PAwR Subevent user data configuration based on the response received in the previous subevent.

[aksh_diode]

I am using nrf52840 to test the `periodic_adv_rsp` sample application using ncs. I had this use case where I would like to configure data in a subevent based on responses received in response slots in the previous subevent, i.e. certain user command bytes in subevent 1 data should depend on the responses from peripherals in subevent 0 and so on. In the demo application, most of the subevent configurations are made through (request_cb) at the beginning of the Periodic Advertising Interval.  Is there a way to change this behaviour so that I can introduce a user data dependency between sub events ?

const struct bt_le_ext_adv_cb adv_cb = {

    .pawr_data_request = request_cb,

    .pawr_response = response_cb,

};

[Susheel Nuguru]

I think any dependency you need to introduce needs to be done through the request_cb but that would mean that we cannot guarantee the latency in which this would be processed in the callback. 

[aksh_diode]

Could you explain it further?

Can `request_cb` be configured to be invoked only after all nodes in the given subevent are allowed to respond i.e the time allotted for response slots have passed?

I also tried to reconfigure the subevent using `bt_le_per_adv_set_subevent_data()`  inside the `response_cb()`, however, this would cause the following warning and the configuration is not being applied.

<wrn> bt_hci_core: opcode 0x2082 status 0x0c