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Tsh.1
Tsh.1
Associate
Jan 16, 2021 8:54 AM UTC
Solved

Got error like ST-LINK error (DEV_TARGET_NOT_HALTED) when to flash the program.

Hi,

I was trying to disable Tzen in my nucleo-l55ze-q (stm32l55), but before disabling i forgot to flash toggle gpio programmer into board, and tried to set RDP to 55 and i clicked apply,

From that moment it is not able to detect the STlink!..

please give me any suggestions .

Thanks and regards

Teju S H

This topic has been closed for replies.
Houda GHABRI
Houda GHABRIBest answer
ST Employee
Jan 21, 2021 7:21 PM UTC

Hi @Tsh.1​ 

This is an expected situation in this case.

The tool explicitly give a recommendation to flash a valid secure code jumping to non secure code =)

The only way to recover the board is to boot on RSS : BOOT0 pin PH3 to VDD (hope you are using boot selection through Boot 0).

Try this please and tell me if it solves your issue.

Houda-

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6 replies

Uwe Bonnes
Uwe Bonnes
Chief
Jan 17, 2021 6:53 PM UTC

Try to connect under reset or get the device into bootloader mode and then connect the debugger.

Tsh.1
Tsh.1Author
Associate
Jan 18, 2021 2:24 AM UTC

Hi @Uwe Bonnes​ 

i have tried connecting under reset it doesnt worked .....

and now i have connected boot0 pin to vdd and now i am able to flash the bin files as connected to hotplug......

but i am not getting any data in serial port....

can erasing chip will slove this..??

Please suggest me regarding this..

Thanks and Regards

Teju S H

Houda GHABRI
Houda GHABRIBest answer
ST Employee
Jan 21, 2021 7:21 PM UTC

Hi @Tsh.1​ 

This is an expected situation in this case.

The tool explicitly give a recommendation to flash a valid secure code jumping to non secure code =)

The only way to recover the board is to boot on RSS : BOOT0 pin PH3 to VDD (hope you are using boot selection through Boot 0).

Try this please and tell me if it solves your issue.

Houda-

    MSher.1
    MSher.1
    Associate II
    Aug 2, 2021 7:04 PM UTC

    I am facing the same situation. Can you give some more detail about this boot process? I ensured the boot option was checked prior to making the change to RDP.

    Edit: I found the relevant section in the manual for the kit, section 6.4.2 Boot from RSS

    Hueli.1
    Hueli.1
    Associate III
    Aug 12, 2022 1:02 PM UTC

    I had the same issue after flashing a corrupted build.

    The solution is to select Hardware reset under Reset mode in STM32Cube Programmer0693W00000QNa8kQAD.png

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