54 lines
1.6 KiB
Rust
54 lines
1.6 KiB
Rust
use std::path::Path;
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use std::time::Duration;
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use std::{env, io, process, thread};
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use rand::random;
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use serial::SerialPort;
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pub fn main() {
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if let Some(port_name) = env::args().nth(1) {
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let idles = env::args().position(|x| x == "--idles").is_some();
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println!("Saturating port {:?} with 115200 8N1", port_name);
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println!("Idles: {}", idles);
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println!("Process ID: {}", process::id());
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let mut port = serial::open(&port_name).unwrap();
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if saturate(&mut port, idles).is_err() {
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eprintln!("Unable to saturate port");
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}
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} else {
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let path = env::args().next().unwrap();
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let basepath = Path::new(&path).with_extension("");
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let basename = basepath.file_name().unwrap();
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eprintln!("USAGE: {} <port-name>", basename.to_string_lossy());
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}
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}
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fn saturate<T: SerialPort>(port: &mut T, idles: bool) -> io::Result<()> {
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port.reconfigure(&|settings| {
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settings.set_baud_rate(serial::Baud115200)?;
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settings.set_char_size(serial::Bits8);
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settings.set_parity(serial::ParityNone);
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settings.set_stop_bits(serial::Stop1);
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Ok(())
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})?;
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let mut written = 0;
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loop {
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let len = random::<usize>() % 0x1000;
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let buf: Vec<u8> = (written..written + len).map(|x| x as u8).collect();
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port.write_all(&buf)?;
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if idles {
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let micros = (random::<usize>() % 1000) as u64;
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println!("Sleeping {}us", micros);
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port.flush().unwrap();
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thread::sleep(Duration::from_micros(micros));
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}
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written += len;
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println!("Written: {}", written);
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}
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}
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