mirror of
https://github.com/embassy-rs/embassy.git
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hal-common: remove Pin in PeripheralMutex
This commit is contained in:
Dario Nieuwenhuis
parent
de207764ae
commit
af87031d62
@ -1,6 +1,5 @@
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use core::cell::UnsafeCell;
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use core::marker::{PhantomData, PhantomPinned};
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use core::pin::Pin;
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use core::marker::PhantomData;
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use core::mem::MaybeUninit;
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use cortex_m::peripheral::scb::VectActive;
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use cortex_m::peripheral::{NVIC, SCB};
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@ -10,23 +9,23 @@ use embassy::interrupt::{Interrupt, InterruptExt};
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///
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/// It needs to be `Send` because `&mut` references are sent back and forth between the 'thread' which owns the `PeripheralMutex` and the interrupt,
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/// and `&mut T` is only `Send` where `T: Send`.
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///
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/// It also requires `'static` to be used safely with `PeripheralMutex::register_interrupt`,
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/// because although `Pin` guarantees that the memory of the state won't be invalidated,
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/// it doesn't guarantee that the lifetime will last.
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pub trait PeripheralState: Send {
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type Interrupt: Interrupt;
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fn on_interrupt(&mut self);
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}
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pub struct PeripheralMutex<S: PeripheralState> {
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state: UnsafeCell<S>,
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pub struct StateStorage<S>(MaybeUninit<S>);
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irq_setup_done: bool,
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impl<S> StateStorage<S> {
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pub fn new() -> Self {
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Self(MaybeUninit::uninit())
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}
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}
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pub struct PeripheralMutex<'a, S: PeripheralState> {
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state: *mut S,
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_phantom: PhantomData<&'a mut S>,
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irq: S::Interrupt,
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_not_send: PhantomData<*mut ()>,
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_pinned: PhantomPinned,
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}
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/// Whether `irq` can be preempted by the current interrupt.
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@ -50,58 +49,45 @@ pub(crate) fn can_be_preempted(irq: &impl Interrupt) -> bool {
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}
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}
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impl<S: PeripheralState + 'static> PeripheralMutex<S> {
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/// Registers `on_interrupt` as the wrapped interrupt's interrupt handler and enables it.
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impl<'a, S: PeripheralState> PeripheralMutex<'a, S> {
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/// Create a new `PeripheralMutex` wrapping `irq`, with the initial state `state`.
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///
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/// This requires this `PeripheralMutex`'s `PeripheralState` to live for `'static`,
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/// because `Pin` only guarantees that it's memory won't be repurposed,
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/// not that it's lifetime will last.
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/// self requires `state` to live for `'static`, because if the `PeripheralMutex` is leaked, the
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/// interrupt won't be disabled, which may try accessing the state at any time. To use non-`'static`
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/// state, see [`Self::new_unchecked`].
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///
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/// To use non-`'static` `PeripheralState`, use the unsafe `register_interrupt_unchecked`.
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///
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/// Note: `'static` doesn't mean it _has_ to live for the entire program, like an `&'static T`;
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/// it just means it _can_ live for the entire program - for example, `u8` lives for `'static`.
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pub fn register_interrupt(self: Pin<&mut Self>) {
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// SAFETY: `S: 'static`, so there's no way it's lifetime can expire.
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unsafe { self.register_interrupt_unchecked() }
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}
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/// Registers `on_interrupt` as the `irq`'s handler, and enables it.
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pub fn new(storage: &'a mut StateStorage<S>, state: S, irq: S::Interrupt) -> Self
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where
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'a: 'static,
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{
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// safety: safe because state is `'static`.
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unsafe { Self::new_unchecked(storage, state, irq) }
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}
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impl<S: PeripheralState> PeripheralMutex<S> {
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/// Create a new `PeripheralMutex` wrapping `irq`, with the initial state `state`.
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pub fn new(state: S, irq: S::Interrupt) -> Self {
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/// Create a `PeripheralMutex` without requiring the state is `'static`.
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///
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/// See also [`Self::new`].
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///
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/// # Safety
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/// The created instance must not be leaked (its `drop` must run).
