Running Rust on embedded systems using no_std can optimize for environments with constrained resources like microcontrollers. Practical steps include ensuring compatibility with WASM and WASI, identifying and adjusting dependencies, marking main code with no_std and alloc, and using Cargo features to toggle std usage. Testing embedded systems often requires tools like QEMU. Despite challenges, Rust’s “if it compiles, it works” philosophy is highly applicable for embedded development.
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Rule 1: Confirm that your project works with WASM WASI and WASM in the Browser.Rule 2: Use target thumbv7m-none-eabi and cargo tree to identify and fix dependencies incompatible with no_std .Rule 3: Mark main (non-test) code no_std and alloc . Replace std:: with core:: and alloc:: .Rule 4: Use Cargo features to let your main code use std optionally for file-related (etc.) functions.Rule 5: Understand why test code always uses the standard library.Rule 6: Create a simple embedded test project. Run it with QEMU.Rule 7: In Cargo.toml , add keywords and categories for WASM and no_std .Rule 8: [Optional] Use preallocated data types to avoid alloc .Rule 9: Add thumbv7m-none-eabi and QEMU to your CI (continuous integration) tests.Sort: