System Workbench for STM32

Hi,

To enable SWD debug on STM32F1 devices, you need to configure in the cubeMx the “Pinout -> SYS -> Debug -> Serial Wire”.
Have you done that ?

As you have no more access to the target mcu with SW4STM32, you will need to program the controller once in a different way, for example with ST-LINK Utility.

If you haven't the reset connected from the STLink, you will need to use the "software reset" in the debug configuration options.

Rgds,
Laurent