Skip to main content
Len_Heske
Len_Heske
Associate II
Feb 25, 2026 8:19 PM UTC
Solved

Failed to start GDB Server - Error in intializing ST-Link Device

Hi,

 

I'm a beginner programming a NUCLEO-N657X0-Q.

The LD5 is blinking and I can't get a connection to the board. Even with the demonstration code/project, it wouldn't work. In STM32CubeIDE I get the attached error message. As of yet, I never got to launch any program at all.

 

Thank you for your help!

Len

Len_Heske
Len_HeskeBest answer
Associate II
Feb 26, 2026 2:41 PM UTC

Case closed,

all I had to do is rearrange the pin bridges of BOOT0 and BOOT1. The getting started manual said to set both high as the default position.

Turns out, I had to set both low. Now I can run my code without any issues :)

Cheers and thank you

Len

View in thread

6 replies

TDK
TDK
Feb 25, 2026 8:52 PM UTC

What are the status LEDs doing?

Screenshot 2026-02-25 155112.png

Can you connect with the standalone STM32CubeProgrammer? If not, post a full screenshot of the error message when it fails.

"If you feel a post has answered your question, please click ""Accept as Solution""."
    Len_Heske
    Len_HeskeAuthor
    Associate II
    Feb 25, 2026 8:56 PM UTC

    Hello TDK,

    see the attached video.

    Thank you for your help :)

    TDK
    TDK
    Feb 25, 2026 11:43 PM UTC

    Hmm, sorry, I don't really know what the issue could be. It can see the st-link, the board has voltage. Should be working.

    "If you feel a post has answered your question, please click ""Accept as Solution""."
      Len_Heske
      Len_HeskeAuthor
      Associate II
      Feb 26, 2026 7:52 AM UTC

      Hello TDK,

      thank you very much for your attempt at helping me!

      What would be your guess: is it a problem with my workstation and the software/driver setup, or a problem with the ST-Link module of my microcontroller?

      For more context, I use both STM32CubeIDE for VS Code and the standalone application. I also use STM32CubeMX and STM32CubeProgrammer, although I'm very unfamiliar with the latter and don't really know what to do with it.

      I think I set up the work environments and projects correctly. I previously coded on a NUCLEO-C031C6 and got everything to work before. Granted, that MCU is way simpler and doesn't have an FSBL and secure applications.

      The N657X0 chip also doesn't use flash which makes it even more fragile in the hands of a beginner like me :)

      I usually code on a register level and don't use HAL or LL, so I somewhat understand how things work but then again not really :D I'm still very much a beginner, especially when it comes to anything outside of the register logic.

      Greetings

      Len

      Terms & ConditionsAccessibility statement