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从热电偶 Net 读取温度
use lager::LagerBox;
let lager = LagerBox::from_env()?;
let tc = lager.thermocouple("tc1");
| 方法 | 说明 |
|---|---|
name() | 该句柄所指向的 Net 名称 |
read() | 读取温度，单位摄氏度 |
name() -> &strread() -> Result<f64>let celsius = tc.read()?;
println!("{celsius:.1} C");
f64 —— 摄氏度。没有华氏或开尔文的变体；需要的话请在您的测试里换算。
use lager::{EloadMode, LagerBox};
use std::time::{Duration, Instant};
let lager = LagerBox::from_env()?;
let load = lager.eload("eload1");
let tc = lager.thermocouple("tc1");
let ambient = tc.read()?;
load.set(EloadMode::Cc, 1.5)?;
let deadline = Instant::now() + Duration::from_secs(60);
let mut peak = ambient;
while Instant::now() < deadline {
peak = peak.max(tc.read()?);
std::thread::sleep(Duration::from_secs(1));
}
assert!(peak - ambient < 40.0, "rose {:.1} C above ambient", peak - ambient);
thermocouple 角色 Net 开放的任何热电偶前端。放大器和结点类型在创建 Net 时就固定下来，而不是逐次调用时选择。