBusData/Record/Tariff (optional) */
# recordDevice TEXT, /* XML: /MBusData/Record/Device (optional) */
# recordUnit TEXT NOT NULL, /* XML: /MBusData/Record/Unit */
# recordValue INTEGER NOT NULL, /* XML: /MBusData/Record/Value */
# recordTimestampRaw TEXT NOT NULL, /* XML: /MBusData/Record/Timestamp */
# recordTimestamp TEXT NOT NULL, /* Parsed from /MBusData/Record/Timestamp */
# rowCreatedTimestamp INTEGER NOT NULL,
# accessNumber INTEGER,
sql = "SELECT distinct id,address,recordTimestamp,accessNumber FROM aMbusDataRecord WHERE id = '%s'" % id
if "lastUpdate" in val:
sql += " AND recordTimestamp > '%s'" % val["lastUpdate"]
sql += ";\n"
timestamps = []
try:
timestamps = yield DBHelperSQLITE.dbExecute(
_dbHelper, sql, parseresp=None, script=False, returnrowcount=False
)
except Exception as e:
_log.warning("Error during database operation : %s" % str(e))
pass
creationtime = datetime.utcnow().strftime(df)
for ts in timestamps:
curr_id = ts[0]
curr_addr = ts[1]
curr_ts = ts[2]
curr_acc = ts[3]
# TABLE aMbusMC302Record
# rowId INTEGER PRIMARY KEY NOT NULL,
# accessNumber INTEGER NOT NULL, /* Slave MBus response sequence number */
# address INTEGER NOT NULL, /* Mbus primary address*/
# id TEXT NOT NULL, /* Mbus slave (SlaveInformation) id*/
# recordTimestampRaw TEXT, /* same for all data records in single Mbus response*/
# recordTimestamp TEXT, /* parsed value of raw */
# heatingEnergy INTEGER, /* Heating energy (cumulative, non-resettable) converted to Wh from 1|Instantaneous value|0|Energy;100;Wh */
# coolingEnergy INTEGER, /* Cooling energy (cumulative, non-resettable) converted to Wh from 2|Instantaneous value|0|Energy;100;Wh */
# energyM3T1 INTEGER, /* Energy mˆ3 * T1 (cumulative Volume * Temperature) from 3|Instantaneous value|0|Manufacturer specific */
# energyM3T2 INTEGER, /* Energy mˆ3 * T2 (cumulative Volume * Temperature) from 4|Instantaneous value|0|Manufacturer specific */
# volume INTEGER, /* Current volume (cumulative converted to dm3) from 5|Instantaneous value|0|Volume;m;m^3 */
# hourCounter INTEGER, /* Hour counter (non-resettable) from 6|Instantaneous value|0|On time (hours) */
# errorHourCounter INTEGER, /* Error hour counter (cumul hours in error, no resettable) from 7|Value during error state|0|On time (hours) */
# temp1 REAL, /* Current (Flow) Temperature T1 (converted to deg.Celsius) from 8|Instantaneous value|0|Flow temperature;1e-2;deg C */
# temp2 REAL, /* Current (Return) Temperature T2 (converted to deg.Celsius) from 9|Instantaneous value|0|Return temperature;1e-2;deg C */
# deltaT1T2 REAL, /* Temperature difference T1-T2 (converted to deg.Celsius) from 10|Instantaneous value|0|Temperature Difference;1e-2;deg C */
# power INTEGER, /* Current power (converted to W) from 11|Instantaneous value|0|Power;100;W */
# powerMax INTEGER, /* Maximum power since XX (converted to Watt) from 12|Maximum value|0|Power;100;W */
# flow INTEGER, /* Current water flow (converted to dm3/h) from 13|Instantaneous value|0|Volume flow;m;m^3/h */
# flowMax INTEGER, /* Maximum water flow since XX (converted to dm3/h) 14|Maximum