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Merge #708

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708: Unify ReadError and WriteError into EndpointError r=Dirbaio a=Dirbaio

Originally #698, got overwritten in a rebase I think.

Co-authored-by: alexmoon <alex.r.moon@gmail.com>
This commit is contained in:
bors[bot] 2022-04-09 00:06:44 +00:00 committed by GitHub
commit cd6250986a
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7 changed files with 44 additions and 74 deletions
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26
embassy-nrf/src/usb.rs
View file

@ -10,7 +10,7 @@ use embassy::util::Unborrow;
use embassy::waitqueue::AtomicWaker;
use embassy_hal_common::unborrow;
use embassy_usb::control::Request;
use embassy_usb::driver::{self, Event, ReadError, WriteError};
use embassy_usb::driver::{self, EndpointError, Event};
use embassy_usb::types::{EndpointAddress, EndpointInfo, EndpointType, UsbDirection};
use futures::future::poll_fn;
use futures::Future;
@ -472,13 +472,13 @@ impl<'d, T: Instance, Dir> Endpoint<'d, T, Dir> {
}
}
unsafe fn read_dma<T: Instance>(i: usize, buf: &mut [u8]) -> Result<usize, ReadError> {
unsafe fn read_dma<T: Instance>(i: usize, buf: &mut [u8]) -> Result<usize, EndpointError> {
let regs = T::regs();
// Check that the packet fits into the buffer
let size = regs.size.epout[i].read().bits() as usize;
if size > buf.len() {
return Err(ReadError::BufferOverflow);
return Err(EndpointError::BufferOverflow);
}
if i == 0 {
@ -554,7 +554,7 @@ unsafe fn write_dma<T: Instance>(i: usize, buf: &[u8]) {
}
impl<'d, T: Instance> driver::EndpointOut for Endpoint<'d, T, Out> {
type ReadFuture<'a> = impl Future<Output = Result<usize, ReadError>> + 'a where Self: 'a;
type ReadFuture<'a> = impl Future<Output = Result<usize, EndpointError>> + 'a where Self: 'a;
fn read<'a>(&'a mut self, buf: &'a mut [u8]) -> Self::ReadFuture<'a> {
async move {
@ -563,7 +563,7 @@ impl<'d, T: Instance> driver::EndpointOut for Endpoint<'d, T, Out> {
self.wait_data_ready()
.await
.map_err(|_| ReadError::Disabled)?;
.map_err(|_| EndpointError::Disabled)?;
unsafe { read_dma::<T>(i, buf) }
}
@ -571,7 +571,7 @@ impl<'d, T: Instance> driver::EndpointOut for Endpoint<'d, T, Out> {
}
impl<'d, T: Instance> driver::EndpointIn for Endpoint<'d, T, In> {
type WriteFuture<'a> = impl Future<Output = Result<(), WriteError>> + 'a where Self: 'a;
type WriteFuture<'a> = impl Future<Output = Result<(), EndpointError>> + 'a where Self: 'a;
fn write<'a>(&'a mut self, buf: &'a [u8]) -> Self::WriteFuture<'a> {
async move {
@ -580,7 +580,7 @@ impl<'d, T: Instance> driver::EndpointIn for Endpoint<'d, T, In> {
self.wait_data_ready()
.await
.map_err(|_| WriteError::Disabled)?;
.map_err(|_| EndpointError::Disabled)?;
unsafe { write_dma::<T>(i, buf) }
@ -596,8 +596,8 @@ pub struct ControlPipe<'d, T: Instance> {
impl<'d, T: Instance> driver::ControlPipe for ControlPipe<'d, T> {
type SetupFuture<'a> = impl Future<Output = Request> + 'a where Self: 'a;
type DataOutFuture<'a> = impl Future<Output = Result<usize, ReadError>> + 'a where Self: 'a;
type DataInFuture<'a> = impl Future<Output = Result<(), WriteError>> + 'a where Self: 'a;
type DataOutFuture<'a> = impl Future<Output = Result<usize, EndpointError>> + 'a where Self: 'a;
type DataInFuture<'a> = impl Future<Output = Result<(), EndpointError>> + 'a where Self: 'a;
fn max_packet_size(&self) -> usize {
usize::from(self.max_packet_size)
@ -666,10 +666,10 @@ impl<'d, T: Instance> driver::ControlPipe for ControlPipe<'d, T> {
Poll::Ready(Ok(()))
} else if regs.events_usbreset.read().bits() != 0 {
trace!("aborted control data_out: usb reset");
Poll::Ready(Err(ReadError::Disabled))
Poll::Ready(Err(EndpointError::Disabled))
} else if regs.events_ep0setup.read().bits() != 0 {
trace!("aborted control data_out: received another SETUP");
Poll::Ready(Err(ReadError::Disabled))
Poll::Ready(Err(EndpointError::Disabled))
} else {
Poll::Pending
}
@ -705,10 +705,10 @@ impl<'d, T: Instance> driver::ControlPipe for ControlPipe<'d, T> {
Poll::Ready(Ok(()))
} else if regs.events_usbreset.read().bits() != 0 {
trace!("aborted control data_in: usb reset");
Poll::Ready(Err(WriteError::Disabled))
Poll::Ready(Err(EndpointError::Disabled))
} else if regs.events_ep0setup.read().bits() != 0 {
trace!("aborted control data_in: received another SETUP");
Poll::Ready(Err(WriteError::Disabled))
Poll::Ready(Err(EndpointError::Disabled))
} else {
Poll::Pending
}

