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Omar Hiari

Jul 4, 2022

STM32F4 Embedded Rust at the HAL: Button Controlled Blinking by Timer Polling

This blog post is the second one of a multi-part series of posts where I explore various peripherals in the STM32F401RE microcontroller using embedded Rust at the HAL level. Please be aware that certain concepts in newer posts could depend on concept...

blog.theembeddedrustacean.com11 min read

#rust #iot #embedded #tutorial

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Николаев Василий

Jun 6, 2025

I can feel I'm loosing something important in my life while evaluating 2001 millis. Why is it not to use del_var - 42.millis()? Then we will have mut del_var = 2042.millis()

Hello Николаев Василий, sure you could. Though this would imply the duration of how often you check for the button to get pressed. In the code, it's being checked every 1 ms if the button is pressed. With your suggestion, it's every 42 milliseconds. It only has to be often enough to not miss a press event since we are polling.

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Omar Hiari

Jun 23, 2025

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STM32F4 Embedded Rust at the HAL: Button Controlled Blinking by Timer Polling

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