Error in initializing ST-LINK device. Reason: No device found on target.

[MarktenKlooster]

Hi everyone,

I'm having trouble writing my program to my microcontroller, and I'm hoping someone can help.

When I tried to write my program in STM32CUBEIDE, I received the following message:

STMicroelectronics ST-LINK GDB server. Version 7.8.0
Copyright (c) 2024, STMicroelectronics. All rights reserved.

Starting server with the following options:
        Persistent Mode            : Disabled
        LogFile Name               : C:\Users\markt\STM32CubeIDE\workspace_1.16.1\PCB_Test\Debug\st-link_gdbserver_log.txt
        Logging Level              : 31
        Listen Port Number         : 61234
        Status Refresh Delay       : 15s
        Verbose Mode               : Enabled
        SWD Debug                  : Enabled
        InitWhile                  : Enabled

COM frequency = 4000 kHz
Target connection mode: Under reset
Target connection failed
COM frequency = 1800 kHz
Target connection mode: Under reset
Target connection failed
COM frequency = 950 kHz
Target connection mode: Under reset
Target connection failed
COM frequency = 480 kHz
Target connection mode: Under reset
Target connection failed
COM frequency = 240 kHz
Target connection mode: Under reset
Target connection failed
COM frequency = 125 kHz
Target connection mode: Under reset
Target connection failed
COM frequency = 100 kHz
Target connection mode: Under reset
Target connection failed
COM frequency = 50 kHz
Target connection mode: Under reset
Target connection failed
COM frequency = 25 kHz
Target connection mode: Under reset
Target connection failed
COM frequency = 5 kHz
Target connection mode: Under reset
Target connection failed
Target no device found

Error in initializing ST-LINK device.
Reason: No device found on target.

Additionally, when I tried connecting using STM32CUBEProgrammer, I received this message:

 19:58:54 : UR connection mode is defined with the HWrst reset mode
  19:58:54 : ST-LINK SN  : B55B5A1A000000006053F001
  19:58:54 : ST-LINK FW  : V2J45S7
  19:58:54 : Board       : --
  19:58:54 : Voltage     : 3.30V
  19:58:54 : Error: Unable to get core ID
  19:58:54 : Error: No STM32 target found! If your product embeds Debug Authentication, please perform a discovery using Debug Authentication

I'm using an ST-Link V2 connected to a custom board via SWD. This is my first custom STM32 design, and here is the schematic:

I have no idea where the issue might be. Any help would be greatly appreciated!

Thank you in advance for your assistance!

[TDK]

Schematic looks okay.

• Verify part orientation. When text is oriented normally from left to right, pin 1 is on bottom left.
• Verify VCAP voltages. Should be 1.2V.
• Verify other power pins.
• Verify SWD connections.

If you're using a knock-off programmer, note that it might just not work, especially with STM32CubeIDE. Use STM32CubeProgrammer until you can "connect" successfully--it is typically more robust.

[AScha.3]

Hi,

...and if your st-link is a stick (= clone), set connect : software reset (the "stick" has no reset output!)

And try with CubeProgrammer first (more tolerant with clones...).

[MarktenKlooster]

This is the st-link that I am using and how it is wired:

I'm unable to find the setting you mentioned.

Could you please provide more details?

[AScha.3]

in Cubeprogrammer:

reset mode -> software

+

in IDE -> debug configuration -> same...