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LeeJaewon
Associate III
January 20, 2026
Solved

ETH communication error due to cube mx version

  • January 20, 2026
  • 1 reply
  • 391 views

In the version of cube mx 6.4.0 you can set parameters and advanced parameters, but in the version of cube mx 6.16.1 you can only select the chip in the platform setting in the LWIP in middleware.

I configured the firmware by installing the KSZ8863RLLI LAN driver in the STM32F407VET6 MCU. Cube IDE used version 1.18.1.

Ping test went well in the version of cube mx 6.4.0 and it doesn't work in the version of cube mx 6.16.1.

Is there a way to do it in the version of cube mx 6.16.1? What are the problems?

The 00.ETH file is the firmware created in the version of cube mx 6.4.0 and the 02.ETH_16.1 file is the firmware created in the version of cube mx 6.16.1

Best answer by Mahmoud Ben Romdhane

Hello @LeeJaewon 

 

This is an expected behavior in recent STM32CubeMX versions.

Starting from STM32CubeMX 6.8.0, PHY configuration (speed, duplex, auto-negotiation, .) is no longer fully handled via CubeMX GUI.

The LWIP Platform Settings only allow selecting the PHY device, while detailed PHY parameters are managed at runtime by the driver.

Ethernet speed is determined through PHY auto-negotiation during initialization and cannot be forced from CubeMX.

If a fixed speed is required, it must be configured directly in the PHY driver or user code after initialization.

Functionally, this is equivalent to CubeMX 6.4.0 behavior.

 

Thanks.

Mahmoud

 

1 reply

M
Mahmoud Ben Romdhane
Technical Moderator
January 20, 2026

Hello @LeeJaewon 

 

Let me thank you for posting.

I am currently checking this behavior, and I will get back to you ASAP.

 

Thanks.

Mahmoud

To give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.
    M
    Mahmoud Ben Romdhane
    Technical Moderator
    January 26, 2026

    Hello @LeeJaewon 

    Could you provide please screenshots that illustrate the difference between 6.4.0 and 6.16.1.

    Thanks.

    Mahmoud

    To give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.
    L
    LeeJaewonAuthor
    Associate III
    January 29, 2026

    Hello

    The left is cube.mx 6.4.0 and the right is 6.16.1.

    The big difference, as shown in the photo, is that the advanced parameters exist only in the 6.4.0 version in the ETH category, and the platform settings exist only in the 6.16.1 version in the LWIP category.

    Please check.

     

    LeeJaewon_0-1769679534249.png

    LeeJaewon_1-1769679570878.png

    LeeJaewon_2-1769679628650.png

     

     

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