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readdata.py
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readdata.py
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#########################################################################
# This source file is from the openaps/dexcom_reader project.
#
# https://github.com/openaps/dexcom_reader
#
# It is under an MIT licence described in the 3 paragraphs below:
#
#########################################################################
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the "Software"),
# to deal in the Software without restriction, including without limitation
# the rights to use, copy, modify, merge, publish, distribute, sublicense,
# and/or sell copies of the Software, and to permit persons to whom the
# Software is furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
# OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
# ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
# OTHER DEALINGS IN THE SOFTWARE.
#
#########################################################################
#
# Modifications by Steve Erlenborn:
# - Added many try ... except blocks to handle exceptions.
# - Added GetDeviceType() method to identify the generation of the
# Dexcom device. Returns 'g4', 'g5', 'g6', or the firmware version
# number.
# - Added a retry in Connect(). If the retry also fails, and the
# OS is unix based, suggest steps to fix permission problems.
# - Added ReadAllManufacturingData()
# - Added USER_SETTING_DATA for G5 & G6.
# - Added import of print_function
#
#########################################################################
# Support python3 print syntax in python2
from __future__ import print_function
import crc16
import constants
import database_records
import datetime
import serial
import sys
import time
import packetwriter
import struct
import re
import util
import xml.etree.ElementTree as ET
import platform
from traceback import print_exc
# Some services are only to be invoked on unix-based OSs
if sys.platform == "linux" or sys.platform == "linux2" or sys.platform == "darwin":
import grp
import pwd
import os
class ReadPacket(object):
def __init__(self, command, data):
self._command = command
self._data = data
@property
def command(self):
return self._command
@property
def data(self):
return self._data
class Dexcom(object):
@staticmethod
def FindDevice():
try:
return util.find_usbserial(constants.DEXCOM_USB_VENDOR,
constants.DEXCOM_USB_PRODUCT)
except NotImplementedError:
#print ('FindDevice() : Exception =', e)
if sys.version_info < (3, 0):
sys.exc_clear()
return None
def GetDeviceType(self):
try:
device = self.FindDevice()
if not device:
sys.stderr.write('Could not find Dexcom Receiver!\n')
return None
else:
#print ('GetFirmwareHeader =', self.GetFirmwareHeader())
fw_ver = self.GetFirmwareHeader().get('FirmwareVersion')
if fw_ver.startswith("2."): # G4 firmware versions
return 'g4'
elif fw_ver.startswith("3."):
return 'g4'
elif fw_ver.startswith("4."):
return 'g4'
elif fw_ver.startswith("5.0."): # 5.0.1.043 = G5 Receiver Firmware
return 'g5'
elif fw_ver.startswith("5."): # 5.1.1.022 = G6 Receiver Firmware
return 'g6'
else: # unrecognized firmware version
return fw_ver
except Exception as e:
print ('GetDeviceType() : Exception =', e)
print_exc()
if sys.version_info < (3, 0):
sys.exc_clear()
return None
@classmethod
def LocateAndDownload(cls):
device = cls.FindDevice()
if not device:
sys.stderr.write('Could not find Dexcom G4|G5|G6 Receiver!\n')
sys.exit(1)
else:
dex = cls(device)
# Uncomment two lines below to show the size of each record type
#for item in dex.DataPartitions():
#print (item.attrib)
print ('Firmware.ProductId =', dex.GetFirmwareHeader().get('ProductId'))
print ('Found %s S/N: %s'
% (dex.GetFirmwareHeader().get('ProductName'),
dex.ReadManufacturingData().get('SerialNumber')))
print ('Transmitter paired: %s' % dex.ReadTransmitterId())
print ('Battery Status: %s (%d%%)' % (dex.ReadBatteryState(),
dex.ReadBatteryLevel()))
print ('Record count:')
print ('- Meter records: %d' % (len(dex.ReadRecords('METER_DATA'))))
print ('- CGM records: %d' % (len(dex.ReadRecords('EGV_DATA'))))
print ('- CGM commitable records: %d'
% (len([not x.display_only for x in dex.ReadRecords('EGV_DATA')])))
print ('- Event records: %d' % (len(dex.ReadRecords('USER_EVENT_DATA'))))
print ('- Insertion records: %d' % (len(dex.ReadRecords('INSERTION_TIME'))))
print ('- Calibration records: %d' % (len(dex.ReadRecords('CAL_SET'))))
# Uncomment out any record types you want to display
#print ('\nEGV_DATA\n======================================================')
