With Jef’s changes to libdivecomputer I was able to download over USB just 
fine.  The bluetooth seems a little iffy - I was able to download after forcing 
it into LE mode.  It looks like the bluetooth device name starts with ‘HUD’:

diff --git a/core/btdiscovery.cpp b/core/btdiscovery.cpp
index 7e75994da..c057abd8b 100644
--- a/core/btdiscovery.cpp
+++ b/core/btdiscovery.cpp
@@ -56,9 +56,10 @@ static dc_descriptor_t *getDeviceType(QString btName)
                product = "EON Core";
        }
 
-       if (btName.startsWith("G2")  || btName.startsWith("Aladin")) {
+       if (btName.startsWith("G2")  || btName.startsWith("Aladin") || 
btName.startsWith("HUD")) {
                vendor = "Scubapro";
                if (btName.startsWith("G2")) product = "G2";
+               if (btName.startsWith("HUD")) product = "G2 HUD";
                if (btName.startsWith("Aladin")) product = "Aladin Sport 
Matrix";
        }
 


-bill

> On Apr 25, 2019, at 8:49 AM, William Perry <wmpe...@kadath.us> wrote:
> 
> I have a build of subsurface with your changes in it and will be spending the 
> day at the quarry.  Will see if I can snag the HUD while I am down there.
> 
> -Bill
> 
>> On Apr 24, 2019, at 10:58 AM, Jef Driesen <j...@libdivecomputer.org> wrote:
>> 
>> On 2019-04-23 22:32, Linus Torvalds wrote:
>> 
>>> Have you found where the GPS coordinates might be? The G2 HUD
>>> allegedly supports GPS.
>>> (Btw, right now we export GPS information with the extra-string
>>> interface, but it would actually be much better to have an actual GPS
>>> event. No, they won't happen under water, but in addition to the
>>> beginning/end they can happen in the middle of the dive when
>>> surfacing, so an event with a timestamp etc would be really useful).
>> 
>> No, I didn't look for the GPS info. Since the Uwatec data format uses a 
>> type/value encoding for the sample data and I didn't notice a new type, the 
>> only place where GPS info can be stored is in the MISC sample. I have seen 
>> some unknown subtypes before. A quick check shows there are indeed some 
>> unknown subtypes present in the G2 HUD data:
>> 
>> Unknown misc sample with type 24 and length 3.
>> Unknown misc sample with type 16 and length 91.
>> Unknown misc sample with type 17 and length 67.
>> 
>>>> I have the necessary fixes ready to push.
>>> Apparently they aren't out yet, but I'll merge them when they are and
>>> we can get testing going.
>> 
>> I have pushed the changes now.
>> 
>> Jef
> 

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