Hello Dale, >The 1588 clock on the device looks like it can capture the current >time from 4 different HW signals. Unfortunately, those signals all >come from timer PWM outputs.
Yes, there are two SYNC signals and two latch signals. >Maybe it's possible to cause a timer output from an external trigger (the PPS)? Yes, It is implemented in TI processor SDK and it works fine, but that are SYNC signals and generate PPS output. Below is the response I got from TI. https://e2e.ti.com/support/processors/f/791/t/889800 >There is also a software initiated capture. Maybe it's possible for a >PRU to set that in response to the PPS? If the code can be >deterministic (and supposedly, that one of reasons for the PRUs), >maybe just offset the timestamp by PRU code execution time would work. >From the thread from TI, they say it is possible, but there is no example I need help for this approach. Thanks & Regards, *JAIRAJ SOLANKI* Masibus Automation And Instrumentation Pvt. Ltd. B-30, GIDC Electronics Estate, Sector - 25, Gandhinagar - 382044, Gujarat, India. L:+91 79 232 87 275 to 277 (Ext :246) Email ID: jai...@masibus.com <http://mailto:jai...@masibus.com/> W: www.masibus.com | www.rhombusglobal.com |www.masibusuae.com Masibus CIN – U32201GJ1987PTC009994 On Tue, Apr 7, 2020 at 11:13 PM Dale Smith <dalepsm...@gmail.com> wrote: > The 1588 clock on the device looks like it can capture the current > time from 4 different HW signals. Unfortunately, those signals all > come from timer PWM outputs. > > Maybe it's possible to cause a timer output from an external trigger (the > PPS)? > > There is also a software initiated capture. Maybe it's possible for a > PRU to set that in response to the PPS? If the code can be > deterministic (and supposedly, that one of reasons for the PRUs), > maybe just offset the timestamp by PRU code execution time would work. > > Lots of "maybe"s in there... > > -Dale > > > _______________________________________________ > Linuxptp-users mailing list > Linuxptp-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/linuxptp-users > -- YouTube: *https://youtu.be/Sn2-cZ_Ln9E <https://youtu.be/Sn2-cZ_Ln9E>*
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