Hello, I am working on a project in which I want to implement IEEE 1588 PTP Grandmaster. I am using linuxptp to implement IEEE 1588. Below are the details of my project
PTP Grandmaster with GPS Receiver Hardware: AM335x ICEv2 kit We have tested IEEE 1588 PTP as Grandmaster with hardware timestamping on above-mentioned hardware. We have tried with below-mentioned ways 1) Using PRU's 2) Using CPTS Timer We are getting pretty good results approx < 200ns Accuracy (With PPS) as a Slave with above hardware and linuxptp but not getting the same accuracy as PTP Grandmaster with the same Hardware. We have applied below commands of linuxptp to implement IEEE 1588 Grandmaster. 1) Ran ptp4l in layer 2 P2P configuration. ptp4l -i eth0 -2 - P -m 2) Run phc2sys with autoconfiguration. phc2sys -a -r -r -m 3) Run phc2sys to synchronize CLOCK_REALTIME to /dev/pps0 phc2sys -d /dev/pps0 -m As per my understanding to implement a Grandmaster we need to discipline the PHC to GPS PPS (We have Ublox GPS with 1 PPS Out). We tried to use a PPS-GPIO Linux driver, but the accuracy provided by this is very low in microseconds. Is there any way that I will get sub-microsecond accuracy. Below are the Queries from my side 1) Is there any way we can discipline our PHC to GPS (PPS) with sub-microsecond accuracy? 2) Is the hardware we are using is capable of disciplining PHC to GPS (PPS) ? 3) If it is not then what hardware do you suggest which can provide nanosecond level of accuracy? If any Hardware modification is required then we are ready to change the Hardware and if required I will share the results for the same. Your help will be highly appreciated. 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 -- YouTube: *https://youtu.be/Sn2-cZ_Ln9E <https://youtu.be/Sn2-cZ_Ln9E>*
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