Read linewise from serial port
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a1dcd606d9
commit
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3 changed files with 18 additions and 23 deletions
7
Cargo.lock
generated
7
Cargo.lock
generated
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@ -32,6 +32,12 @@ dependencies = [
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"memchr",
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]
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[[package]]
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name = "anyhow"
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version = "1.0.57"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "08f9b8508dccb7687a1d6c4ce66b2b0ecef467c94667de27d8d7fe1f8d2a9cdc"
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[[package]]
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name = "autocfg"
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version = "1.1.0"
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@ -119,6 +125,7 @@ dependencies = [
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name = "mightyohm-gc-exporter"
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version = "0.1.0-dev"
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dependencies = [
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"anyhow",
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"serialport",
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]
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@ -9,4 +9,5 @@ keywords = ["prometheus", "metrics"]
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categories = ["api-bindings", "command-line-utilities", "visualization"]
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[dependencies]
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anyhow = "1.0"
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serialport = "4.1"
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33
src/main.rs
33
src/main.rs
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@ -1,34 +1,21 @@
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use anyhow::Result;
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use std::{
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io::{self, Write},
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io::{BufRead, BufReader},
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time::Duration,
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};
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fn main() {
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fn main() -> Result<()> {
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let port_name = "/dev/serial0";
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let baud_rate = 9600;
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let port = serialport::new(port_name, baud_rate)
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.timeout(Duration::from_millis(100))
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.open();
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.timeout(Duration::from_millis(1000))
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.open()?;
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match port {
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Ok(mut port) => {
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let mut serial_buf: Vec<u8> = vec![0; 1000];
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println!("Receiving data on {} at {} baud:", &port_name, &baud_rate);
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loop {
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match port.read(serial_buf.as_mut_slice()) {
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Ok(t) => io::stdout().write_all(&serial_buf[..t]).unwrap(),
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Err(ref e) if e.kind() == io::ErrorKind::TimedOut => (),
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Err(e) => {
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eprintln!("Failed to read \"{}\". Error: {}", port_name, e);
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::std::process::exit(1);
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}
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}
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}
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}
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Err(e) => {
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eprintln!("Failed to open \"{}\". Error: {}", port_name, e);
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::std::process::exit(1);
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}
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let mut port = BufReader::new(port);
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loop {
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let mut line = String::new();
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port.read_line(&mut line)?;
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println!("{:?}", line);
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}
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}
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