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pub unsafe fn new_unchecked(
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storage: &'a mut StateStorage<S>,
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state: S,
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irq: S::Interrupt,
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) -> Self {
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if can_be_preempted(&irq) {
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panic!("`PeripheralMutex` cannot be created in an interrupt with higher priority than the interrupt it wraps");
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}
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Self {
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irq,
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irq_setup_done: false,
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let state_ptr = storage.0.as_mut_ptr();
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state: UnsafeCell::new(state),
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_not_send: PhantomData,
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_pinned: PhantomPinned,
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}
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}
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// Safety: The pointer is valid and not used by anyone else
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// because we have the `&mut StateStorage`.
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state_ptr.write(state);
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/// Registers `on_interrupt` as the wrapped interrupt's interrupt handler and enables it.
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///
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/// # Safety
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/// The lifetime of any data in `PeripheralState` that is accessed by the interrupt handler
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/// must not end without `Drop` being called on this `PeripheralMutex`.
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///
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/// This can be accomplished by either not accessing any data with a lifetime in `on_interrupt`,
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/// or making sure that nothing like `mem::forget` is used on the `PeripheralMutex`.
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// TODO: this name isn't the best.
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pub unsafe fn register_interrupt_unchecked(self: Pin<&mut Self>) {
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let this = self.get_unchecked_mut();
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if this.irq_setup_done {
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return;
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}
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this.irq.disable();
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this.irq.set_handler(|p| {
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irq.disable();
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irq.set_handler(|p| {
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// Safety: it's OK to get a &mut to the state, since
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// - We checked that the thread owning the `PeripheralMutex` can't preempt us in `new`.
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// Interrupts' priorities can only be changed with raw embassy `Interrupts`,
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@ -110,23 +96,24 @@ impl<S: PeripheralState> PeripheralMutex<S> {
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let state = unsafe { &mut *(p as *mut S) };
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state.on_interrupt();
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});
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this.irq
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.set_handler_context((&mut this.state) as *mut _ as *mut ());
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this.irq.enable();
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irq.set_handler_context(state_ptr as *mut ());
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irq.enable();
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this.irq_setup_done = true;
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Self {
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irq,
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state: state_ptr,
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_phantom: PhantomData,
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}
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}
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pub fn with<R>(self: Pin<&mut Self>, f: impl FnOnce(&mut S) -> R) -> R {
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let this = unsafe { self.get_unchecked_mut() };
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this.irq.disable();
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pub fn with<R>(&mut self, f: impl FnOnce(&mut S) -> R) -> R {
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self.irq.disable();
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// Safety: it's OK to get a &mut to the state, since the irq is disabled.
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let state = unsafe { &mut *this.state.get() };
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let state = unsafe { &mut *self.state };
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let r = f(state);
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this.irq.enable();
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self.irq.enable();
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r
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}
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@ -152,9 +139,14 @@ impl<S: PeripheralState> PeripheralMutex<S> {
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}
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}
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impl<S: PeripheralState> Drop for PeripheralMutex<S> {
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impl<'a, S: PeripheralState> Drop for PeripheralMutex<'a, S> {
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fn drop(&mut self) {
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self.irq.disable();
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self.irq.remove_handler();
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// safety:
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// - we initialized the state in `new`, so we know it's initialized.
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// - the irq is disabled, so it won't preempt us while dropping.
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unsafe { self.state.drop_in_place() }
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}
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}
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@ -9,14 +9,31 @@ use usb_device::device::UsbDevice;
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mod cdc_acm;
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pub mod usb_serial;
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use crate::peripheral::{PeripheralMutex, PeripheralState};
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use crate::peripheral::{PeripheralMutex, PeripheralState, StateStorage};
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use embassy::interrupt::Interrupt;
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use usb_serial::{ReadInterface, UsbSerial, WriteInterface};
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/// Marker trait to mark an interrupt to be used with the [`Usb`] abstraction.
