Migrate "GPDSC" to "STM32CubeIDE" for default code-generation

[ussserrr]

Discussed in #113

^{Originally posted by FrankBau February 5, 2022}
Warning: GPDSC generation will be soon discontinued

With STM32CubeMX 6.4.0 (Nov. 2021) I get a warning on code generation:

  - The support of the “Tool chain / IDE” you have selected will be soon discontinued in further STM32CubeMX version.   If you want to benefit from further STM32CubeMX evolutions for your project,   we advise you to target STM32CubeIDE or other IDE.

What can we do?

KnarfB

[vanbwodonk]

FYI, GPDSC generation already discontinued in version 6.6.1

[mron]

Please update the readme.md! The default toolchain seems to be EWARM. When I use stm32pio I get "It is recommended to use value "Other Toolchains (GPDSC)". This implies to me that, since "Other.." is no longer available, EWARM is OK. It should be "STM32CubeIDE". On an M1 Mac, UART serial out fails.