LL_CONNECTION_UPDATE_REQ PDU

[Jusang Kim]

I'm looking for an example code of central role which can run on nRF52 DK. I want to check if it is possible for nRF52 DK to send a LL_CONNECTION_UPDATE_REQ PDU to slave.

Does anyone help me to check this ?

[Sigurd]

Hi,

Yes, that is possible by using the SoftDevice API function sd_ble_gap_conn_param_update(). Also see this answer for more information.

[Jusang Kim]

Thank you for your answer. The API function,sd_ble_gap_conn_param_update, initiates the connection update procedure in the central role as you mentioned. I added one more question here about the API function, sd_ble_gap_conn_param_update. Does sd_ble_gap_conn_param_update generate "connection update start(=LL_Connection_update_req)" in the central role and L2CAP CUP request in the slave role ?

Thank you.

[Sigurd]

Yes, that is correct.