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pub unsafe trait USBInterrupt: Interrupt + Send {}
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pub(crate) struct State<'bus, B, T, I>
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pub struct State<'bus, B, T, I>(StateStorage<StateInner<'bus, B, T, I>>)
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where
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B: UsbBus,
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T: ClassSet<B>,
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I: USBInterrupt;
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impl<'bus, B, T, I> State<'bus, B, T, I>
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where
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B: UsbBus,
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T: ClassSet<B>,
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I: USBInterrupt,
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{
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pub fn new() -> Self {
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Self(StateStorage::new())
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}
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}
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pub(crate) struct StateInner<'bus, B, T, I>
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where
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B: UsbBus,
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T: ClassSet<B>,
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@ -34,7 +51,7 @@ where
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I: USBInterrupt,
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{
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// Don't you dare moving out `PeripheralMutex`
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inner: RefCell<PeripheralMutex<State<'bus, B, T, I>>>,
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inner: RefCell<PeripheralMutex<'bus, StateInner<'bus, B, T, I>>>,
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}
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impl<'bus, B, T, I> Usb<'bus, B, T, I>
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@ -43,30 +60,22 @@ where
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T: ClassSet<B>,
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I: USBInterrupt,
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{
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pub fn new<S: IntoClassSet<B, T>>(device: UsbDevice<'bus, B>, class_set: S, irq: I) -> Self {
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let state = State {
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pub fn new<S: IntoClassSet<B, T>>(
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state: &'bus mut State<'bus, B, T, I>,
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device: UsbDevice<'bus, B>,
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class_set: S,
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irq: I,
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) -> Self {
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let initial_state = StateInner {
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device,
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classes: class_set.into_class_set(),
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_interrupt: PhantomData,
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};
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let mutex = PeripheralMutex::new(state, irq);
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let mutex = unsafe { PeripheralMutex::new_unchecked(&mut state.0, initial_state, irq) };
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Self {
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inner: RefCell::new(mutex),
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}
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}
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/// # Safety
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/// The `UsbDevice` passed to `Self::new` must not be dropped without calling `Drop` on this `Usb` first.
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pub unsafe fn start(self: Pin<&mut Self>) {
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let this = self.get_unchecked_mut();
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let mut mutex = this.inner.borrow_mut();
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let mutex = Pin::new_unchecked(&mut *mutex);
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// Use inner to register the irq
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// SAFETY: the safety contract of this function makes sure the `UsbDevice` won't be invalidated
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// without the `PeripheralMutex` being dropped.
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mutex.register_interrupt_unchecked();
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}
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}
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impl<'bus, 'c, B, T, I> Usb<'bus, B, T, I>
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@ -129,7 +138,7 @@ where
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}
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}
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impl<'bus, B, T, I> PeripheralState for State<'bus, B, T, I>
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impl<'bus, B, T, I> PeripheralState for StateInner<'bus, B, T, I>
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where
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B: UsbBus,
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T: ClassSet<B>,
