66 lines
1.6 KiB
Rust
66 lines
1.6 KiB
Rust
#![macro_use]
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use crate::interrupt::Interrupt;
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use crate::pac;
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use core::marker::PhantomData;
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use embassy::util::Unborrow;
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use nrf_usbd::{UsbPeripheral, Usbd};
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use usb_device::bus::UsbBusAllocator;
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pub use embassy_hal_common::usb::*;
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pub struct UsbBus<'d, T: Instance> {
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phantom: PhantomData<&'d mut T>,
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}
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unsafe impl<'d, T: Instance> UsbPeripheral for UsbBus<'d, T> {
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// todo how to use T::regs
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const REGISTERS: *const () = pac::USBD::ptr() as *const ();
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}
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impl<'d, T: Instance> UsbBus<'d, T> {
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pub fn new(_usb: impl Unborrow<Target = T> + 'd) -> UsbBusAllocator<Usbd<UsbBus<'d, T>>> {
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let r = T::regs();
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r.intenset.write(|w| {
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w.sof().set_bit();
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w.usbevent().set_bit();
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w.ep0datadone().set_bit();
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w.ep0setup().set_bit();
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w.usbreset().set_bit()
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});
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Usbd::new(UsbBus {
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phantom: PhantomData,
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})
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}
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}
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unsafe impl embassy_hal_common::usb::USBInterrupt for crate::interrupt::USBD {}
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pub(crate) mod sealed {
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use super::*;
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pub trait Instance {
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fn regs() -> &'static pac::usbd::RegisterBlock;
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}
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}
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pub trait Instance: Unborrow<Target = Self> + sealed::Instance + 'static + Send {
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type Interrupt: Interrupt;
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}
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macro_rules! impl_usb {
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($type:ident, $pac_type:ident, $irq:ident) => {
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impl crate::usb::sealed::Instance for peripherals::$type {
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fn regs() -> &'static pac::usbd::RegisterBlock {
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unsafe { &*pac::$pac_type::ptr() }
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}
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}
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impl crate::usb::Instance for peripherals::$type {
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type Interrupt = crate::interrupt::$irq;
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}
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};
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}
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