# -*- coding: utf-8 -*- """Driver for FreeStyle Precision Neo devices. This driver may also work with FreeStyle Optium Neo devices, but it is currently untested. Supported features: - get readings; - get and set date and time; - get serial number and software version. Expected device path: /dev/hidraw9 or similar HID device. Further information on the device protocol can be found at https://flameeyes.github.io/glucometer-protocols/abbott/freestyle-precision-neo """ __author__ = 'Diego Elio Pettenò' __email__ = 'flameeyes@flameeyes.eu' __copyright__ = 'Copyright © 2017, Diego Elio Pettenò' __license__ = 'MIT' import collections import datetime from glucometerutils import common from glucometerutils.support import freestyle # The type is a string because it precedes the parsing of the object. _TYPE_GLUCOSE_READING = '7' _NeoReading = collections.namedtuple('_NeoReading', ( 'type', # 7 = blood glucose 'id', 'month', 'day', 'year', # year is two-digits 'hour', 'minute', 'unknown2', 'value', 'unknown3', 'unknown4', 'unknown5', 'unknown6', 'unknown7', 'unknown8', 'unknown9', 'unknown10', 'unknown11', 'unknown12', )) class Device(freestyle.FreeStyleHidDevice): """Glucometer driver for FreeStyle Precision Neo devices.""" def get_meter_info(self): """Return the device information in structured form.""" return common.MeterInfo( 'FreeStyle Precision Neo', serial_number=self.get_serial_number(), version_info=( 'Software version: ' + self._get_version(),), native_unit=self.get_glucose_unit()) def get_glucose_unit(self): """Returns the glucose unit of the device.""" return common.UNIT_MGDL def get_readings(self): """Iterate through the reading records in the device.""" for record in self._get_multirecord(b'$result?'): if not record or record[0] != _TYPE_GLUCOSE_READING: continue # Build a _reading object by parsing each of the entries in the CSV # as integers. raw_reading = _NeoReading._make([int(v) for v in record]) timestamp = datetime.datetime( raw_reading.year + 2000, raw_reading.month, raw_reading.day, raw_reading.hour, raw_reading.minute) yield common.Reading(timestamp, raw_reading.value)