You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: usb_hid_mouse.rs
    path of file: ./repos/embassy/examples/nrf52840/src/bin
    
    the code of the file until where you have to start completion: #![no_std]
#![no_main]

use core::mem;

use defmt::*;
use embassy_executor::Spawner;
use embassy_futures::join::join;
use embassy_nrf::usb::vbus_detect::HardwareVbusDetect;
use embassy_nrf::usb::Driver;
use embassy_nrf::{bind_interrupts, pac, peripherals, usb};
use embassy_time::Timer;
use embassy_usb::class::hid::{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>;
    POWER_CLOCK => usb::vbus_detect::InterruptHandler;
});

#[embassy_executor::main]
async fn main(_spawner: Spawner) {
    let p = embassy_nrf::init(Default::default());
    let clock: pac::CLOCK = unsafe { mem::transmute(()) };

    info!("Enabling ext hfosc...");
    clock.tasks_hfclkstart.write(|w| unsafe { w.bits(1) });
    while clock.events_hfclkstarted.read().bits() != 1 {}

    // Create the driver, from the HAL.
    let driver = Driver::new(p.USBD, Irqs, HardwareVbus
    
async fn main(_spawner: Spawner) {
    let p = embassy_nrf::init(Default::default());
    let clock: pac::CLOCK = unsafe { mem::transmute(()) };

    info!("Enabling ext hfosc...");
    clock.tasks_hfclkstart.write(|w| unsafe { w.bits(1) });
    while clock.events_hfclkstarted.read().bits() != 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;

    // Create embassy-usb DeviceBuilder using the driver and config.
    // It needs some buffers for building the descriptors.
    let mut device_descriptor = [0; 256];
    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 request_handler = MyRequestHandler {};

    let mut state = State::new();

    let mut builder = Builder::new(
        driver,
        config,
        &mut device_descriptor,
        &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(&request_handler),
        poll_ms: 60,
        max_packet_size: 8,
    };

    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;
            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;
}