Warning: The core is locked up

[Devank_J]

Hi,



I am getting a warning "The core is locked up" and a few more (please refer to the attached image).

I have also tried flashing with the hex file, but some flashing issue is observed.

[Tesla DeLorean · Accepted solution]

NUCLEO-H753ZI

ST-LINK/V3

Is the device secure, and potentially blocking/disabling SWD/JTAG connectivity?

If you jumper BT0 and VDD does it behave differently?

High Quality USB 2.0 Cable? Not charging cable

Via Hub or Docking Station?

Had it worked reliably before/earlier?

Behaves this way on other computers?

[Devank_J]

Hi Tesla DeLorean

I am using the Nucleo-H753ZI with ST-LINK/V3

Is the device secure, and potentially blocking/disabling SWD/JTAG connectivity? 

• It is not blocking, I am able to connect it to target.

If you jumper BT0 and VDD does it behave differently?

• Yes, I changed the Boot pin 0 to VDD (Core under reset is observed).

High Quality USB 2.0 Cable? Not charging cable

• Yes, ST's provided cable

Via Hub or Docking Station?

• No

Had it worked reliably before/earlier?

• Yes

Behaves this way on other computers?

• Yes

Regards,
Devank J

[jzsenthy]

I had the same error and the issue was the "Start Address" value was wrong.

I had accidentally selected the wrong file+filetype (.hex instead of .bin) and it erased my start address (and disabled the field). I had to select the correct file (the .bin file), then I tried filling the Start Address back in by typing

0x08

But that wasn't good enough. I had to fully type out

0x08000000

And then it worked correctly and I stopped getting the "Core is locked up" error.

From your screenshot, it looks like you may have the same issue (wrong Start Address).