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Naxdy 2024-10-29 13:54:42 +01:00
parent e98d035b04
commit 2213535a3a
Signed by: Naxdy
GPG key ID: CC15075846BCE91B
11 changed files with 670 additions and 0 deletions
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1
.envrc Normal file
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use flake

8
.gitignore vendored Normal file
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/.direnv
/target
/result
/result-*
.vscode
/build

318
Cargo.lock generated Normal file
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# This file is automatically @generated by Cargo.
# It is not intended for manual editing.
version = 3
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name = "wiringop-rs"
version = "0.1.0"
dependencies = [
"bindgen",
"cc",
"glob",
"thiserror",
]

12
Cargo.toml Normal file
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[package]
name = "wiringop-rs"
version = "0.1.0"
edition = "2021"
[dependencies]
thiserror = "1.0.65"
[build-dependencies]
cc = "1.1.31"
glob = "0.3.1"
bindgen = "0.70.1"

54
build.rs Normal file
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use std::{
env::{self, set_current_dir},
fs,
path::PathBuf,
};
fn main() {
fs::create_dir_all("build").expect("could not create build path");
let int_path = PathBuf::from("build")
.canonicalize()
.expect("cannot canonicalize path");
set_current_dir(int_path.clone()).expect("failed to change current directory");
let wiringop_path = PathBuf::from(
env::var("WIRINGOP_PATH").expect("could not retrieve wiringOP path from env"),
)
.canonicalize()
.expect("cannot canonicalize path");
let mut cc = cc::Build::new();
cc.files(
glob::glob(&format!("{}/wiringPi/*.c", wiringop_path.to_str().unwrap()))
.unwrap()
.filter_map(|e| e.ok()),
)
.include(format!("{}/wiringPi/", wiringop_path.to_str().unwrap()));
let target = std::env::var("TARGET").unwrap();
if target.starts_with("aarch64") {
cc.flag("-O2");
}
cc.static_flag(true).compile("wiringop");
let builder = bindgen::Builder::default()
.header("../ffi/wrapper.h")
.detect_include_paths(true);
let bindings = builder
.parse_callbacks(Box::new(bindgen::CargoCallbacks::new()))
.generate()
.expect("unable to generate bindings");
let out_path = PathBuf::from(env::var("OUT_DIR").expect("failed to get out dir for bindings"))
.join("bindings.rs");
bindings
.write_to_file(out_path)
.expect("couldn't write bindings");
}

1
ffi/wrapper.h Normal file
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#include <wiringPi.h>

163
flake.lock Normal file
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{
"nodes": {
"fenix": {
"inputs": {
"nixpkgs": "nixpkgs",
"rust-analyzer-src": "rust-analyzer-src"
},
"locked": {
"lastModified": 1730183653,
"narHash": "sha256-dcJGcoDgNBxTagW8kECwBKsRBA1ZITtQ+p3N6KHg5ps=",
"owner": "nix-community",
"repo": "fenix",
"rev": "dc19afc39af5f5e69fca78ebae59170e61017df8",
"type": "github"
},
"original": {
"owner": "nix-community",
"repo": "fenix",
"type": "github"
}
},
"flake-utils": {
"inputs": {
"systems": "systems"
},
"locked": {
"lastModified": 1726560853,
"narHash": "sha256-X6rJYSESBVr3hBoH0WbKE5KvhPU5bloyZ2L4K60/fPQ=",
"owner": "numtide",
"repo": "flake-utils",
"rev": "c1dfcf08411b08f6b8615f7d8971a2bfa81d5e8a",
"type": "github"
},
"original": {
"owner": "numtide",
"repo": "flake-utils",
"type": "github"
}
},
"naersk": {
"inputs": {
"nixpkgs": "nixpkgs_2"
},
"locked": {
"lastModified": 1721727458,
"narHash": "sha256-r/xppY958gmZ4oTfLiHN0ZGuQ+RSTijDblVgVLFi1mw=",
"owner": "nix-community",
"repo": "naersk",
"rev": "3fb418eaf352498f6b6c30592e3beb63df42ef11",
"type": "github"
},
"original": {
"owner": "nix-community",
"repo": "naersk",
"type": "github"
}
},
"nixpkgs": {
"locked": {
"lastModified": 1729880355,
"narHash": "sha256-RP+OQ6koQQLX5nw0NmcDrzvGL8HDLnyXt/jHhL1jwjM=",
"owner": "nixos",
"repo": "nixpkgs",
"rev": "18536bf04cd71abd345f9579158841376fdd0c5a",
"type": "github"
},
"original": {
"owner": "nixos",
"ref": "nixos-unstable",
"repo": "nixpkgs",
"type": "github"
}
},
"nixpkgs_2": {
"locked": {
"lastModified": 1728888510,
"narHash": "sha256-nsNdSldaAyu6PE3YUA+YQLqUDJh+gRbBooMMekZJwvI=",
"path": "/nix/store/xnjw9gmfmpppdj6bxpw6cfkspc3h6xwl-source",
"rev": "a3c0b3b21515f74fd2665903d4ce6bc4dc81c77c",
"type": "path"
},
"original": {
"id": "nixpkgs",
"type": "indirect"
}
},
"nixpkgs_3": {
"locked": {
"lastModified": 1730137625,
"narHash": "sha256-9z8oOgFZiaguj+bbi3k4QhAD6JabWrnv7fscC/mt0KE=",
"owner": "nixos",
"repo": "nixpkgs",
"rev": "64b80bfb316b57cdb8919a9110ef63393d74382a",
"type": "github"
},
"original": {
"owner": "nixos",
"ref": "nixos-24.05",
"repo": "nixpkgs",
"type": "github"
}
},
"root": {
"inputs": {
"fenix": "fenix",
"flake-utils": "flake-utils",
"naersk": "naersk",
"nixpkgs": "nixpkgs_3",
"wiringop": "wiringop"
}
},
"rust-analyzer-src": {
"flake": false,
"locked": {
"lastModified": 1730123801,
"narHash": "sha256-11FMcPraLSKuvfFF4OzmKWSKE5zXAzFqZOi3k/8/HFg=",
"owner": "rust-lang",
"repo": "rust-analyzer",
"rev": "cf8f950baab30f335917b177536d2d73e0aaa1ae",
"type": "github"
},
"original": {
"owner": "rust-lang",
"ref": "nightly",
"repo": "rust-analyzer",
"type": "github"
}
},
"systems": {
"locked": {
"lastModified": 1681028828,
"narHash": "sha256-Vy1rq5AaRuLzOxct8nz4T6wlgyUR7zLU309k9mBC768=",
"owner": "nix-systems",
"repo": "default",
"rev": "da67096a3b9bf56a91d16901293e51ba5b49a27e",
"type": "github"
},
"original": {
"owner": "nix-systems",
"repo": "default",
"type": "github"
}
},
"wiringop": {
"flake": false,
"locked": {
"lastModified": 1728531008,
"narHash": "sha256-jVfNb0YqaYFd2r5zupy8C1Q1jDAfetPRVKbhtyMBLtg=",
"owner": "orangepi-xunlong",
"repo": "wiringOP",
"rev": "d7bb9d97db265476e6afa8186f2406642e6946be",
"type": "github"
},
"original": {
"owner": "orangepi-xunlong",
"repo": "wiringOP",
"type": "github"
}
}
},
"root": "root",
"version": 7
}

