Add code (initial commit 2)
This commit is contained in:
parent
1f2e3091ca
commit
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2
.gitignore
vendored
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2
.gitignore
vendored
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/target
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/*/target
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325
Cargo.lock
generated
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325
Cargo.lock
generated
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# This file is automatically @generated by Cargo.
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# It is not intended for manual editing.
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|
||||
"checksum thread_local 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)" = "c6b53e329000edc2b34dbe8545fd20e55a333362d0a321909685a19bd28c3f1b"
|
||||
"checksum unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "826e7639553986605ec5979c7dd957c7895e93eabed50ab2ffa7f6128a75097c"
|
||||
"checksum version_check 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "914b1a6776c4c929a602fafd8bc742e06365d4bcbe48c30f9cca5824f70dc9dd"
|
||||
"checksum winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)" = "8093091eeb260906a183e6ae1abdba2ef5ef2257a21801128899c3fc699229c6"
|
||||
"checksum winapi-i686-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ac3b87c63620426dd9b991e5ce0329eff545bccbbb34f3be09ff6fb6ab51b7b6"
|
||||
"checksum winapi-util 0.1.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7168bab6e1daee33b4557efd0e95d5ca70a03706d39fa5f3fe7a236f584b03c9"
|
||||
"checksum winapi-x86_64-pc-windows-gnu 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
|
||||
"checksum wincolor 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "96f5016b18804d24db43cebf3c77269e7569b8954a8464501c216cc5e070eaa9"
|
||||
2
Cargo.toml
Normal file
2
Cargo.toml
Normal file
@ -0,0 +1,2 @@
|
||||
[workspace]
|
||||
members = ["mraa-sys", "mraa"]
|
||||
17
mraa-sys/Cargo.toml
Normal file
17
mraa-sys/Cargo.toml
Normal file
@ -0,0 +1,17 @@
|
||||
[package]
|
||||
name = "mraa-sys"
|
||||
description = "Generated bindings for Intel's mraa library for low speed device I/O"
|
||||
authors = ["Alex Mikhalev <alexmikhalevalex@gmail.com>"]
|
||||
license = "MIT"
|
||||
homepage = ""
|
||||
version = "0.1.0"
|
||||
|
||||
edition = "2018"
|
||||
links = "mraa"
|
||||
build = "build.rs"
|
||||
|
||||
[build-dependencies]
|
||||
bindgen = { version = "0.52", default-features = false, features = ["logging", "runtime"] }
|
||||
pkg-config = "0.3"
|
||||
|
||||
[dependencies]
|
||||
50
mraa-sys/build.rs
Normal file
50
mraa-sys/build.rs
Normal file
@ -0,0 +1,50 @@
|
||||
extern crate bindgen;
|
||||
extern crate pkg_config;
|
||||
|
||||
use std::env;
|
||||
use std::path::PathBuf;
|
||||
|
||||
fn main() {
|
||||
let pkgconfig = pkg_config::Config::new();
|
||||
let mraa_config = pkgconfig
|
||||
.probe("mraa")
|
||||
.expect("pkg_config probe failed for mraa");
|
||||
|
||||
let _ = pkgconfig
|
||||
.probe("json-c");
|
||||
// .expect("pkg_config probe failed for json-c");
|
||||
|
||||
// Tell cargo to invalidate the built crate whenever the wrapper changes
|
||||
println!("cargo:rerun-if-changed=src/wrapper.h");
|
||||
|
||||
let mut clang_args: Vec<String> = Vec::new();
|
||||
for include_dir in &mraa_config.include_paths {
|
||||
clang_args.push("-I".to_owned());
|
||||
clang_args.push(include_dir.to_str().unwrap().to_owned());
|
||||
}
|
||||
|
||||
// The bindgen::Builder is the main entry point
|
||||
// to bindgen, and lets you build up options for
|
||||
// the resulting bindings.
|
||||
let mraa_bindings = bindgen::Builder::default()
|
||||
.clang_args(clang_args)
|
||||
// The input header we would like to generate
|
||||
// bindings for.
|
||||
.header("src/wrapper.h")
|
||||
.whitelist_type("mraa_.*")
|
||||
.whitelist_function("mraa_.*")
|
||||
.whitelist_var("mraa_.*")
|
||||
// Tell cargo to invalidate the built crate whenever any of the
|
||||
// included header files changed.
|
||||
.parse_callbacks(Box::new(bindgen::CargoCallbacks))
|
||||
// Finish the builder and generate the bindings.
