42 lines
823 B
Rust
42 lines
823 B
Rust
use lexical_core::Float;
|
|
|
|
/// Steinhart-Hart equation parameters
|
|
#[derive(Clone, Debug)]
|
|
pub struct Parameters {
|
|
pub t0: f64,
|
|
pub r: f64,
|
|
pub r0: f64,
|
|
|
|
r_fact: f64,
|
|
}
|
|
|
|
impl Parameters {
|
|
/// Update the cached r_fact
|
|
pub fn update(&mut self) {
|
|
self.r_fact = (self.r / self.r0).ln();
|
|
}
|
|
|
|
/// Perform the voltage to temperature conversion.
|
|
///
|
|
/// Result unit: Kelvin
|
|
///
|
|
/// TODO: verify
|
|
pub fn get_temperature(&self, b: f64) -> f64 {
|
|
let inv_temp = 1.0 / self.t0 + self.r_fact / b;
|
|
1.0 / inv_temp
|
|
}
|
|
}
|
|
|
|
impl Default for Parameters {
|
|
fn default() -> Self {
|
|
let mut p = Parameters {
|
|
t0: 0.001_4,
|
|
r: 0.000_000_099,
|
|
r0: 5_110.0,
|
|
r_fact: 0.0,
|
|
};
|
|
p.update();
|
|
p
|
|
}
|
|
}
|