STM32F769BIT custom board - Ethernet issue

[Sayan]

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

[mbarg.1]

Does you code work on a validated board, like a Nucleo one (obvious, with legacy PY interface)?

This should tell if is a PHY problem or a coding problem.

[Sayan]

I don't have nucleo board. Is there any way to debug? 

[mbarg.1]

A) your board is defective

B) your code is wrong

which one is your case?

Get one board 100% tested and test your code - later you can test your hw !!

[STackPointer64]

Hello @Sayan, and Welcome to the community!

To maximize your chances of finding a solution, please refer to How to write your question to maximize your chances to find a solution for best practices.

In particular, please include the following details in your post:

• A schematic showing how your device is connected since you are using a custom board
• Clear photos of your setup
• A description of the testing, investigation, or debugging you have performed so far
• (Optional) STM32CubeMX configuration file (.ioc)

Providing this information helps the community assist you more effectively.

Best regards,

[Andrew Neil]

As @STackPointer64 said, more info is needed.

You haven't said what IP stack you're using - they usually have options for diagnostic output to help debug...

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@Sayan wrote:

I am using the 10pin STM32 debugger

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But have you correctly wired it?

That's why showing your schematic is essential!

How have you validated your DP83867 design? Previous discussions relating to DP83867:

https://community.st.com/t5/forums/searchpage/tab/message?advanced=false&allow_punctuation=false&q=DP83867%20

PS:

Have you checked-out TI's Product Page for the DP83867 - I can see a couple of debugging/troubleshooting guides there:

https://www.ti.com/product/DP83867E#tech-docs

https://www.ti.com/product/DP83867E#software-development