Having issue with STlink_v3minie debugger

[Mehul]

Hi all,

I am trying to connect to the processor STM32L431CCT6TR via SWD connection, but it says no device found.  Blowe, I have pasted the message and debugger setup information.  It is able to find the debugger. I have also attached the schematic if 

I appreciate the help.

Thanks!

STMicroelectronics ST-LINK GDB server. Version 7.4.0

Copyright (c) 2023, STMicroelectronics. All rights reserved.

Starting server with the following options:

Persistent Mode : Disabled

Logging Level : 1

Listen Port Number : 61234

Status Refresh Delay : 15s

Verbose Mode : Disabled

SWD Debug : Enabled

InitWhile : Enabled

Target no device found

Error in initializing ST-LINK device.

Reason: No device found on target.

[Imen.D]

Hello @Mehul and Welcome to the Community :)

I advise you to connect under reset mode.

Check boot pin, NRST and SWD signal.

Also, make sure to upgrade the firmware.

Imen

[Mehul]

Hi Imen,

Thanks for the response. I have pull-down on boot.  I have NRST is pulled high.  I have upgraded the firmware on the programmer.

Moreover, I tried connecting the programmer to discovery board, but I was not able to read the memory with ST utility tool.  

Here is the connection that I had used.   I had removed the jumper, so I can communicate.

Thanks!