Android v12 and Pixel phone connection problem

RE: Android v12 and Pixel phone connection problem

Sebastijan — Tue, 08 Nov 2022 15:46:35 GMT

Hi,

We found out that buffer inside MCU, which is holding bonding data was full, result was that no bonding information was inside buffer of the first bonded device.

i had to check in version control if this was the only case, because it was quite some time ago.

Regards.

Seba

RE: Android v12 and Pixel phone connection problem

jaervil — Tue, 08 Nov 2022 07:17:45 GMT

Hello, did you manage to fix this issue? We have similar problems and are wondering how to fix this

RE: Android v12 and Pixel phone connection problem

Vidar Berg — Thu, 23 Jun 2022 13:34:24 GMT

Hi,

Sorry, I meant to ask if you had debug logs from the nrf52832 or a debugger you can attach to the board to find out what the reported disconnect reason is on the nRF chip.

RE: Android v12 and Pixel phone connection problem

DaniSi — Thu, 23 Jun 2022 13:14:57 GMT

Thank you for the quick reply. There are also the phone logs attached, or there is some more advanced loging option?

best regards, Danijel

RE: Android v12 and Pixel phone connection problem

Vidar Berg — Thu, 23 Jun 2022 12:44:20 GMT

Hello,

Thanks for providing us the logs. From the trace it appears that the connection is ended by the phone without any clear reasons. Do you have logging enabled on the nRF side so you can check what the disconnect reason is?

Best regards,

Vidar

RE: Android v12 and Pixel phone connection problem

DaniSi — Thu, 23 Jun 2022 09:24:09 GMT

Dear,

the same problems we have also expirienced on a Pixel 4 phone with android 12. You can find attached the logs of the nrf connect and wireshark.

the error output in wireshark is:
Sent Error Response - Attribute Not Found, Handle: 0x0001 (Generic Access Profile)

any ideas? Thank you.

devzone.nordicsemi.com/.../connecting-loop.pcapng

devzone.nordicsemi.com/.../nrf_5F00_phone_5F00_log.txt

RE: Android v12 and Pixel phone connection problem

Sebastijan — Fri, 03 Jun 2022 08:28:08 GMT

Hi,

Thank you for a quick answer. Next week i will get new Pixel6 phone and i will try to log everything with sniffer and get back to you.

RE: Android v12 and Pixel phone connection problem

Kenneth — Thu, 02 Jun 2022 11:02:57 GMT

I am not sure what the problem may be, but are you able to provide some on-air sniffers logs of various successful and not successful attempts for comparison?

https://www.nordicsemi.com/Products/Development-tools/nRF-Sniffer-for-Bluetooth-LE

If I were to wild guess something you can try (if used in your application):

- Try to remove (comment out) pm_handler_on_pm_evt() call from the pm_event_handler() function in main.c.
- Try to remove (comment out) data_length_update() call from on_connected_evt() function in nrf_ble_gatt.c