14a8f171e5
* Make blocking APIs optionally async `DeviceInfo::open`, `Device::from_fd`, `Device::set_configuration`, `Device::reset`, `Interface::set_alt_setting`, `Interface::clear_halt` all perform IO but are currently blocking because the underlying OS APIs are blocking. `list_devices`,`list_buses`, `Device::claim_interface` `Device::detach_and_claim_interface` theoretically don't perform IO, but are also included here because they need to be async on WebUSB. The `MaybeFuture` trait allows deferring these actions to the thread pool from the `blocking` crate when used asynchronously with `.await` / `IntoFuture`, or directly runs the blocking syscall synchronously with a `.wait()` method.
33 lines
885 B
Rust
33 lines
885 B
Rust
use futures_lite::future::block_on;
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use nusb::{transfer::RequestBuffer, MaybeFuture};
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fn main() {
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env_logger::init();
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let di = nusb::list_devices()
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.wait()
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.unwrap()
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.find(|d| d.vendor_id() == 0x59e3 && d.product_id() == 0x0a23)
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.expect("device should be connected");
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println!("Device info: {di:?}");
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let device = di.open().wait().unwrap();
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let interface = device.claim_interface(0).wait().unwrap();
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block_on(interface.bulk_out(0x02, Vec::from([1, 2, 3, 4, 5])))
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.into_result()
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.unwrap();
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let mut queue = interface.bulk_in_queue(0x81);
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loop {
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while queue.pending() < 8 {
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queue.submit(RequestBuffer::new(256));
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}
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let result = block_on(queue.next_complete());
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println!("{result:?}");
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if result.status.is_err() {
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break;
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}
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}
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}
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