RE: Check if a certain packet has been transmitted

RK — Sun, 31 Jul 2016 04:56:15 GMT

All you need to do is keep track of the TX_COMPLETE messages coming in, each one of those represents the completion of the send, in order, of the packets you sent out. So if you have 4 packets in-flight, the first TX_COMPLETE represents the first of those having been sent. So just keep whatever information you want about your packets in an array or ring buffer or something, as you send a new one add it to the list, as a TX_COMPLETE comes in, remove the first one and process it.

Or if the use case is as simple as you state above, and you just want to know for a certain packet occasionally when it's been transmitted, just keep a tally of packets in-flight incrementing each time you send one and decrementing each time you get TX_COMPLETE, that number is the current status of packets in-flight, no need to query the softdevice (and you can't anyway).

RE: Check if a certain packet has been transmitted

sidekick — Fri, 29 Jul 2016 17:33:29 GMT

I really doubt that your approach is feasible since SD's management of the buffers is completely transparent to the application. And even if it provides you some API through which you can check the SD's internal buffer count status, how would you guarantee that your application request is serviced with hard real time constraints.