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I had no idea Rust MCU support has come so far, the generated code is indeed very lean. This is fantastic! God I'd love to use this, but ESP8266/ESP32 is where

I had no idea Rust MCU support has come so far, the generated code is indeed very lean. This is fantastic! God I'd love to use this, but ESP8266/ESP32 is where its at right now (at least for me).

kirillkh 10y ago
I take it Rust is not supported on ESP8266 yet?
- kam 10y ago
  Nope, LLVM doesn't have a backend for the Xtensa architecture.
  - DanWaterworth 10y ago
    You could potentially go via C. https://github.com/draperlaboratory/llvm-cbe https://github.com/draperlaboratory/llvm-cbe
    - wyldfire 10y ago
      IIRC the C backend lags LLVM pretty far. Thankfully, rust tries to be compatible among a few different generations of LLVM, so maybe it's feasible.
    - sesutton 10y ago
      Looks dead. No commits for almost 2 years.
    - johncolanduoni 10y ago
      I suspect you'd be much better off with a Rust MIR -> C compiler. Rust's memory and execution model is much closer to C than C is to LLVM.
    - adrianN 10y ago
      The C backend was expelled from LLVM several years ago because it was too buggy and nobody wanted to fix it and since then has hardly been updated. That doesn't seem like a very pleasant route.
- MrBuddyCasino 10y ago
  Some Espressif guy is said to be working on a backend for LLVM, but I wouldn't hold my breath.
axoltl 10y ago
I'd say ESP* is 'it' for a very small set of people. The Cortex M cores are significantly more ubiquitous.
wyldfire 10y ago
I think Aparicio himself is a decent-sized part of that support. BTW, regarding ESP8266 [1] [1] http://hackaday.com/2017/01/04/rust-running-on-the-realtek-rtl8710-esp8266-alternative/ http://hackaday.com/2017/01/04/rust-running-on-the-realtek-r...
- polyfractal 10y ago
  ++ to japaric driving embedded Rustlang development. He's built a lot of the low-level tooling, and many of the articles/tutorials are form him as well. Re: RTL8710... That was me! :) I haven't had much chance to continue hacking on the RTL8710 (we just moved, hobbies are still packed away) but I was pleasantly surprised how easy it was to get up and running. Especially considering how little I know about embedded development, I imagine someone with more knowledge would be a lot more productive.

I had no idea Rust MCU support has come so far, the generated code is indeed very lean. This is fantastic! God I'd love to use this, but ESP8266/ESP32 is where its at right now (at least for me).

kirillkh 10y ago

I take it Rust is not supported on ESP8266 yet?

kam 10y ago
Nope, LLVM doesn't have a backend for the Xtensa architecture.
- DanWaterworth 10y ago
  You could potentially go via C. https://github.com/draperlaboratory/llvm-cbe https://github.com/draperlaboratory/llvm-cbe
  - wyldfire 10y ago
    IIRC the C backend lags LLVM pretty far. Thankfully, rust tries to be compatible among a few different generations of LLVM, so maybe it's feasible.
  - sesutton 10y ago
    Looks dead. No commits for almost 2 years.
  - johncolanduoni 10y ago
    I suspect you'd be much better off with a Rust MIR -> C compiler. Rust's memory and execution model is much closer to C than C is to LLVM.
  - adrianN 10y ago
    The C backend was expelled from LLVM several years ago because it was too buggy and nobody wanted to fix it and since then has hardly been updated. That doesn't seem like a very pleasant route.
MrBuddyCasino 10y ago
Some Espressif guy is said to be working on a backend for LLVM, but I wouldn't hold my breath.

axoltl 10y ago

I'd say ESP* is 'it' for a very small set of people. The Cortex M cores are significantly more ubiquitous.

wyldfire 10y ago

I think Aparicio himself is a decent-sized part of that support. BTW, regarding ESP8266 [1] [1] http://hackaday.com/2017/01/04/rust-running-on-the-realtek-rtl8710-esp8266-alternative/ http://hackaday.com/2017/01/04/rust-running-on-the-realtek-r...

polyfractal 10y ago
++ to japaric driving embedded Rustlang development. He's built a lot of the low-level tooling, and many of the articles/tutorials are form him as well. Re: RTL8710... That was me! :) I haven't had much chance to continue hacking on the RTL8710 (we just moved, hobbies are still packed away) but I was pleasantly surprised how easy it was to get up and running. Especially considering how little I know about embedded development, I imagine someone with more knowledge would be a lot more productive.