ESP32-S3 may be the worse model to run Rust on due to the XTensa cores that makes the toolchain unnecessarily complicated.
The newer model, C3, C6, C5 all have RSIC-V cores which make it a dream to run Rust (basically: rustup target add riscv32imac-unknown-none-elf).
Here is a good introduction: https://kerkour.com/introduction-to-embedded-development-wit...
> ESP32-S3 may be the worse model to run Rust on due to the XTensa cores that makes the toolchain unnecessarily complicated.
Indeed. ESP32-S31 appears to target exactly this concern in the popular "S3" segment. It's basically a updated S3, with faster and newer wireless and memory, and it adopts a pair of RISC-V cores in place of the Xtensa cores.