LWIP Free RTOS Problem

[Arman Ilmak]

Hi.

I have a problem while using lwip and freertos.

The board is based on stm32h743vih.

The mpu configuration is done correctly i think.

My problem is after i start udp server and start to send data with udp, everything is ok, but after a while i will enter a loop in xQueueSemaphoreTake an in the configASSERT( pxQueue->uxItemSize == 0 ).

I searched a lot and i saw this:

https://community.st.com/t5/stm32cubemx-mcus/cubemx-lwip-ethernet-link-thread-bug/m-p/126556

I did what it said but this time when it happens im not in the loop but the other tasks get very slow and actually a task with osdelay(1) is executing every 1 second.

What should i do?

[KDJEM.1]

Hello @Arman Ilmak ,

Could you please check the MPU and LWIP configurations, for that I recommend you to take a look to How to create project for STM32H7 with Ethernet an... - STMicroelectronics Community

Also, I advise you to start with an available example. I think this example can help you STM32H7-LwIP-Examples/STM32H743_Nucleo_ETH at main · stm32-hotspot/STM32H7-LwIP-Examples · GitHub.

I hope this help you to solve your issue.

Kaouthar

[Arman Ilmak]

Ive done exact the same configuration.

But i see odd behavior.

When i config only eth with rtos and lwip i see hardfault.

But with the same eth configuration and just enabling uart (no other action just hal will call uart init)

i dont see hardfault and everything work fine.

Im really confused.

[GreatEel21st]

@KDJEM.1  

The same goes with Github example codes as they fail with Freertos tasks stuck

[jackmh]

I'm also having this issue with my STM32H725ZGT6, but not my STM32H723 Nucleo board, does anyone have any updates on this issue?

[KDJEM.1]

Hello @jackmh and welcome to the Community,

Could you please share FreeRTOSConfig.h file?  

Are you use FreeRTOS with CMSIS_V1 or CMSIS_V2?

Could you please create a dedicated thread with a detailed description for your issue.

Thank you.

Kaouthar

[jackmh]

Sorry for the delayed response, it turned out to simply be not giving the default task enough memory. 512+ Words seems to be needed.