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| -rw-r--r-- | README | 2 | ||||
| -rw-r--r-- | glucometerutils/drivers/fslibre.py | 73 |
2 files changed, 75 insertions, 0 deletions
@@ -27,6 +27,7 @@ information on each of the devices. | LifeScan | OneTouch Verio (USB) | `otverio2015` | | LifeScan | OneTouch Select Plus | `otverio2015` | | Abbott | FreeStyle InsuLinx | `fsinsulinx` | +| Abbott | FreeStyle Libre | `fslibre` | | Abbott | FreeStyle Optium | `fsoptium` | | Abbott | FreeStyle Precision Neo | `fsprecisionneo` | | Roche | Accu-Chek Mobile | `accuchek_reports` | @@ -40,6 +41,7 @@ information on each of the devices. | `otultraeasy` | serialno, swver, unit | get and set | not supported by device | yes | | `otverio2015` | serialno, swver | get and set | no | yes | | `fsinsulinx` | serialno, swver | get and set | no | not supported by device | +| `fslibre` | serialno, swver | get and set | yes | not supported by device | | `fsoptium` | serialno, swver, unit | get and set | not supported by device | not supported by device | | `fsprecisionneo` | serialno, swver | get and set | not supported by device | not supported by device | | `accuchek_reports` | serialno, unit | no | yes | not supported by device | diff --git a/glucometerutils/drivers/fslibre.py b/glucometerutils/drivers/fslibre.py new file mode 100644 index 0000000..c213ccd --- /dev/null +++ b/glucometerutils/drivers/fslibre.py @@ -0,0 +1,73 @@ +# -*- coding: utf-8 -*- +"""Driver for FreeStyle Libre CGM devices.""" + +__author__ = 'Diego Elio Pettenò' +__email__ = 'flameeyes@flameeyes.eu' +__copyright__ = 'Copyright © 2017, Diego Elio Pettenò' +__license__ = 'MIT' + +import datetime + +from glucometerutils import common +from glucometerutils.support import freestyle + +# Fields of the records returned by $history? +# Tuple of pairs of idx and field name +_HISTORY_ENTRY_MAP = ( + (2, 'month'), + (3, 'day'), + (4, 'year'), # 2-digits + (5, 'hour'), + (6, 'minute'), + (7, 'second'), + (13, 'value'), + (15, 'errors'), +) + + +class Device(freestyle.FreeStyleHidDevice): + """Glucometer driver for FreeStyle Libre devices.""" + + def get_meter_info(self): + """Return the device information in structured form.""" + return common.MeterInfo( + 'FreeStyle Libre', + serial_number=self.get_serial_number(), + version_info=( + 'Software version: ' + self._get_version(),), + native_unit=self.get_glucose_unit()) + + def get_serial_number(self): + """Overridden function as the command is not compatible.""" + return self._send_text_command(b'$sn?').rstrip('\r\n') + + def get_glucose_unit(self): + """Returns the glucose unit of the device.""" + # TODO(Flameeyes): figure out how to identify the actual unit on the + # device. + return common.UNIT_MGDL + + def get_readings(self): + for record in self._get_multirecord(b'$history?'): + if not record: + continue + + parsed_record = { + key: int(record[idx]) + for idx, key in _HISTORY_ENTRY_MAP + } + + if parsed_record['errors'] != 0: + # The reading is considered invalid, so ignore it. + continue + + timestamp = datetime.datetime( + parsed_record['year'] + 2000, + parsed_record['month'], + parsed_record['day'], + parsed_record['hour'], + parsed_record['minute'], + parsed_record['second']) + + yield common.Reading(timestamp, parsed_record['value'], + comment='(Sensor)') |