plctag 0.4.1

a rust wrapper of [libplctag](https://github.com/libplctag/libplctag), with rust style APIs and useful extensions
Documentation 
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// plctag-rs
//
// a rust wrapper of libplctag, with rust style APIs and useful extensions.
// Copyright: 2022, Joylei <leingliu@gmail.com>
// License: MIT

use plctag::futures::{AsyncTag, Error};

use tokio::runtime;

fn main() {
    let rt = runtime::Runtime::new().unwrap();
    let res: Result<_, Error> = rt.block_on(async {
        let path="protocol=ab-eip&plc=controllogix&path=1,0&gateway=192.168.1.120&name=MyTag1&elem_count=1&elem_size=16"; // YOUR TAG DEFINITION
        let mut tag = AsyncTag::new(path)?;
        let offset = 0;
        let value: u16 = tag.read_value(offset).await?;
        println!("tag value: {}", value);

        let value = value + 10;
        tag.write_value(offset, value).await?;
        Ok(())
    });
    res.unwrap();
}