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Hi all,
one of our customers needs to accomplish synchronization with an upstream compute system to the granularity of several 10s of ms.
The system has AM273x CPSW connected ethernet to the upstream compute side, and CAN from the AM273x to multiple downstream TI Radar devices. The idea is to synchronize the AM273x Slave clock via PTP and then allow the AM273x send synchronized trigger messages to the Radar devices.
Therefore the question whether we have an implementation of PTP for the AM273x, and whether that potentially uses the CPTS module to achieve good accuracy.
I did not see any PTP implementation in the AM273x SDK.
Thanks!
--Gunter
Hi Gunter,
PTP example is already supported in the current SDK. Please note this is reference stack and for production quality PTP, TI recommendation is to 3P (Excelfore). There is plan from TI to provide 3P integrated PTP stack out of box but it’s not yet closed.
Customer can get started with below example. It supports exactly what you mentioned. Team has confirmed about accuracy in the ~10ns range.
AM273x MCU+ SDK: Enet CPSW TimeSync PTP Demo
Regards,
Prasad