Script to turn LEDs off on a smart hub -- run with: `cargo +nightly -Zscript led_off.rs`

led_off.rs

#!/usr/bin/env cargo
---
package.edition = "2024"
dependencies.nusb = { version = "0.2.1" }
---

use nusb::transfer::{ControlOut, ControlType, Recipient};
use nusb::MaybeFuture;
use std::time::Duration;

fn main() {
    for dev in nusb::list_devices().wait().unwrap() {
        if dev.vendor_id() != 0x05e3 || dev.product_id() != 0x0610 || dev.class() != 0x09 {
            continue;
        }
        let mut s = format!("{}", dev.bus_id());
        for port in dev.port_chain() {
            s.push_str(&format!("/{port}"));
        }
        println!(
            "Disabling LEDs on {s} {} {} - {}",
            dev.serial_number().unwrap_or("<no serial>"),
            dev.manufacturer_string().unwrap_or("<no manufacturer>"),
            dev.product_string().unwrap_or("<no product>")
        );

        let Ok(dev) = dev
            .open()
            .wait()
            .inspect_err(|e| eprintln!("Couldn't open: {e}"))
        else {
            continue;
        };
        for port in 1..=4 {
            let off = ControlOut {
                control_type: ControlType::Class,
                recipient: Recipient::Other,
                request: 3,                  // SET_FEATURE
                value: 22,                   // PORT_INDICATOR,
                index: 0x0300 | port as u16, // Turn off (3) LED on the specified port
                data: &[],
            };
            if let Err(e) = dev.control_out(off, Duration::from_secs(5)).wait() {
                eprintln!("Unable to turn LEDs off: {e}");
                continue;
            }
        }
    }
}