STM32H757 ETH and LCD performance issue

[NAham.1]

Hi,

I am trying to integrate ETH & TFT LCD i nto my application using STm32H757 MCU

TFT LCD display interface is working properly unless ETH is configured 

ETH is configured through below link

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

Ethernet module is able to get the IP address connected to DHCP server

MPU is configured and I-Cache & D-Cache Enabled as given in above link

One problem with ETH configuration is - Application is not executing in normal mode.

Need to click on F5 (3-5 times) in debug mode as in the below link'

https://community.st.com/t5/stm32cubemx-mcu/start-code-execution-problem-with-mx-lwip-init/td-p/167691

When enabling D-Cache for ETH irrespective of MPU region configurations, TFT LCD is not displaying clearly 

Disabling D-Cache makes LCD display clear

Unable to find the proper solution for both issues

Please extend your valuable support to fix it

 

[FBL]

Hello @NAham.1,

 

Would you please share your memory definitions in the linker file? Have you tried to increase the stack size? 

When D-Cache is enabled, it can cause issues with memory coherency if the memory regions are not properly configured. Would you share your MPU configuration?