wip: wrote serial logic in rust

This commit is contained in:
Jake Hillion 2022-09-24 16:26:50 +01:00
parent a1f556194e
commit 22d04999bb
9 changed files with 727 additions and 0 deletions

22
.gitignore vendored
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@ -90,3 +90,25 @@ modules.xml
# End of https://www.gitignore.io/api/intellij+all # End of https://www.gitignore.io/api/intellij+all
# Created by https://www.toptal.com/developers/gitignore/api/rust
# Edit at https://www.toptal.com/developers/gitignore?templates=rust
### Rust ###
# Generated by Cargo
# will have compiled files and executables
debug/
target/
# Remove Cargo.lock from gitignore if creating an executable, leave it for libraries
# More information here https://doc.rust-lang.org/cargo/guide/cargo-toml-vs-cargo-lock.html
# These are backup files generated by rustfmt
**/*.rs.bk
# MSVC Windows builds of rustc generate these, which store debugging information
*.pdb
# End of https://www.toptal.com/developers/gitignore/api/rust
# Nix
result

418
Cargo.lock generated Normal file
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@ -0,0 +1,418 @@
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15
Cargo.toml Normal file
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@ -0,0 +1,15 @@
[package]
name = "dancefloor-controller"
version = "0.1.0"
edition = "2021"
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
[dependencies]
log = "0.4"
env_logger = "0.9"
clap = { version = "3", features = ["derive"] }
thiserror = "1"
serial = "0.4"
rgb = "0.8"

82
flake.lock Normal file
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@ -0,0 +1,82 @@
{
"nodes": {
"flake-utils": {
"inputs": {
"systems": "systems"
},
"locked": {
"lastModified": 1692799911,
"narHash": "sha256-3eihraek4qL744EvQXsK1Ha6C3CR7nnT8X2qWap4RNk=",
"owner": "numtide",
"repo": "flake-utils",
"rev": "f9e7cf818399d17d347f847525c5a5a8032e4e44",
"type": "github"
},
"original": {
"owner": "numtide",
"repo": "flake-utils",
"type": "github"
}
},
"nixpkgs": {
"locked": {
"lastModified": 1693985761,
"narHash": "sha256-K5b+7j7Tt3+AqbWkcw+wMeqOAWyCD1MH26FPZyWXpdo=",
"owner": "nixos",
"repo": "nixpkgs",
"rev": "0bffda19b8af722f8069d09d8b6a24594c80b352",
"type": "github"
},
"original": {
"owner": "nixos",
"ref": "nixos-unstable",
"repo": "nixpkgs",
"type": "github"
}
},
"root": {
"inputs": {
"flake-utils": "flake-utils",
"nixpkgs": "nixpkgs",
"treefmt-nix": "treefmt-nix"
}
},
"systems": {
"locked": {
"lastModified": 1681028828,
"narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
"owner": "nix-systems",
"repo": "default",
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"type": "github"
},
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"type": "github"
}
},
"treefmt-nix": {
"inputs": {
"nixpkgs": [
"nixpkgs"
]
},
"locked": {
"lastModified": 1693817438,
"narHash": "sha256-fg3+n4Ky1gCzDtPm0MomMTFw0YkH05Y8ojy5t7bkfHg=",
"owner": "numtide",
"repo": "treefmt-nix",
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"type": "github"
}
}
},
"root": "root",
"version": 7
}

34
flake.nix Normal file
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@ -0,0 +1,34 @@
{
description = "A flake for building dancefloor.";
inputs = {
nixpkgs.url = "github:nixos/nixpkgs/nixos-unstable";
flake-utils.url = "github:numtide/flake-utils";
treefmt-nix.url = "github:numtide/treefmt-nix";
treefmt-nix.inputs.nixpkgs.follows = "nixpkgs";
};
outputs = { self, nixpkgs, flake-utils, treefmt-nix, ... }@inputs:
flake-utils.lib.eachDefaultSystem (system:
let
pkgs = nixpkgs.legacyPackages.${system};
cargoToml = builtins.fromTOML (builtins.readFile ./Cargo.toml);
treefmtEval = treefmt-nix.lib.evalModule pkgs (pkgs: {
projectRootFile = "flake.nix";
programs.rustfmt.enable = true;
programs.nixfmt.enable = true;
});
in {
packages.default = pkgs.rustPlatform.buildRustPackage {
inherit (cargoToml.package) name version;
src = ./.;
cargoLock.lockFile = ./Cargo.lock;
};
formatter = treefmtEval.config.build.wrapper;
checks.formatting = treefmtEval.config.build.check self;
});
}

