I am starting with this tool and have problems to get it running. I have now two Nucleo-64 STM32L476RGT boards. But the basic is not working. When I run the application in its most basic form the "Debugger is shutting down"directly

[JNiva.1]

I perform the following steps:

1 Load the board using the board sellector

2 On the pinout view activating a PA8 pin and reseting that PIn to its defaults

3 Generate code by "save"

4 Build the project "Build project"

5 Run "Debug As

STMicroelectronics ST-LINK GDB server. Version 5.8.0

Copyright (c) 2020, 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

Waiting for debugger connection...

Debugger connected

Debugger connection lost.

Shutting down...

I can not find the problem!

[KnarfB]

Don't know what "2 On the pinout view activating a PA8 pin and reseting that PIn to its defaults" is good for, but a Nucleo board "hello world"/blinky works reliably as shown in the videos. Check you USB, change USB port/cable if possible and try to connect/read/write the board from another tool like STM32CubeProgrammer.

hth

KnarfB

[MM..1]

Maybe or this is standart rule, your NUCLEO stlink fw need upgrade, download stlink007 utility with latest fw and use it.

[JNiva.1]

Thanks I will try the two options

John

[Tesla DeLorean]

Check if the default in the tool is to disable debugging.

You'd have thought that would yield a warning tool side, but ...​

[JNiva.1]

Hai

1-I have orded a new USB kabel and waiting for the delivery.

2-I have installed the Cube program tool

I am new to this tool but it did not connect well, I do now beter understand the tool

What I see in the log is a DEV_CONNECT_ERR

I have updated the firmware but still have on line 3 the 18:01:39 : ST-LINK error (DEV_CONNECT_ERR). I do not know exactly what the meaning is.

18:01:20 : STM32CubeProgrammer API v 2.6.0

18:01:39 : Warning: Device changed, refreshing...

18:01:39 : ST-LINK error (DEV_CONNECT_ERR)

18:01:39 : ST-LINK SN : 066DFF544856846687080823

18:01:39 : ST-LINK FW : V2J37M26

18:01:39 : Board    : NUCLEO-L476RG

18:01:39 : Voltage   : 3.26V

18:01:39 : SWD freq  : 4000 KHz

18:01:39 : Connect mode: Normal

18:01:39 : Reset mode : Software reset

18:01:39 : Device ID  : 0x415

18:01:39 : Revision ID : Rev 4

18:01:39 : UPLOADING OPTION BYTES DATA ...

18:01:39 :  Bank     : 0x00

18:01:39 :  Address    : 0x40022020

18:01:39 :  Size     : 20 Bytes

18:01:39 :  Bank     : 0x01

18:01:39 :  Address    : 0x40022044

18:01:39 :  Size     : 16 Bytes

18:01:39 : UPLOADING ...

18:01:39 :  Size     : 1024 Bytes

18:01:39 :  Address    : 0x8000000

18:01:39 : Read progress:

18:01:39 : Data read successfully

18:01:39 : Time elapsed during the read operation is: 00:00:00.007

I have downloaded a example Beacon. That example is working : The Debuger is starting and working Download verified successfully!

When I start my basic example created yesterday and try to build the code and run the debugger I recieve the message : No ST_Link detected. But the USB kabel is already correct connected in the board.

I perform the following steps:

1 Load the board using the board sellector

2 On the pinout view activating a PA8 pin and reseting that PIn to its defaults

3 Generate code by "save"

4 Build the project "Build project"

5 Run "Debug As

Removing the USB kabel and reconnecting makes the debuger start correctly!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Ir seems that it is working now, I do not know how it is solved.

Thanks for helping!!!!!!!!!!!!!!!!!!!!!!!!!!!!