rust-no-std

Rust embedded development requires `#![no_std]` to remove standard library dependencies, enabling code execution on bare-metal microcontrollers. This Skill guides you through using the `core` crate and managing limited memory resources effectively without an operating system.

To use a heap in `no_std` Rust, you must implement a custom global allocator by registering a type that implements the `Allocator` trait. This Skill demonstrates how to configure allocators for embedded targets requiring dynamic memory allocation.

The `core` crate provides Rust's most basic types, `alloc` adds heap allocation support, and `std` includes system-level functionality like threading and networking. This Skill clarifies these distinctions for environments lacking a standard library.

Defining a panic handler in `no_std` Rust requires implementing the `#[panic_handler]` attribute function, as the default panic behavior is unavailable without `std`. This Skill provides strategies for creating panic handlers tailored to embedded system constraints.

Yes, you can test `no_std` Rust crates on a host machine by leveraging specific testing strategies that bypass embedded hardware dependencies. This Skill offers methods to validate your bare-metal code locally before deploying to microcontrollers.