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Associate
Apr 23, 2026 4:59 PM UTC
Solved

[STM32H563] [STM32CubeMx] Unable to enable PTP

Hello,
For one of my project, my goal is to use PTP to synchronise multiple STM32H563 to one host.
However, when configuring the ETH Device, I can only enable RMII, as the "RMII_PTP_SYNCHRO" is greyed out.
I've read the pop up that tells me to enable TIM2 as a slave with trigger source "ETR1 through Remap", Channel 1 as "Input Capture direct mode from Remap".
 And both "remap capabilities" are set to "is connected to ETH_PPS".
Is there something that I'm missing ?
Best regards

Souhaib MAZHOUDBest answer
ST Technical Moderator
Jul 1, 2026 9:14 AM UTC

Hello all,

This issue has been fixed in the latest version of STM32CubeMX 6.18.0 

Download STM32CubeMX6.18.0 from this link. 

Regards,

Souhaib

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6 replies

ST Technical Moderator
Apr 27, 2026 12:24 PM UTC

Hello @AMouton 

Thanks for highlighting this behavior,

I will check it internally and get back to you ASAP.

KR, Souhaib

To give better visibility on the answered topics, please click on 'Best answer' on the reply which solved your issue or answered your question.
AMoutonAuthor
Associate
Apr 28, 2026 4:10 PM UTC

Hello @Souhaib MAZHOUD !
If that can help you, I'm running CubeMX 6.17.0 (and I've tried with older versions too)

I've looked through the STM32H5 & STM32H7 examples and never found an example where RMII_PTP_SYNCHRO is enabled. I believe the check condition for where the option is available is problematic on all STM32Hx models.

Is there any way I can help you or your team to troubleshoot this ?

Regards,
Albin Mouton

ST Technical Moderator
Apr 30, 2026 8:38 AM UTC

Hello @AMouton 

Thanks for your detailed explanation.

This issue has been escalated to dedicated team for further investigation: Internal ticket number: CDM0062262 (This is an internal tracking number and is not accessible or usable by customers.)

BR, Souhaib

To give better visibility on the answered topics, please click on 'Best answer' on the reply which solved your issue or answered your question.
Souhaib MAZHOUDBest answer
ST Technical Moderator
Jul 1, 2026 9:14 AM UTC

Hello all,

This issue has been fixed in the latest version of STM32CubeMX 6.18.0 

Download STM32CubeMX6.18.0 from this link. 

Regards,

Souhaib

To give better visibility on the answered topics, please click on 'Best answer' on the reply which solved your issue or answered your question.