CPU didn't work when config MPU

[khanhcong861989]

Dear all!

i’m working with STM32H743ZIT6 in ETH RMII, ADC, blink led if i disable MPU, Lwip config, led will blink, when i enable 

MPU_Config();
  SCB_EnableICache();
  SCB_EnableDCache();
  MX_LWIP_Init(); CPU hang, led didn’t blink, so can you help to take alook my IOC file, and share me how to config this task

[Andrew Neil]

Welcome to the forum

Please see How to write your question to maximize your chances to find a solution for best results.

 

In particular, what board are you using?

 

MX_LWIP_Init(); CPU hang,

Where, exactly, does it “hang”?  What is happening in this “hung” state?

[khanhcong861989]

hi, when i disable MX_LWIP_Init(); and MPU_Config();   SCB_EnableICache();  SCB_EnableDCache(); led can blink, if i enable these function, led didn’t blink, i don’t how to detect stop point. Current i use custom board. i try to down load STM32H743 nucleo board, it have same issue.

[mƎALLEm]

Start by enabling the cache, / configuring the MPU, remove all Ethernet related functions for the moment, do you see the same behavior with the LED?

[khanhcong861989]

hi, many thanks for your mention, when i disable ETH & Lwip, still enable MPU, CPU still work→ led blink, can you share me next step.

[mƎALLEm]

The next step: please review How to create a project for STM32H7 with Ethernet and LwIP stack working

[khanhcong861989]

i try to config as your link but issue still happen, led did blink