FYI:
The name STM32duino is incorrect, ambiguous and confusing.
The correct name of this Arduino core is “Arduino Core STM32”.
See my following post in the Big STM32 topic for more information and below quote from this post.
The world of (names of, supported functionality, compatibility of and references to different) Arduino cores for STM32 is not transparant and confusing.
Much different than Arduino for AVR, SAM(D) and ESP32.
In the Arduino IDE it is currently listed as “STM32 MCU based boards by STMicroelectronics”.
In PlatformIO it is called “framework-arduinoststm32” (as part of the platform “ST STM32”). Until recent PlatformIO used it’s own implementation of Arduino support for STM32 instead of ‘Arduino Core STM32’. I’m not sure whether that has changed but I assume not.
There is no consistency in naming of different Arduino cores for STM32 (and references to those cores) which can be confusing. My advise is to use the offical name of the Arduino cores. In this case: “Arduino Core STM32”.