stm32programmer is not connecting with device(STM32G0)

[Dthum.1]

Hello forum,

we are facing a very strange issue with the STLINK-V3MINIE debugger.

Controller: STM32G0B1CE series
STMprogrammer version: 2.14.0
Debugger:  STLINK-V3MINIE

we are trying to connect the device(controller) with the stm32programmer application using STLINK-V3MINIE debugger but every time it is showing the error message as shown below.

Error: No STM32 target found! if your product embeds Debug Authentication, please perform a discovery using Debug Authentication. 

 we tried on two devices (STM32G0B1CE) but it is not working at all. then we tried on another controller (STM32H7xx) and it is working every time with this device.

Note: STLINK/ V2  debugger is working fine with both the controller(STM32G0 controller and STM32H7xx)

can someone help us out on this issue? we need some input ASAP on this issue.
Thanks. 

[Foued_KH]

Hello @Dthum.1 , 

Make sure that your STLink firmware is upgraded. 

Try "Connect under reset" mode.

I advise you to refer to this FAQ: How to solve debugger connection issues.

Foued

[Tesla DeLorean]

The reported Target Voltage is very low.

If it can't connect start looking at reasons the board design is not viable. Power issues, analogue supply connections, state of NRST pins, part orientation.

Look at other ways to get signs of life, like the system boot loader, and responsiveness to a serial connection.

[liaifat85]

You can also try the suggested solutions in this thread.

https://stackoverflow.com/questions/61088116/how-to-fix-stm32cubeprogrammer-no-stm32-target-found