Initial commit

Author: creativcoder

.cargo/config.toml

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+[build]
+target = "avr-atmega328p.json"
+
+[unstable]
+build-std = ["core"]

.gitignore

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+/target

Cargo.lock

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+[package]
+name = "rust-arduino-blink"
+version = "0.1.0"
+authors = ["creativcoder <[email protected]>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+panic-halt = "0.2.0"
+
+[dependencies.arduino-uno]
+git = "https://github.com/Rahix/avr-hal"
+
+# Configure the build for minimal size
+[profile.dev]
+panic = "abort"
+lto = true
+opt-level = "s"
+
+[profile.release]
+panic = "abort"
+codegen-units = 1
+debug = true
+lto = true
+opt-level = "s"

Cargo.toml

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+MIT License
+
+Copyright (c) 2020 creativcoder
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

LICENSE

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+
+## Blink program in Rust for Arduino Uno
+
+![Rust-on-arduino](assets/rust-arduino.gif)
+
+Accompanying blog post: https://creativcoder.dev/rust-on-arduino-uno
+
+## Getting up and running:
+
+```bash
+./flash.sh target/avr-atmega328p/debug/rust-arduino-blink.elf
+```

README.md

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+{
+    "llvm-target": "avr-unknown-unknown",
+    "cpu": "atmega328p",
+    "target-endian": "little",
+    "target-pointer-width": "16",
+    "target-c-int-width": "16",
+    "os": "unknown",
+    "target-env": "",
+    "target-vendor": "unknown",
+    "arch": "avr",
+    "data-layout": "e-P1-p:16:8-i8:8-i16:8-i32:8-i64:8-f32:8-f64:8-n8-a:8",
+  
+    "executables": true,
+  
+    "linker": "avr-gcc",
+    "linker-flavor": "gcc",
+    "pre-link-args": {
+      "gcc": ["-Os", "-mmcu=atmega328p"]
+    },
+    "exe-suffix": ".elf",
+    "post-link-args": {
+      "gcc": ["-Wl,--gc-sections"]
+    },
+  
+    "singlethread": false,
+    "no-builtins": false,
+  
+    "no-default-libraries": false,
+  
+    "eh-frame-header": false
+  }
+  

assets/rust-arduino.gif

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+#! /usr/bin/zsh
+
+set -e
+
+if [ "$1" = "--help" ] || [ "$1" = "-h" ]; then
+    echo "usage: $0 <path-to-binary.elf>" >&2
+    exit 1
+fi
+
+if [ "$#" -lt 1 ]; then
+    echo "$0: Expecting a .elf file" >&2
+    exit 1
+fi
+
+sudo -u $USER cargo build
+avrdude -q -C/etc/avrdude.conf -patmega328p -carduino -P/dev/ttyACM0 -D "-Uflash:w:$1:e"

avr-atmega328p.json

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+// main.rs
+
+#![no_std]
+#![no_main]
+
+extern crate panic_halt;
+use arduino_uno::prelude::*;
+use arduino_uno::hal::port::portb::PB5;
+use arduino_uno::hal::port::mode::Output;
+
+fn stutter_blink(led: &mut PB5<Output>, times: usize) {
+    (0..times).take(times).map(|i| i * 10).for_each(|i| {
+        led.toggle().void_unwrap();
+        arduino_uno::delay_ms(i as u16);
+    });
+}
+
+#[arduino_uno::entry]
+fn main() -> ! {
+    let peripherals = arduino_uno::Peripherals::take().unwrap();
+
+    let mut pins = arduino_uno::Pins::new(
+        peripherals.PORTB,
+        peripherals.PORTC,
+        peripherals.PORTD,
+    );
+
+    let mut led = pins.d13.into_output(&mut pins.ddr);
+    
+    loop {
+        stutter_blink(&mut led, 25);
+    }
+}