Hi Maybe the magic stamping has been hiding in the chips all along. What’s pretty clear is that if it’s there, it’s well hidden ….
Bob > On Jan 14, 2017, at 7:04 PM, jimlux <jim...@earthlink.net> wrote: > > On 1/14/17 3:32 PM, Bob Camp wrote: >> Hi >> >> >>> On Jan 14, 2017, at 5:29 PM, Scott Stobbe <scott.j.sto...@gmail.com> wrote: >>> >>> I don't think wifi is ever going to be a real-time system, as it shares the >>> ether with all other ISM devices. That said even 1 ms of variation is still >>> 4 orders of magnitude greater than the actual time of flight. >>> >>> The precision time aspect will most certainly be done in hardware, even if >>> it's just as simple as a timestamp of receiving the beacon frame. >> >> My concern *is* that it’s going to be like 1588 in that respect. Off we all >> have >> to buy new time stamping hardware. Until that’s all up and running >> you don’t get the new timing stuff. Based on what I see, there’s not a lot >> of hope for it otherwise. >> > > > just rummmaging through some datasheets.. > I see that for the SG922-0007 (a WiFi module with AT command set) they do > list a value that can be read for "timestamp of last received packet" and > "timestamp of last transmitted packet" > > > As to what those might mean?? > > A Copperhead WiFi shield for Arduino has a microchip MRF24WB0MA on it (it's a > few years old, I think it's been replaced by something newer) > > Microchip doesn't make it easy to find the SPI interface details, though. > > > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.