SDK15.3 S132 disconnect from oppo when send data

RE: SDK15.3 S132 disconnect from oppo when send data

taol — Fri, 20 Aug 2021 13:18:25 GMT

Thanks again.

The device is not bound to OPPO. Through the link I forwarded and compared with the nrf_ble_gatt.c of S112 and S132, I blocked the data_length_update call under on_connected_evt when connecting. This problem has been solved, because the device does not need to be related to the center. I guess this will not cause other problems. Thanks for your help.

RE: SDK15.3 S132 disconnect from oppo when send data

Simonr — Fri, 20 Aug 2021 12:40:03 GMT

If another similar OPPO phone works as intended, please try delete bonding information on both the nRF device and OPPO phone to make sure that one of them don't think they're already bonded and therefore skips vital parts of the connection process while the other device does not. This will likely cause a timeout like you're seeing in a specific device.

If not, please upload the sniffer log as a .btt file so I can review it. Are the two OPPO phones the same model and do they run the same Android version?

Best regards,

Simon

RE: SDK15.3 S132 disconnect from oppo when send data

taol — Thu, 19 Aug 2021 09:59:35 GMT

I think my question is somewhat similar to this one:https://devzone.nordicsemi.com/f/nordic-q-a/16498/s132-v3-exchange-mtu-le-data-packet-length-extension-does-t-work ,but not sure, and don’t know how to solve it too.

RE: SDK15.3 S132 disconnect from oppo when send data

taol — Thu, 19 Aug 2021 08:33:59 GMT

Thankyou for your Reply.

1. My device is NRF52832, other phones like iphone, and some android phones SAMSUNG, HUAWEI, XIAOMI, also an other OPPO-reno all works fine.

2. Sniffer log after screen show nothing but the device return advertising after 4 sec(Connection supervisory time-out (4 seconds)).

RE: SDK15.3 S132 disconnect from oppo when send data

Simonr — Wed, 18 Aug 2021 12:30:06 GMT

From the snippet of the sniffer log you uploaded I'm not able to see a disconnection event or this disproportionate max_rx_time you mention. Could you possibly upload a full sniffer log where we can see the disconnect, as well as a sniffer log where the application is running as expected when connected to another phone for comparison?

Also, what phones have you tested on where this works? Is it only this OPPO-k7x that causes disconnects? Can you explain a bit more on what nRF52 device you're using as well? An nRF52 Development Kit or a custom board/third party module?

Best regards,

Simon