|
||||
.generate()
|
||||
// Unwrap the Result and panic on failure.
|
||||
.expect("Unable to generate bindings");
|
||||
|
||||
// Write the bindings to the $OUT_DIR/bindings.rs file.
|
||||
let out_path = PathBuf::from(env::var("OUT_DIR").unwrap());
|
||||
mraa_bindings
|
||||
.write_to_file(out_path.join("mraa_bindings.rs"))
|
||||
.expect("Couldn't write bindings!");
|
||||
}
|
||||
27
mraa-sys/src/lib.rs
Normal file
27
mraa-sys/src/lib.rs
Normal file
@ -0,0 +1,27 @@
|
||||
#![allow(non_upper_case_globals)]
|
||||
#![allow(non_camel_case_types)]
|
||||
#![allow(non_snake_case)]
|
||||
#![allow(dead_code)]
|
||||
|
||||
//! A crate with bindings generated by
|
||||
//! [`bindgen`](https://github.com/rust-lang/rust-bindgen) for the Intel `mraa`
|
||||
//! library for low-speed IO communication.
|
||||
//!
|
||||
//! # Cross compilation
|
||||
//! This package uses [pkg_config](https://docs.rs/pkg-config/0.3.17/pkg_config/)
|
||||
//! to find the location of `mraa` headers and libraries, so by setting the
|
||||
//! appropriate environment variables, it is possible to cross compile this
|
||||
//! library for other systems.
|
||||
//!
|
||||
//! Example for cross compiling to BeagleBone:
|
||||
//! ```bash
|
||||
//! SYSROOT=/path/to/sysroot
|
||||
//! export PKG_CONFIG_SYSROOT_DIR="$SYSROOT"
|
||||
//! export PKG_CONFIG_LIBDIR="$SYSROOT/usr/lib/arm-linux-gnueabihf/pkgconfig"
|
||||
//! export PKG_CONFIG_ALLOW_CROSS=1
|
||||
//! export PKG_CONFIG_ALLOW_SYSTEM_LIBS=1
|
||||
//! export PKG_CONFIG_ALLOW_SYSTEM_CFLAGS=1
|
||||
//! cargo build --target=armv7-unknown-linux-gnueabihf
|
||||
//! ```
|
||||
|
||||
include!(concat!(env!("OUT_DIR"), "/mraa_bindings.rs"));
|
||||
1
mraa-sys/src/wrapper.h
Normal file
1
mraa-sys/src/wrapper.h
Normal file
@ -0,0 +1 @@
|
||||
#include <mraa.h>
|
||||
11
mraa/Cargo.toml
Normal file
11
mraa/Cargo.toml
Normal file
@ -0,0 +1,11 @@
|
||||
[package]
|
||||
name = "mraa"
|
||||
version = "0.1.0"
|
||||
authors = ["Alex Mikhalev <alexmikhalevalex@gmail.com>"]
|
||||
edition = "2018"
|
||||
|
||||
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
|
||||
|
||||
[dependencies]
|
||||
mraa-sys = { path = "../mraa-sys" }
|
||||
libc = "0.2.66"
|
||||
249
mraa/src/lib.rs
Normal file
249
mraa/src/lib.rs
Normal file
@ -0,0 +1,249 @@
|
||||
extern crate libc;
|
||||
extern crate mraa_sys;
|
||||
|
||||
use std::fmt;
|
||||
|
||||
const MRAA_RESULT_CHECK_SYSLOG: mraa_sys::mraa_result_t = 10000;
|
||||
|
||||
#[derive(Debug)]
|
||||
pub struct Error {
|
||||
inner: mraa_sys::mraa_result_t,
|
||||
operation: &'static str,
|
||||
}
|
||||
|
||||
impl Error {
|
||||
fn new_check_syslog(operation: &'static str) -> Self {
|
||||
Self {
|
||||
inner: MRAA_RESULT_CHECK_SYSLOG,
|
||||
operation,
|
||||
}
|
||||
}
|
||||
|
||||
pub fn raw_code(&self) -> mraa_sys::mraa_result_t {
|
||||
self.inner
|
||||
}
|
||||
|
||||
pub fn operation(&self) -> &'static str {
|
||||
self.operation
|
||||
}
|
||||
}
|
||||
|
||||
impl fmt::Display for Error {
|
||||
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
|
||||
write!(f, "MRAA error on {}: ", self.operation)?;
