wiringpi 0.2.4

An API wrapper for WiringPi, implementing the most important functions and provides a bit of type system convenience. See README.md for Raspberry Pi build instructions.
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# WiringPi Bindings for Rust

An API wrapper for [WiringPi](http://wiringpi.com/) to make it accessible
using Rust. It implements the most important functions and provides a bit of
type system convenience.

Add the following lines to your `Cargo.io` to use `rust-wiringpi`:

```toml
[dependencies]
wiringpi = "0.2"
```

## Online Documentation

[Released](https://docs.rs/wiringpi/0.2.4/wiringpi/)

[Master branch](http://ogeon.github.io/docs/rust-wiringpi/master/wiringpi/index.html)

## Example: Flashing Light

```Rust
extern crate wiringpi;

use wiringpi::pin::Value::{High, Low};
use std::{thread, time};

fn main() {
    //Setup WiringPi with its own pin numbering order
    let pi = wiringpi::setup();

    //Use WiringPi pin 0 as output
    let pin = pi.output_pin(0);

    let interval = time::Duration::from_millis(1000);

    loop {
        //Set pin 0 to high and wait one second
        pin.digital_write(High);
        thread::sleep(interval);

        //Set pin 0 to low and wait one second
        pin.digital_write(Low);
        thread::sleep(interval);
    }
}
```

## Cross Compiling Using Cargo

Follow this [guide](https://hackernoon.com/compiling-rust-for-the-raspberry-pi-49fdcd7df658).

```
cargo build --target=arm-unknown-linux-gnueabihf   # Older models
cargo build --target=armv7-unknown-linux-gnueabihf # Newer models
```

## Orange Pi support

`rust-wiringpi` can also wrap the WiringOP library for the Orange Pi SBC boards.
This can be enabled with the `orangepi` feature:

```toml
[dependencies.wiringpi]
verson = "0.2"
features = ["orangepi"]
```

## Development Mode

In development mode, `rust-wiringpi` is compiled as a rust-native library excluding the original WiringPi.
And binding functions are replaced by dummy functions that output simple logs to stdout.
With this mode, you can build and debug your project on platforms that does not support WiringPi.

```shell
# build
$ cargo build --features wiringpi/development

# run
$ cargo run --features wiringpi/development

[wiringpi] `wiringPiSetup` called
[wiringpi] `pinMode` called with: 0, 1
[wiringpi] `digitalWrite` called with: 0, 1
[wiringpi] `digitalWrite` called with: 0, 0
...
```