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extern crate serial;
use std::env;
use std::thread;
use std::time::Duration;
use serial::prelude::*;
const SETTINGS: serial::PortSettings = serial::PortSettings {
baud_rate: serial::Baud9600,
char_size: serial::Bits8,
parity: serial::ParityNone,
stop_bits: serial::Stop1,
flow_control: serial::FlowNone,
};
fn main() {
for arg in env::args_os().skip(1) {
let mut port = serial::open(&arg).unwrap();
println!("opened device {:?}", arg);
probe_pins(&mut port).unwrap();
}
}
fn probe_pins<T: SerialPort>(port: &mut T) -> serial::Result<()> {
try!(port.configure(&SETTINGS));
try!(port.set_timeout(Duration::from_millis(100)));
try!(port.set_rts(false));
try!(port.set_dtr(false));
let mut rts = false;
let mut dtr = false;
let mut toggle = true;
loop {
thread::sleep(Duration::from_secs(1));
if toggle {
rts = !rts;
try!(port.set_rts(rts));
}
else {
dtr = !dtr;
try!(port.set_dtr(dtr));
}
println!("RTS={:5?} DTR={:5?} CTS={:5?} DSR={:5?} RI={:5?} CD={:?}",
rts,
dtr,
try!(port.read_cts()),
try!(port.read_dsr()),
try!(port.read_ri()),
try!(port.read_cd()));
toggle = !toggle;
}
}
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