Thanks for reply! But Bluetooth speed itself is not a decision factor of time sync accuracy as time sync message is small, we only concern about the delay/jitter caused by Linux OS - or perhaps it is not a concern at all? We will find out. Thanks!
On Tue, Sep 11, 2018 at 5:52 PM, Robert Nelson <[email protected]> wrote: > On Tue, Sep 11, 2018 at 4:29 PM WenZhan Song <[email protected]> > wrote: > > > > Robert, > > > > Thank you for replying our questions! To be clear, what we intend to do > is: we want to design a time synchronization protocols among a group of > BBBWs using the bluetooth radio in BBBW, with the goal to achieve 10 us > accuracy. Thus, we want to program PRU to send and receive bluetooth > messages with low-level timestamping for that accuracy. The hypothesis is > that ARM with Linux perhaps has too much uncertainty and delay while PRU > can reduce that. > > and "how" exactly is the PRU going to reduce that? It doesn't control > the radio directly... > > > Is this possible? If not, do you happen to know any mature way to > achieve 10 us accuracy with Bluetooth or WiFi radio. I currently use GPS > but it does not work well indoor. > > PS, If you look at: > > http://blog.bluetooth.com/exploring-bluetooth-5-how-fast-can-it-be > > It would be better to just use a Bluetooth 5 usb dongle.. > > Regards, > > -- > Robert Nelson > https://rcn-ee.com/ > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/CANiAfDLAtov9HfaFoBd7r08yhvFCuyw2SWErv7v3VQEDxWDQHg%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
