Thanks, I will try it this weekend on one of my boards….
> On Jan 27, 2023, at 11:12 AM, Alan C. Assis <acas...@gmail.com> wrote: > > Yes, it is supported: serial and network (ethernet and WiFi). > >> On 1/27/23, James Dougherty <jafr...@gmail.com> wrote: >> Outstanding! >> >> Serial and Network… >> >> Thank you >> >>>> On Jan 27, 2023, at 10:01 AM, Alan C. Assis <acas...@gmail.com> wrote: >>> >>> Hi James, >>> >>> ESP32 is supported, which features do you need? >>> >>> BR, >>> >>> Alan >>> >>>> On 1/27/23, James Dougherty <jafr...@gmail.com> wrote: >>>> I haven’t looked at it yet, but I am working on ESP32; is WROOM >>>> supported >>>> in master or just the S3/C3? >>>> >>>> >>>> On Fri, Jan 27, 2023 at 4:23 AM Robert Alexa <robertalexa2...@gmail.com> >>>> wrote: >>>> >>>>> Hi all, >>>>> >>>>> What's the current status of this? I'm also interested in adding PTP >>>>> support to NuttX, especially on ESP32 if that's possible - I haven't >>>>> done >>>>> any research yet regarding the hardware capabilities of ESP32 in this >>>>> matter. >>>>> >>>>> As a first step I was thinking of adding support for the PTP daemon, as >>>>> Alan suggested. >>>>> >>>>> Regards >>>>> Robert >>>>> >>>>>> On Fri, 9 Dec 2022 at 07:39, James Dougherty <jafr...@gmail.com> >>>>>> wrote: >>>>> >>>>>> Thanks Arie, >>>>>> >>>>>> Yes, very true, it depends on your application! >>>>>> >>>>>> My statement about what makes a good clock is very subjective. This >>>>>> all depends on your application, your measurement and of course your >>>>>> jitter. >>>>>> >>>>>> - For Wireless AV, a 10ms gps clock is fine. >>>>>> - For Wireless Earbuds, a 10us clock is required with 1us phase max >>>>> drift. >>>>>> - For Photon measurements, you're in the nano/pico domain... >>>>>> >>>>>> Accuracy costs money, how well do you need to measure? >>>>>> >>>>>> So the message is to know your application! Your application will have >>>>>> varying time requirements. The infrastructure and machinery for >>>>>> relaying and exchanging time is all PTP provides as a tool. >>>>>> >>>>>> The 802.1AS spec specifies how to manage that clock across multiple >>>>>> time domains. >>>>>> >>>>>> Related, know your latencies! >>>>>> >>>>>> https://gist.github.com/jboner/2841832 >>>>>> >>>>>> Best regards >>>>>> -James >>>>>> >>>>>> >>>>>> >>>>>> On Thu, Dec 8, 2022 at 3:37 AM Arie de Muijnck <nu...@ademu.com> >>>>>> wrote: >>>>>> >>>>>>> Beware of that 1PPS signal. A few years ago I bought several GPS >>>>> modules >>>>>>> and compared the signals. Some differ by exactly 100ns (within 2ns, >>>>>>> the >>>>>>> accuracy of my scope) from others, and that is not the width of the >>>>>> pulse, >>>>>>> that is much wider, I compared only the edge that are comes close to >>>>> the >>>>>>> others. Maybe I will test again, have a 1 GHz LeCroy now, should be >>>>> able >>>>>> to >>>>>>> do jitter measurements too. >>>>>>> Oh, and yes, before someone asks: all antenna and scope cables were >>>>>>> the >>>>>>> same length... ;-) >>>>>>> >>>>>>> Arie >>>>>>> >>>>>>> >>>>>>> On 2022-12-08 06:33, James Dougherty wrote: >>>>>>>> Related to this, I have a GPS receiver generating PPS interrupts on >>>>>>> SAME70. It would be a perfect GMC - Atomic clock sync! >>>>>>>> I will look at this when I get a chance. I have a lot of upstream >>>>>>> contributions from HW platforms I have done over the last 5 years or >>>>>>> so >>>>>>> with myself and others ... I need some time to >>>>>>>> patch master on upstream -- something for 2023 and now that NuttX >>>>>>>> has >>>>>>> graduated! Yay! >>>>>>>> >>>>>>> >>>>>> >>>>> >>>> >>