|
||||
match self.inner {
|
||||
mraa_sys::mraa_result_t_MRAA_SUCCESS => write!(f, "Success"),
|
||||
mraa_sys::mraa_result_t_MRAA_ERROR_FEATURE_NOT_IMPLEMENTED => {
|
||||
write!(f, "Feature not implemented")
|
||||
}
|
||||
mraa_sys::mraa_result_t_MRAA_ERROR_FEATURE_NOT_SUPPORTED => {
|
||||
write!(f, "Feature not supported by HW")
|
||||
}
|
||||
mraa_sys::mraa_result_t_MRAA_ERROR_INVALID_PARAMETER => write!(f, "Parameter invalid"),
|
||||
mraa_sys::mraa_result_t_MRAA_ERROR_INVALID_RESOURCE => write!(f, "Resource invalid"),
|
||||
MRAA_RESULT_CHECK_SYSLOG => write!(f, "Unknown error, check syslog for error message"),
|
||||
unk => write!(f, "Unknown MRAA error: {}", unk),
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl std::error::Error for Error {}
|
||||
|
||||
pub type Result<T> = std::result::Result<T, self::Error>;
|
||||
|
||||
fn handle_result(inner: mraa_sys::mraa_result_t, operation: &'static str) -> self::Result<()> {
|
||||
if inner == mraa_sys::mraa_result_t_MRAA_SUCCESS {
|
||||
Ok(())
|
||||
} else {
|
||||
Err(Error { inner, operation })
|
||||
}
|
||||
}
|
||||
|
||||
pub fn init() -> self::Result<()> {
|
||||
handle_result(unsafe { mraa_sys::mraa_init() }, "init")
|
||||
}
|
||||
|
||||
// TODO: this crashes sometimes for some reason
|
||||
pub unsafe fn deinit() {
|
||||
// unsafe { mraa_sys::mraa_deinit() };
|
||||
mraa_sys::mraa_deinit();
|
||||
}
|
||||
|
||||
pub enum LogLevel {
|
||||
Emergency = 0,
|
||||
Alert = 1,
|
||||
Critical = 2,
|
||||
Error = 3,
|
||||
Warning = 4,
|
||||
Notice = 5,
|
||||
Info = 6,
|
||||
Debug = 7,
|
||||
}
|
||||
|
||||
pub fn set_log_level(log_level: LogLevel) -> self::Result<()> {
|
||||
handle_result(
|
||||
unsafe { mraa_sys::mraa_set_log_level(log_level as i32) },
|
||||
"set_log_level",
|
||||
)
|
||||
}
|
||||
|
||||
#[derive(Copy, Clone, PartialEq, Eq, Debug)]
|
||||
pub enum GpioDirection {
|
||||
Out,
|
||||
In,
|
||||
OutHigh,
|
||||
OutLow,
|
||||
}
|
||||
|
||||
impl GpioDirection {
|
||||
fn into_raw(self) -> mraa_sys::mraa_gpio_dir_t {
|
||||
use GpioDirection::*;
|
||||
match self {
|
||||
Out => mraa_sys::mraa_gpio_dir_t_MRAA_GPIO_OUT,
|
||||
In => mraa_sys::mraa_gpio_dir_t_MRAA_GPIO_IN,
|
||||
OutHigh => mraa_sys::mraa_gpio_dir_t_MRAA_GPIO_OUT_HIGH,
|
||||
OutLow => mraa_sys::mraa_gpio_dir_t_MRAA_GPIO_OUT_LOW,
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#[derive(Copy, Clone, PartialEq, Eq, Debug)]
|
||||
pub enum GpioEdge {
|
||||
NoEdge,
|
||||
Both,
|
||||
Rising,
|
||||
Falling,
|
||||
}
|
||||
|
||||
impl GpioEdge {
|
||||
fn into_raw(self) -> mraa_sys::mraa_gpio_edge_t {
|
||||
use GpioEdge::*;
|
||||
match self {
|
||||
NoEdge => mraa_sys::mraa_gpio_edge_t_MRAA_GPIO_EDGE_NONE,
|
||||
Both => mraa_sys::mraa_gpio_edge_t_MRAA_GPIO_EDGE_BOTH,
|
||||
Rising => mraa_sys::mraa_gpio_edge_t_MRAA_GPIO_EDGE_RISING,
|
||||
Falling => mraa_sys::mraa_gpio_edge_t_MRAA_GPIO_EDGE_FALLING,
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
pub struct Gpio {
|
||||
inner: mraa_sys::mraa_gpio_context,
|
||||
isr_callback: Option<Box<dyn FnMut()>>,
|
||||
}
|
||||
|
||||
