はじめに ソースコード 解読 Attributes #![deny(unsafe_code)] #![no_main] #![no_std] #[entry] Crates panic_halt cortex_m cortex_m_rt stm32f4xx_hal stm32f4xx_hal::prelude::* crate::hal::{stm32}; main() main() -> ! { loop {} } Peripheralsの取…