ST-Link V2 Not Connecting to STM32F303RCT7

[udhayakumar]

HI,

I am facing an issue where my ST-Link V2 is not detected in STM32CubeIDE while trying to connect to my STM32F303RCT7 board. 

Below are the details:

:small_blue_diamond:**Issue Description:

** - ST-Link V2 is connected via USB, but it is not detected in STM32CubeIDE.

- ST-Link Utility/STM32CubeProgrammer also does not recognize the device.

- I have checked all connections (SWDIO, SWCLK, VCC, GND).

- The board is powered correctly (3.3V).

:small_blue_diamond:**Troubleshooting Steps Taken:

** :white_heavy_check_mark: Reinstalled ST-Link drivers

:white_heavy_check_mark:Tried different USB cables and ports

:white_heavy_check_mark:Updated ST-Link firmware

:white_heavy_check_mark:Checked connections with a multimeter

:small_blue_diamond:**System Details:**

- **MCU:** STM32F303RCT7 -

**Debugger:** ST-Link V2 -

**OS:** Windows-

**STM32CubeIDE

 Please guide me on how to resolve this issue.

                                                                       Thank you for your support.

[Andrew Neil]

Welcome to the forum.

Please see: How to write your question to maximize your chances to find a solution

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@udhayakumar wrote:

my ST-Link V2 is not detected in STM32CubeIDE .

---

What, exactly, do you mean by that?

Show the error message(s) you get.

What CudeIDE version?

Is it a genuine ST-Link?

https://community.st.com/t5/stm32-mcus/how-to-recognize-a-genuine-st-link-v2-versus-a-cloned-one/ta-p/49471

Is the ST-Link detected by the PC?

https://community.st.com/t5/stm32-mcus/how-to-solve-debugger-connection-issues/tac-p/698105/highlight/true#M956

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@udhayakumar wrote:

my STM32F303RCT7 board. 

---

What board? Please give details

[STTwo-32]

Hello @udhayakumar and welcome to the ST Community.

Could you please share a picture of your ST-LINK V2. I think you are using a Clone version. More details available on the article How to recognize a genuine ST-LINK/V2 versus a clo... - STMicroelectronics Community.

Best Regards.

STTwo-32

[udhayakumar]

HI bro,

yes,i used clone version.

Best Regards

udhayakumar

[udhayakumar]

Hi bro,

i used clone version.

[STTwo-32 · Accepted solution]

with a Clone version, the connection may not work. So please make sure to use a genuine version.

Best Regards.

STTwo-32

[AScha.3]

Hi,

>does not recognize the device

What ? st-link or target cpu ?

Try : CubeProgrammer, connect : normal + software reset . Then show, what its telling...