#print (' +--------------+---------------+-------+---------------+----+----------+---+---+---+--------+------+')
#print (' | systemTime | displayTime | Gluc | meterTime | ? | testNum |Rat|Arw| ? | RealGlu| crc |')
#print (' +--------------+---------------+-------+---------------+----+----------+---+---+---+--------+------+')
#maxrec = 100
#for egv_rec in dex.ReadRecords('EGV_DATA'):
#print ('raw_data =', ' '.join(' %02x' % ord(c) for c in egv_rec.raw_data))
#maxrec -= 1
#if maxrec <= 0:
#break
#print ('\nUSER_EVENT_DATA\n======================================================')
#print (' +--------------+---------------+----+---+--------------+---------------+--------+')
#print (' | systemTime | displayTime |Type|Sub| eventTime | Value | crc |')
#print (' +--------------+---------------+----+---+--------------+---------------+--------+')
#maxrec = 100
#for evt_rec in dex.ReadRecords('USER_EVENT_DATA'):
#print ('raw_data =', ' '.join(' %02x' % ord(c) for c in evt_rec.raw_data))
#maxrec -= 1
#if maxrec <= 0:
#break
#print ('SENSOR_DATA\n======================================================')
#print (' +--------------+---------------+-------------+-------------+-----------+--------+')
#print (' | systemTime | displayTime | Unfiltered | Filtered | Rssi | crc |')
#print (' +--------------+---------------+-------------+-------------+-----------+--------+')
#for sen_rec in dex.ReadRecords('SENSOR_DATA'):
#print ('raw_data =', ' '.join(' %02x' % ord(c) for c in sen_rec.raw_data))
#print ('\nINSERTION_TIME\n======================================================')
#print (' +--------------+---------------+---------------+----+--------------+-----------------------+--------+')
#print (' | systemTime | displayTime | insertionTime |Stat| unknown |Transmitter Serial Num | crc |')
#print (' +--------------+---------------+---------------+----+--------------+-----------------------+--------+')
#for ins_rec in dex.ReadRecords('INSERTION_TIME'):
#print ('raw_data =', ' '.join(' %02x' % ord(c) for c in ins_rec.raw_data))
#print ('\nMETER_DATA\n======================================================')
#print (' +--------------+---------------+-------+----+---------------+----------+---+--------+')
#print (' | systemTime | displayTime | Gluc |Type| meterTime | testNum |xx | crc |')
#print (' +--------------+---------------+-------+----+---------------+----------+---+--------+')
#for met_rec in dex.ReadRecords('METER_DATA'):
#print ('raw_data =', ' '.join(' %02x' % ord(c) for c in met_rec.raw_data))
#print (' record_type =', met_rec.record_type, ', calib_gluc =', met_rec.calib_gluc, ', testNum =', met_rec.testNum, ' xx =', met_rec.xx)
#print ('\nMANUFACTURING_DATA\n======================================================')
#mfg_data = dex.ReadAllManufacturingData()
#print ('char data =', mfg_data)
# Not sure if the G4 has USER_SETTING_DATA, so we'll retrieve the
# device type and restrict the following code to G5 or G6 cases.
myDevType = dex.GetDeviceType()
if myDevType is not None:
if (myDevType == 'g5') or (myDevType == 'g6') :
print ('- User Setting Records: %d' % (len(dex.ReadRecords('USER_SETTING_DATA'))))
#################################################################################
# Every time you modify any user configuration parameter, a new USER_SETTING_DATA
# record gets generated, so there can be a large number of these.
#################################################################################
#print ('USER_SETTING_DATA\n======================================================')
#for sen_rec in dex.ReadRecords('USER_SETTING_DATA'):
#print ('raw_data =', ' '.join(' %02x' % ord(c) for c in sen_rec.raw_data))
#print ('transmitterPaired =', sen_rec.transmitterPaired)
#print ('highAlert =', sen_rec.highAlert)
#print ('highRepeat =', sen_rec.highRepeat)
#print ('lowAlert =', sen_rec.lowAlert)
#print ('lowRepeat =', sen_rec.lowRepeat)
#print ('riseRate =', sen_rec.riseRate)
#print ('fallRate =', sen_rec.fallRate)
#print ('outOfRangeAlert =', sen_rec.outOfRangeAlert)
#print ('soundsType =', sen_rec.soundsType)
#if myDevType == 'g6' :
#print ('urgentLowSoonRepeat =', sen_rec.urgentLowSoonRepeat)
#print ('sensorCode =', sen_rec.sensorCode)
#print ('')
def __init__(self, port_path, port=None):
self._port_name = port_path
self._port = port
def Connect(self):
try:
if self._port is None:
self._port = serial.Serial(port=self._port_name, baudrate=115200, timeout=4.3)
except serial.SerialException as e:
if sys.version_info < (3, 0):
sys.exc_clear()
try:
if self._port is None:
#print ('First attempt failed')
if sys.platform == "linux" or sys.platform == "linux2" or sys.platform == "darwin":
