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Zephyr project on STM32

   Zephyr Workbench, a VSCode extension to manage Zephyr on STM32.
It enables users to easily create, develop, and debug Zephyr applications.
Main features:
  • Install host dependencies.
  • Import toolchain and SDK.
  • Create, configure, build and manage apps.
  • Debug STM32.
You can directly download it from the VSCode marketplace
For more details, visit the Zephyr Workbench

System Workbench for STM32

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Flashing without connecting NRST

Posted by skoehler on 2019-05-19 20:43

Hi,

why is it necessary to connect the NRST of my MCU to the ST-Link? I have no problem connecting to the target with the ST-Link utility but I do have problem flashing/debugging when I use SW4STM32. Well, problems is an understatement: it’s impossible.

My target is the infamous STM32 Blue Pill (STM32F103C8T6). The reset pin is exposed, but on the 4-pin SWD connector (has gnd, swio, swclk, and 3.3V).

The ST-Link utility is clearly able to reset/half the target via some SWD commands, it seems. I believe openocd supports that as well. See http://openocd.org/doc/html/Reset-Configuration.htmlQuestion

Has somebody got a clue whether it’s working? If so, where would I add the openocd options to switch from hardware reset (via NRST) to emulation reset (via SWD commands)?

Reads: 9147
Link
Posted by roland25 on 2019-05-19 21:28
In debugger configuration, Debugger tab, Configuration Script, Mode Setup, Reset mode combo box, select “Software system reset”
Link
Posted by skoehler on 2019-05-20 00:53
That works like a charm. That setting is somewhat hidden though.
Link

 

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