esp-template

opinionated bare-metal async Rust template for the ESP32-C3/C6, or about 450 lines of code I was going to write anyway.

portability

this template can be built for both the C3 and C6:

• use just r3 to flash on C3, and just r6 to flash on C6.
• use just b3 to build for C3, and just b6 to build for C6.
• use just c3 to run Clippy for C3, and just c6 to run Clippy for C6.

the Justfile recipes automatically set the required build target and crate features.

Nix

the Nix flake exports 4 outputs: a dev shell, some checks, and 2 packages, one for each chip.

the dev shell contains common utilities for development: the Rust toolchain, cargo-binutils, cargo-bloat, espflash, and just.

building the package generates an ELF binary, which can be converted into a flat firmware image using espflash and flashed onto a module.

due to an issue with espflash, the package doesn't generate this flat firmware image automatically. this will be done in the future, once the issue is resolved.