Communication of STM32g030c6t6 using stlink v3 set

[ARamt.1]

I am working on a project and plan to use STM32g030c6t6 as micro-controller. I am using STLINK v3 set as debugger for uploading the program. I am unaware of how will be the connection of the debugger and controller as I want to communicate through UART

[KnarfB]

The same pin cannot be used simultaneously for uart and debug.

But, the data sheet has a footnote on some pins: "Upon reset, these pins are configured as SW debug alternate functions...".

Meaning: The UART pin function is done by your firmware, *after* reset. In the short time before that, SWD is available, so you can still connect to the MCU under reset, e.g. for flashing or loading a special debug firmware etc... Note that this use of SWD depends also on your board design (pull-ups/downs,...), so read the data sheet carefully and test on a prototype.

If you can avoid that dual pin use: I would avoid it. Look for alternate UART pin function mappings.

hth

KnarfB

[ARamt.1]

Is there any other option to communicate other than jtag?

[KnarfB]

I recommend going through "STM32 microcontroller debug toolbox" document.