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|
#![no_std]
#![no_main]
use core::sync::atomic::{AtomicU8, Ordering};
use defmt::*;
use embassy_executor::Spawner;
use embassy_futures::join::join;
use embassy_nrf::usb::Driver;
use embassy_nrf::usb::vbus_detect::HardwareVbusDetect;
use embassy_nrf::{bind_interrupts, pac, peripherals, usb};
use embassy_time::Timer;
use embassy_usb::class::hid::{
HidBootProtocol, HidProtocolMode, HidSubclass, HidWriter, ReportId, RequestHandler, State,
};
use embassy_usb::control::OutResponse;
use embassy_usb::{Builder, Config};
use usbd_hid::descriptor::{MouseReport, SerializedDescriptor};
use {defmt_rtt as _, panic_probe as _};
bind_interrupts!(struct Irqs {
USBD => usb::InterruptHandler<peripherals::USBD>;
CLOCK_POWER => usb::vbus_detect::InterruptHandler;
});
static HID_PROTOCOL_MODE: AtomicU8 = AtomicU8::new(HidProtocolMode::Boot as u8);
#[embassy_executor::main]
async fn main(_spawner: Spawner) {
let p = embassy_nrf::init(Default::default());
info!("Enabling ext hfosc...");
pac::CLOCK.tasks_hfclkstart().write_value(1);
while pac::CLOCK.events_hfclkstarted().read() != 1 {}
// Create the driver, from the HAL.
let driver = Driver::new(p.USBD, Irqs, HardwareVbusDetect::new(Irqs));
// Create embassy-usb Config
let mut config = Config::new(0xc0de, 0xcafe);
config.manufacturer = Some("Embassy");
config.product = Some("HID mouse example");
config.serial_number = Some("12345678");
config.max_power = 100;
config.max_packet_size_0 = 64;
config.composite_with_iads = false;
config.device_class = 0;
config.device_sub_class = 0;
config.device_protocol = 0;
// Create embassy-usb DeviceBuilder using the driver and config.
// It needs some buffers for building the descriptors.
let mut config_descriptor = [0; 256];
let mut bos_descriptor = [0; 256];
let mut msos_descriptor = [0; 256];
let mut control_buf = [0; 64];
let mut request_handler = MyRequestHandler {};
let mut state = State::new();
let mut builder = Builder::new(
driver,
config,
&mut config_descriptor,
&mut bos_descriptor,
&mut msos_descriptor,
&mut control_buf,
);
// Create classes on the builder.
let config = embassy_usb::class::hid::Config {
report_descriptor: MouseReport::desc(),
request_handler: Some(&mut request_handler),
poll_ms: 60,
max_packet_size: 8,
hid_subclass: HidSubclass::Boot,
hid_boot_protocol: HidBootProtocol::Mouse,
};
let mut writer = HidWriter::<_, 5>::new(&mut builder, &mut state, config);
// Build the builder.
let mut usb = builder.build();
// Run the USB device.
let usb_fut = usb.run();
// Do stuff with the class!
let hid_fut = async {
let mut y: i8 = 5;
loop {
Timer::after_millis(500).await;
y = -y;
if HID_PROTOCOL_MODE.load(Ordering::Relaxed) == HidProtocolMode::Boot as u8 {
let buttons = 0u8;
let x = 0i8;
match writer.write(&[buttons, x as u8, y as u8]).await {
Ok(()) => {}
Err(e) => warn!("Failed to send boot report: {:?}", e),
}
} else {
let report = MouseReport {
buttons: 0,
x: 0,
y,
wheel: 0,
pan: 0,
};
match writer.write_serialize(&report).await {
Ok(()) => {}
Err(e) => warn!("Failed to send report: {:?}", e),
}
}
}
};
// Run everything concurrently.
// If we had made everything `'static` above instead, we could do this using separate tasks instead.
join(usb_fut, hid_fut).await;
}
struct MyRequestHandler {}
impl RequestHandler for MyRequestHandler {
fn get_report(&mut self, id: ReportId, _buf: &mut [u8]) -> Option<usize> {
info!("Get report for {:?}", id);
None
}
fn set_report(&mut self, id: ReportId, data: &[u8]) -> OutResponse {
info!("Set report for {:?}: {=[u8]}", id, data);
OutResponse::Accepted
}
fn get_protocol(&self) -> HidProtocolMode {
let protocol = HidProtocolMode::from(HID_PROTOCOL_MODE.load(Ordering::Relaxed));
info!("The current HID protocol mode is: {}", protocol);
protocol
}
fn set_protocol(&mut self, protocol: HidProtocolMode) -> OutResponse {
info!("Switching to HID protocol mode: {}", protocol);
HID_PROTOCOL_MODE.store(protocol as u8, Ordering::Relaxed);
OutResponse::Accepted
}
fn set_idle_ms(&mut self, id: Option<ReportId>, dur: u32) {
info!("Set idle rate for {:?} to {:?}", id, dur);
}
fn get_idle_ms(&mut self, id: Option<ReportId>) -> Option<u32> {
info!("Get idle rate for {:?}", id);
None
}
}
|
