When 'Close to the Hardware' Isn't Close Enough

Short summary

This technical deep-dive compares Rust's HAL-based microcontroller programming with raw C register manipulation. The author explores fundamental embedded concepts—memory-mapped I/O, GPIO configuration, timing—on an STM32 board, revealing how much abstraction even 'close-to-hardware' development involves. Perfect for developers learning embedded fundamentals.

• •Rust HAL vs C register access patterns for embedded development
• •Memory-mapped I/O and volatile semantics explained with concrete examples
• •Why even automotive software has more abstraction layers than expected

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