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@ -10,9 +10,10 @@ use usb_device::class_prelude::*;
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use usb_device::UsbError;
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use super::cdc_acm::CdcAcmClass;
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use super::StateInner;
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use crate::peripheral::PeripheralMutex;
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use crate::ring_buffer::RingBuffer;
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use crate::usb::{ClassSet, SerialState, State, USBInterrupt};
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use crate::usb::{ClassSet, SerialState, USBInterrupt};
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pub struct ReadInterface<'a, 'bus, 'c, I, B, T, INT>
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where
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@ -22,7 +23,7 @@ where
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INT: USBInterrupt,
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{
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// Don't you dare moving out `PeripheralMutex`
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pub(crate) inner: &'a RefCell<PeripheralMutex<State<'bus, B, T, INT>>>,
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pub(crate) inner: &'a RefCell<PeripheralMutex<'bus, StateInner<'bus, B, T, INT>>>,
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pub(crate) _buf_lifetime: PhantomData<&'c T>,
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pub(crate) _index: PhantomData<I>,
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}
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@ -39,7 +40,7 @@ where
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INT: USBInterrupt,
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{
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// Don't you dare moving out `PeripheralMutex`
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pub(crate) inner: &'a RefCell<PeripheralMutex<State<'bus, B, T, INT>>>,
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pub(crate) inner: &'a RefCell<PeripheralMutex<'bus, StateInner<'bus, B, T, INT>>>,
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pub(crate) _buf_lifetime: PhantomData<&'c T>,
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pub(crate) _index: PhantomData<I>,
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}
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@ -54,7 +55,6 @@ where
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fn poll_fill_buf(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<io::Result<&[u8]>> {
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let this = self.get_mut();
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let mut mutex = this.inner.borrow_mut();
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let mutex = unsafe { Pin::new_unchecked(&mut *mutex) };
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mutex.with(|state| {
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let serial = state.classes.get_serial();
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let serial = Pin::new(serial);
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@ -76,7 +76,6 @@ where
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fn consume(self: Pin<&mut Self>, amt: usize) {
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let this = self.get_mut();
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let mut mutex = this.inner.borrow_mut();
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let mutex = unsafe { Pin::new_unchecked(&mut *mutex) };
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mutex.with(|state| {
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let serial = state.classes.get_serial();
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let serial = Pin::new(serial);
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@ -100,7 +99,6 @@ where
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) -> Poll<io::Result<usize>> {
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let this = self.get_mut();
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let mut mutex = this.inner.borrow_mut();
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let mutex = unsafe { Pin::new_unchecked(&mut *mutex) };
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mutex.with(|state| {
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let serial = state.classes.get_serial();
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let serial = Pin::new(serial);
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@ -7,7 +7,7 @@ use core::task::{Context, Poll};
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use embassy::interrupt::InterruptExt;
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use embassy::io::{AsyncBufRead, AsyncWrite, Result};
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use embassy::util::{Unborrow, WakerRegistration};
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use embassy_hal_common::peripheral::{PeripheralMutex, PeripheralState};
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use embassy_hal_common::peripheral::{PeripheralMutex, PeripheralState, StateStorage};
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use embassy_hal_common::ring_buffer::RingBuffer;
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use embassy_hal_common::{low_power_wait_until, unborrow};
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@ -35,7 +35,14 @@ enum TxState {
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Transmitting(usize),
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}
