3af991ab63
- Allows classes to handle vendor requests. - Allows classes to use a single handler for multiple interfaces. - Allows classes to access the other events (previously only `reset` was available).
124 lines
3.6 KiB
Rust
124 lines
3.6 KiB
Rust
#![no_std]
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#![no_main]
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#![feature(type_alias_impl_trait)]
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use core::mem;
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use defmt::*;
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use embassy_executor::Spawner;
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use embassy_futures::join::join;
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use embassy_nrf::usb::{Driver, HardwareVbusDetect};
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use embassy_nrf::{interrupt, pac};
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use embassy_time::{Duration, Timer};
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use embassy_usb::class::hid::{HidWriter, ReportId, RequestHandler, State};
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use embassy_usb::control::OutResponse;
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use embassy_usb::{Builder, Config};
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use usbd_hid::descriptor::{MouseReport, SerializedDescriptor};
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use {defmt_rtt as _, panic_probe as _};
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#[embassy_executor::main]
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async fn main(_spawner: Spawner) {
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let p = embassy_nrf::init(Default::default());
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let clock: pac::CLOCK = unsafe { mem::transmute(()) };
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info!("Enabling ext hfosc...");
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clock.tasks_hfclkstart.write(|w| unsafe { w.bits(1) });
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while clock.events_hfclkstarted.read().bits() != 1 {}
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// Create the driver, from the HAL.
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let irq = interrupt::take!(USBD);
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let power_irq = interrupt::take!(POWER_CLOCK);
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let driver = Driver::new(p.USBD, irq, HardwareVbusDetect::new(power_irq));
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// Create embassy-usb Config
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let mut config = Config::new(0xc0de, 0xcafe);
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config.manufacturer = Some("Embassy");
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config.product = Some("HID mouse example");
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config.serial_number = Some("12345678");
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config.max_power = 100;
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config.max_packet_size_0 = 64;
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// Create embassy-usb DeviceBuilder using the driver and config.
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// It needs some buffers for building the descriptors.
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let mut device_descriptor = [0; 256];
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let mut config_descriptor = [0; 256];
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let mut bos_descriptor = [0; 256];
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let mut control_buf = [0; 64];
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let request_handler = MyRequestHandler {};
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let mut state = State::new();
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let mut builder = Builder::new(
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driver,
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config,
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&mut device_descriptor,
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&mut config_descriptor,
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&mut bos_descriptor,
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&mut control_buf,
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);
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// Create classes on the builder.
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let config = embassy_usb::class::hid::Config {
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report_descriptor: MouseReport::desc(),
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request_handler: Some(&request_handler),
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poll_ms: 60,
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max_packet_size: 8,
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};
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let mut writer = HidWriter::<_, 5>::new(&mut builder, &mut state, config);
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// Build the builder.
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let mut usb = builder.build();
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// Run the USB device.
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let usb_fut = usb.run();
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// Do stuff with the class!
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let hid_fut = async {
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let mut y: i8 = 5;
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loop {
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Timer::after(Duration::from_millis(500)).await;
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y = -y;
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let report = MouseReport {
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buttons: 0,
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x: 0,
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y,
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wheel: 0,
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pan: 0,
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};
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match writer.write_serialize(&report).await {
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Ok(()) => {}
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Err(e) => warn!("Failed to send report: {:?}", e),
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}
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}
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};
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// Run everything concurrently.
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// If we had made everything `'static` above instead, we could do this using separate tasks instead.
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join(usb_fut, hid_fut).await;
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}
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struct MyRequestHandler {}
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impl RequestHandler for MyRequestHandler {
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fn get_report(&self, id: ReportId, _buf: &mut [u8]) -> Option<usize> {
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info!("Get report for {:?}", id);
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None
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}
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fn set_report(&self, id: ReportId, data: &[u8]) -> OutResponse {
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info!("Set report for {:?}: {=[u8]}", id, data);
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OutResponse::Accepted
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}
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fn set_idle_ms(&self, id: Option<ReportId>, dur: u32) {
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info!("Set idle rate for {:?} to {:?}", id, dur);
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}
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fn get_idle_ms(&self, id: Option<ReportId>) -> Option<u32> {
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info!("Get idle rate for {:?}", id);
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None
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}
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}
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