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ethernet and lwip stack not working on stm32h750!!

Saghi.1
Associate II

Hi everyone

i'm trying to get ethernet working on a custom stm32h750​vbt6 board using lwip.i use a dp83848 interface module as physiccal in rmii mode. after some self try and error by myself and getting failed i found below subject on st and using it i sucseed to get it working.

https://community.st.com/s/article/How-to-create-project-for-STM32H7-with-Ethernet-and-LwIP-stack-working

but as you see the topic is based on working with os, so as i need a raw implementation of lwip stack i tried to do it without os, based on same step as in topic​, but with changing parts related to os configuration.

but surprisingly it doesnt work!!!

i ​cant even ping the board.

would some one help me to find my mistake?is it some missed point?is there any greate difference in lwip configuration and memory setting between raw implementation and os based?(besides some related to os mentioned in linked topic)

thank you before​

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