value|0|Volume flow;m;m^3/h */
# errorFlags TEXT, /* Error flags from 15|Instantaneous value|0|Error flags */
# timePoint TEXT, /* Date+Time from 16|Instantaneous value|0|Time Point (time & date) */
# targetHeatingEnergy INTEGER,/* Heating energy since targetTimepoint (in Wh) from 17|Instantaneous value|1|Energy;100;Wh */
# targetCoolingEnergy INTEGER, /* Cooling energy since targetTimepoint (in Wh) from 18|Instantaneous value|1|Energy;100;Wh */
# targetEnergyM3T1 INTEGER, /* Energy mˆ3 * T1 since targetTimepoint from 19|Instantaneous value|1|Manufacturer specific */
# targetEnergyM3T2 INTEGER, /* Energy mˆ3 * T2 since targetTimepoint from 20|Instantaneous value|1|Manufacturer specific */
# targetVolume INTEGER, /* Volume since targetTimepoint (in dm3) from 21|Instantaneous value|1|Volume;m;m^3 */
# targetPowerMax INTEGER, /* Max power since targetTimepoint (in Watt) from 22|Maximum value|1|Power;100;W */
# targetFlowMax INTEGER, /* Max flow since targetTimepoint (in dm3/h) from 23|Maximum value|1|Volume flow;m;m^3/h */
# targetTimepoint TEXT, /* Target time point (date) from 24|Instantaneous value|1|Time Point (date) */
# rowCreatedTimestamp TEXT,
# UNIQUE (accessNumber,id,recordTimestamp) ON CONFLICT REPLACE
# Insert row
sql = (
"INSERT INTO aMbusMC302Record(id,address,recordTimestamp,accessNumber,rowCreatedTimestamp) VALUES ('%s',%d,'%s',%d,'%s');\n"
% (curr_id, curr_addr, curr_ts, curr_acc, creationtime)
)
try:
result = yield DBHelperSQLITE.dbExecute(
_dbHelper, sql, parseresp=None, script=False, returnrowcount=True
)
except Exception as e:
_log.warning("Error during database operation : %s" % str(e))
pass
_log.debug(sql)
sql = (
"SELECT address,id,recordId,recordStorageNumber,recordUnit,recordValue FROM aMbusDataRecord WHERE id = '%s' AND recordTimestamp = '%s';\n"
% (curr_id, curr_ts)
)
records = []
try:
records = yield DBHelperSQLITE.dbExecute(
_dbHelper, sql, parseresp=None, script=False, returnrowcount=False
)
except Exception as e:
_log.warning("Error during database operation : %s" % str(e))
pass
# reuse sqlbuf, empty it first truncate+seek
sqlbuf.truncate(0)
sqlbuf.seek(0)
tmpbuf = StringIO()
for record in records:
tmpbuf.truncate(0)
tmpbuf.seek(0)
curr_recid = record[2]
curr_recstor = record[3]
curr_recunit = record[4]
curr_value = record[5]
factor = 1.0
if ";" in curr_recunit:
parts = curr_recunit.split(";")
factor = self.getFactor(str(parts[1]))
tmpbuf.write("UPDATE aMbusMC302Record SET \n")
if curr_recid == 0: # skip "Firmware"
_log.debug("Skipping 0 = Firmware for now")
continue
elif curr_recid == 1: #
tmpbuf.write("heatingEnergy = %d\n" % int(factor * curr_value))
elif curr_recid == 2: #
tmpbuf.write("coolingEnergy = %d\n" % int(factor * curr_value))
elif curr_recid == 3: #
tmpbuf.write("energyM3T1 = %d\n" % int(curr_value))
elif curr_recid == 4: #
tmpbuf.write("energyM3T2 = %d\n" % int(curr_value))
elif curr_recid == 5: #
tmpbuf.write(
"volume = %d\n" % int(factor * curr_value * 1000)
) # volume converted from m3 to dm3
elif curr_recid == 6: #
tmpbuf.write("hourCounter = %d\n" % int(curr_value))
