Stm32CubeProgrammer is not recognizing the Board (instead of STM32H750 it says --). The device is wrong as well - it says STM32F72x/STM32F73x although it is STM32H750. What can i do?

[BHure.1]

[Tesla DeLorean]

Assume we're not all psychic..

What are you connecting to what, exactly? How is it connected? Be SPECIFIC

Wild guess here is that you're connecting to the ST-LINK/V3's STM32F723 with an external ST-LINK/V2

[BHure.1]

Right. Sorry for the lack of details, I wanted to be as specific as possible.

The board is STM32H750. CubeProgrammer is not recognizing it correctly and the device should not be F723.

I am using ST-LINK V2 connected to the SWD of the board and power it up via the VIN and Ground (5V) and selected the JP8 to E5V.

[Tesla DeLorean]

That's a chip​, it is on a DK/DISCO board right?

You're not connected to the right spots to get to the primary target.​

[TDK]

The board has an on-board ST-Link which you should use to program it on USB connector CN14. You don't need an external programmer. This is true for the vast majority of ST boards.

[BHure.1]

When I tried the first time, the STLK onboard connection worked. The PC was seeing the board and I was ready to try the flashing.

However, after I ran target flash from TouchGFX, it went unresponsive. If i connect the USB to STLK and put JP8 to STLK nothing happens.

The only way I can power up the board is with E5V on JP8. But, the PC is not recognizing the board (according to the picture above).

[Tesla DeLorean]

If it worked once, then it is more probable that the LDO/SMPS and VOS settings/code are wrong. The recovery method there is to strap BOOT0 HIGH and power cycle the board a couple of times until you can erase the H7

Erasing the firmware on the F723 is going to be exceedingly unhelpful in the context of recovering the bricked H750

[BHure.1]

F723 is present on the board? It is not very clear for me what is the F72X thing

[Tesla DeLorean]

FFS, this is an uphill ski, I've told you it implements the on-board ST-LINK/V3

Here's a picture to save me 1000 words..

 

[BHure.1]

Hey clive1,

Thanks for point out. Now I understand why CubeProgrammer detects it.

Tried to shortcut R144, power it by STLK and USB, got no result.

How can I reset the LDO/SMPS and VOS settings? As long as I cannot connect to the board, CubeProgrammer does not let me change anything.

[TDK]

...

Disconnect everything from the board. Plug a USB connector into CN14. Open STM32CubeProgrammer. Try to connect to the chip.

What happens?