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Remove Forever, switch to static_cell.

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This commit is contained in:
Dario Nieuwenhuis 2022-08-22 15:51:44 +02:00
parent 1b95990258
commit 478f472784
45 changed files with 139 additions and 220 deletions
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2
embassy-cortex-m/src/executor.rs
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@ -71,7 +71,7 @@ impl<I: Interrupt> InterruptExecutor<I> {
/// Executor instance in a place where it'll live forever and grants you mutable
/// access. There's a few ways to do this:
///
/// - a [Forever](embassy_util::Forever) (safe)
/// - a [StaticCell](https://docs.rs/static_cell/latest/static_cell/) (safe)
/// - a `static mut` (unsafe)
/// - a local variable in a function you know never returns (like `fn main() -> !`), upgrading its lifetime with `transmute`. (unsafe)
pub fn start(&'static mut self) -> SendSpawner {

4
embassy-embedded-hal/src/shared_bus/asynch/i2c.rs
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@ -7,12 +7,12 @@
//! use embassy_util::mutex::Mutex;
//! use embassy_util::blocking_mutex::raw::ThreadModeRawMutex;
//!
//! static I2C_BUS: Forever<Mutex::<ThreadModeRawMutex, Twim<TWISPI0>>> = Forever::new();
//! static I2C_BUS: StaticCell<Mutex::<ThreadModeRawMutex, Twim<TWISPI0>>> = StaticCell::new();
//! let config = twim::Config::default();
//! let irq = interrupt::take!(SPIM0_SPIS0_TWIM0_TWIS0_SPI0_TWI0);
//! let i2c = Twim::new(p.TWISPI0, irq, p.P0_03, p.P0_04, config);
//! let i2c_bus = Mutex::<ThreadModeRawMutex, _>::new(i2c);
//! let i2c_bus = I2C_BUS.put(i2c_bus);
//! let i2c_bus = I2C_BUS.init(i2c_bus);
//!
//! // Device 1, using embedded-hal-async compatible driver for QMC5883L compass
//! let i2c_dev1 = I2cDevice::new(i2c_bus);

4
embassy-embedded-hal/src/shared_bus/asynch/spi.rs
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@ -7,13 +7,13 @@
//! use embassy_util::mutex::Mutex;
//! use embassy_util::blocking_mutex::raw::ThreadModeRawMutex;
//!
//! static SPI_BUS: Forever<Mutex<ThreadModeRawMutex, spim::Spim<SPI3>>> = Forever::new();
//! static SPI_BUS: StaticCell<Mutex<ThreadModeRawMutex, spim::Spim<SPI3>>> = StaticCell::new();
//! let mut config = spim::Config::default();
//! config.frequency = spim::Frequency::M32;
//! let irq = interrupt::take!(SPIM3);
//! let spi = spim::Spim::new_txonly(p.SPI3, irq, p.P0_15, p.P0_18, config);
//! let spi_bus = Mutex::<ThreadModeRawMutex, _>::new(spi);
//! let spi_bus = SPI_BUS.put(spi_bus);
//! let spi_bus = SPI_BUS.init(spi_bus);
//!
//! // Device 1, using embedded-hal-async compatible driver for ST7735 LCD display
//! let cs_pin1 = Output::new(p.P0_24, Level::Low, OutputDrive::Standard);

4
embassy-embedded-hal/src/shared_bus/blocking/i2c.rs
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@ -6,11 +6,11 @@
//! use embassy_embedded_hal::shared_bus::blocking::i2c::I2cDevice;
//! use embassy_util::blocking_mutex::{NoopMutex, raw::NoopRawMutex};
//!
//! static I2C_BUS: Forever<NoopMutex<RefCell<Twim<TWISPI0>>>> = Forever::new();
//! static I2C_BUS: StaticCell<NoopMutex<RefCell<Twim<TWISPI0>>>> = StaticCell::new();
//! let irq = interrupt::take!(SPIM0_SPIS0_TWIM0_TWIS0_SPI0_TWI0);
//! let i2c = Twim::new(p.TWISPI0, irq, p.P0_03, p.P0_04, Config::default());
//! let i2c_bus = NoopMutex::new(RefCell::new(i2c));
//! let i2c_bus = I2C_BUS.put(i2c_bus);
//! let i2c_bus = I2C_BUS.init(i2c_bus);
//!
//! let i2c_dev1 = I2cDevice::new(i2c_bus);
//! let mpu = Mpu6050::new(i2c_dev1);

