book VS bluer

It actually does. You can modify Rust to run without stdlib, reducing its size significantly. There are also tons of tricks to make this work really well so it's very close to C performance.

https://esp-rs.github.io/book/

To get started with environments and hardware the Rust on ESP Book provides a great starting point. However, if using Wokwi, much of that is not needed.

Good places to get started with std Rust on ESP include the Rust on ESP book, Embedded Rust on Espressif by Ferrous Systems. There's also the Awesome ESP Rust GitHub repository that contains a lot of useful material and project examples.

I'm not new to microcontrollers or Rust, but I am new to trying Rust on an ESP32. I have followed the Rust on ESP book, and I have everything compiling and flashing fine, at least with a very basic "Hello, World!" printed to the serial console.

Familiarity with the basic template for creating embedded applications in Rust for the ESP32 (The Rust on ESP Book is a good resource).

For environment setup guidelines it would be better to reference the book, although we are working on a great improvement of it: https://github.com/esp-rs/book/issues/59

I don't know the author's code but mine was at the same level as home assistant's. I believe I was using Bluer (BlueZ) [1] and afaik the problem is that the dependency needs an armv7 version of DBUS when it compiles which my non-armv7 laptop did not provide.

If I do the home assistant route and just copy my source code over to the raspi and build the binary there it all compiles+runs fine. Except for the part where I can't compile it locally and so I don't know of a build issue until its been transferred + built.

[1]: https://github.com/bluez/bluer

Yeah, I already tried that without no success. I leave the discussion link for more details.

Yes it would be on github if it gets anywhere, but I've got several other projects on the go at the moment. bluer, with the associated bluer-tools is very good for Bluetooth, from the bits I've played with.