BLE connection create parameters and connection parameters questions

[PingISTL]

Dear support

I am developing a generic central application intended to connect any BLE devices which is connectable. So I need to figure out which parameters are needed and make the them configurable. In Central multilink sample, there are two sets of parameters shown below:

	struct bt_conn_le_create_param create_param = {
		.options = BT_CONN_LE_OPT_NONE,
		.interval = INIT_INTERVAL,
		.window = INIT_WINDOW,
		.interval_coded = 0,
		.window_coded = 0,
		.timeout = 0,
	};
	struct bt_le_conn_param conn_param = {
		.interval_min = CONN_INTERVAL,
		.interval_max = CONN_INTERVAL,
		.latency = CONN_LATENCY,
		.timeout = CONN_TIMEOUT,
	};

The first one is create_param, and second one is conn_param, I read some explanation about the conn_param, but never find anything on create_param, could someone explain to me please? is INIT_INTERVAL and INIT_WINDOW important to make connection? shall I make it changeable by user?

Thank you.

Ping

[Menon]

Hello Ping,

Please take a look into this blog from Nordic which explains about the connection parameters and how to set each one accordingly. You can take a look into this section from the softdevice which explains about setting up interval and window parameters.

connection is terminated by the peripherals with reason code of 0x13!

Indicates the remote user terminated the connection for some reason. Are you trying with nRF connect mobile/desktop app if so can you share the connection log to get more idea on the disconnection reason.

Kind Regards,

Abhijith