4
embassy-embedded-hal/src/shared_bus/blocking/spi.rs
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@ -6,11 +6,11 @@
//! use embassy_embedded_hal::shared_bus::blocking::spi::SpiDevice;
//! use embassy_util::blocking_mutex::{NoopMutex, raw::NoopRawMutex};
//!
//! static SPI_BUS: Forever<NoopMutex<RefCell<Spim<SPI3>>>> = Forever::new();
//! static SPI_BUS: StaticCell<NoopMutex<RefCell<Spim<SPI3>>>> = StaticCell::new();
//! let irq = interrupt::take!(SPIM3);
//! let spi = Spim::new_txonly(p.SPI3, irq, p.P0_15, p.P0_18, Config::default());
//! let spi_bus = NoopMutex::new(RefCell::new(spi));
//! let spi_bus = SPI_BUS.put(spi_bus);
//! let spi_bus = SPI_BUS.init(spi_bus);
//!
//! // Device 1, using embedded-hal compatible driver for ST7735 LCD display
//! let cs_pin1 = Output::new(p.P0_24, Level::Low, OutputDrive::Standard);

1
embassy-executor/Cargo.toml
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@ -44,6 +44,7 @@ embassy-time = { version = "0.1.0", path = "../embassy-time", optional = true}
atomic-polyfill = "1.0.1"
critical-section = "1.1"
cfg-if = "1.0.0"
static_cell = "1.0"
# WASM dependencies
wasm-bindgen = { version = "0.2.76", features = ["nightly"], optional = true }

2
embassy-executor/src/arch/cortex_m.rs
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@ -41,7 +41,7 @@ impl Executor {
/// Executor instance in a place where it'll live forever and grants you mutable
/// access. There's a few ways to do this:
///
/// - a [Forever](crate::util::Forever) (safe)
/// - a [StaticCell](https://docs.rs/static_cell/latest/static_cell/) (safe)
/// - a `static mut` (unsafe)
/// - a local variable in a function you know never returns (like `fn main() -> !`), upgrading its lifetime with `transmute`. (unsafe)
///

2
embassy-executor/src/arch/riscv32.rs
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@ -43,7 +43,7 @@ impl Executor {
/// Executor instance in a place where it'll live forever and grants you mutable
/// access. There's a few ways to do this:
///
/// - a [Forever](crate::util::Forever) (safe)
/// - a [StaticCell](https://docs.rs/static_cell/latest/static_cell/) (safe)
/// - a `static mut` (unsafe)
/// - a local variable in a function you know never returns (like `fn main() -> !`), upgrading its lifetime with `transmute`. (unsafe)
///

2
embassy-executor/src/arch/std.rs
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@ -40,7 +40,7 @@ impl Executor {
/// Executor instance in a place where it'll live forever and grants you mutable
/// access. There's a few ways to do this:
///
/// - a [Forever](crate::util::Forever) (safe)
/// - a [StaticCell](https://docs.rs/static_cell/latest/static_cell/) (safe)
/// - a `static mut` (unsafe)
/// - a local variable in a function you know never returns (like `fn main() -> !`), upgrading its lifetime with `transmute`. (unsafe)
///

2
embassy-executor/src/arch/wasm.rs
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@ -59,7 +59,7 @@ impl Executor {
/// Executor instance in a place where it'll live forever and grants you mutable
/// access. There's a few ways to do this:
///
/// - a [Forever](crate::util::Forever) (safe)
/// - a [StaticCell](https://docs.rs/static_cell/latest/static_cell/) (safe)
/// - a `static mut` (unsafe)
/// - a local variable in a function you know never returns (like `fn main() -> !`), upgrading its lifetime with `transmute`. (unsafe)
pub fn start(&'static mut self, init: impl FnOnce(Spawner)) {

2
embassy-executor/src/arch/xtensa.rs
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@ -43,7 +43,7 @@ impl Executor {
/// Executor instance in a place where it'll live forever and grants you mutable
/// access. There's a few ways to do this:
///
/// - a [Forever](crate::util::Forever) (safe)
/// - a [StaticCell](https://docs.rs/static_cell/latest/static_cell/) (safe)
/// - a `static mut` (unsafe)
/// - a local variable in a function you know never returns (like `fn main() -> !`), upgrading its lifetime with `transmute`. (unsafe)
///

6
embassy-executor/src/lib.rs
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@ -67,3 +67,9 @@ pub mod raw;
mod spawner;
pub use spawner::*;
/// Do not use. Used for macros and HALs only. Not covered by semver guarantees.
#[doc(hidden)]
pub mod _export {
pub use static_cell::StaticCell;
}

4
embassy-macros/src/macros/main.rs
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@ -34,8 +34,8 @@ pub fn run(args: syn::AttributeArgs, f: syn::ItemFn) -> Result<TokenStream, Toke
let main = quote! {
#[wasm_bindgen::prelude::wasm_bindgen(start)]
pub fn main() -> Result<(), wasm_bindgen::JsValue> {
static EXECUTOR: ::embassy_util::Forever<::embassy_executor::Executor> = ::embassy_util::Forever::new();
let executor = EXECUTOR.put(::embassy_executor::Executor::new());
static EXECUTOR: ::embassy_executor::_export::StaticCell<::embassy_executor::Executor> = ::embassy_executor::_export::StaticCell::new();
let executor = EXECUTOR.init(::embassy_executor::Executor::new());
executor.start(|spawner| {
spawner.spawn(__embassy_main(spawner)).unwrap();

