Ping is not happening on STM32H753 with LwIP and FreeRTOS

[chaithu_coder]

https://controllerstech.com/stm32-ethernet-hardware-cubemx-lwip-ping/?utm_source=chatgpt.com

I followed steps of above website data based to configure Ethernet on stm32h753zi but still ping is failing i cant able to find the exact error can anyone help to tell the exact configuration of this board   

[mbarg.1]

1. First: dont rely on artificial stupidity . not alla board are wired the same, minimal changes to hw can stop operation.
2. Turn on your brain - does your hw and your setup work? download a tested example from STM site - most examples are with DHCP on, you need a DHCP server running on network - use ethernet statistics and registers to get info un packets arriving to your device.

[chaithu_coder]

Thanks for the reply. I understand that not all boards are wired the same, which is exactly why I’m looking for STM32H753ZI-specific guidance, not generic Ethernet steps.

I’m using a NUCLEO-H753ZI (LAN8742 PHY, RMII). Link LEDs are up and blinking, PHY reports link-up and auto-negotiation complete. I’ve tested official ST CubeH7 LwIP examples on NUCLEO-H743ZI and ping works there, but using the same configuration on H753 ping fails.

I’ve tried both DHCP and static IP, and I do have a DHCP server running when needed. I’m also checking ETH MAC registers, PHY registers, and LwIP netif state.

Where I’m stuck is mainly around Cortex-M7 cache/MPU handling on H753:

• correct RMII 50 MHz clock source

• correct placement of ETH DMA descriptors and buffers (RAM_D2 vs AXI SRAM)

• required MPU configuration for non-cacheable regions

• whether extra cache maintenance is needed with FreeRTOS + LwIP on H753

• any CubeMX differences between H743 and H753 that affect Ethernet

If there’s a known-working CubeMX .ioc, official ST example, or a checklist specific to NUCLEO-H753ZI Ethernet, that would really help.

[Vidar]

Dude, everyting what you posted is ChatGPT, but anyway. 

Have you chekced your DMA placement and you pin layout of the ETH pins? Look up yoour schematics! I recently had a similar issue

[chaithu_coder]

Yah, i verified with schematic 2 pins is wrongly configured i re configured based on schematic

can i get exact configuration of Ethernet for this stm32h753 LWIP+FreeRTOS based anywhere it can helpful for me to work it out.

[Vidar]

Look here for example projects:https://github.com/STMicroelectronics/STM32CubeH7/tree/master/Projects

Also, maybe just fix your pin assignent, otherwise you will encounter clock issues

[STackPointer64]

Hello @chaithu_coder,

Attached is a project for the NUCLEO-H753. You can compare configurations(IOCs) and have a working project. Please make sure to add the proper linker file configuration to your project. Let me know if you need further assistance.

Best regards,