Identify characteristic on_tx_complete event

[KV]

I have two characteristics inside a same service - one characteristics notifies periodically and another on demand. I call sd_ble_gatts_hvx to send notifications with appropriate value handles.

When notification is complete, I get on_tx_complete event. Inside this event handler, how can I find out which characteristics's notification was complete?

I don't have the handle for the characteristics that completed notification. I am looking at the ble_gatts_evt_hvn_tx_complete_t structure in ble_gatts.h which has only the count of completed notifications.

I am using nRF52840, SDK 14.0.2 and soft device 5.0.0.2_alpha

[endnode]

Well it would be handy but again my hypothesis is that this event comes straight down from LL or L2CAP layer because that's where PDUs are acknowledged by the other side and assembly/reassembly of ATT messages is done. So I'm afraid you will really need to manage your priorities on APP layer. On the other side it should be easy: what goes out is always the first in the queue so if your get TX_COMPLETE event with count 3 you know that first three went out. If you really care which were these then you need to somehow remember the sequence and do some logic around it on your side.