On Tue. 12 Jan 2021 at 11:14, Richard Cochran <richardcoch...@gmail.com> wrote: > > On Tue, Jan 12, 2021 at 09:00:33AM +0900, Vincent MAILHOL wrote: > > Out of curiosity, which programs do you use? I guess wireshark > > but please let me know if you use any other programs (I just use > > to write a small C program to do the stuff). > > I was thinking of PTP over DeviceNET (which, in turn, is over CAN). > This is specified in Annex G of IEEE 1588. > > The linuxptp stack has modular design and could one day support > DeviceNET. It would be much easier for linuxptp if CAN interfaces > support hardware time stamping in the same way as other network > interfaces.
I actually also thought of implementing PTP but for a slightly different goal: synchronise the clock of the different CAN controllers connected to a same Linux host. But so far, it is just a rough idea and I never looked really deep into the technical details of linuxptp. However, I did not know about DeviceNET. I am not really aware of the use cases for industrial automation applications. Glad to have asked, learnt something :) Yours sincerely, Vincent