elif curr_recid == 7: #
tmpbuf.write("errorHourCounter = %d\n" % int(curr_value))
elif curr_recid == 8: #
tmpbuf.write("temp1 = %f\n" % float(factor * curr_value))
elif curr_recid == 9: #
tmpbuf.write("temp2 = %f\n" % float(factor * curr_value))
elif curr_recid == 10: #
tmpbuf.write("deltaT1T2 = %f\n" % float(factor * curr_value))
elif curr_recid == 11: #
tmpbuf.write("power = %d\n" % int(factor * curr_value))
elif curr_recid == 12: #
tmpbuf.write("powerMax = %d\n" % int(factor * curr_value))
elif curr_recid == 13: #
tmpbuf.write(
"flow = %d\n" % int(factor * curr_value * 1000)
) # flow converted from m3/h to dm3/h
elif curr_recid == 14: #
tmpbuf.write(
"flowMax = %d\n" % int(factor * curr_value * 1000)
) # maxflow converted from m3/h to dm3/h
elif curr_recid == 15: #
tmpbuf.write("errorFlags = '%s'\n" % str(curr_value))
elif curr_recid == 16: #
tmpbuf.write("timePoint = '%s'\n" % str(curr_value))
elif curr_recid == 17: #
tmpbuf.write("targetHeatingEnergy = %d\n" % int(factor * curr_value))
elif curr_recid == 18: #
tmpbuf.write("targetCoolingEnergy = %d\n" % int(factor * curr_value))
elif curr_recid == 19: #
tmpbuf.write("targetEnergyM3T1 = %d\n" % int(curr_value))
elif curr_recid == 20: #
tmpbuf.write("targetEnergyM3T2 = %d\n" % int(curr_value))
elif curr_recid == 21: #
tmpbuf.write(
"targetVolume = %d\n" % int(factor * curr_value * 1000)
) # volume converted from m3 to dm3
elif curr_recid == 22: #
tmpbuf.write("targetPowerMax = %d\n" % int(factor * curr_value))
elif curr_recid == 23: #
tmpbuf.write("targetFlowMax = %d\n" % int(factor * curr_value))
elif curr_recid == 24: #
tmpbuf.write("targetTimepoint = '%s'\n" % str(curr_value))
elif curr_recid == 25: #
_log.debug("Skipping record id 25")
continue
elif curr_recid == 26: #
_log.debug("Skipping record id 26")
continue
elif curr_recid == 27: #
_log.debug("Skipping record id 27")
continue
elif curr_recid == 28: #
_log.debug("Skipping record id 28")
continue
elif curr_recid == 29: #
_log.debug("Skipping record id 29")
continue
else:
continue
tmpbuf.write("WHERE id = '%s' AND recordTimestamp = '%s';\n" % (curr_id, curr_ts))
sqlbuf.write(tmpbuf.getvalue())
_log.debug(sqlbuf.getvalue())
result = []
try:
result = yield DBHelperSQLITE.dbExecute(
_dbHelper, sqlbuf.getvalue(), parseresp=None, script=True, returnrowcount=True
)
except Exception as e:
_log.warning("Error during database operation : %s" % str(e))
pass
_log.info("Aggregation done")
return
from mbus.MBus import MBus
debug = True
address = 1
mbus = MBus(host="mbus-gw1", port=8888)
if debug:
print("mbus = " + str(mbus))
mbus.connect()
if debug:
print("mbus = " + str(mbus))
mbus.send_request_frame(address)
reply = mbus.recv_frame()
if debug:
print("reply =", reply)
reply_data = mbus.frame_data_parse(reply)
if debug:
print("reply_data =", reply_data)
xml_buff = mbus.frame_data_xml(reply_data)
print("xml_buff =", xml_buff)
from mbus.MBus import MBus
debug = True
address = 1
mbus = MBus(host="mbus-gw1", port=8888)
if debug:
print("mbus = " + str(mbus))
mbus.connect()
if debug:
print("mbus = " + str(mbus))
mbus.send_request_frame(address)
