use std::{
    io::{self, Write},
    time::Duration,
};

fn main() {
    let port_name = "/dev/serial0";
    let baud_rate = 9600;

    let port = serialport::new(port_name, baud_rate)
        .timeout(Duration::from_millis(100))
        .open();

    match port {
        Ok(mut port) => {
            let mut serial_buf: Vec<u8> = vec![0; 1000];
            println!("Receiving data on {} at {} baud:", &port_name, &baud_rate);
            loop {
                match port.read(serial_buf.as_mut_slice()) {
                    Ok(t) => io::stdout().write_all(&serial_buf[..t]).unwrap(),
                    Err(ref e) if e.kind() == io::ErrorKind::TimedOut => (),
                    Err(e) => {
                        eprintln!("Failed to read \"{}\". Error: {}", port_name, e);
                        ::std::process::exit(1);
                    }
                }
            }
        }
        Err(e) => {
            eprintln!("Failed to open \"{}\". Error: {}", port_name, e);
            ::std::process::exit(1);
        }
    }
}