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struct State<'d, U: UarteInstance, T: TimerInstance> {
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pub struct State<'d, U: UarteInstance, T: TimerInstance>(StateStorage<StateInner<'d, U, T>>);
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impl<'d, U: UarteInstance, T: TimerInstance> State<'d, U, T> {
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pub fn new() -> Self {
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Self(StateStorage::new())
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}
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}
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struct StateInner<'d, U: UarteInstance, T: TimerInstance> {
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phantom: PhantomData<&'d mut U>,
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timer: Timer<'d, T>,
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_ppi_ch1: Ppi<'d, AnyConfigurableChannel>,
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@ -51,20 +58,16 @@ struct State<'d, U: UarteInstance, T: TimerInstance> {
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}
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/// Interface to a UARTE instance
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///
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/// This is a very basic interface that comes with the following limitations:
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/// - The UARTE instances share the same address space with instances of UART.
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/// You need to make sure that conflicting instances
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/// are disabled before using `Uarte`. See product specification:
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/// - nrf52832: Section 15.2
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/// - nrf52840: Section 6.1.2
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pub struct BufferedUarte<'d, U: UarteInstance, T: TimerInstance> {
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inner: PeripheralMutex<State<'d, U, T>>,
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inner: PeripheralMutex<'d, StateInner<'d, U, T>>,
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}
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impl<'d, U: UarteInstance, T: TimerInstance> Unpin for BufferedUarte<'d, U, T> {}
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impl<'d, U: UarteInstance, T: TimerInstance> BufferedUarte<'d, U, T> {
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/// unsafe: may not leak self or futures
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pub unsafe fn new(
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state: &'d mut State<'d, U, T>,
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_uarte: impl Unborrow<Target = U> + 'd,
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timer: impl Unborrow<Target = T> + 'd,
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ppi_ch1: impl Unborrow<Target = impl ConfigurableChannel> + 'd,
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@ -152,9 +155,7 @@ impl<'d, U: UarteInstance, T: TimerInstance> BufferedUarte<'d, U, T> {
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ppi_ch2.set_task(Task::from_reg(&r.tasks_stoprx));
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ppi_ch2.enable();
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BufferedUarte {
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inner: PeripheralMutex::new(
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State {
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let initial_state = StateInner {
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phantom: PhantomData,
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timer,
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_ppi_ch1: ppi_ch1,
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@ -167,16 +168,15 @@ impl<'d, U: UarteInstance, T: TimerInstance> BufferedUarte<'d, U, T> {
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tx: RingBuffer::new(tx_buffer),
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tx_state: TxState::Idle,
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tx_waker: WakerRegistration::new(),
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},
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irq,
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),
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};
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Self {
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inner: PeripheralMutex::new_unchecked(&mut state.0, initial_state, irq),
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}
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}
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pub fn set_baudrate(self: Pin<&mut Self>, baudrate: Baudrate) {
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let mut inner = self.inner();
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unsafe { inner.as_mut().register_interrupt_unchecked() }
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inner.with(|state| {
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pub fn set_baudrate(&mut self, baudrate: Baudrate) {
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self.inner.with(|state| {
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let r = U::regs();
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let timeout = 0x8000_0000 / (baudrate as u32 / 40);
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@ -186,17 +186,11 @@ impl<'d, U: UarteInstance, T: TimerInstance> BufferedUarte<'d, U, T> {
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r.baudrate.write(|w| w.baudrate().variant(baudrate));
