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
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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: