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From Zero to main(): Bare metal Rust
by James MunnsSince 2015, Rust has been redefining what it means to combine the best-in-class aspects of performance, correctness, and developer convenience into one language, without compromise. In this post, we’ll bootstrap a Rust environment on a Cortex-M microcontroller from scratch, and explain a few of the language concepts you might not have seen before.
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From Zero to main(): Bootstrapping libc with Newlib
In this post, we will add RedHat’s Newlib to our firmware and highlight some of its features. We will implement syscalls, learn about constructors, and finally print out “Hello, World”! We will also learn how to replace parts or all of the standard C library.
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From Zero to main(): How to Write a Bootloader from Scratch
In this post, we will explain why you may want a bootloader, how to implement one, and cover a few advanced techniques you may use to make your bootloader more useful.
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From Zero to main(): Demystifying Firmware Linker Scripts
Last time, we talked about bootstrapping a C environment on an MCU before invoking our
mainfunction. One thing we took for granted was the fact that functions and data end up in the right place in our binary. Today, we’re going to dig into how that happens by learning about memory regions and linker scripts. -
From Zero to main(): Bare metal C
Throughout the Zero to main() series of posts, we demystify what happens between when power is applied and your main function is called. In the process, we’ll learn how to bootstrap a C environment, implement a bootloader, relocate code, and more!
Interrupt
by Memfault
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