impl Gpio {
|
||||
pub fn new(pin: i32) -> Result<Self> {
|
||||
let inner = unsafe { mraa_sys::mraa_gpio_init(pin) };
|
||||
if inner.is_null() {
|
||||
Err(Error::new_check_syslog("Gpio::new"))
|
||||
} else {
|
||||
Ok(Self {
|
||||
inner,
|
||||
isr_callback: None,
|
||||
})
|
||||
}
|
||||
}
|
||||
|
||||
pub fn set_dir(&mut self, dir: GpioDirection) -> Result<()> {
|
||||
handle_result(
|
||||
unsafe { mraa_sys::mraa_gpio_dir(self.inner, dir.into_raw()) },
|
||||
"Gpio::set_dir",
|
||||
)
|
||||
}
|
||||
|
||||
pub fn read(&mut self) -> Result<bool> {
|
||||
match unsafe { mraa_sys::mraa_gpio_read(self.inner) } {
|
||||
0 => Ok(false),
|
||||
1 => Ok(true),
|
||||
_ => Err(Error::new_check_syslog("Gpio::read")),
|
||||
}
|
||||
}
|
||||
|
||||
pub fn set_isr<F>(&mut self, edge: GpioEdge, callback: F) -> Result<()>
|
||||
where
|
||||
F: FnMut() + 'static + Send + Sync,
|
||||
{
|
||||
if self.isr_callback.is_some() {
|
||||
let _ = self.remove_isr();
|
||||
}
|
||||
self.isr_callback = Some(Box::new(callback));
|
||||
|
||||
let data = self.isr_callback.as_mut().unwrap().as_mut() as *mut _;
|
||||
let result = unsafe {
|
||||
mraa_sys::mraa_gpio_isr(
|
||||
self.inner,
|
||||
edge.into_raw(),
|
||||
Some(call_closure::<F>),
|
||||
data as *mut _,
|
||||
)
|
||||
};
|
||||
handle_result(result, "Gpio::set_isr")
|
||||
}
|
||||
|
||||
pub fn remove_isr(&mut self) -> Result<()> {
|
||||
let result = unsafe { mraa_sys::mraa_gpio_isr_exit(self.inner) };
|
||||
self.isr_callback = None;
|
||||
handle_result(result, "Gpio::remove_isr")
|
||||
}
|
||||
}
|
||||
|
||||
unsafe extern "C" fn call_closure<F>(data: *mut libc::c_void)
|
||||
where
|
||||
F: FnMut(),
|
||||
{
|
||||
let callback_ptr = data as *mut F;
|
||||
let callback = &mut *callback_ptr;
|
||||
callback();
|
||||
}
|
||||
|
||||
impl Drop for Gpio {
|
||||
fn drop(&mut self) {
|
||||
unsafe { mraa_sys::mraa_gpio_close(self.inner) };
|
||||
}
|
||||
}
|
||||
|
||||
pub struct Aio {
|
||||
inner: mraa_sys::mraa_aio_context,
|
||||
}
|
||||
|
||||
impl Aio {
|
||||
pub fn new(pin: u32) -> Result<Self> {
|
||||
let inner = unsafe { mraa_sys::mraa_aio_init(pin) };
|
||||
if inner.is_null() {
|
||||
Err(Error::new_check_syslog("Aio::new"))
|
||||
} else {
|
||||
Ok(Self { inner })
|
||||
}
|
||||
}
|
||||
|
||||
pub fn read(&mut self) -> Result<i32> {
|
||||
match unsafe { mraa_sys::mraa_aio_read(self.inner) } {
|
||||
-1 => Err(Error::new_check_syslog("Aio::read")),
|
||||
value => Ok(value),
|
||||
}
|
||||
}
|
||||
|
||||
pub fn read_float(&mut self) -> Result<f32> {
|
||||
let value = unsafe { mraa_sys::mraa_aio_read_float(self.inner) };
|
||||
if value < 0.0 {
|
||||
Err(Error::new_check_syslog("Aio::read_float"))
|
||||
} else {
|
||||
Ok(value)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
impl Drop for Aio {
|
||||
fn drop(&mut self) {
|
||||
unsafe { mraa_sys::mraa_aio_close(self.inner) };
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
mod tests {
|
||||
#[test]
|
||||
fn it_works() {
|
||||
assert_eq!(2 + 2, 4);
|
||||
}
|
||||
}
|
||||
Loading…
x
Reference in New Issue
Block a user