14
embassy-usb-hid/src/lib.rs
View file

@ -15,7 +15,7 @@ use embassy::time::Duration;
use embassy_usb::driver::EndpointOut;
use embassy_usb::{
control::{ControlHandler, InResponse, OutResponse, Request, RequestType},
driver::{Driver, Endpoint, EndpointIn, WriteError},
driver::{Driver, Endpoint, EndpointError, EndpointIn},
UsbDeviceBuilder,
};
@ -187,9 +187,9 @@ pub enum ReadError {
Sync(Range<usize>),
}
impl From<embassy_usb::driver::ReadError> for ReadError {
fn from(val: embassy_usb::driver::ReadError) -> Self {
use embassy_usb::driver::ReadError::*;
impl From<embassy_usb::driver::EndpointError> for ReadError {
fn from(val: embassy_usb::driver::EndpointError) -> Self {
use embassy_usb::driver::EndpointError::*;
match val {
BufferOverflow => ReadError::BufferOverflow,
Disabled => ReadError::Disabled,
@ -207,11 +207,11 @@ impl<'d, D: Driver<'d>, const N: usize> ReportWriter<'d, D, N> {
///
/// Panics if no endpoint is available.
#[cfg(feature = "usbd-hid")]
pub async fn serialize<IR: AsInputReport>(&mut self, r: &IR) -> Result<(), WriteError> {
pub async fn serialize<IR: AsInputReport>(&mut self, r: &IR) -> Result<(), EndpointError> {
let mut buf: [u8; N] = [0; N];
let size = match serialize(&mut buf, r) {
Ok(size) => size,
Err(_) => return Err(WriteError::BufferOverflow),
Err(_) => return Err(EndpointError::BufferOverflow),
};
self.write(&buf[0..size]).await
}
@ -219,7 +219,7 @@ impl<'d, D: Driver<'d>, const N: usize> ReportWriter<'d, D, N> {
/// Writes `report` to its interrupt endpoint.
///
/// Panics if no endpoint is available.
pub async fn write(&mut self, report: &[u8]) -> Result<(), WriteError> {
pub async fn write(&mut self, report: &[u8]) -> Result<(), EndpointError> {
assert!(report.len() <= N);
let max_packet_size = usize::from(self.ep_in.info().max_packet_size);

6
embassy-usb-serial/src/lib.rs
View file

@ -10,7 +10,7 @@ use core::mem::{self, MaybeUninit};
use core::sync::atomic::{AtomicBool, Ordering};
use embassy::blocking_mutex::CriticalSectionMutex;
use embassy_usb::control::{self, ControlHandler, InResponse, OutResponse, Request};
use embassy_usb::driver::{Endpoint, EndpointIn, EndpointOut, ReadError, WriteError};
use embassy_usb::driver::{Endpoint, EndpointError, EndpointIn, EndpointOut};
use embassy_usb::{driver::Driver, types::*, UsbDeviceBuilder};
/// This should be used as `device_class` when building the `UsbDevice`.
@ -265,12 +265,12 @@ impl<'d, D: Driver<'d>> CdcAcmClass<'d, D> {
}
/// Writes a single packet into the IN endpoint.
pub async fn write_packet(&mut self, data: &[u8]) -> Result<(), WriteError> {
pub async fn write_packet(&mut self, data: &[u8]) -> Result<(), EndpointError> {
self.write_ep.write(data).await
}
/// Reads a single packet from the OUT endpoint.
pub async fn read_packet(&mut self, data: &mut [u8]) -> Result<usize, ReadError> {
pub async fn read_packet(&mut self, data: &mut [u8]) -> Result<usize, EndpointError> {
self.read_ep.read(data).await
}

4
embassy-usb/src/control.rs
View file

@ -1,7 +1,7 @@
use core::mem;
use crate::descriptor::DescriptorWriter;
use crate::driver::{self, ReadError};
use crate::driver::{self, EndpointError};
use crate::DEFAULT_ALTERNATE_SETTING;
use super::types::*;
@ -253,7 +253,7 @@ impl<C: driver::ControlPipe> ControlPipe<C> {
&mut self,
buf: &'a mut [u8],
stage: DataOutStage,
) -> Result<(&'a [u8], StatusStage), ReadError> {
) -> Result<(&'a [u8], StatusStage), EndpointError> {
if stage.length == 0 {
Ok((&[], StatusStage {}))
} else {

