add STM32G031FxPx (and STM32G031Y8Yx, STM32G041F6Px, STM32G041F8Px STM32G041Y8Yx)

[olikraus]

This PR adds STM32G031FxPx devices to the boards.txt file.

The STM32G031FxPx TSSOP20 variant was missing. I think this is a nice and powerful variant for small DIY projects. More pins than the SO8, but easier to solder compared to the LQFP variants.

[ABOSTM]

@olikraus,
Thanks for this PR.
Generally we follow this wiki to add new variant: https://github.com/stm32duino/wiki/wiki/Add-a-new-variant-%28board%29
There there are different things missing in your PR:

• instead of adding only 3 new generic, (G031F4Px, G031F6Px and G031F8Px) you can copy/paste boards_entry.txt (which contains 7 new generic variant)
• you need to add the new variants to README.md
• for the new variant, we need a linker script : ldscript.ld
  and a Generic System Clock configuration.

[olikraus]

Oh, nice, I didn't know that wiki page. I will go through the wiki and try to provide missing information.

[olikraus]

ok, I fixed boards.txt and added ldscript.ld.

instead of adding only 3 new generic, (G031F4Px, G031F6Px and G031F8Px) you can copy/paste boards_entry.txt (which contains 7 new generic variant

Done for G031FxPx

you need to add the new variants to README.md

Done

for the new variant, we need a linker script : ldscript.ld

Done

Generic System Clock configuration

I think the default clock configuration was already there and is fine from my point of view. At least no changes required.

I also did a successful test with my own STM32G031F8Px board.

Note: cores_config_ci.json and cores_config.json not yet updated.

[olikraus]

To be consistent with J and K variants I took over the clock setup from K variant. If I understood the code correctly the PLL output will be 64 MHz.

Test ok on my own board.

[ABOSTM]

@olikraus
Thanks for this update.
To be complete, you could add the missing board sharing the same directory

[olikraus]

You mean the G041F and G041Y variants?
Will do so...

[ABOSTM]

Sorry, part of my comment did come up.
I mean add all the variants sharing the same directory. So yes G031Y8Yx, G041F6Px, G041F8Px G041Y8Yx
you can copy/paste boards_entry.txt (which contains 7 new generic variant)
Don't forget to update README.md accordingly.
Thanks

[olikraus]

you can copy/paste boards_entry.txt (which contains 7 new generic variant)

Done

Don't forget to update README.md accordingly.

Done

[ABOSTM]

@olikraus thanks.