Arduino for STM32

Emulated eeprom always uses 2 sectors of flash memory. It won't work for long with just one.
In case of your MCU it should use sectors 2 and 3: https://www.st.com/resource/en/applicat ... ronics.pdf

There's an example in STM examples how to use timers in input capture mode.
File->Examples->STM32duino Examples->Peripherals->HardwareTimer

If you're using STM core (without MCU dedicated libraries) code should work with any STM32 MCU. Only difference that you may have is different pins may be assigned to peripherals.

Composite Adding you MCU/board you don't have to configure anything. Some defaults just may need to be set differently.

For example, Serial is usually assigned to PA0/PA1 (for not added MCUs), whereas in STM32duino it usually is assigned to PA9/PA10.
For MCUs with LPUART (like H533RET) you may ...

Composite All GPIO mappings are done for almost every MCU in STM lineup. For most MCUs you only need to add clock config and sometimes do some changes in default pin assignments (default Serial, IIC, SPI, etc). There are also entries for boards.txt for generic variants, just need to copy them ...

You can add it yourself and then open PR on github to include it in next release:
https://github.com/stm32duino/Arduino_C ... 28board%29

@Jimbo1326 yes. Latest version 2.3.4

There must something with your PC or windows setup.
I have bit faster PC (Ryzen 5 5500 with nvme SSD) and it takes about 30 seconds to do first compile and 7s to recompile.

"Bouar part number" it's just to automate some hardware setups like clocks (if board has external oscillator or uses internal), default pins (like buttons, LEDs, default SPI, IIC, etc).
"Generic" variants always use internal oscillator and usually do not have buttons and LEDs defined. So it will ...

You can debug directly in Arduino IDE.