1
embassy-util/Cargo.toml
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@ -31,3 +31,4 @@ futures-util = { version = "0.3.17", features = [ "channel" ] }
# Enable critical-section implementation for std, for tests
critical-section = { version = "1.1", features = ["std"] }
static_cell = "1.0"

10
embassy-util/src/channel/mpmc.rs
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@ -471,10 +471,10 @@ mod tests {
use futures_executor::ThreadPool;
use futures_timer::Delay;
use futures_util::task::SpawnExt;
use static_cell::StaticCell;
use super::*;
use crate::blocking_mutex::raw::{CriticalSectionRawMutex, NoopRawMutex};
use crate::Forever;
fn capacity<T, const N: usize>(c: &ChannelState<T, N>) -> usize {
c.queue.capacity() - c.queue.len()
@ -549,8 +549,8 @@ mod tests {
async fn receiver_receives_given_try_send_async() {
let executor = ThreadPool::new().unwrap();
static CHANNEL: Forever<Channel<CriticalSectionRawMutex, u32, 3>> = Forever::new();
let c = &*CHANNEL.put(Channel::new());
static CHANNEL: StaticCell<Channel<CriticalSectionRawMutex, u32, 3>> = StaticCell::new();
let c = &*CHANNEL.init(Channel::new());
let c2 = c;
assert!(executor
.spawn(async move {
@ -571,8 +571,8 @@ mod tests {
async fn senders_sends_wait_until_capacity() {
let executor = ThreadPool::new().unwrap();
static CHANNEL: Forever<Channel<CriticalSectionRawMutex, u32, 1>> = Forever::new();
let c = &*CHANNEL.put(Channel::new());
static CHANNEL: StaticCell<Channel<CriticalSectionRawMutex, u32, 1>> = StaticCell::new();
let c = &*CHANNEL.init(Channel::new());
assert!(c.try_send(1).is_ok());
let c2 = c;

95
embassy-util/src/forever.rs
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@ -1,95 +0,0 @@
use core::cell::UnsafeCell;
use core::mem::MaybeUninit;
use atomic_polyfill::{AtomicBool, Ordering};
/// Type with static lifetime that may be written to once at runtime.
///
/// This may be used to initialize static objects at runtime, typically in the init routine.
/// This is useful for objects such as Embassy's RTC, which cannot be initialized in a const
/// context.
///
/// Note: IF a global mutable variable is desired, use a CriticalSectionMutex or ThreadModeMutex instead.
///
/// ```
/// use embassy_util::Forever;
/// // Using an integer for the sake of keeping this example self-contained,
/// // see https://github.com/embassy-rs/embassy/wiki/Getting-Started for a more "proper" example.
/// static SOME_INT: Forever<u32> =Forever::new();
///
/// // put returns a mutable pointer to the object stored in the forever, which may then be passed
/// // around.
/// let mut x = SOME_INT.put(42);
/// assert_eq!(*x, 42);
/// ```
pub struct Forever<T> {
used: AtomicBool,
t: UnsafeCell<MaybeUninit<T>>,
}
unsafe impl<T> Send for Forever<T> {}
unsafe impl<T> Sync for Forever<T> {}
impl<T> Forever<T> {
/// Create a new `Forever`.
#[inline(always)]
pub const fn new() -> Self {
Self {
used: AtomicBool::new(false),
t: UnsafeCell::new(MaybeUninit::uninit()),
}
}
/// Store a value in this `Forever`, returning a mutable reference to it.
///
/// Using this method, the compiler usually constructs `val` in the stack and then moves
/// it into the `Forever`. If `T` is big, this is likely to cause stack overflows.
/// Considering using [`Signal::put_with`] instead, which will construct it in-place inside the `Forever`.
///
/// # Panics
///
/// Panics if this `Forever` already has a value stored in it.
#[inline(always)]
#[allow(clippy::mut_from_ref)]
pub fn put(&'static self, val: T) -> &'static mut T {
self.put_with(|| val)
}
/// Store the closure return value in this `Forever`, returning a mutable reference to it.
///
/// The advantage over [`Forever::put`] is that this method allows the closure to construct
/// the `T` value in-place directly inside the `Forever`, saving stack space.
///
/// # Panics
///
/// Panics if this `Forever` already has a value stored in it.
#[inline(always)]
#[allow(clippy::mut_from_ref)]
pub fn put_with(&'static self, val: impl FnOnce() -> T) -> &'static mut T {
if self
.used
.compare_exchange(false, true, Ordering::Relaxed, Ordering::Relaxed)
.is_err()
{
panic!("Forever.put() called multiple times");
}
let p: &'static mut MaybeUninit<T> = unsafe { &mut *self.t.get() };
p.write(val())
}
/// Unsafely get a mutable reference to the contents of this Forever.
///
/// # Safety
///
/// This is undefined behavior if:
///
/// - The `Forever` has not been initialized yet (with `put' or `put_with`), or
/// - A reference to the contents (mutable or not) already exists.
#[inline(always)]
#[allow(clippy::mut_from_ref)]
pub unsafe fn steal(&self) -> &mut T {
let p: &mut MaybeUninit<T> = &mut *self.t.get();
p.assume_init_mut()
}
}

