decoding-contour-next-link

Space to collaborate on decoding Contour Next Link 2.4 comms protocols, and the piggy-backed pump comms

Getting Started

• Make sure you have the following dependencies installed:

  • python
  • pip
  • python-dev
  • libusb-1.0-0-dev
  • libudev-dev
  • liblzo2-dev

• Clone this project

• If you're running macOS (El Capitan or later), you'll need to update setuptools like this first (due to System Integrity Protection):

$ sudo -H pip install --upgrade setuptools --user python

• Install the dependencies:

$ sudo -H pip install cython
$ sudo -H pip install hidapi
$ sudo -H pip install requests astm PyCrypto crc16 python-dateutil
$ sudo -H pip install python-lzo

• Plug in your Contour NextLink 2.4 USB stick

Now you can try the script by calling the module from the parent directory

$ python -m decoding-contour-next-link.read_minimed_next24
Active Insulin: 0.000U
Sensor BGL: 0 mg/dL (0.0 mmol/L) at Thu Jan  1 01:00:00 1970
BGL trend: 3 arrows down
Current basal rate: 0.600U
Temp basal rate: 0.000U
Temp basal percentage: 0%
Units remaining: 164.000U
Battery remaining: 50%
Getting Pump history info
 Pump Start: 2017-10-24 23:59:59.999972+02:00
 Pump End: 2017-10-26 22:13:21.999983+02:00
 Pump Size: 6144
Getting Pump history
# All Pump events:
(' Pump: ', BolusWizardEstimateEvent 3d 2017-10-24 19:58:44.999969+02:00 BG Input:0, Carbs:3.0, Carb ratio: 0.5, Food est.:1.5, Correction est.:0.0, Wizard est.: 1.5, User modif.: False, Final est.: 1.5, )

[...]

# End Pump events
Getting sensor history info
 Sensor Start: 2017-10-24 23:59:59.999975+02:00
 Sensor End: 2017-10-26 22:13:22.999987+02:00
 Sensor Size: 2048
Getting Sensor history
# All Sensor events:
(' Sensor', NGPHistoryEvent 8 2008-12-31 23:00:10.999966+01:00)
(' Sensor', NGPHistoryEvent 7 2017-08-03 17:19:22.999980+02:00)

[...]

# End Sensor events

Known Issues

• Assumed pump time was in UTC, but this doesn't ring true for non DST times (in Melbourne, anyway)