# Trying to access the port file may help make it visible.
# For example, on Linux, running 'ls <self._port_name>' helps make
# a subsequent serial port access work.
try:
stat_info = os.stat(self._port_name)
except OSError as e:
#print ('Connect() - os.stat() : Exception =', e)
if sys.version_info < (3, 0):
sys.exc_clear()
pass
time.sleep(15)
self._port = serial.Serial(port=self._port_name, baudrate=115200, timeout=4.3)
except serial.SerialException as e:
if sys.version_info < (3, 0):
sys.exc_clear()
print ('Read/Write permissions missing for', self._port_name)
if sys.platform == "linux" or sys.platform == "linux2" or sys.platform == "darwin":
stat_info = os.stat(self._port_name)
port_gid = stat_info.st_gid
port_group = grp.getgrgid(port_gid)[0]
username = pwd.getpwuid(os.getuid())[0]
print ('\nFor a persistent solution (recommended), run ...')
if sys.platform == "darwin":
print ('\n sudo dseditgroup -o edit -a', username, '-t user', port_group)
else:
# On Mint, Ubuntu, etc.
print ('\n sudo addgroup', username, port_group)
print ('\n sudo -', username)
print ('\n OR')
# On Fedora, Red Hat, etc.
print ('\n sudo usermod -a -G', port_group, username)
print ('\n su -', username)
print ('\nFor a short term solution, run ...')
print ('\n sudo chmod 666', self._port_name,'\n')
if self._port is not None:
try:
self.clear()
#print ('Connect() : self.clear()')
except Exception as e:
#print ('Connect() - self.clear() : Exception =', e)
if sys.version_info < (3, 0):
sys.exc_clear()
pass
try:
self.flush()
#print ('Connect() : self.flush()')
except Exception as e:
#print ('Connect() - self.flush() : Exception =', e)
if sys.version_info < (3, 0):
sys.exc_clear()
pass
def Disconnect(self):
if self._port is not None:
# If the user disconnects the USB cable while in the middle
# of a Write/Read operation, we can end up with junk in the
# serial port buffers. After reconnecting the cable, this
# junk can cause a lock-up on that port. So, clear and
# flush the port during this Disconnect operation to prevent
# a possible future lock-up. Note: the clear() and flush()
# operations can throw exceptions when there is nothing to
# be cleaned up, so we use try ... except to ignore those.
try:
self.clear()
except Exception as e:
#print ('Disconnect() : self.clear Exception =', e)
if sys.version_info < (3, 0):
sys.exc_clear()
pass
try:
self.flush()
except Exception as e:
#print ('Disconnect() : self.flush Exception =', e)
if sys.version_info < (3, 0):
sys.exc_clear()
pass
self._port.close()
self._port = None
@property
def port(self):
if self._port is None:
self.Connect()
return self._port
def write(self, *args, **kwargs):
return self.port.write(*args, **kwargs)
def read(self, *args, **kwargs):
return self.port.read(*args, **kwargs)
def readpacket(self, timeout=None):
total_read = 4
try:
initial_read = self.read(total_read)
except serial.SerialException as e:
#print ('readpacket() : Exception =', e)
if sys.version_info < (3, 0):
sys.exc_clear()
return None
if initial_read != []:
all_data = initial_read
if ord(initial_read[0]) == 1:
command = initial_read[3]
data_number = struct.unpack('<H', initial_read[1:3])[0]
if data_number > 6:
toread = abs(data_number-6)
second_read = self.read(toread)
all_data += second_read
total_read += toread
out = second_read
else:
out = ''
suffix = self.read(2)
if len(suffix) < 2:
raise constants.Error('Packet header too short!')
sent_crc = struct.unpack('<H', suffix)[0]
local_crc = crc16.crc16(all_data, 0, total_read)
if sent_crc != local_crc:
raise constants.CrcError("readpacket Failed CRC check")
num1 = total_read + 2
return ReadPacket(command, out)
else:
raise constants.Error('Error reading packet header!')
