电源

use lager::LagerBox;

let lager = LagerBox::from_env()?;
let supply = lager.supply("supply1");

pub struct SupplyState {
    pub netname: Option<String>,
    pub channel: Option<i64>,
    pub error: Option<String>,        // set when the whole gather failed
    pub voltage: Option<f64>,         // measured, V
    pub current: Option<f64>,         // measured, A
    pub power: Option<f64>,           // measured, W
    pub enabled: Option<bool>,
    pub mode: Option<String>,         // "CV" or "CC"
    pub voltage_set: Option<f64>,     // setpoint, V
    pub current_set: Option<f64>,     // setpoint, A
    pub voltage_max: Option<f64>,     // instrument hardware limit, V
    pub current_max: Option<f64>,     // instrument hardware limit, A
    pub ocp_limit: Option<f64>,
    pub ocp_tripped: Option<bool>,
    pub ovp_limit: Option<f64>,
    pub ovp_tripped: Option<bool>,
}

supply.set_voltage(3.3)?;

let s = supply.state()?;
println!("{:?} V at {:?} A, mode {:?}", s.voltage, s.current, s.mode);

use lager::LagerBox;

let lager = LagerBox::from_env()?;
let supply = lager.supply("supply1");

supply.set_voltage(3.3)?;
supply.set_current(0.5)?;
supply.enable()?;
std::thread::sleep(std::time::Duration::from_millis(200));

let s = supply.state()?;
assert_eq!(s.enabled, Some(true));
let v = s.voltage.expect("output is on, so a measurement exists");
assert!((v - 3.3).abs() < 0.05, "rail at {v:.4} V");

supply.disable()?;

supply.set_voltage(3.3)?;
supply.set_ocp(0.25)?;   // trip rather than let it draw more
supply.enable()?;

std::thread::sleep(std::time::Duration::from_secs(5));

let s = supply.state()?;
assert_eq!(s.ocp_tripped, Some(false), "DUT tripped the 250 mA budget");
supply.disable()?;