7
src/error.rs Normal file
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@ -0,0 +1,7 @@
use thiserror::Error;
#[derive(Error, Debug)]
pub enum Error {
#[error("serial: {0}")]
Serial(#[from] crate::serial::Error),
}

36
src/main.rs Normal file
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@ -0,0 +1,36 @@
use log::info;
mod error;
mod serial;
use crate::serial::SerialHandler;
use error::Error;
use std::path::PathBuf;
use clap::Parser;
#[derive(Parser, Debug)]
struct Args {
#[clap(short, long, value_parser)]
/// The serial port of the arduino
serial_port: PathBuf,
/// The TCP port to run the API on
#[clap(short = 'p', long, default_value_t = 8080)]
api_port: u16,
}
fn main() -> Result<(), Error> {
env_logger::Builder::from_env(env_logger::Env::default().default_filter_or("info")).init();
let args = Args::parse();
let mut serial = SerialHandler::<6, 5>::new(args.serial_port);
serial.connect()?;
info!("serial connected, starting loop...");
serial.run()?;
Ok(())
}

13
src/serial/error.rs Normal file
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@ -0,0 +1,13 @@
use thiserror::Error;
#[derive(Error, Debug)]
pub enum Error {
#[error("serial: {0}")]
Serial(#[from] serial::Error),
#[error("io: {0}")]
Io(#[from] std::io::Error),
#[error("port not connected")]
NotConnected,
}

100
src/serial/mod.rs Normal file
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@ -0,0 +1,100 @@
use log::info;
use std::sync::{Arc, Mutex};
use std::time::Instant;
mod error;
pub use error::Error;
use std::io::BufWriter;
use std::io::Write;
use std::path::PathBuf;
use rgb::RGB8;
use serial::unix::TTYPort;
pub struct SerialHandler<const WIDTH: usize, const HEIGHT: usize> {
port_path: PathBuf,
grid: Arc<Mutex<[[RGB8; HEIGHT]; WIDTH]>>,
port: Mutex<Option<TTYPort>>,
}
impl<const WIDTH: usize, const HEIGHT: usize> SerialHandler<WIDTH, HEIGHT> {
pub fn new(port: PathBuf) -> Self {
return Self {
port_path: port,
grid: Arc::new(Mutex::new([[RGB8 { r: 0, g: 128, b: 0 }; HEIGHT]; WIDTH])),
port: Mutex::new(None),
};
}
pub fn connect(&mut self) -> Result<(), Error> {
let mut port = self.port.lock().unwrap();
*port = Some(TTYPort::open(&self.port_path)?);
Ok(())
}
pub fn run(&self) -> Result<(), Error> {
loop {
self.draw()?;
}
}
fn draw(&self) -> Result<(), Error> {
let mut port = self.port.lock().unwrap();
let grid = self.grid.lock().unwrap();
info!("beginning drawing...");
let t1 = Instant::now();
if let Some(p) = &mut *port {
let mut writer = BufWriter::new(p);
for i in 0..WIDTH {
for j in 0..HEIGHT {
let j = if Self::reverse_column(i) {
HEIGHT - j - 1
} else {
j
};
let pixel = grid[i][j];
// pixel & pixel complete character
writer.write(&[pixel.r, pixel.g, pixel.b, 'n' as u8])?;
write!(&mut writer, "{:x}{:x}{:x}n", pixel.r, pixel.g, pixel.b)?;
}
// column termination character
write!(&mut writer, "l")?;
}
// render trigger character
write!(&mut writer, "q")?;
writer.flush()?;
info!(
"drawing finished, time taken: {}ms",
(Instant::now() - t1).as_millis()
);
Ok(())
} else {
Err(Error::NotConnected)
}
}
fn reverse_column(x: usize) -> bool {
// Arduino expects 'down up down down up down' because of physical layout. Correct for this.
match x {
0 => false,
1 => true,
2 => false,
3 => false,
4 => true,
5 => false,
_ => false,
}
}
}