UART example in SDK 13.0.0 will not connect

RE: UART example in SDK 13.0.0 will not connect

Hung Bui — Thu, 04 May 2017 07:48:18 GMT

I just checked the Sony E6553 spec stated that it only supports Bluetooth 4.1, most likely it's the reason why it disconnects.

gnf — Wed, 03 May 2017 13:12:51 GMT

Thank you! When commenting out the lines you suggest it works.

I have not yet understood what the experimental GATT module does. Is this new for ver 13 of the SDK?

Anyway, I have tested the following phones:

By the way, the app I was using on the Android devices was nRF Connect version 4.11.0

Hung Bui — Wed, 03 May 2017 08:58:18 GMT

Hi GNF,

Could you let me know which phone are you using ?

It seems that the phone doesn't support Bluetooth 4.2 features and when the nRF52 request it would just simply disconnect.

My suggestion is to disable request to extend ATT MTU and data length which is handled by the experimental GATT module.

Please try to comment out gatt_init(); in main() and nrf_ble_gatt_on_ble_evt() in ble_evt_dispatch().