FreeRTOS LwIP on the STM32F407VET6

veditor · ‎2026-02-17

Hello. How to configure the FreeRTOS LwIP bundle correctly on the STM32F407VET6 and PHY Lan8720, I'm configuring it in the Cube IDE. There is a ping without FreeRTOS, but there is no ping with FreeRTOS. Thank you very much.

mƎALLEm · ‎2026-02-18

Hello @veditor and welcome to the ST community,

You need to tell much more. How you did debug the issue? did you pause your program in debug mode? did you set some breakpoints? It could be a crash in your program but you are not aware (for example a Hard fault occurred). So you need to debug it. Also ensure you have allocated enough stack size for each task using FreeRTOS.

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Andrew Neil · ‎2026-02-18

Welcome to the forum.

As @mƎALLEm said, you need to give more details - see: How to write your question to maximize your chances to find a solution

Some tips on LwIP debugging here.

@veditor wrote:
There is a ping without FreeRTOS, but there is no ping with FreeRTOS.

So compare and contrast what happens in the two cases. The debug/diagnostic options above should help...

A complex system that works is invariably found to have evolved from a simple system that worked.
A complex system designed from scratch never works and cannot be patched up to make it work.