Connect Under Reset (NRST) in TrueStudio using SWD

[pawcuu]

Hi all,

in my project I reconfigure SWD pins to work as inputs and therefore I can't debug/upload new firmware using software system reset.

And here's my question - how to modify Startup Script (attachment) so that ST-LINK/V2 would upload (or debug) new software using NRST pin (Connect Under Reset in STM32 ST-LINK Utility works like a charm)?

Thanks!

[TDK]

In CubeIDE, the setting is in the run/debug configuration options. TrueSTUDIO is NRND, but is probably similar.

[pawcuu]

Thanks for answer, however such option is unavailable in TrueSTUDIO.

[TDK]

Might be time to update to a supported IDE.

Or you could use the STM32CubeProgrammer CLI to load a new program by adding it as an external tool.

[Pavel A.]

It's time to upgrade.

You can use the Atollic toolchain for compatibility, and the new debugger.

[pawcuu]

For now on I would like to stick with TrueStudio.

Could you share how to do so with STM32CubieProgrammer CLI?

[Nikita91]

It seems to me that TrueSTUDIO uses Under Reset:

      -------------------------------------------------------------------
                       STM32CubeProgrammer v1.3.0                  
      -------------------------------------------------------------------
 
Log output file:   C:\Users\Moi\AppData\Local\Temp\STM32CubeProgrammer_a13108.log
ST-LINK SN  : 0670FF575056716587093335
ST-LINK FW  : V2J31M21
Voltage     : 3.25V
SWD freq    : 4000 KHz
Connect mode: Under Reset                     <-------------
Reset mode  : Hardware reset
Device ID   : 0x431
Device name : STM32F411xC/E
Device type : MCU
Device CPU  : Cortex-M4
 

[Pavel A.]

Maybe much simpler is to use the old good ST-Link utility to flash the update.

Configure it to connect under reset. It supports all STM32s known to Atollic.