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veditor
Associate
Feb 17, 2026 3:28 PM UTC
Question

FreeRTOS LwIP on the STM32F407VET6

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.

2 replies

mƎALLEm
mƎALLEm
ST Technical Moderator
Feb 18, 2026 8:49 AM UTC

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.

To give better visibility on the answered topics, please click "Best answer" on the reply which solved your issue or answered your question.
    Andrew Neil
    Andrew Neil
    Super User
    Feb 18, 2026 10:53 AM UTC

    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.
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