Rust with arduino

.gitignore

Cargo.lock
target/

Cargo.toml

[package]
name = "blink"
version = "0.1.0"
authors = ["chodkows"]
edition = '2018'

[dependencies]
ruduino = {  git = "https://github.com/avr-rust/ruduino", branch = "master" }

[profile.release]
lto = true

.cargo/config

[build]
target = "avr-atmega328p.json"

[unstable]
build-std = ["core"]

# Cargo versions before 2021-02-23 won't recognize this: https://github.com/rust-lang/cargo/pull/9175
[env]
AVR_CPU_FREQUENCY_HZ = "16_000_000"

avr-atmega328p.json

{
  "arch": "avr",
  "cpu": "atmega328p",
  "data-layout": "e-P1-p:16:8-i8:8-i16:8-i32:8-i64:8-f32:8-f64:8-n8-a:8",
  "env": "",
  "executables": true,
  "linker": "avr-gcc",
  "linker-flavor": "gcc",
  "linker-is-gnu": true,
  "llvm-target": "avr-unknown-unknown",
  "os": "unknown",
  "position-independent-executables": false,
  "exe-suffix": ".elf",
  "eh-frame-header": false,
  "pre-link-args": {
    "gcc": ["-mmcu=atmega328p"]
  },
  "late-link-args": {
    "gcc": ["-lgcc", "-lc"]
  },
  "target-c-int-width": "16",
  "target-endian": "little",
  "target-pointer-width": "16",
  "vendor": "unknown"
}

./src/main.rs

#![no_std]
#![no_main]

use ruduino::Pin;
use ruduino::cores::current::{port};

#[no_mangle]
pub extern fn main() {
    port::D6::set_output();
    port::D6::set_high();

    port::D7::set_output();
    port::B0::set_output();

    loop {
        port::D7::set_low();
        port::B0::set_high();
        ruduino::delay::delay_ms(3000);
        port::D7::set_high();
        port::B0::set_low();
        ruduino::delay::delay_ms(1000);
    }
}