69 lines
1.6 KiB
Rust
69 lines
1.6 KiB
Rust
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#![macro_use]
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use core::marker::PhantomData;
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use embassy::util::Unborrow;
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use crate::interrupt::Interrupt;
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use crate::pac;
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use nrf_usbd::{UsbPeripheral, Usbd};
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use usb_device::bus::UsbBusAllocator;
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// todo using different type than Usb because T isnt Send
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pub struct UsbBus;
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unsafe impl UsbPeripheral for UsbBus {
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// todo hardcoding
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const REGISTERS: *const () = crate::pac::USBD::ptr() as *const ();
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}
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impl UsbBus {
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pub fn new() -> UsbBusAllocator<Usbd<UsbBus>> {
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Usbd::new(UsbBus)
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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 struct Usb<'d, T: Instance> {
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phantom: PhantomData<&'d mut T>,
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}
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impl<'d, T: Instance> Usb<'d, T> {
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#[allow(unused_unsafe)]
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pub fn new(_usb: impl Unborrow<Target = T> + 'd) -> Self {
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let r = T::regs();
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Self {
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phantom: PhantomData,
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}
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}
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fn on_interrupt(_: *mut ()) {
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let r = T::regs();
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}
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}
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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 {
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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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