Skip to main content
Ebun.1
Ebun.1
Senior
March 20, 2020
Question

Debug Configuration

  • March 20, 2020
  • 2 replies
  • 2992 views

Hello

Debug Cofiguration-Debugger-Reset behavior

There are None, Software system reset, Connect under reset

Please explain each behavior.

If you select Software system reset or Connect under reset, an error may occur.

Thank you.

This topic has been closed for replies.

2 replies

LaurentL
LaurentL
ST Employee
March 23, 2020

Hi,

The STLink will connect to the mcu in SWD or JTAG.

Connect under reset : STLink issue a Reset and while Reset is active, it will connect to the target.

Software system reset : STLink doesn't use the Reset pin, it will connect to the target and then write in the system register to reset the mcu (via software).

None : STLink doesn't use the Reset pin and connect to the target.

So, it also depends on your board hardware config, if you have connected the STLink reset pin from SWD/JTAG connector to the target mcu reset pin.

Rgds,

Laurent

To give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.
    Ebun.1
    Ebun.1Author
    Senior
    March 24, 2020

    Thank you for your reply.

    If the Type is set to anything other than None, the following error will appear once every two times.

    Debugger connected

        -------------------------------------------------- -----------------

                STM32CubeProgrammer v2.4.0

        -------------------------------------------------- -----------------

    ST-LINK SN: 066AFF353138524E43065451

    ST-LINK FW: V2J36M26

    Voltage: 3.26V

    Error: ST-LINK error (DEV_TARGET_NOT_HALTED)

    Encountered Error when opening C: \ STM32 \ STM32CubeIDE_1.3.0 \ STM32CubeIDE \ plugins \ com.st.stm32cube.ide.mcu.externaltools.cubeprogrammer.win32_1.3.0.202002181050 \ tools \ bin \ STM32_Programmer_CLI.exe

    Error in STM32CubeProgrammer

    Debugger connection lost.

    Shutting down ...

    When do you get this error?

    LaurentL
    LaurentL
    ST Employee
    March 24, 2020

    Hi,

    Did you connect the Reset line from STLink to the Mcu ?

    The error you get is that the mcu can't be halted (to program the flash, the mcu needs to be halted).

    Rgds,

    Laurent

    To give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.
    Ebun.1
    Ebun.1Author
    Senior
    March 24, 2020

    Thank you for helping.

    The reset signal is connected because it is a Nucleo-F401RE board.

    A location other than the interrupt vector in sector 0 of the flash is used as the data area.

    Does this cause any problems?

    Thank you very much.

    Terms & ConditionsAccessibility statement