def _read(self, wait_time=None, numretries=None):
"""Reads the device.
Sends the request packet, recieves the response packet.
Parses it. Updates the current reading value
Should be called only by get_value()
"""
if numretries is None:
numretries = self.retry_count
while numretries:
try:
self._send_request(self.request_obj, self.response_obj,
wait_time, 1)
resp_addr = self.response_obj.findChildByName('addr')
resp_cs = self.response_obj.findChildByName('cs')
resp_data = self.response_obj.findChildByName('data')
addr = resp_addr.getValue()
cs = resp_cs.getValue()
data = resp_data.getValue()
checksum = (0x5D + calc_sum(addr) + calc_sum(data)) & 0xFF
if checksum != cs:
#some error in the response packet
if self.debug:
msglog.log("omnimeter", msglog.types.WARN,
"Checksum didn't match %s" % self.address)
raise EBadChecksum()
if self.bin_addr != addr:
#it's not me. don't think this would ever happen, but who knows
if self.debug:
msglog.log(
'omnimeter', msglog.types.WARN,
"Got some other meter's response (Strange!!) %s" %
self.address)
raise EInvalidMessage()
meter_reading = format_reading(data)
self.update_value(meter_reading)
return
except:
numretries -= 1
raise
def _read(self, wait_time=None, numretries=None):
"""Reads the device.
Sends the request packet, recieves the response packet.
Parses it. Updates the current reading value
Should be called only by get_value()
"""
if numretries is None:
numretries = self.retry_count
while numretries:
try:
self._send_request(self.request_obj, self.response_obj, wait_time, 1)
resp_addr = self.response_obj.findChildByName("addr")
resp_cs = self.response_obj.findChildByName("cs")
resp_data = self.response_obj.findChildByName("data")
addr = resp_addr.getValue()
cs = resp_cs.getValue()
data = resp_data.getValue()
checksum = (0x5D + calc_sum(addr) + calc_sum(data)) & 0xFF
if checksum != cs:
# some error in the response packet
if self.debug:
msglog.log("omnimeter", msglog.types.WARN, "Checksum didn't match %s" % self.address)
raise EBadChecksum()
if self.bin_addr != addr:
# it's not me. don't think this would ever happen, but who knows
if self.debug:
msglog.log(
"omnimeter",
msglog.types.WARN,
"Got some other meter's response (Strange!!) %s" % self.address,
)
raise EInvalidMessage()
meter_reading = format_reading(data)
self.update_value(meter_reading)
return
except:
numretries -= 1
raise
def _read(self, wait_time=None, numretries=None):
"""Reads the device
Sends the request packet, recieves the response packet,
Parses it. Updates the current reading value
Shouldn't be called by anyone. Use get_value_by_name instead
"""
if numretries is None:
numretries = self.retry_count
while numretries:
try:
self._send_request(self.request_obj,
self.response_obj, wait_time, 1)
resp_addr = self.response_obj.findChildByName('addr')
resp_data = self.response_obj.findChildByName('data')
resp_cs = self.response_obj.findChildByName('cs')
addr = resp_addr.getValue()
data = resp_data.getValue()
cs = resp_cs.getValue()
#relay variable included because of bug #CSCts88534
relay = 0
resp_relay = self.response_obj.findChildByName('relay')
if resp_relay is not None:
relay = resp_relay.getValue() + 1
checksum = (0xD2 + calc_sum(addr) +
calc_sum(data) + relay) & 0xFF
if self.debug:
msglog.log('omnimeter', msglog.types.INFO,
'checksum calculated %s Received %s'
% (str(checksum),
str(cs)))
if checksum != cs:
msglog.log("omnimeter", msglog.types.WARN,
"Checksum didn't match %s" % self.address)
raise EBadChecksum()
if self.bin_addr != addr:
#it's not me. don't think this would ever happen, but who knows
msglog.log('omnimeter', msglog.types.WARN,
"Got some other meter's response (Strange!!!) %s" %
self.address)
raise EInvalidMessage()
#everything fine till here, get the reading and update self.value
#Get the error status flag
meter_reading = {}
err_status = ord(data[24]) - 0x33
if not (err_status & 0x01):
meter_reading['SP'] = format_reading(data[20:24])
if self.debug:
msglog.log('omnimeter', msglog.types.INFO,
"Got Reading SP:%s" % (meter_reading['SP'],))
else:
meter_reading['SP'] = EConnectionError()
if self.debug:
msglog.log('omnimeter', msglog.types.INFO,
'Did not get reading for SP')
if not (err_status & 0x02):
meter_reading['CM'] = format_reading(data[12:16])
if self.debug:
msglog.log('omnimeter',msglog.types.INFO,
"Got Reading CM:%s" % (meter_reading['CM'],))
else:
meter_reading['CM'] = EConnectionError()
if self.debug:
msglog.log('omnimeter', msglog.types.INFO,
'Did not get reading for CM')
if not (err_status & 0x04):
meter_reading['GM'] = format_reading(data[8:12])
if self.debug:
msglog.log('omnimeter',msglog.types.INFO,
"Got Reading GM:%s" % (meter_reading['GM'],))
else:
meter_reading['GM'] = EConnectionError()
if self.debug:
msglog.log('omnimeter', msglog.types.INFO,
'Did not get reading for GM')
if not (err_status & 0x08):
meter_reading['HM'] = format_reading(data[4:8])
if self.debug:
msglog.log('omnimeter',msglog.types.INFO,
"Got Reading HM:%s" % (meter_reading['HM'],))
else:
meter_reading['HM'] = EConnectionError()
if self.debug:
msglog.log('omnimeter', msglog.types.INFO,
'Did not get reading for HM')
if not (err_status & 0x10):
meter_reading['WM'] = format_reading(data[0:4])
if self.debug:
msglog.log('omnimeter',msglog.types.INFO,
"Got Reading WM:%s" % (meter_reading['WM'],))
else:
meter_reading['WM'] = EConnectionError()
if self.debug:
msglog.log('omnimeter', msglog.types.INFO,
'Did not get reading for WM')
if not (err_status & 0x20):
meter_reading['EM'] = format_reading(data[16:20])
if self.debug:
msglog.log('omnimeter', msglog.types.INFO,
"Got Reading EM:%s"
% (meter_reading['EM'],))
else:
meter_reading['EM'] = EConnectionError()
if self.debug:
msglog.log('omnimeter', msglog.types.INFO,
'Did not get reading for EM')
self.update_value(meter_reading)
return
except:
numretries -= 1
raise