def Ping(self):
self.WriteCommand(constants.PING)
try:
packet = self.readpacket()
except Exception as e:
#print ('Ping() Exception =', e)
#print_exc()
if sys.version_info < (3, 0):
sys.exc_clear()
return None
return ord(packet.command) == constants.ACK
def WritePacket(self, packet):
if not packet:
raise constants.Error('Need a packet to send')
packetlen = len(packet)
if packetlen < 6 or packetlen > 1590:
raise constants.Error('Invalid packet length')
self.flush()
self.write(packet)
def WriteCommand(self, command_id, *args, **kwargs):
p = packetwriter.PacketWriter()
p.ComposePacket(command_id, *args, **kwargs)
self.WritePacket(p.PacketString())
def GenericReadCommand(self, command_id):
try:
self.WriteCommand(command_id)
return self.readpacket()
except (serial.SerialTimeoutException, serial.SerialException) as e:
#print ('GenericReadCommand() : SerialException =', e)
if sys.version_info < (3, 0):
sys.exc_clear()
return None
except Exception as e:
#print ('GenericReadCommand() Exception =', e)
#print_exc()
if sys.version_info < (3, 0):
sys.exc_clear()
return None
def ReadTransmitterId(self):
result = self.GenericReadCommand(constants.READ_TRANSMITTER_ID)
if result is None:
return None
return result.data
def ReadLanguage(self):
result = self.GenericReadCommand(constants.READ_LANGUAGE)
if result is None:
return None
lang = result.data
return constants.LANGUAGES[struct.unpack('H', lang)[0]]
def ReadBatteryLevel(self):
result = self.GenericReadCommand(constants.READ_BATTERY_LEVEL)
if result is None:
return None
level = result.data
return struct.unpack('I', level)[0]
def ReadBatteryState(self):
result = self.GenericReadCommand(constants.READ_BATTERY_STATE)
if result is None:
return None
state = result.data
return constants.BATTERY_STATES[ord(state)]
def ReadRTC(self):
result = self.GenericReadCommand(constants.READ_RTC)
if result is None:
return None
rtc = result.data
return util.ReceiverTimeToTime(struct.unpack('I', rtc)[0])
def ReadSystemTime(self):
result = self.GenericReadCommand(constants.READ_SYSTEM_TIME)
if result is None:
return None
rtc = result.data
return util.ReceiverTimeToTime(struct.unpack('I', rtc)[0])
def ReadSystemTimeOffset(self):
result = self.GenericReadCommand(constants.READ_SYSTEM_TIME_OFFSET)
if result is None:
return None
raw = result.data
return datetime.timedelta(seconds=struct.unpack('i', raw)[0])
def ReadDisplayTimeOffset(self):
result = self.GenericReadCommand(constants.READ_DISPLAY_TIME_OFFSET)
if result is None:
return None
raw = result.data
return datetime.timedelta(seconds=struct.unpack('i', raw)[0])
def WriteDisplayTimeOffset(self, offset=None):
payload = struct.pack('i', offset)
self.WriteCommand(constants.WRITE_DISPLAY_TIME_OFFSET, payload)
try:
packet = self.readpacket()
except Exception as e:
#print ('WriteDisplayTimeOffset() Exception =', e)
#print_exc()
if sys.version_info < (3, 0):
sys.exc_clear()
return None
return dict(ACK=ord(packet.command) == constants.ACK)
def ReadDisplayTime(self):
return self.ReadSystemTime() + self.ReadDisplayTimeOffset()
def ReadGlucoseUnit(self):
UNIT_TYPE = (None, 'mg/dL', 'mmol/L')
result = self.GenericReadCommand(constants.READ_GLUCOSE_UNIT)
if result is None:
return None
gu = result.data
return UNIT_TYPE[ord(gu[0])]
def ReadClockMode(self):
CLOCK_MODE = (24, 12)
result = self.GenericReadCommand(constants.READ_CLOCK_MODE)
if result is None:
return None
cm = result.data
return CLOCK_MODE[ord(cm[0])]
def ReadDeviceMode(self):
