Error in initializing ST-LINK device. Reason : No device found on target.

[AR K.1]

Hello @ST_community,

I am Trying to program STM32-H7A3ZI-Q Nucleo board.

I couldn't debug the board attached the images for reference. Also Attached the log file for reference. Please let me know how to debug.

Thanks,

[Tesla DeLorean · Accepted solution]

Suggests the MCU is non-responsive.

Did you program it previously?

Does it work with STM32 Cube Programmer as a stand-alone application?

If you have the LDO/SMPS settings wrong you can block access to the STM32.

The trick then is to solder a jumper between BOOT0 (BT0) and VDD.

With BOOT0 HIGH remove ALL power and USB

Reapply power/connections.

Attempt to access via STM32 Cube Programmer.

If that succeeds, ERASE your code from the part.

Fix your code.

[S.Ma]

Hey Clive, should the board use copper pads for tweezer boot short to bootloader, or slide switch for a more permanent solution? Say user developping his own bootloader or other possible cases?

[AR K.1]

Thank you, sir.

It works​

[Tesla DeLorean]

After having to do this more than once, I find the following to be a workable solution, along with the spare jumper(s) ST conveniently parked on the back of the board. People should do whatever works for them..