2
embassy-util/src/lib.rs
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@ -16,10 +16,8 @@ pub mod mutex;
pub mod pipe;
pub mod waitqueue;
mod forever;
mod select;
mod yield_now;
pub use forever::*;
pub use select::*;
pub use yield_now::*;

6
embassy-util/src/pipe.rs
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@ -461,10 +461,10 @@ mod io_impls {
mod tests {
use futures_executor::ThreadPool;
use futures_util::task::SpawnExt;
use static_cell::StaticCell;
use super::*;
use crate::blocking_mutex::raw::{CriticalSectionRawMutex, NoopRawMutex};
use crate::Forever;
fn capacity<const N: usize>(c: &PipeState<N>) -> usize {
N - c.buffer.len()
@ -528,8 +528,8 @@ mod tests {
async fn receiver_receives_given_try_write_async() {
let executor = ThreadPool::new().unwrap();
static CHANNEL: Forever<Pipe<CriticalSectionRawMutex, 3>> = Forever::new();
let c = &*CHANNEL.put(Pipe::new());
static CHANNEL: StaticCell<Pipe<CriticalSectionRawMutex, 3>> = StaticCell::new();
let c = &*CHANNEL.init(Pipe::new());
let c2 = c;
let f = async move {
assert_eq!(c2.try_write(&[42]), Ok(1));

1
examples/nrf/Cargo.toml
View File

@ -22,6 +22,7 @@ embedded-io = "0.3.0"
defmt = "0.3"
defmt-rtt = "0.3"
static_cell = "1.0"
cortex-m = { version = "0.7.6", features = ["critical-section-single-core"] }
cortex-m-rt = "0.7.0"
panic-probe = { version = "0.3", features = ["print-defmt"] }

6
examples/nrf/src/bin/channel_sender_receiver.rs
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@ -8,7 +8,7 @@ use embassy_nrf::gpio::{AnyPin, Level, Output, OutputDrive, Pin};
use embassy_time::{Duration, Timer};
use embassy_util::blocking_mutex::raw::NoopRawMutex;
use embassy_util::channel::mpmc::{Channel, Receiver, Sender};
use embassy_util::Forever;
use static_cell::StaticCell;
use {defmt_rtt as _, panic_probe as _};
enum LedState {
@ -16,7 +16,7 @@ enum LedState {
Off,
}
static CHANNEL: Forever<Channel<NoopRawMutex, LedState, 1>> = Forever::new();
static CHANNEL: StaticCell<Channel<NoopRawMutex, LedState, 1>> = StaticCell::new();
#[embassy_executor::task]
async fn send_task(sender: Sender<'static, NoopRawMutex, LedState, 1>) {
@ -43,7 +43,7 @@ async fn recv_task(led: AnyPin, receiver: Receiver<'static, NoopRawMutex, LedSta
#[embassy_executor::main]
async fn main(spawner: Spawner) {
let p = embassy_nrf::init(Default::default());
let channel = CHANNEL.put(Channel::new());
let channel = CHANNEL.init(Channel::new());
unwrap!(spawner.spawn(send_task(channel.sender())));
unwrap!(spawner.spawn(recv_task(p.P0_13.degrade(), channel.receiver())));

14
examples/nrf/src/bin/multiprio.rs
View File

@ -63,7 +63,7 @@ use embassy_nrf::executor::{Executor, InterruptExecutor};
use embassy_nrf::interrupt;
use embassy_nrf::interrupt::InterruptExt;
use embassy_time::{Duration, Instant, Timer};
use embassy_util::Forever;
use static_cell::StaticCell;
use {defmt_rtt as _, panic_probe as _};
#[embassy_executor::task]
@ -108,9 +108,9 @@ async fn run_low() {
}
}
static EXECUTOR_HIGH: Forever<InterruptExecutor<interrupt::SWI1_EGU1>> = Forever::new();
static EXECUTOR_MED: Forever<InterruptExecutor<interrupt::SWI0_EGU0>> = Forever::new();
static EXECUTOR_LOW: Forever<Executor> = Forever::new();
static EXECUTOR_HIGH: StaticCell<InterruptExecutor<interrupt::SWI1_EGU1>> = StaticCell::new();
static EXECUTOR_MED: StaticCell<InterruptExecutor<interrupt::SWI0_EGU0>> = StaticCell::new();
static EXECUTOR_LOW: StaticCell<Executor> = StaticCell::new();
#[entry]
fn main() -> ! {
@ -121,19 +121,19 @@ fn main() -> ! {
// High-priority executor: SWI1_EGU1, priority level 6
let irq = interrupt::take!(SWI1_EGU1);
irq.set_priority(interrupt::Priority::P6);
let executor = EXECUTOR_HIGH.put(InterruptExecutor::new(irq));
let executor = EXECUTOR_HIGH.init(InterruptExecutor::new(irq));
let spawner = executor.start();
unwrap!(spawner.spawn(run_high()));
// Medium-priority executor: SWI0_EGU0, priority level 7
let irq = interrupt::take!(SWI0_EGU0);
irq.set_priority(interrupt::Priority::P7);
let executor = EXECUTOR_MED.put(InterruptExecutor::new(irq));
let executor = EXECUTOR_MED.init(InterruptExecutor::new(irq));
let spawner = executor.start();
unwrap!(spawner.spawn(run_med()));
// Low priority executor: runs in thread mode, using WFE/SEV
let executor = EXECUTOR_LOW.put(Executor::new());
let executor = EXECUTOR_LOW.init(Executor::new());
executor.run(|spawner| {
unwrap!(spawner.spawn(run_low()));
});

