> On Apr 10, 2018, at 9:44 AM, Linus Torvalds <torva...@linux-foundation.org> > wrote: > > On Tue, Apr 10, 2018 at 9:26 AM, Dirk Hohndel <d...@hohndel.org> wrote: >> >> What's our best bet to create a process to do this? >> Ask people to send their dive computers to Linus? Tempting, but maybe >> not as scalable as one might hope. > > Yeah. Especially since I wouldn't be very motivated by most dive > computers. I've not been all that excited about the Mares ones I've > seen: the Icon HD is ok, but I had issues with the screen.
This was intended as a joke... >> Instructions how to create a BLE trace (I guess on Android?)? > > Yeah, but we know how easy _that_ can be, particularly since Android 8 > (or something) apparently broke the documented ways by hiding the > trace. So you can get a trace, but _accessing_ that trace is > apparently impossible now. > > (Or maybe google fixed it? I haven't tried). > > But yes, at a minimum we'd need a BLE trace of a successful download, > and the BLE GATT descriptor listing (getting *that* is a pain too, the > best approach seems to be "use Nordic's nRF connect, and then expand > all the descriptors, and take screen shots", which isn't very > user-friendly either. > > So both of those are somewhat painful for your average user that > doesn't really know anything about BLE. > > We were very lucky with Berthold and the Aladin Sport. He did his own > fake GATT server and tricked the LogTrak mobile app to talk to his > desktop and got some traces that way. With *that* kind of expertise > on the user side, supporting the result was pretty easy. He did all of > the heavy lifting himself. The question is, can any of this be well documented or even automated? Berthold, any suggestions? I remember the Android process being reasonably painful - even without Google hiding the output file from you. Some googling seems to come up with quite a few posts on how to do this: https://learn.adafruit.com/reverse-engineering-a-bluetooth-low-energy-light-bulb/sniff-protocol It seems that using this device really helps https://www.nordicsemi.com/eng/Products/Bluetooth-low-energy/nRF-Sniffer https://www.semiconductorstore.com/cart/pc/viewPrd.asp?idproduct=50443 But that's $45 or so - not something that we can ask the casual diver to buy... Hmmm... running out of easy ideas /D _______________________________________________ subsurface mailing list subsurface@subsurface-divelog.org http://lists.subsurface-divelog.org/cgi-bin/mailman/listinfo/subsurface
