Use the CyBle_L2capLeConnectionParamUpdateRequest on the peripheral side. (Refer to BLE Datasheet for more details on this API). This would trigger the CYBLE_EVT_L2CAP_CONN_PARAM_UPDATE_REQ on the Central. Now the central should call CyBle_L2capLeConnectionParamUpdateResponse API to acknowledge the connection interval change request.
Hi @Madhu Sudhan,
I used this function because when I put the connection intervals between 1000 and 2000, the function does not send the request or else it loses connection. What can it be?