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});
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}
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fn inner(self: Pin<&mut Self>) -> Pin<&mut PeripheralMutex<State<'d, U, T>>> {
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unsafe { Pin::new_unchecked(&mut self.get_unchecked_mut().inner) }
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}
|
||||
}
|
||||
|
||||
impl<'d, U: UarteInstance, T: TimerInstance> AsyncBufRead for BufferedUarte<'d, U, T> {
|
||||
fn poll_fill_buf(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<&[u8]>> {
|
||||
let mut inner = self.inner();
|
||||
unsafe { inner.as_mut().register_interrupt_unchecked() }
|
||||
inner.with(|state| {
|
||||
fn poll_fill_buf(mut self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Result<&[u8]>> {
|
||||
self.inner.with(|state| {
|
||||
// Conservative compiler fence to prevent optimizations that do not
|
||||
// take in to account actions by DMA. The fence has been placed here,
|
||||
// before any DMA action has started
|
||||
@ -218,22 +212,22 @@ impl<'d, U: UarteInstance, T: TimerInstance> AsyncBufRead for BufferedUarte<'d,
|
||||
})
|
||||
}
|
||||
|
||||
fn consume(self: Pin<&mut Self>, amt: usize) {
|
||||
let mut inner = self.inner();
|
||||
unsafe { inner.as_mut().register_interrupt_unchecked() }
|
||||
inner.as_mut().with(|state| {
|
||||
fn consume(mut self: Pin<&mut Self>, amt: usize) {
|
||||
self.inner.with(|state| {
|
||||
trace!("consume {:?}", amt);
|
||||
state.rx.pop(amt);
|
||||
});
|
||||
inner.pend();
|
||||
self.inner.pend();
|
||||
}
|
||||
}
|
||||
|
||||
impl<'d, U: UarteInstance, T: TimerInstance> AsyncWrite for BufferedUarte<'d, U, T> {
|
||||
fn poll_write(self: Pin<&mut Self>, cx: &mut Context<'_>, buf: &[u8]) -> Poll<Result<usize>> {
|
||||
let mut inner = self.inner();
|
||||
unsafe { inner.as_mut().register_interrupt_unchecked() }
|
||||
let poll = inner.as_mut().with(|state| {
|
||||
fn poll_write(
|
||||
mut self: Pin<&mut Self>,
|
||||
cx: &mut Context<'_>,
|
||||
buf: &[u8],
|
||||
) -> Poll<Result<usize>> {
|
||||
let poll = self.inner.with(|state| {
|
||||
trace!("poll_write: {:?}", buf.len());
|
||||
|
||||
let tx_buf = state.tx.push_buf();
|
||||
@ -257,13 +251,13 @@ impl<'d, U: UarteInstance, T: TimerInstance> AsyncWrite for BufferedUarte<'d, U,
|
||||
Poll::Ready(Ok(n))
|
||||
});
|
||||
|
||||
inner.pend();
|
||||
self.inner.pend();
|
||||
|
||||
poll
|
||||
}
|
||||
}
|
||||
|
||||
impl<'a, U: UarteInstance, T: TimerInstance> Drop for State<'a, U, T> {
|
||||
impl<'a, U: UarteInstance, T: TimerInstance> Drop for StateInner<'a, U, T> {
|
||||
fn drop(&mut self) {
|
||||
let r = U::regs();
|
||||
|
||||
@ -285,7 +279,7 @@ impl<'a, U: UarteInstance, T: TimerInstance> Drop for State<'a, U, T> {
|
||||
}
|
||||
}
|
||||
|
||||
impl<'a, U: UarteInstance, T: TimerInstance> PeripheralState for State<'a, U, T> {
|
||||
impl<'a, U: UarteInstance, T: TimerInstance> PeripheralState for StateInner<'a, U, T> {
|
||||
type Interrupt = U::Interrupt;
|
||||
fn on_interrupt(&mut self) {
|
||||
trace!("irq: start");
|
||||
|
||||
@ -1,10 +1,9 @@
|
||||
use core::marker::PhantomData;
|
||||
use core::pin::Pin;
|
||||
use core::sync::atomic::{fence, Ordering};
|
||||
use core::task::Waker;
|
||||
|
||||
use embassy::util::{AtomicWaker, Unborrow};
|
||||
use embassy_hal_common::peripheral::{PeripheralMutex, PeripheralState};
|
||||
use embassy_hal_common::peripheral::{PeripheralMutex, PeripheralState, StateStorage};
|
||||
use embassy_hal_common::unborrow;
|
||||
use embassy_net::{Device, DeviceCapabilities, LinkState, PacketBuf, MTU};
|
||||
|
||||
@ -19,8 +18,14 @@ mod descriptors;
|
||||
use super::{StationManagement, PHY};
|
||||
use descriptors::DescriptorRing;
|
||||
|
||||
pub struct State<'d, const TX: usize, const RX: usize>(StateStorage<Inner<'d, TX, RX>>);
|
||||
impl<'d, const TX: usize, const RX: usize> State<'d, TX, RX> {
|
||||
pub fn new() -> Self {
|
||||
Self(StateStorage::new())
|
||||
}
|
||||
}
|
||||
pub struct Ethernet<'d, P: PHY, const TX: usize, const RX: usize> {
|
||||
state: PeripheralMutex<Inner<'d, TX, RX>>,
|
||||
state: PeripheralMutex<'d, Inner<'d, TX, RX>>,
|
||||
pins: [AnyPin; 9],
|
||||
_phy: P,
|
||||
clock_range: u8,
|
||||
@ -30,6 +35,7 @@ pub struct Ethernet<'d, P: PHY, const TX: usize, const RX: usize> {
|
||||
|
||||
impl<'d, P: PHY, const TX: usize, const RX: usize> Ethernet<'d, P, TX, RX> {
|
||||
pub fn new(
|
||||
state: &'d mut State<'d, TX, RX>,
|
||||
peri: impl Unborrow<Target = peripherals::ETH> + 'd,
|
||||
interrupt: impl Unborrow<Target = crate::interrupt::ETH> + 'd,
|
||||
ref_clk: impl Unborrow<Target = impl RefClkPin> + 'd,
|
||||
@ -72,7 +78,7 @@ impl<'d, P: PHY, const TX: usize, const RX: usize> Ethernet<'d, P, TX, RX> {
|
||||
tx_en.configure();
|
||||
|
||||
let inner = Inner::new(peri);
|
||||
let state = PeripheralMutex::new(inner, interrupt);
|
||||
let state = unsafe { PeripheralMutex::new_unchecked(&mut state.0, inner, interrupt) };
|
||||
|
||||
// NOTE(unsafe) We have exclusive access to the registers
|
||||
unsafe {
|
||||
@ -145,24 +151,16 @@ impl<'d, P: PHY, const TX: usize, const RX: usize> Ethernet<'d, P, TX, RX> {
|
||||
tx_en.degrade(),
|
||||
];
|
||||
|
||||
Self {
|
||||
let mut this = Self {
|
||||
state,
|
||||
pins,
|
||||
_phy: phy,
|
||||
clock_range,
|
||||
phy_addr,
|
||||
mac_addr,
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
pub fn init(self: Pin<&mut Self>) {
|
||||
// NOTE(unsafe) We won't move this
|
||||
let this = unsafe { self.get_unchecked_mut() };
|
||||
let mut mutex = unsafe { Pin::new_unchecked(&mut this.state) };
|
||||
// SAFETY: The lifetime of `Inner` is only due to `PhantomData`; it isn't actually referencing any data with that lifetime.
