nrf51822 android uart service disconnect

RE: nrf51822 android uart service disconnect

sowmya — Tue, 05 Jan 2016 13:16:08 GMT

We are also seeing weird behaviour of the firmware and android applications. We have created a case and are following. Thank you for the reply.

RE: nrf51822 android uart service disconnect

Petter Myhre — Tue, 05 Jan 2016 10:02:07 GMT

If the unmodified ble_app_uart works on your custom boards, I don't think the problem is with the Android application, but more likely with the modified firmware. Exacly what the problem is difficult to pinpoint. A sniffer trace of the connection (not advertising) would be helpful. Or maybe you can upload your complete project so I can test it here? Please let me know what SDK and SoftDevice I should use. If it is project is private you can add a case on your MyPage at nordicsemi.com, and we can handle it there.

RE: nrf51822 android uart service disconnect

sowmya — Tue, 05 Jan 2016 04:59:00 GMT

Hi Petter, Yes firmware is working fine on few custom boards and getting error message on few android phones like android v4.4 and 5.0 . I did few testes with nRF_UART application located in SDK and the failing custom board is working fine with the custom firmware and nRF_UART example project is not able to connect with the custom board.

Yes I looked into the sniffer log and getting CRC error in 1 out of 10 advertise packets for the custom board with custom firmware and also with nRF_UART example project.

RE: nrf51822 android uart service disconnect

Petter Myhre — Mon, 04 Jan 2016 14:21:03 GMT

So the nRF51 firmware is working fine on a few boards? But on some you get this error on the phone? The failing boards always shows the error? Do you have access to sniffer so we can see what is happening on the air?