Struct Reading 

pub struct Reading { /* private fields */ }

A reading consisting of temperature (in °C) and CO₂ concentration (in ppm) values.

Example

let sensor = Sensor::open_default()?;
let reading = sensor.read()?;
println!("{} °C, {} ppm CO₂", reading.temperature(), reading.co2());

Implementations

impl Reading

pub fn temperature(&self) -> f32

Returns the measured temperature in °C.

Example

let sensor = Sensor::open_default()?;
let reading = sensor.read()?;
println!("{} °C", reading.temperature());

Examples found in repository

examples/watch.rs (line 9)

fn main() -> Result<()> {
    let sensor = Sensor::open_default()?;
    loop {
        match sensor.read() {
            Ok(reading) => println!("{:.4} °C, {} ppm CO₂", reading.temperature(), reading.co2()),
            Err(e) => eprintln!("{}", e),
        }
        thread::sleep(Duration::from_secs(5));
    }
}

pub fn co2(&self) -> u16

Returns the CO₂ concentration in ppm (parts per million).

Example

let sensor = Sensor::open_default()?;
let reading = sensor.read()?;
println!("{} ppm CO₂", reading.co2());

Examples found in repository

examples/watch.rs (line 9)

fn main() -> Result<()> {
    let sensor = Sensor::open_default()?;
    loop {
        match sensor.read() {
            Ok(reading) => println!("{:.4} °C, {} ppm CO₂", reading.temperature(), reading.co2()),
            Err(e) => eprintln!("{}", e),
        }
        thread::sleep(Duration::from_secs(5));
    }
}

Trait Implementations

impl Clone for Reading

fn clone(&self) -> Reading

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Reading

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for Reading

fn eq(&self, other: &Reading) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for Reading

fn partial_cmp(&self, other: &Reading) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for Reading