reply = mbus.recv_frame()
if debug:
print("reply =", reply)
reply_data = mbus.frame_data_parse(reply)
if debug:
print("reply_data =", reply_data)
xml_buff = mbus.frame_data_xml(reply_data)
print("xml_buff =", xml_buff)
class MBusSerial(object):
def __init__(self, msgbus, port, interval=1, ids=[]):
self._msgbus = msgbus
self._port = port
self._interval = interval
self._get_next_id = itertools.cycle(ids).__next__
self._ioloop = tornado.ioloop.IOLoop.current()
self._executor = ThreadPoolExecutor(max_workers=1)
self._mbus = None
self._ioloop.add_callback(self._read_mbus)
def _read_mbus(self):
self._executor.submit(self._runner).add_done_callback(self._done)
def _reconnect(self):
if self._mbus:
try:
self._mbus.disconnect()
self._mbus = None
except Exception as ex:
log.error("MBus close exception %s", ex)
if not self._mbus:
try:
self._mbus = MBus(device=self._port, libpath='./libmbus.so')
except Exception as ex:
log.error("MBus create exception %s", ex)
return
try:
self._mbus.connect()
except Exception as ex:
log.error("MBus open exception %s", ex)
self._mbus = None
def _runner(self):
id = self._get_next_id()
if not self._mbus:
self._reconnect()
if not self._mbus:
log.error("MBus reconnect failed")
return
try:
self._mbus.select_secondary_address(id)
except Exception as ex:
log.error("MBus select exception %s", ex)
self._reconnect()
return
try:
self._mbus.send_request_frame(MBUS_ADDRESS_NETWORK_LAYER)
except Exception as ex:
log.error("MBus send exception %s", ex)
self._reconnect()
return
try:
reply = self._mbus.recv_frame()
except Exception as ex:
log.error("MBus receive exception %s", ex)
try:
reply_data = self._mbus.frame_data_parse(reply)
xml = self._mbus.frame_data_xml(reply_data)
self._ioloop.add_callback(self._msgbus.publish,
'mbus_data_received', {
'port': self._port,
'id': id,
'xml': xml
})
except Exception as ex:
log.error("MBus parse exception %s", ex)
def _done(self, _):
time.sleep(self._interval)
self._ioloop.add_callback(self._read_mbus)
from mbus.MBus import MBus
#import xmltodict
debug = True
mbus_addresses = [1,15,31] # m-bus primary addresses to request data from
mbus = MBus(device=b'/dev/ttyUSB0') # C-library expects byte strings, Python3 string is unicode -> prefix string with 'b'
#reply_dict = {}
reply_xml = {}
try:
mbus.connect()
for adr in mbus_addresses:
try:
mbus.send_request_frame(adr)
reply_xml[adr] = mbus.frame_data_xml(mbus.frame_data_parse(mbus.recv_frame()))
#reply_dict[adr] = xmltodict.parse(mbus.frame_data_xml(mbus.frame_data_parse(mbus.recv_frame()))) # xmltodict works directly on the byte-string xml from libmbus
except Exception as e:
print ("Exception while requesting data from m-bus : type %s, desc: %s" % (type(e),str(e)))
pass
mbus.disconnect()
except Exception as e:
print ("Exception while requesting data from m-bus : type %s, desc: %s" % (type(e),str(e)))
pass
# if reply_dict:
# for k,resp in enumerate(reply_dict):
# print("i: %s key:%s value:\n%s" % (k,resp,reply_dict[resp]))
if reply_xml:
for k,resp in enumerate(reply_xml):
print("i: %s key:%s value:\n%s" % (k,resp,reply_xml[resp]))