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Two same STM32h757 custom boards: having issue to connect to one board but not the second one

Shiv09
Senior

‎2026-05-20 12:29 AM - last edited on ‎2026-05-20 4:05 AM by

ST moderator: updated the title to be more concise according to the below exchanges.

Hello All,

 

I am facing a problem for debugging one of the board which uses stm32h7 controller.

I am not sure why this is happening but on other board I am able to debug it, but for first one its not working.

Though the code and debug config settings are same for both the board and using same system to debug both, but on one board I am able to debug while on other its is not. so could you please tell me what I can try to resolve this issue.

 

Thanks,

SD 

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14 REPLIES 14
Shiv09
Senior
In response to mƎALLEm

‎2026-05-20 4:30 AM

This is the one used in design. received from hardware team.

Shiv09_3-1779276722704.png

 

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Shiv09
Senior
In response to Andrew Neil

‎2026-05-20 4:34 AM

Yes actually both have same schematic, one actually works and other doesnt, but the hint is other board which is not able to debug is getting connected on 1000 freq and just after loading the hex in debug mode its giving below error

File download complete
Time elapsed during download operation: 00:11:07.313

 

Verifying ...

 


Download verified successfully


Target is not responding, retrying...
Target is not responding, retrying...
Target is not responding, retrying...
Target is not responding, retrying...
Failed to read all registers from target
Failed to read registers from target
Target is not responding, retrying...
Target is not responding, retrying...

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Shiv09
Senior

‎2026-05-20 5:04 AM

Is this helpful or something more is required ?

 

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mƎALLEm
ST Employee
In response to Shiv09

‎2026-05-20 5:14 AM

@Shiv09 wrote:

This is the one used in design. received from hardware team.

Shiv09_3-1779276722704.png

 

No. This is a 24V power supply.

I suggest you to get back to your hardware team and check with them what power configuration they adopted in the board for STM32H7?

mALLEm_0-1779279233673.png

To give better visibility on the answered topics, please click on "Accept as Solution" on the reply which solved your issue or answered your question.
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mƎALLEm
ST Employee
In response to Shiv09

‎2026-05-20 5:15 AM

@Shiv09 wrote:

Yes actually both have same schematic, one actually works and other doesnt, but the hint is other board which is not able to debug is getting connected on 1000 freq and just after loading the hex in debug mode its giving below error

It could be a hardware issue.. Solder joint issue..

If you have a third board and it connects, I suggest to return that board to your hardware team to check the PCB.

To give better visibility on the answered topics, please click on "Accept as Solution" on the reply which solved your issue or answered your question.
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