How to deal with GATT TIMEOUT

[Chaoyue Ying]

I'm develping application on nrf52832 with nrf5SDK v17.0.

The connection interval is set to 12  to 16.And the conn_sup_timeout is set to 1000.

The condition happened frequently in my application that the connection is still display connected but the nus service is not avaliable.

And when I check the log in my phone,there always show gatt conn timeout or gatt conn lmp timeout etc.

I hope if the connection is still connected and gatt timeout happened, the application can try to reconnect gatt automatically.

Below is the source code.

1202蓝牙程序v0.0.6.rar

[Chaoyue Ying]

Hi, 你好,

I didn't try to run in a DK.我没想穿DK跑步。

I'm contacting with agency to get the datasheet for that crystal.

我正在联系代理商拿到那块水晶的数据表。

My LFCLK settings as fllow:我的LFCLK设置如下:

Finally,when I set NRF_SDH_CLOCK_LF_SRC 2,What should I do and how can I judge whether the clock may be the issue?

[Chaoyue Ying]

And I get such log when my phone connecting.

[Edvin]

1. That is the log when you changed to NRF_CLOCK_LF_SRC_XTAL?
2. What phone are you using?
3. Have you tried another type of phone? Does it look the same?
4. Can you please try to capture a sniffer trace of the connection and upload the trace (.pcapng file)? You can use the nRF Sniffer for Bluetooth LE.
5. And what does it look like when you run the same application on a DK?

Best regards,

Edvin