Arduino for STM32

Yes you can. note that next release 2.0.0 will ease board addition. Wiki will be updated to explains how to create a new variant. In few words, all the L431xx variants will exists, only the linker script, a config clock and the boards entry have to be added. Thanks for your reply, those are good ne...

Yes, adding a board variant is explained in the stm32duino / wiki I'm working in a university project and I want to design a board for a LoRa node using a STM32 microcontroller but the STM32L431 is not supported in the current core version (1.9), so would it be possible to use this MCU with STM32dui...