|
||||
unsafe { mutex.as_mut().register_interrupt_unchecked() }
|
||||
|
||||
mutex.with(|s| {
|
||||
this.state.with(|s| {
|
||||
s.desc_ring.init();
|
||||
|
||||
fence(Ordering::SeqCst);
|
||||
@ -189,8 +187,10 @@ impl<'d, P: PHY, const TX: usize, const RX: usize> Ethernet<'d, P, TX, RX> {
|
||||
});
|
||||
}
|
||||
});
|
||||
P::phy_reset(this);
|
||||
P::phy_init(this);
|
||||
P::phy_reset(&mut this);
|
||||
P::phy_init(&mut this);
|
||||
|
||||
this
|
||||
}
|
||||
}
|
||||
|
||||
@ -232,29 +232,17 @@ unsafe impl<'d, P: PHY, const TX: usize, const RX: usize> StationManagement
|
||||
}
|
||||
}
|
||||
|
||||
impl<'d, P: PHY, const TX: usize, const RX: usize> Device for Pin<&mut Ethernet<'d, P, TX, RX>> {
|
||||
impl<'d, P: PHY, const TX: usize, const RX: usize> Device for Ethernet<'d, P, TX, RX> {
|
||||
fn is_transmit_ready(&mut self) -> bool {
|
||||
// NOTE(unsafe) We won't move out of self
|
||||
let this = unsafe { self.as_mut().get_unchecked_mut() };
|
||||
let mutex = unsafe { Pin::new_unchecked(&mut this.state) };
|
||||
|
||||
mutex.with(|s| s.desc_ring.tx.available())
|
||||
self.state.with(|s| s.desc_ring.tx.available())
|
||||
}
|
||||
|
||||
fn transmit(&mut self, pkt: PacketBuf) {
|
||||
// NOTE(unsafe) We won't move out of self
|
||||
let this = unsafe { self.as_mut().get_unchecked_mut() };
|
||||
let mutex = unsafe { Pin::new_unchecked(&mut this.state) };
|
||||
|
||||
mutex.with(|s| unwrap!(s.desc_ring.tx.transmit(pkt)));
|
||||
self.state.with(|s| unwrap!(s.desc_ring.tx.transmit(pkt)));
|
||||
}
|
||||
|
||||
fn receive(&mut self) -> Option<PacketBuf> {
|
||||
// NOTE(unsafe) We won't move out of self
|
||||
let this = unsafe { self.as_mut().get_unchecked_mut() };
|
||||
let mutex = unsafe { Pin::new_unchecked(&mut this.state) };
|
||||
|
||||
mutex.with(|s| s.desc_ring.rx.pop_packet())
|
||||
self.state.with(|s| s.desc_ring.rx.pop_packet())
|
||||
}
|
||||
|
||||
fn register_waker(&mut self, waker: &Waker) {
|
||||
@ -269,10 +257,7 @@ impl<'d, P: PHY, const TX: usize, const RX: usize> Device for Pin<&mut Ethernet<
|
||||
}
|
||||
|
||||
fn link_state(&mut self) -> LinkState {
|
||||
// NOTE(unsafe) We won't move out of self
|
||||
let this = unsafe { self.as_mut().get_unchecked_mut() };
|
||||
|
||||
if P::poll_link(this) {
|
||||
if P::poll_link(self) {
|
||||
LinkState::Up
|
||||
} else {
|
||||
LinkState::Down
|
||||
@ -280,10 +265,7 @@ impl<'d, P: PHY, const TX: usize, const RX: usize> Device for Pin<&mut Ethernet<
|
||||
}
|
||||
|
||||
fn ethernet_address(&mut self) -> [u8; 6] {
|
||||
// NOTE(unsafe) We won't move out of self
|
||||
let this = unsafe { self.as_mut().get_unchecked_mut() };
|
||||
|
||||
this.mac_addr
|
||||
self.mac_addr
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
@ -11,6 +11,7 @@ mod example_common;
|
||||
use defmt::panic;
|
||||
use embassy::executor::Spawner;
|
||||
use embassy::io::{AsyncBufReadExt, AsyncWriteExt};
|
||||
use embassy_nrf::buffered_uarte::State;
|
||||
use embassy_nrf::gpio::NoPin;
|
||||
use embassy_nrf::{buffered_uarte::BufferedUarte, interrupt, uarte, Peripherals};
|
||||
