Problem of Central_multilink data manage

[Martin Evans]

Hi,nordic team

I am programming with ncs v2.9.0,nrf52833

And i am doing central multilink whick should support max 6 peripheral devices connected.Now it can connect to multi peripherals but I dont know how to manage data from peripherals.

Peripherals is base on sample\peripheral_hid_keyboads.

I wonder what should I do to get data from ble in central code,which configs should be done?And what API should i call to get data from ble?These seem not be contented in central_multilink sample.

Best regard

[James168]

Many-to-one sensor collector topology, which BLE sample is better to modify? - Nordic Q&A - Nordic DevZone - Nordic DevZone

It is multilink version of central_uart/peripheral_uart to send data, can be as a reference.

[Martin Evans]

Thanks James,

I wonder how to manage data from ble,but here seems not answer.

And I have a question that what's the function of CTX?Is it belted with multilink or nus?

Best regard

[James168]

Hi,

I think connection context library (CCL) is just about the management of multilink connection handles, not about NUS. Maybe the nordic FAE can give you more help.

docs.nordicsemi.com/.../group_bt_conn_ctx.html

[Martin Evans]

Hi,

I follow your link to add CTX and add bt_conn_tx_alloc() in connected ,then send something from peripheral to cental,and then call struct bt_conn_ctx *ctx = bt_conn_ctx_get_by_id(); But ctx->data contain nothing.How data are put in ctx->data?

[Hung Bui]

Hi Martin, 
Please provide your code. 
If you take a look at the nus_client.c where we handle the NUS service on the central. You can find that in on_received() we do have the conn variable that can tell which connection the data arrive on. 
Or in bt_nus_subscribe_receive() where we subscribe to a service we will provide the nus_c->conn as the connection identify. You need to write your code to handle the connections bt_conn to identify each connection.