Skip to main content
Associate
Jul 16, 2025 5:00 AM UTC
Question

STM32F769BIT custom board - Ethernet issue

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.

20 replies

ST Employee
Aug 21, 2025 1:16 PM UTC

Hello @Sayan,

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

Best regards,

To improve visibility of answered topics, please click 'Accept as Solution' on the reply that resolved your issue or answered your question.
SayanAuthor
Associate
Aug 25, 2025 5:46 AM UTC

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.

ST Employee
Aug 25, 2025 9:10 AM UTC

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,

 

To improve visibility of answered topics, please click 'Accept as Solution' on the reply that resolved your issue or answered your question.