69
flake.nix Normal file
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{
description = "Rust library for interacting with wiringOP (Orange Pi fork of wiringPi)";
inputs = {
nixpkgs.url = "github:nixos/nixpkgs?ref=nixos-24.05";
fenix.url = "github:nix-community/fenix";
naersk.url = "github:nix-community/naersk";
wiringop = {
url = "github:orangepi-xunlong/wiringOP";
flake = false;
};
flake-utils.url = "github:numtide/flake-utils";
};
outputs = { self, nixpkgs, fenix, naersk, wiringop, flake-utils }: flake-utils.lib.eachDefaultSystem (system:
let
target = "aarch64-unknown-linux-gnu";
pkgs = import nixpkgs {
inherit system;
overlays = [
fenix.overlays.default
];
};
devToolchain = with fenix.packages.${system}; combine [
stable.cargo
stable.rustc
stable.clippy
stable.rustfmt
targets.${target}.stable.rust-std
];
CARGO_BUILD_TARGET = target;
CARGO_TARGET_AARCH64_UNKNOWN_LINUX_GNU_LINKER =
let
inherit (pkgs.pkgsCross.aarch64-multiplatform.stdenv) cc;
in
"${cc}/bin/${cc.targetPrefix}cc";
wiringop-headers = pkgs.runCommandLocal "wiringOP-headers" { } ''
mkdir -p $out/include
cp ${wiringop}/wiringPi/*.h $out/include
'';
LIBCLANG_PATH = "${pkgs.llvmPackages_18.clang-unwrapped.lib}/lib";
in
{
devShells.default =
pkgs.mkShell {
nativeBuildInputs = [
devToolchain
pkgs.llvmPackages_18.clang
];
buildInputs = [
wiringop-headers
pkgs.libxcrypt
];
WIRINGOP_PATH = "${wiringop}";
inherit LIBCLANG_PATH CARGO_BUILD_TARGET CARGO_TARGET_AARCH64_UNKNOWN_LINUX_GNU_LINKER;
};
});
}

6
src/ffi.rs Normal file
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#![allow(non_upper_case_globals)]
#![allow(non_camel_case_types)]
#![allow(non_snake_case)]
#![allow(unused)]
include!(concat!(env!("OUT_DIR"), "/bindings.rs"));

36
src/gpio.rs Normal file
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use std::sync::Mutex;
use thiserror::Error;
use crate::ffi;
static PINS_HANDED_OUT: Mutex<Vec<i32>> = Mutex::new(Vec::new());
#[derive(Error, Debug)]
pub enum PinRetrievalError {
#[error("pin {0} has already been retrieved")]
AlreadyRetrieved(i32),
}
pub struct Pin {
pin_id: i32,
}
impl Pin {
pub fn new(pin_id: i32) -> Result<Self, PinRetrievalError> {
let can_retrieve = !PINS_HANDED_OUT
.lock()
.expect("failed to obtain pin list lock")
.contains(&pin_id);
if can_retrieve {
Ok(Self { pin_id })
} else {
Err(PinRetrievalError::AlreadyRetrieved(pin_id))
}
}
pub fn get_gpio_mode(&mut self) -> i32 {
unsafe { ffi::orangepi_get_gpio_mode(self.pin_id) }
}
}

2
src/lib.rs Normal file
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mod ffi;
pub mod gpio;