您的第一个测试

from lager import Net, NetType

def main():
    # 获取我们的 Net
    psu = Net.get('POWER', type=NetType.PowerSupply)
    debug = Net.get('DEBUG_NET', type=NetType.Debug)
    sensor = Net.get('SENSOR_1', type=NetType.ADC)

    try:
        # 烧录固件
        print("Flashing firmware...")
        debug.connect()
        debug.flash(['firmware.hex'])
        debug.reset()
        print("Flash complete.")

        # 给 DUT 上电
        print("Enabling power supply at 3.3V...")
        psu.set_voltage(3.3)
        psu.set_current(0.5)
        psu.enable()
        print("Power enabled.")

        # 进行一次测量
        voltage = sensor.input()
        print(f"Sensor reading: {voltage:.4f} V")

        # 检查结果
        if 2.0 <= voltage <= 3.0:
            print("PASS: Sensor voltage within expected range.")
        else:
            print(f"FAIL: Sensor voltage {voltage:.4f}V outside range [2.0, 3.0]")

    finally:
        # 始终清理，即使发生错误
        print("Disabling power supply...")
        psu.disable()
        print("Done.")

if __name__ == '__main__':
    main()

use lager::LagerBox;

#[test]
fn sensor_reads_in_range_after_boot() -> lager::Result<()> {
    // 从环境变量读取 LAGER_BOX_HOST。
    let lager = LagerBox::from_env()?;
    let psu = lager.supply("POWER");
    let debug = lager.debug("DEBUG_NET");
    let sensor = lager.adc("SENSOR_1");

    // 烧录固件
    println!("Flashing firmware...");
    debug.connect()?;
    debug.flash("firmware.hex")?;
    debug.reset(false)?;
    println!("Flash complete.");

    // 给 DUT 上电
    println!("Enabling power supply at 3.3V...");
    psu.set_voltage(3.3)?;
    psu.set_current(0.5)?;
    psu.enable()?;
    println!("Power enabled.");

    // 进行一次测量并检查结果；在断言之前先关闭电源，
    // 这样失败的测试不会让 DUT 一直带电。
    let voltage = sensor.read()?;
    println!("Sensor reading: {voltage:.4} V");
    psu.disable()?;

    assert!(
        (2.0..=3.0).contains(&voltage),
        "sensor voltage {voltage:.4} V outside range [2.0, 3.0]"
    );
    Ok(())
}