# ???
result = self.GenericReadCommand(constants.READ_DEVICE_MODE)
if result is None:
return None
return result.data
def ReadBlindedMode(self):
MODES = { 0: False }
result = self.GenericReadCommand(constants.READ_BLINDED_MODE)
if result is None:
return None
raw = result.data
mode = MODES.get(bytearray(raw)[0], True)
return mode
def ReadHardwareBoardId(self):
result = self.GenericReadCommand(constants.READ_HARDWARE_BOARD_ID)
if result is None:
return None
return result.data
def ReadEnableSetupWizardFlag (self):
result = self.GenericReadCommand(constants.READ_ENABLE_SETUP_WIZARD_FLAG)
if result is None:
return None
return result.data
def ReadSetupWizardState (self):
result = self.GenericReadCommand(constants.READ_SETUP_WIZARD_STATE)
if result is None:
return None
return result.data
def WriteChargerCurrentSetting (self, status):
MAP = ( 'Off', 'Power100mA', 'Power500mA', 'PowerMax', 'PowerSuspended' )
payload = str(bytearray([MAP.index(status)]))
self.WriteCommand(constants.WRITE_CHARGER_CURRENT_SETTING, payload)
try:
packet = self.readpacket()
except Exception as e:
#print ('WriteChargerCurrentSetting() Exception =', e)
#print_exc()
if sys.version_info < (3, 0):
sys.exc_clear()
return None
if packet is None:
return None
raw = bytearray(packet.data)
return dict(ACK=ord(packet.command) == constants.ACK, raw=list(raw))
def ReadChargerCurrentSetting (self):
MAP = ( 'Off', 'Power100mA', 'Power500mA', 'PowerMax', 'PowerSuspended' )
result = self.GenericReadCommand(constants.READ_CHARGER_CURRENT_SETTING)
if result is None:
return None
raw = bytearray(result.data)
return MAP[raw[0]]
# ManufacturingParameters: SerialNumber, HardwarePartNumber, HardwareRevision, DateTimeCreated, HardwareId
def ReadManufacturingData(self):
data = self.ReadRecords('MANUFACTURING_DATA')[0].xmldata
return ET.fromstring(data)
def ReadAllManufacturingData(self):
data = self.ReadRecords('MANUFACTURING_DATA')[0].xmldata
return data
def flush(self):
self.port.flush()
def clear(self):
self.port.flushInput()
self.port.flushOutput()
def GetFirmwareHeader(self):
i = self.GenericReadCommand(constants.READ_FIRMWARE_HEADER)
if i is None:
return None
return ET.fromstring(i.data)
# FirmwareSettingsParameters: FirmwareImageId
def GetFirmwareSettings(self):
i = self.GenericReadCommand(constants.READ_FIRMWARE_SETTINGS)
if i is None:
return None
return ET.fromstring(i.data)
def DataPartitions(self):
i = self.GenericReadCommand(constants.READ_DATABASE_PARTITION_INFO)
if i is None:
return None
return ET.fromstring(i.data)
def ReadDatabasePageRange(self, record_type):
record_type_index = constants.RECORD_TYPES.index(record_type)
try:
self.WriteCommand(constants.READ_DATABASE_PAGE_RANGE,
chr(record_type_index))
packet = self.readpacket()
except Exception as e:
#print ('ReadDatabasePageRange() Exception =', e)
if sys.version_info < (3, 0):
sys.exc_clear()
return []
if packet is None:
return []
return struct.unpack('II', packet.data)
def ReadDatabasePage(self, record_type, page):
record_type_index = constants.RECORD_TYPES.index(record_type)
try:
self.WriteCommand(constants.READ_DATABASE_PAGES,
(chr(record_type_index), struct.pack('I', page), chr(1)))
packet = self.readpacket()
except Exception as e:
#print ('ReadDatabasePage() Exception =', e)
if sys.version_info < (3, 0):
sys.exc_clear()
return []
if packet is None:
return []
assert ord(packet.command) == 1
# first index (uint), numrec (uint), record_type (byte), revision (byte),
# page# (uint), r1 (uint), r2 (uint), r3 (uint), ushort (Crc)
header_format = '<2IcB4IH'
header_data_len = struct.calcsize(header_format)
header = struct.unpack_from(header_format, packet.data)
header_crc = crc16.crc16(packet.data[:header_data_len-2])
assert header_crc == header[-1]
assert ord(header[2]) == record_type_index
assert header[4] == page
packet_data = packet.data[header_data_len:]
return self.ParsePage(header, packet_data)
def GenericRecordYielder(self, header, data, record_type):
