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Explorer II
July 16, 2025
Question

STM32F769BIT custom board - Ethernet issue

  • July 16, 2025
  • 13 replies
  • 1469 views

Hi Team,

I made a custom board using STM32F769BIT microcontroller using with the DP83867 PHY in MII mode, but I am not able to ping it. What could be the possible reasons? 

I did Memory configurations for TxDecrip, RxDecrip, LwipHeap like this.

.lwip_sec (NOLOAD) :

. = ABSOLUTE(0x2007C000);

*(.RxDecripSection)

. = ABSOLUTE(0x2007C0A0);

*(.TxDecripSection)

. = ABSOLUTE(0x2007C140);

*(.LwIPHeap)

also my SRAM configuration is like this_

MEMORY

RAM (xrw) : ORIGIN = 0x20000000, LENGTH = 496K

SRAM2 (xrw) : ORIGIN = 0x2007C000, LENGTH = 16K

FLASH (rx) : ORIGIN = 0x8000000, LENGTH = 2048K

I am using the 10pin STM32 debugger, but I am not able to see the stack usage there, when I press the debug button.

Is it due to code or due to the debugger? For this should I need the 20pin debugger?

 

Thanks,

Sayan Das

 

    This topic has been closed for replies.

    13 replies

    Technical Moderator
    August 21, 2025

    Hello @Sayan,

    Do you have any updates regarding your problem? Were you able to resolve it?

    Best regards,

    SayanAuthor
    Explorer II
    August 25, 2025

    Dear Sir,

    We are working on it. The problem isn't solved yet. I will update in this thread ASAP I get any break through.

    Technical Moderator
    August 25, 2025

    Hello @Sayan,

    I suggest you provide the current status of your debugging process so I can assist you and help speed it up. This way, you can get your solution working in a shorter time.

    Best regards,