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Associate
March 14, 2026
Solved

NUCLEO-C051C8 : ST-link is not detected on windows Desktop

  • March 14, 2026
  • 4 replies
  • 288 views

Hi ,

Recently I got a NUCLEO-C051C8 board and tried to connect it to windows and program it using STm32CubeIDE but it does not show that st-link is connected , ST-link on board blinks RED continuously. 

Cant install it ( installation goes through , but cant see it in device manager ) using stsw-link009

https://www.st.com/en/development-tools/stsw-link009.html?dl=redirect ) 

Cant connect using STM32CubeProgrammer. 

Tried 2 USb cables , various ports of pc but  in vain. 

Can someone please help ? 

 

 

Best answer by rudreshjoshi

Thanks , I am able to make it work now. 
Seems like I had to remove Jumpers from CN-2 and it did usb enumaration ( Red LED went steady ). 

Thanks a lot for your help. 

 

thanks & warm regards, 

~ Rudresh

4 replies

TDK
Super User
March 14, 2026

Blinking red LED means it's not enumerating. Usually due to using a power-only USB cable. Try a different USB cable or a different USB port.

Even if drivers aren't installed, something should show up in device manager as an unknown device.

"If you feel a post has answered your question, please click ""Accept as Solution""."
KDJEM.1
Technical Moderator
March 16, 2026

Hello @rudreshjoshi and welcome to the community;

 

Could you please take a look at this article How to solve connection errors when connecting and programming the STM32 target board may help you to solve the issue.

 

Thank you 

Kaouthar

To give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.
Andrew Neil
Super User
March 16, 2026

As @TDK said, try a different cable - make sure it's one that actually gives a data connection with other devices.

More things to try here.

A complex system that works is invariably found to have evolved from a simple system that worked.A complex system designed from scratch never works and cannot be patched up to make it work.
rudreshjoshiAuthorBest answer
Associate
March 18, 2026

Thanks , I am able to make it work now. 
Seems like I had to remove Jumpers from CN-2 and it did usb enumaration ( Red LED went steady ). 

Thanks a lot for your help. 

 

thanks & warm regards, 

~ Rudresh