use example_common::*;
|
||||
@ -26,8 +27,10 @@ async fn main(_spawner: Spawner, p: Peripherals) {
|
||||
let mut rx_buffer = [0u8; 4096];
|
||||
|
||||
let irq = interrupt::take!(UARTE0_UART0);
|
||||
let mut state = State::new();
|
||||
let u = unsafe {
|
||||
BufferedUarte::new(
|
||||
&mut state,
|
||||
p.UARTE0,
|
||||
p.TIMER0,
|
||||
p.PPI_CH0,
|
||||
|
||||
@ -6,7 +6,6 @@
|
||||
#![feature(impl_trait_in_bindings)]
|
||||
#![feature(type_alias_impl_trait)]
|
||||
|
||||
use core::pin::Pin;
|
||||
use core::sync::atomic::{AtomicUsize, Ordering};
|
||||
|
||||
use cortex_m_rt::entry;
|
||||
@ -22,7 +21,7 @@ use embassy_net::{
|
||||
};
|
||||
use embassy_stm32::clock::{Alarm, Clock};
|
||||
use embassy_stm32::eth::lan8742a::LAN8742A;
|
||||
use embassy_stm32::eth::Ethernet;
|
||||
use embassy_stm32::eth::{Ethernet, State};
|
||||
use embassy_stm32::rcc::{Config as RccConfig, Rcc};
|
||||
use embassy_stm32::rng::Random;
|
||||
use embassy_stm32::time::Hertz;
|
||||
@ -42,7 +41,7 @@ defmt::timestamp! {"{=u64}", {
|
||||
|
||||
#[embassy::task]
|
||||
async fn main_task(
|
||||
device: &'static mut Pin<&'static mut Ethernet<'static, LAN8742A, 4, 4>>,
|
||||
device: &'static mut Ethernet<'static, LAN8742A, 4, 4>,
|
||||
config: &'static mut StaticConfigurator,
|
||||
spawner: Spawner,
|
||||
) {
|
||||
@ -99,8 +98,8 @@ static mut RNG_INST: Option<Random<RNG>> = None;
|
||||
static EXECUTOR: Forever<Executor> = Forever::new();
|
||||
static TIMER_RTC: Forever<Clock<TIM2>> = Forever::new();
|
||||
static ALARM: Forever<Alarm<TIM2>> = Forever::new();
|
||||
static STATE: Forever<State<'static, 4, 4>> = Forever::new();
|
||||
static ETH: Forever<Ethernet<'static, LAN8742A, 4, 4>> = Forever::new();
|
||||
static DEVICE: Forever<Pin<&'static mut Ethernet<'static, LAN8742A, 4, 4>>> = Forever::new();
|
||||
static CONFIG: Forever<StaticConfigurator> = Forever::new();
|
||||
static NET_RESOURCES: Forever<StackResources<1, 2, 8>> = Forever::new();
|
||||
|
||||
@ -135,15 +134,12 @@ fn main() -> ! {
|
||||
|
||||
let eth_int = interrupt_take!(ETH);
|
||||
let mac_addr = [0x10; 6];
|
||||
let state = STATE.put(State::new());
|
||||
let eth = ETH.put(Ethernet::new(
|
||||
p.ETH, eth_int, p.PA1, p.PA2, p.PC1, p.PA7, p.PC4, p.PC5, p.PB12, p.PB13, p.PB11, LAN8742A,
|
||||
mac_addr, 1,
|
||||
state, p.ETH, eth_int, p.PA1, p.PA2, p.PC1, p.PA7, p.PC4, p.PC5, p.PB12, p.PB13, p.PB11,
|
||||
LAN8742A, mac_addr, 1,
|
||||
));
|
||||
|
||||
// NOTE(unsafe) This thing is a &'static
|
||||
let net_device = DEVICE.put(unsafe { Pin::new_unchecked(eth) });
|
||||
net_device.as_mut().init();
|
||||
|
||||
let config = StaticConfigurator::new(NetConfig {
|
||||
address: Ipv4Cidr::new(Ipv4Address::new(192, 168, 0, 61), 24),
|
||||
dns_servers: Vec::new(),
|
||||
@ -156,6 +152,6 @@ fn main() -> ! {
|
||||
executor.set_alarm(alarm);
|
||||
|
||||
executor.run(move |spawner| {
|
||||
unwrap!(spawner.spawn(main_task(net_device, config, spawner)));
|
||||
unwrap!(spawner.spawn(main_task(eth, config, spawner)));
|
||||
})
|
||||
}
|
||||
|
||||
Loading…
Reference in New Issue
Block a user