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jimmyliu86 / btstack

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Does not connect to GT-750F - connection process does not return #460

Open GoogleCodeExporter opened 8 years ago

GoogleCodeExporter commented 8 years ago 
What steps will reproduce the problem?
1. Installed latest ios8 compatible BTstack and BTstack GPS
2. Started BTstack GPS, started my GPS device: GT-750F
3. Started connection process

What is the expected output? What do you see instead?
Expected: BTstack GPS to pair with GT-750F
Instead:  Connection process continues indefinitely

What version of the product are you using? On what operating system?
BTstack 1.0-3; BTstack GPS 2.0; IOS8.4; iPad 3; Canmore GT-750F

Please attach a package log, as described here:
http://btstack.uservoice.com/knowledgebase/articles/69548-how-to-get-
btstack-communication-log

and provide any additional information below.
NB: GT-750F manual recommends using a baud rate of 38400 bps. BTstack.log 
reports a baud rate of 115200

Thanks!
Sjoerd.

Original issue reported on code.google.com by Sjoerd.G...@gmail.com on 10 Jul 2015 at 9:40

Attachments:

GoogleCodeExporter commented 8 years ago 
Hi Sjoerd

Thanks for the report and the log file. There's clearly something wrong. 
BTstack reports an event twice and BTstack GPS doesn't handle that well. I'll 
try to fix both in the next week.

(the baud rate of the GPS is not related to the baud rate that BTstack uses to 
talk to the Bluetooth chipset. In fact, BTstack uses the max 4 mbps or so, the 
same way the iOS stack does it)

Original comment by matthias.ringwald@gmail.com on 11 Jul 2015 at 8:13

GoogleCodeExporter commented 8 years ago 
Hi again

Please try this version and let me know if it 
helps:https://dl.dropboxusercontent.com/u/5138628/ch.ringwald.btstack_1.0-4_ipho
neos-arm.deb\

Original comment by matthias.ringwald@gmail.com on 11 Jul 2015 at 10:02

GoogleCodeExporter commented 8 years ago 
Hi Matthias,

btstack_1.0-4 seems to have solved the issue. I now have a steady
connection, and the GPS position is forwarded to other applications.
Thanks for you quick response!

Cheers,
Sjoerd.

Original comment by Sjoerd.G...@gmail.com on 12 Jul 2015 at 8:16