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|
use core::cell::RefCell;
use core::future::{Future, poll_fn};
use core::task::Poll;
use embassy_sync::waitqueue::WakerRegistration;
use crate::fmt::Bytes;
#[derive(Clone, Copy)]
pub struct PendingIoctl {
pub buf: *mut [u8],
pub req_len: usize,
}
#[derive(Clone, Copy)]
enum IoctlState {
Pending(PendingIoctl),
Sent { buf: *mut [u8] },
Done { resp_len: usize },
}
pub struct Shared(RefCell<SharedInner>);
struct SharedInner {
ioctl: IoctlState,
is_init: bool,
is_ota: bool,
control_waker: WakerRegistration,
runner_waker: WakerRegistration,
}
impl Shared {
pub fn new() -> Self {
Self(RefCell::new(SharedInner {
ioctl: IoctlState::Done { resp_len: 0 },
is_init: false,
is_ota: false,
control_waker: WakerRegistration::new(),
runner_waker: WakerRegistration::new(),
}))
}
pub fn ioctl_wait_complete(&self) -> impl Future<Output = usize> + '_ {
poll_fn(|cx| {
let mut this = self.0.borrow_mut();
if let IoctlState::Done { resp_len } = this.ioctl {
Poll::Ready(resp_len)
} else {
this.control_waker.register(cx.waker());
Poll::Pending
}
})
}
pub async fn ioctl_wait_pending(&self) -> PendingIoctl {
let pending = poll_fn(|cx| {
let mut this = self.0.borrow_mut();
if let IoctlState::Pending(pending) = this.ioctl {
Poll::Ready(pending)
} else {
this.runner_waker.register(cx.waker());
Poll::Pending
}
})
.await;
self.0.borrow_mut().ioctl = IoctlState::Sent { buf: pending.buf };
pending
}
pub fn ioctl_cancel(&self) {
self.0.borrow_mut().ioctl = IoctlState::Done { resp_len: 0 };
}
pub async fn ioctl(&self, buf: &mut [u8], req_len: usize) -> usize {
trace!("ioctl req bytes: {:02x}", Bytes(&buf[..req_len]));
{
let mut this = self.0.borrow_mut();
this.ioctl = IoctlState::Pending(PendingIoctl { buf, req_len });
this.runner_waker.wake();
}
self.ioctl_wait_complete().await
}
pub fn ioctl_done(&self, response: &[u8]) {
let mut this = self.0.borrow_mut();
if let IoctlState::Sent { buf } = this.ioctl {
trace!("ioctl resp bytes: {:02x}", Bytes(response));
// TODO fix this
(unsafe { &mut *buf }[..response.len()]).copy_from_slice(response);
this.ioctl = IoctlState::Done {
resp_len: response.len(),
};
this.control_waker.wake();
} else {
warn!("IOCTL Response but no pending Ioctl");
}
}
// ota
pub fn ota_done(&self) {
let mut this = self.0.borrow_mut();
this.is_ota = true;
this.is_init = false;
this.runner_waker.wake();
}
// check if ota is in progress
pub fn is_ota(&self) -> bool {
let this = self.0.borrow();
this.is_ota
}
// // // // // // // // // // // // // // // // // // // //
pub fn init_done(&self) {
let mut this = self.0.borrow_mut();
this.is_init = true;
this.is_ota = false;
this.control_waker.wake();
}
pub fn init_wait(&self) -> impl Future<Output = ()> + '_ {
poll_fn(|cx| {
let mut this = self.0.borrow_mut();
if this.is_init {
Poll::Ready(())
} else {
this.control_waker.register(cx.waker());
Poll::Pending
}
})
}
}
|
