STM32H723ZG Board losing communication

PGM.2 · ‎2022-03-16

Hi all,

Nucleo-144 Stm32h723zg board while debugging suddenly loses communication and shows target not found, unable to read register values. This does not happen always but during debugging this issue is coming up,any solution or any problem with the board can someone help me out.

Thank You.

SofLit · ‎2022-03-16

Hello,

It could be an issue with your USB port: connection issue or couldn't deliver enough current to the board.

It could be due to the USB cable, so try to change the cable.

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PGM.2 · ‎2022-03-16

Hi, I have tried using other USB port and USB cable but still I am facing the same issue.

SofLit · ‎2022-03-16

Is there something plugged to the board, I mean another shield, daughter board, device? that get power from the USB? or it's only the Nucleo powered by the USB?

Do you have another Nucleo board to do the same test?

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PGM.2 · ‎2022-03-16

Yes I am using a wireless mouse but I have 2 boards actually one board works fine but the other one is facing this issue

SofLit · ‎2022-03-16

"I am using a wireless mouse" --> is it connected to the Nucleo over USB-OTG?

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PGM.2 · ‎2022-03-16

No it is connected to the laptop using a different USB port

SofLit · ‎2022-03-16

Did you try to debug a simple example from CubeH7, for example \Projects\NUCLEO-H723ZG\Examples\GPIO and without modification?

Do you have the same issue?

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PGM.2 · ‎2022-03-16

Yes but i did not face any issue while debugging the example code

SofLit · ‎2022-03-16

There are two hypothesis:

1- I suspect an issue with your application, may be a power configuration issue

2- watchdog resetting your micro.

Could you please use CubeProgrammer and provide a screenshot of "User Configuration" in Option bytes menu (OB)?

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