6
examples/nrf/src/bin/raw_spawn.rs
View File

@ -8,7 +8,7 @@ use defmt::{info, unwrap};
use embassy_executor::raw::TaskStorage;
use embassy_executor::Executor;
use embassy_time::{Duration, Timer};
use embassy_util::Forever;
use static_cell::StaticCell;
use {defmt_rtt as _, panic_probe as _};
async fn run1() {
@ -25,14 +25,14 @@ async fn run2() {
}
}
static EXECUTOR: Forever<Executor> = Forever::new();
static EXECUTOR: StaticCell<Executor> = StaticCell::new();
#[entry]
fn main() -> ! {
info!("Hello World!");
let _p = embassy_nrf::init(Default::default());
let executor = EXECUTOR.put(Executor::new());
let executor = EXECUTOR.init(Executor::new());
let run1_task = TaskStorage::new();
let run2_task = TaskStorage::new();

14
examples/nrf/src/bin/usb_ethernet.rs
View File

@ -18,17 +18,17 @@ use embassy_usb::{Builder, Config, UsbDevice};
use embassy_usb_ncm::{CdcNcmClass, Receiver, Sender, State};
use embassy_util::blocking_mutex::raw::ThreadModeRawMutex;
use embassy_util::channel::mpmc::Channel;
use embassy_util::Forever;
use embedded_io::asynch::{Read, Write};
use static_cell::StaticCell;
use {defmt_rtt as _, panic_probe as _};
type MyDriver = Driver<'static, peripherals::USBD, PowerUsb>;
macro_rules! forever {
macro_rules! singleton {
($val:expr) => {{
type T = impl Sized;
static FOREVER: Forever<T> = Forever::new();
FOREVER.put_with(move || $val)
static STATIC_CELL: StaticCell<T> = StaticCell::new();
STATIC_CELL.init_with(move || $val)
}};
}
@ -116,7 +116,7 @@ async fn main(spawner: Spawner) {
control_buf: [u8; 128],
serial_state: State<'static>,
}
let res: &mut Resources = forever!(Resources {
let res: &mut Resources = singleton!(Resources {
device_descriptor: [0; 256],
config_descriptor: [0; 256],
bos_descriptor: [0; 256],
@ -174,10 +174,10 @@ async fn main(spawner: Spawner) {
// Init network stack
let device = Device { mac_addr: our_mac_addr };
let stack = &*forever!(Stack::new(
let stack = &*singleton!(Stack::new(
device,
config,
forever!(StackResources::<1, 2, 8>::new()),
singleton!(StackResources::<1, 2, 8>::new()),
seed
));

6
examples/nrf/src/bin/usb_serial_multitask.rs
View File

@ -12,7 +12,7 @@ use embassy_nrf::{interrupt, pac, peripherals};
use embassy_usb::driver::EndpointError;
use embassy_usb::{Builder, Config, UsbDevice};
use embassy_usb_serial::{CdcAcmClass, State};
use embassy_util::Forever;
use static_cell::StaticCell;
use {defmt_rtt as _, panic_probe as _};
type MyDriver = Driver<'static, peripherals::USBD, PowerUsb>;
@ -67,8 +67,8 @@ async fn main(spawner: Spawner) {
control_buf: [u8; 64],
serial_state: State<'static>,
}
static RESOURCES: Forever<Resources> = Forever::new();
let res = RESOURCES.put(Resources {
static RESOURCES: StaticCell<Resources> = StaticCell::new();
let res = RESOURCES.init(Resources {
device_descriptor: [0; 256],
config_descriptor: [0; 256],
bos_descriptor: [0; 256],

1
examples/std/Cargo.toml
View File

@ -20,3 +20,4 @@ libc = "0.2.101"
clap = { version = "3.0.0-beta.5", features = ["derive"] }
rand_core = { version = "0.6.3", features = ["std"] }
heapless = { version = "0.7.5", default-features = false }
static_cell = "1.0"

