lager/nets/
eload.rs

1//! Electronic-load nets (Rigol DL3000 family).
2
3use super::net_handle;
4pub use crate::wire::EloadState;
5
6/// E-load operating mode.
7#[derive(Debug, Clone, Copy, PartialEq, Eq)]
8pub enum EloadMode {
9    /// Constant current (A).
10    Cc,
11    /// Constant voltage (V).
12    Cv,
13    /// Constant resistance (ohm).
14    Cr,
15    /// Constant power (W).
16    Cp,
17}
18
19impl EloadMode {
20    /// Wire encoding (the `/net/command` action name).
21    pub fn as_str(&self) -> &'static str {
22        match self {
23            EloadMode::Cc => "cc",
24            EloadMode::Cv => "cv",
25            EloadMode::Cr => "cr",
26            EloadMode::Cp => "cp",
27        }
28    }
29}
30
31pub(crate) mod ops {
32    use serde_json::json;
33
34    use super::EloadMode;
35    use crate::wire::{net_command, unit, value_as, value_f64, EloadState, Op, Timeout};
36
37    const ROLE: &str = "eload";
38
39    pub(crate) fn state(name: &str) -> Op<EloadState> {
40        Op {
41            req: net_command(name, ROLE, "state", json!({}), Timeout::Default),
42            parse: value_as::<EloadState>,
43        }
44    }
45
46    pub(crate) fn set(name: &str, mode: EloadMode, value: f64) -> Op<()> {
47        // Mode + setpoint is one composite /invoke box-side, so it applies
48        // atomically under the instrument lock.
49        Op {
50            req: net_command(
51                name,
52                ROLE,
53                mode.as_str(),
54                json!({ "value": value }),
55                Timeout::Default,
56            ),
57            parse: unit,
58        }
59    }
60
61    pub(crate) fn setpoint(name: &str, mode: EloadMode) -> Op<f64> {
62        Op {
63            req: net_command(name, ROLE, mode.as_str(), json!({}), Timeout::Default),
64            parse: value_f64,
65        }
66    }
67}
68
69net_handle! {
70    /// Handle for an electronic-load net.
71    sync: Eload,
72    async: AsyncEload,
73    methods: {
74        /// Read the full load state (mode, input enable, measurements).
75        fn state() -> EloadState = ops::state;
76        /// Switch to `mode` and apply `value` as its setpoint, atomically.
77        fn set(mode: EloadMode, value: f64) -> () = ops::set;
78        /// Read the stored setpoint for `mode`.
79        fn setpoint(mode: EloadMode) -> f64 = ops::setpoint;
80    }
81}
lager/nets/eload.rs

lager/nets/
eload.rs
