Xdrip: Libre 2 NFC scan

[adenis76]

Hi,

Currently xdrip can't scan libre 2 with Nfc and also not retrieve history from patched librelink app. Please add Nfc scan for libre 2 and possibility to retrieve missed reading.

Thank you.

[MasterPlexus]

@adenis76, unfortunately there is at the moment no way to add this functionality to xdrip. In Libre 2 everything is encrypted, and the keys are not known. If nobody can get the keys, a direct scan will not work.

[nsghub]

There is a new Blucon Nightrider for the Libre 2. So somebody already found the keys. Maybe someone could talk to the guys from Ambrosia.

[chaosbiber]

Ambrosia wasn't the first. There was a group that found a first solution around April(?) this year and offered Ambrosia, MiaoMiao and alike the libraries if they make a donation to the Nightscout foundation. Don't know if any company uses that lib or if they did something on their own. But the problem is: those readings aren't as accurate as the data that comes from the patched libre app. They'll differ quite a bit and are much more noisy. So the question is: is it worth the effort of implementing that function in xDrip until the protocols of libre2 are fully reverse engineered?

[adenis76]

My real "problem" here is gap on xdrip and nightscout graph when phone lose connection with sensor. With blucon and libre 1 sensor xdrip retrieve missed libre history. Can we add possibility to xdrip to retrieve missed readings from patched librelink app?

[mysticprog]

So, Libre 2 over Bluecon is not supported ? Is MiaoMiao 2 supported i xdrip ?
Thanks.

[tzachi-dar]

We are working on this.

[mysticprog]

Ok. Thanks

[dideldum]

The patched LibreLink sends also an Intent "com.librelink.app.ThirdPartyIntegration.SENSOR_SCAN" with all the scanned values (historic and realtime). I tried it in a small test app and all the scanned values seem to be there.
It's just xDrip+, which doesn't take this intent and fills the gap with the scanned values.
Couldn't xDrip+ implement the reception of this patched LibreLink intent?

[mysticprog]

The patched LibreLink sends also an Intent "com.librelink.app.ThirdPartyIntegration.SENSOR_SCAN" with all the scanned values (historic and realtime). I tried it in a small test app and all the scanned values seem to be there.
It's just xDrip+, which doesn't take this intent and fills the gap with the scanned values.
Couldn't xDrip+ implement the reception of this patched LibreLink intent?

I'm just interested. Why do you need it? Well you have readings in XDrip every 5 minutes so I don't see the point in the suggestion.

[dideldum]

I'm just interested. Why do you need it? Well you have readings in XDrip every 5 minutes so I don't see the point in the suggestion.

We even get readings from LibreLink in xDrip+ every minute (not just every 5), so this is great. But if you leave the device with the patched LibreLink/xDrip+ somewhere and miss values, you cannot fill the gap currently in xDrip+.

With transmitters like MiaoMiao this is done, the gap is filled. With the patched LibreLink this is also possible, xDrip+ just must receive the intent and handle the scanned data.

It's just the matter of filling gaps!