16
examples/std/src/bin/net.rs
View File

@ -4,22 +4,22 @@ use clap::Parser;
use embassy_executor::{Executor, Spawner};
use embassy_net::tcp::TcpSocket;
use embassy_net::{ConfigStrategy, Ipv4Address, Ipv4Cidr, Stack, StackResources};
use embassy_util::Forever;
use embedded_io::asynch::Write;
use heapless::Vec;
use log::*;
use rand_core::{OsRng, RngCore};
use static_cell::StaticCell;
#[path = "../tuntap.rs"]
mod tuntap;
use crate::tuntap::TunTapDevice;
macro_rules! forever {
macro_rules! singleton {
($val:expr) => {{
type T = impl Sized;
static FOREVER: Forever<T> = Forever::new();
FOREVER.put_with(move || $val)
static STATIC_CELL: StaticCell<T> = StaticCell::new();
STATIC_CELL.init_with(move || $val)
}};
}
@ -63,10 +63,10 @@ async fn main_task(spawner: Spawner) {
let seed = u64::from_le_bytes(seed);
// Init network stack
let stack = &*forever!(Stack::new(
let stack = &*singleton!(Stack::new(
device,
config,
forever!(StackResources::<1, 2, 8>::new()),
singleton!(StackResources::<1, 2, 8>::new()),
seed
));
@ -97,7 +97,7 @@ async fn main_task(spawner: Spawner) {
}
}
static EXECUTOR: Forever<Executor> = Forever::new();
static EXECUTOR: StaticCell<Executor> = StaticCell::new();
fn main() {
env_logger::builder()
@ -106,7 +106,7 @@ fn main() {
.format_timestamp_nanos()
.init();
let executor = EXECUTOR.put(Executor::new());
let executor = EXECUTOR.init(Executor::new());
executor.run(|spawner| {
spawner.spawn(main_task(spawner)).unwrap();
});

16
examples/std/src/bin/net_udp.rs
View File

@ -4,21 +4,21 @@ use clap::Parser;
use embassy_executor::{Executor, Spawner};
use embassy_net::udp::UdpSocket;
use embassy_net::{ConfigStrategy, Ipv4Address, Ipv4Cidr, PacketMetadata, Stack, StackResources};
use embassy_util::Forever;
use heapless::Vec;
use log::*;
use rand_core::{OsRng, RngCore};
use static_cell::StaticCell;
#[path = "../tuntap.rs"]
mod tuntap;
use crate::tuntap::TunTapDevice;
macro_rules! forever {
macro_rules! singleton {
($val:expr) => {{
type T = impl Sized;
static FOREVER: Forever<T> = Forever::new();
FOREVER.put_with(move || $val)
static STATIC_CELL: StaticCell<T> = StaticCell::new();
STATIC_CELL.init_with(move || $val)
}};
}
@ -62,10 +62,10 @@ async fn main_task(spawner: Spawner) {
let seed = u64::from_le_bytes(seed);
// Init network stack
let stack = &*forever!(Stack::new(
let stack = &*singleton!(Stack::new(
device,
config,
forever!(StackResources::<1, 2, 8>::new()),
singleton!(StackResources::<1, 2, 8>::new()),
seed
));
@ -93,7 +93,7 @@ async fn main_task(spawner: Spawner) {
}
}
static EXECUTOR: Forever<Executor> = Forever::new();
static EXECUTOR: StaticCell<Executor> = StaticCell::new();
fn main() {
env_logger::builder()
@ -102,7 +102,7 @@ fn main() {
.format_timestamp_nanos()
.init();
let executor = EXECUTOR.put(Executor::new());
let executor = EXECUTOR.init(Executor::new());
executor.run(|spawner| {
spawner.spawn(main_task(spawner)).unwrap();
});

6
examples/std/src/bin/serial.rs
View File

@ -5,10 +5,10 @@ mod serial_port;
use async_io::Async;
use embassy_executor::Executor;
use embassy_util::Forever;
use embedded_io::asynch::Read;
use log::*;
use nix::sys::termios;
use static_cell::StaticCell;
use self::serial_port::SerialPort;
@ -40,7 +40,7 @@ async fn run() {
}
}
static EXECUTOR: Forever<Executor> = Forever::new();
static EXECUTOR: StaticCell<Executor> = StaticCell::new();
fn main() {
env_logger::builder()
@ -49,7 +49,7 @@ fn main() {
.format_timestamp_nanos()
.init();
let executor = EXECUTOR.put(Executor::new());
let executor = EXECUTOR.init(Executor::new());
executor.run(|spawner| {
spawner.spawn(run()).unwrap();
});

1
examples/stm32f3/Cargo.toml
View File

@ -23,3 +23,4 @@ futures = { version = "0.3.17", default-features = false, features = ["async-awa
heapless = { version = "0.7.5", default-features = false }
nb = "1.0.0"
embedded-storage = "0.3.0"
static_cell = "1.0"