for x in xrange(header[1]):
yield record_type.Create(data, x)
PARSER_MAP = {
'USER_EVENT_DATA': database_records.EventRecord,
'METER_DATA': database_records.MeterRecord,
'CAL_SET': database_records.Calibration,
'INSERTION_TIME': database_records.InsertionRecord,
'EGV_DATA': database_records.EGVRecord,
'SENSOR_DATA': database_records.SensorRecord,
}
def ParsePage(self, header, data):
record_type = constants.RECORD_TYPES[ord(header[2])]
revision = int(header[3])
generic_parser_map = self.PARSER_MAP
if revision > 4 and record_type == 'EGV_DATA':
generic_parser_map.update(EGV_DATA=database_records.G6EGVRecord)
if revision > 1 and record_type == 'INSERTION_TIME':
generic_parser_map.update(INSERTION_TIME=database_records.G5InsertionRecord)
if revision > 2 and record_type == 'METER_DATA':
generic_parser_map.update(METER_DATA=database_records.G5MeterRecord)
if revision < 2 and record_type == 'CAL_SET':
generic_parser_map.update(CAL_SET=database_records.LegacyCalibration)
xml_parsed = ['PC_SOFTWARE_PARAMETER', 'MANUFACTURING_DATA']
if record_type in generic_parser_map:
return self.GenericRecordYielder(header, data,
generic_parser_map[record_type])
elif record_type in xml_parsed:
return [database_records.GenericXMLRecord.Create(data, 0)]
else:
raise NotImplementedError('Parsing of %s has not yet been implemented'
% record_type)
def iter_records (self, record_type):
assert record_type in constants.RECORD_TYPES
page_range = self.ReadDatabasePageRange(record_type)
start, end = page_range
if start != end or not end:
end += 1
for x in reversed(xrange(start, end)):
page_range = self.ReadDatabasePage(record_type, x)
if page_range == []:
break
records = list(page_range)
records.reverse( )
for record in records:
yield record
def ReadRecords(self, record_type):
records = []
assert record_type in constants.RECORD_TYPES
try:
page_range = self.ReadDatabasePageRange(record_type)
if page_range != []:
start, end = page_range
if start != end or not end:
end += 1
for x in range(start, end):
page_range = self.ReadDatabasePage(record_type, x)
if page_range == []:
break
records.extend(page_range)
return records
except serial.SerialException as e:
#print ('ReadRecords() : SerialException =', e)
#print_exc()
if sys.version_info < (3, 0):
sys.exc_clear()
self.Disconnect()
self.Connect()
return records
except ValueError as e:
#print ('ReadRecords() : ValueError Exception =', e)
#print_exc()
if sys.version_info < (3, 0):
sys.exc_clear()
return records
except Exception as e:
#print ('ReadRecords() : Exception =', e)
#print_exc()
if sys.version_info < (3, 0):
sys.exc_clear()
return records
class DexcomG5 (Dexcom):
PARSER_MAP = {
'USER_EVENT_DATA': database_records.EventRecord,
'METER_DATA': database_records.G5MeterRecord,
'CAL_SET': database_records.Calibration,
'INSERTION_TIME': database_records.G5InsertionRecord,
'EGV_DATA': database_records.G5EGVRecord,
'SENSOR_DATA': database_records.SensorRecord,
'USER_SETTING_DATA': database_records.G5UserSettings,
}
class DexcomG6 (Dexcom):
PARSER_MAP = {
'USER_EVENT_DATA': database_records.EventRecord,
'METER_DATA': database_records.G5MeterRecord,
'CAL_SET': database_records.Calibration,
'INSERTION_TIME': database_records.G5InsertionRecord,
'EGV_DATA': database_records.G6EGVRecord,
'SENSOR_DATA': database_records.SensorRecord,
'USER_SETTING_DATA': database_records.G6UserSettings,
}
def GetDevice (port):
workInst = Dexcom(port)
devType = workInst.GetDeviceType() # g4 | g5 | g6
if devType is None:
return None
if devType == 'g6':
#print ('GetDevice() creating DexcomG6 class')
return DexcomG6(port)
elif devType == 'g5':
#print ('GetDevice() creating DexcomG5 class')
return DexcomG5(port)
elif devType == 'g4':
#print ('GetDevice() creating DexcomG4 class')
return workInst
else:
print ('readdata.GetDevice() : Unrecognized firmware version', devType)
return None
if __name__ == '__main__':
dport = Dexcom.FindDevice()
myDevice = GetDevice(dport)
if myDevice:
myDevice.LocateAndDownload()