134 lines
3.9 KiB
Rust
134 lines
3.9 KiB
Rust
#![no_std]
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#![no_main]
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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_stm32::usb::Driver;
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use embassy_stm32::{bind_interrupts, peripherals, usb, Config};
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use embassy_time::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;
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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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bind_interrupts!(struct Irqs {
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USB_FS => usb::InterruptHandler<peripherals::USB>;
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});
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#[embassy_executor::main]
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async fn main(_spawner: Spawner) {
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let mut config = Config::default();
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{
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use embassy_stm32::rcc::*;
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config.rcc.hsi = true;
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config.rcc.sys = Sysclk::PLL1_R;
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config.rcc.pll = Some(Pll {
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// 80Mhz clock (16 / 1 * 10 / 2)
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source: PllSource::HSI,
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prediv: PllPreDiv::DIV1,
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mul: PllMul::MUL10,
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divp: None,
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divq: None,
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divr: Some(PllRDiv::DIV2),
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});
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config.rcc.hsi48 = Some(Hsi48Config { sync_from_usb: true }); // needed for USB
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config.rcc.mux.clk48sel = mux::Clk48sel::HSI48;
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}
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let p = embassy_stm32::init(config);
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// Create the driver, from the HAL.
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let driver = Driver::new(p.USB, Irqs, p.PA12, p.PA11);
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// Create embassy-usb Config
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let mut config = embassy_usb::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 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 mut 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 config_descriptor,
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&mut bos_descriptor,
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&mut [], // no msos descriptors
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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(&mut 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_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(&mut 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(&mut 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(&mut 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(&mut 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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