14
examples/stm32f3/src/bin/multiprio.rs
View File

@ -63,7 +63,7 @@ use embassy_stm32::executor::{Executor, InterruptExecutor};
use embassy_stm32::interrupt;
use embassy_stm32::interrupt::InterruptExt;
use embassy_time::{Duration, Instant, Timer};
use embassy_util::Forever;
use static_cell::StaticCell;
use {defmt_rtt as _, panic_probe as _};
#[embassy_executor::task]
@ -108,9 +108,9 @@ async fn run_low() {
}
}
static EXECUTOR_HIGH: Forever<InterruptExecutor<interrupt::UART4>> = Forever::new();
static EXECUTOR_MED: Forever<InterruptExecutor<interrupt::UART5>> = Forever::new();
static EXECUTOR_LOW: Forever<Executor> = Forever::new();
static EXECUTOR_HIGH: StaticCell<InterruptExecutor<interrupt::UART4>> = StaticCell::new();
static EXECUTOR_MED: StaticCell<InterruptExecutor<interrupt::UART5>> = StaticCell::new();
static EXECUTOR_LOW: StaticCell<Executor> = StaticCell::new();
#[entry]
fn main() -> ! {
@ -121,19 +121,19 @@ fn main() -> ! {
// High-priority executor: SWI1_EGU1, priority level 6
let irq = interrupt::take!(UART4);
irq.set_priority(interrupt::Priority::P6);
let executor = EXECUTOR_HIGH.put(InterruptExecutor::new(irq));
let executor = EXECUTOR_HIGH.init(InterruptExecutor::new(irq));
let spawner = executor.start();
unwrap!(spawner.spawn(run_high()));
// Medium-priority executor: SWI0_EGU0, priority level 7
let irq = interrupt::take!(UART5);
irq.set_priority(interrupt::Priority::P7);
let executor = EXECUTOR_MED.put(InterruptExecutor::new(irq));
let executor = EXECUTOR_MED.init(InterruptExecutor::new(irq));
let spawner = executor.start();
unwrap!(spawner.spawn(run_med()));
// Low priority executor: runs in thread mode, using WFE/SEV
let executor = EXECUTOR_LOW.put(Executor::new());
let executor = EXECUTOR_LOW.init(Executor::new());
executor.run(|spawner| {
unwrap!(spawner.spawn(run_low()));
});

1
examples/stm32f4/Cargo.toml
View File

@ -23,6 +23,7 @@ heapless = { version = "0.7.5", default-features = false }
nb = "1.0.0"
embedded-storage = "0.3.0"
micromath = "2.0.0"
static_cell = "1.0"
usb-device = "0.2"
usbd-serial = "0.1.1"

14
examples/stm32f4/src/bin/multiprio.rs
View File

@ -63,7 +63,7 @@ use embassy_stm32::executor::{Executor, InterruptExecutor};
use embassy_stm32::interrupt;
use embassy_stm32::interrupt::InterruptExt;
use embassy_time::{Duration, Instant, Timer};
use embassy_util::Forever;
use static_cell::StaticCell;
use {defmt_rtt as _, panic_probe as _};
#[embassy_executor::task]
@ -108,9 +108,9 @@ async fn run_low() {
}
}
static EXECUTOR_HIGH: Forever<InterruptExecutor<interrupt::UART4>> = Forever::new();
static EXECUTOR_MED: Forever<InterruptExecutor<interrupt::UART5>> = Forever::new();
static EXECUTOR_LOW: Forever<Executor> = Forever::new();
static EXECUTOR_HIGH: StaticCell<InterruptExecutor<interrupt::UART4>> = StaticCell::new();
static EXECUTOR_MED: StaticCell<InterruptExecutor<interrupt::UART5>> = StaticCell::new();
static EXECUTOR_LOW: StaticCell<Executor> = StaticCell::new();
#[entry]
fn main() -> ! {
@ -121,19 +121,19 @@ fn main() -> ! {
// High-priority executor: SWI1_EGU1, priority level 6
let irq = interrupt::take!(UART4);
irq.set_priority(interrupt::Priority::P6);
let executor = EXECUTOR_HIGH.put(InterruptExecutor::new(irq));
let executor = EXECUTOR_HIGH.init(InterruptExecutor::new(irq));
let spawner = executor.start();
unwrap!(spawner.spawn(run_high()));
// Medium-priority executor: SWI0_EGU0, priority level 7
let irq = interrupt::take!(UART5);
irq.set_priority(interrupt::Priority::P7);
let executor = EXECUTOR_MED.put(InterruptExecutor::new(irq));
let executor = EXECUTOR_MED.init(InterruptExecutor::new(irq));
let spawner = executor.start();
unwrap!(spawner.spawn(run_med()));
// Low priority executor: runs in thread mode, using WFE/SEV
let executor = EXECUTOR_LOW.put(Executor::new());
let executor = EXECUTOR_LOW.init(Executor::new());
executor.run(|spawner| {
unwrap!(spawner.spawn(run_low()));
});

