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cli_async.rs
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cli_async.rs
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use embedded_hal_async::delay::DelayNs;
use embedded_io_adapters::tokio_1::FromTokio;
use inquire::Select;
use sds011::{Config, SDS011};
use std::env;
use std::error::Error;
use std::time::Duration;
use tokio::time::sleep;
use tokio_serial::SerialStream;
struct Delay;
impl DelayNs for Delay {
async fn delay_ns(&mut self, n: u32) {
sleep(Duration::from_nanos(n.into())).await;
}
}
#[tokio::main]
async fn main() -> Result<(), Box<dyn Error>> {
let mut args: Vec<String> = env::args().collect();
// use the first arg as serial port, query interactively if not given
let port = if args.len() == 2 {
args.pop().unwrap()
} else {
let ports = tokio_serial::available_ports()?;
let ports: Vec<String> = ports.into_iter().map(|p| p.port_name).collect();
if ports.len() == 0 {
return Err("No serial ports available.".into());
}
Select::new("Which serial port should be used?", ports).prompt()?
};
let builder = tokio_serial::new(port, 9600).timeout(Duration::from_secs(1));
let serial = SerialStream::open(&builder)?;
let mut adapter = FromTokio::new(serial);
let sensor = SDS011::new(&mut adapter, Config::default());
// initialize (puts the sensor into Polling state)
let mut sensor = sensor.init(&mut Delay).await?;
let fw = sensor.version();
let id = sensor.id();
println!("SDS011, ID: {id}, Firmware: {fw}");
let vals = sensor.measure(&mut Delay).await?;
println!("{vals}");
Ok(())
}