embassy/examples/nrf/src/bin/usb/main.rs

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2022-03-09 01:34:35 +01:00
#![no_std]
#![no_main]
#![feature(type_alias_impl_trait)]
#[path = "../../example_common.rs"]
mod example_common;
mod cdc_acm;
use core::mem;
use defmt::*;
use embassy::executor::Spawner;
use embassy_nrf::interrupt;
use embassy_nrf::pac;
use embassy_nrf::usb::{self, Driver};
use embassy_nrf::Peripherals;
use embassy_usb::{Config, UsbDeviceBuilder};
use crate::cdc_acm::CdcAcmClass;
#[embassy::main]
async fn main(_spawner: Spawner, p: Peripherals) {
let clock: pac::CLOCK = unsafe { mem::transmute(()) };
let power: pac::POWER = unsafe { mem::transmute(()) };
info!("Enabling ext hfosc...");
clock.tasks_hfclkstart.write(|w| unsafe { w.bits(1) });
while clock.events_hfclkstarted.read().bits() != 1 {}
info!("Waiting for vbus...");
while !power.usbregstatus.read().vbusdetect().is_vbus_present() {}
info!("vbus OK");
let irq = interrupt::take!(USBD);
let driver = Driver::new(p.USBD, irq);
let config = Config::new(0xc0de, 0xcafe);
let mut device_descriptor = [0; 256];
let mut config_descriptor = [0; 256];
let mut bos_descriptor = [0; 256];
let mut builder = UsbDeviceBuilder::new(
driver,
config,
&mut device_descriptor,
&mut config_descriptor,
&mut bos_descriptor,
);
let mut class = CdcAcmClass::new(&mut builder, 64);
let mut usb = builder.build();
usb.run().await;
}