i.MX ProcessorsのトピックPTP example code for i.MX RT1064...?

PTP example code for i.MX RT1064...?

np — Thu, 19 Jan 2023 17:36:57 GMT

Hi everyone,

We added PTP support to our i.MX RT106x code back in the SDK 2.7.0 days, but we're now moving forward to 2.12.x and it seems a lot has changed (PTP-wise) since those AN12149 days.

Is there an updated application note discussing how the SDK supports PTP? I found driver_examples\enet\txrx_ptp1588_transfer\enet_txrx_ptp1588_transfer.c (and the readme.txt with it), but wondered if there was anything else I could read?

Thanks, Nick

Re: PTP example code for i.MX RT1064...?

PabloAvalos — Fri, 27 Jan 2023 22:46:26 GMT

Dear @np

Thanks a lot for reaching our technical support and thanks a lot for your patience.

Regarding your concern: "Is there an updated application note discussing how the SDK supports PTP?", in this case I am afraid that there is not a new one.

Additionally, something else that you could read, there is no other type of examples, our SDK example on this case is the only information available,

I apologize for the issues that this might cause you.

Please if you have some other questions, feel free to open a new thread or reply to this one. I am willing the help.

Best Regards.
Pablo Avalos.

Re: PTP example code for i.MX RT1064...?

np — Wed, 08 Mar 2023 09:22:14 GMT

Hi Pablo,

It seems that the same basic problem was flagged back in 2020 by @andylime : https://community.nxp.com/t5/Embedded-Software-and-Tools/ptp-enet-driver-problem/m-p/1192368

Can you please tell me who in NXP has any 'ownership' of PTP / 1588 support for i.MX RT processors? I saw a forum post that said this was @howard_liu , is that correct?

It seems that partial support (via modifications in AN12149) was introduced around SDK 2.3 / 2.4, but then dropped around SDK 2.8, and here we are with SDK 2.13 which has no sign of low-level 1588 functions like ENET_GetRxFrameTime() and ENET_GetTxFrameTime().

Thanks, Nick

Re: PTP example code for i.MX RT1064...?

howard_liu — Wed, 08 Mar 2023 09:50:32 GMT

Hi Pablo and Nick,

PTP is still supported but the low-level APIs are changed. Driver will not provide API to get the frame's time directly anymore. Application itself needs to get the time of the transferred frame using other low-level APIs.

@tim_wang has experience on new ethernet driver/API. He likely helps here.

Regards,

Howard

Re: PTP example code for i.MX RT1064...?

shizj — Tue, 28 Nov 2023 03:51:43 GMT

I have the same problem when adding PTP feature with current SDK version(2.14.0) of i.MXRT1052.

Is there any progress or any suggestion could be help?

Thanks!