30
embassy-usb/src/driver.rs
View file

@ -130,7 +130,7 @@ pub trait Endpoint {
}
pub trait EndpointOut: Endpoint {
type ReadFuture<'a>: Future<Output = Result<usize, ReadError>> + 'a
type ReadFuture<'a>: Future<Output = Result<usize, EndpointError>> + 'a
where
Self: 'a;
@ -145,10 +145,10 @@ pub trait ControlPipe {
type SetupFuture<'a>: Future<Output = Request> + 'a
where
Self: 'a;
type DataOutFuture<'a>: Future<Output = Result<usize, ReadError>> + 'a
type DataOutFuture<'a>: Future<Output = Result<usize, EndpointError>> + 'a
where
Self: 'a;
type DataInFuture<'a>: Future<Output = Result<(), WriteError>> + 'a
type DataInFuture<'a>: Future<Output = Result<(), EndpointError>> + 'a
where
Self: 'a;
@ -181,7 +181,7 @@ pub trait ControlPipe {
}
pub trait EndpointIn: Endpoint {
type WriteFuture<'a>: Future<Output = Result<(), WriteError>> + 'a
type WriteFuture<'a>: Future<Output = Result<(), EndpointError>> + 'a
where
Self: 'a;
@ -216,24 +216,12 @@ pub struct Unsupported;
#[derive(Copy, Clone, Eq, PartialEq, Debug)]
#[cfg_attr(feature = "defmt", derive(defmt::Format))]
/// Errors returned by [`EndpointIn::write`]
pub enum WriteError {
/// The packet is too long to fit in the
/// transmission buffer. This is generally an error in the class implementation, because the
/// class shouldn't provide more data than the `max_packet_size` it specified when allocating
/// the endpoint.
/// Errors returned by [`EndpointIn::write`] and [`EndpointOut::read`]
pub enum EndpointError {
/// Either the packet to be written is too long to fit in the transmission
/// buffer or the received packet is too long to fit in `buf`.
BufferOverflow,
Disabled,
}
#[derive(Copy, Clone, Eq, PartialEq, Debug)]
#[cfg_attr(feature = "defmt", derive(defmt::Format))]
/// Errors returned by [`EndpointOut::read`]
pub enum ReadError {
/// The received packet is too long to
/// fit in `buf`. This is generally an error in the class implementation, because the class
/// should use a buffer that is large enough for the `max_packet_size` it specified when
/// allocating the endpoint.
BufferOverflow,
/// The endpoint is disabled.
Disabled,
}

19
examples/nrf/src/bin/usb_serial.rs
View file

@ -10,7 +10,7 @@ use embassy_nrf::interrupt;
use embassy_nrf::pac;
use embassy_nrf::usb::{Driver, Instance};
use embassy_nrf::Peripherals;
use embassy_usb::driver::{ReadError, WriteError};
use embassy_usb::driver::EndpointError;
use embassy_usb::{Config, UsbDeviceBuilder};
use embassy_usb_serial::{CdcAcmClass, State};
use futures::future::join;
@ -82,20 +82,11 @@ async fn main(_spawner: Spawner, p: Peripherals) {
struct Disconnected {}
impl From<ReadError> for Disconnected {
fn from(val: ReadError) -> Self {
impl From<EndpointError> for Disconnected {
fn from(val: EndpointError) -> Self {
match val {
ReadError::BufferOverflow => panic!("Buffer overflow"),
ReadError::Disabled => Disconnected {},
}
}
}
impl From<WriteError> for Disconnected {
fn from(val: WriteError) -> Self {
match val {
WriteError::BufferOverflow => panic!("Buffer overflow"),
WriteError::Disabled => Disconnected {},
EndpointError::BufferOverflow => panic!("Buffer overflow"),
EndpointError::Disabled => Disconnected {},
}
}
}

19
examples/nrf/src/bin/usb_serial_multitask.rs
View file

@ -11,7 +11,7 @@ use embassy_nrf::pac;
use embassy_nrf::usb::Driver;
use embassy_nrf::Peripherals;
use embassy_nrf::{interrupt, peripherals};
use embassy_usb::driver::{ReadError, WriteError};
use embassy_usb::driver::EndpointError;
use embassy_usb::{Config, UsbDevice, UsbDeviceBuilder};
use embassy_usb_serial::{CdcAcmClass, State};
@ -93,20 +93,11 @@ async fn main(spawner: Spawner, p: Peripherals) {
struct Disconnected {}
impl From<ReadError> for Disconnected {
fn from(val: ReadError) -> Self {
impl From<EndpointError> for Disconnected {
fn from(val: EndpointError) -> Self {
match val {
ReadError::BufferOverflow => panic!("Buffer overflow"),
ReadError::Disabled => Disconnected {},
}
}
}
impl From<WriteError> for Disconnected {
fn from(val: WriteError) -> Self {
match val {
WriteError::BufferOverflow => panic!("Buffer overflow"),
WriteError::Disabled => Disconnected {},
EndpointError::BufferOverflow => panic!("Buffer overflow"),
EndpointError::Disabled => Disconnected {},
}
}
}