RE: Zephyr: BLE connection refused

Hung Bui — Tue, 13 Sep 2022 11:43:11 GMT

Hi Apica,

Are you using Nordic's softdevice controller or you are using Zephyr controller ?

You may need to create git issue if it's not related to Nordic.

Have you tried to test with the default Bluetooth example in v2.7.0 ?

Error 2 means BT_HCI_ERR_UNKNOWN_CONN_ID and according to the documentation of the call back :

- @ref BT_HCI_ERR_UNKNOWN_CONN_ID Creating the connection started by
* @ref bt_conn_le_create was canceled either by the user through
* @ref bt_conn_disconnect or by the timeout in the host through
* @ref bt_conn_le_create_param timeout parameter, which defaults to
* @kconfig{CONFIG_BT_CREATE_CONN_TIMEOUT} seconds.

Could you check CONFIG_BT_CREATE_CONN_TIMEOUT configuration in your project ? By default it's 3 seconds.

I would suggest to capture a sniffer trace to get more information about the connect attempts.