1
examples/stm32f7/Cargo.toml
View File

@ -24,3 +24,4 @@ nb = "1.0.0"
rand_core = "0.6.3"
critical-section = "1.1"
embedded-storage = "0.3.0"
static_cell = "1.0"

14
examples/stm32f7/src/bin/eth.rs
View File

@ -13,16 +13,16 @@ use embassy_stm32::rng::Rng;
use embassy_stm32::time::mhz;
use embassy_stm32::{interrupt, Config};
use embassy_time::{Duration, Timer};
use embassy_util::Forever;
use embedded_io::asynch::Write;
use rand_core::RngCore;
use static_cell::StaticCell;
use {defmt_rtt as _, panic_probe as _};
macro_rules! forever {
macro_rules! singleton {
($val:expr) => {{
type T = impl Sized;
static FOREVER: Forever<T> = Forever::new();
FOREVER.put_with(move || $val)
static STATIC_CELL: StaticCell<T> = StaticCell::new();
STATIC_CELL.init_with(move || $val)
}};
}
@ -52,7 +52,7 @@ async fn main(spawner: Spawner) -> ! {
let device = unsafe {
Ethernet::new(
forever!(State::new()),
singleton!(State::new()),
p.ETH,
eth_int,
p.PA1,
@ -78,10 +78,10 @@ async fn main(spawner: Spawner) -> ! {
//});
// Init network stack
let stack = &*forever!(Stack::new(
let stack = &*singleton!(Stack::new(
device,
config,
forever!(StackResources::<1, 2, 8>::new()),
singleton!(StackResources::<1, 2, 8>::new()),
seed
));

1
examples/stm32h7/Cargo.toml
View File

@ -28,6 +28,7 @@ critical-section = "1.1"
micromath = "2.0.0"
stm32-fmc = "0.2.4"
embedded-storage = "0.3.0"
static_cell = "1.0"
# cargo build/run
[profile.dev]

14
examples/stm32h7/src/bin/eth.rs
View File

@ -13,16 +13,16 @@ use embassy_stm32::rng::Rng;
use embassy_stm32::time::mhz;
use embassy_stm32::{interrupt, Config};
use embassy_time::{Duration, Timer};
use embassy_util::Forever;
use embedded_io::asynch::Write;
use rand_core::RngCore;
use static_cell::StaticCell;
use {defmt_rtt as _, panic_probe as _};
macro_rules! forever {
macro_rules! singleton {
($val:expr) => {{
type T = impl Sized;
static FOREVER: Forever<T> = Forever::new();
FOREVER.put_with(move || $val)
static STATIC_CELL: StaticCell<T> = StaticCell::new();
STATIC_CELL.init_with(move || $val)
}};
}
@ -53,7 +53,7 @@ async fn main(spawner: Spawner) -> ! {
let device = unsafe {
Ethernet::new(
forever!(State::new()),
singleton!(State::new()),
p.ETH,
eth_int,
p.PA1,
@ -79,10 +79,10 @@ async fn main(spawner: Spawner) -> ! {
//});
// Init network stack
let stack = &*forever!(Stack::new(
let stack = &*singleton!(Stack::new(
device,
config,
forever!(StackResources::<1, 2, 8>::new()),
singleton!(StackResources::<1, 2, 8>::new()),
seed
));

14
examples/stm32h7/src/bin/eth_client.rs
View File

@ -13,17 +13,17 @@ use embassy_stm32::rng::Rng;
use embassy_stm32::time::mhz;
use embassy_stm32::{interrupt, Config};
use embassy_time::{Duration, Timer};
use embassy_util::Forever;
use embedded_io::asynch::Write;
use embedded_nal_async::{Ipv4Addr, SocketAddr, SocketAddrV4, TcpConnect};
use rand_core::RngCore;
use static_cell::StaticCell;
use {defmt_rtt as _, panic_probe as _};
macro_rules! forever {
macro_rules! singleton {
($val:expr) => {{
type T = impl Sized;
static FOREVER: Forever<T> = Forever::new();
FOREVER.put_with(move || $val)
static STATIC_CELL: StaticCell<T> = StaticCell::new();
STATIC_CELL.init_with(move || $val)
}};
}
@ -54,7 +54,7 @@ async fn main(spawner: Spawner) -> ! {
let device = unsafe {
Ethernet::new(
forever!(State::new()),
singleton!(State::new()),
p.ETH,
eth_int,
p.PA1,
@ -80,10 +80,10 @@ async fn main(spawner: Spawner) -> ! {
//});
// Init network stack
let stack = &*forever!(Stack::new(
let stack = &*singleton!(Stack::new(
device,
config,
forever!(StackResources::<1, 2, 8>::new()),
singleton!(StackResources::<1, 2, 8>::new()),
seed
));

6
examples/stm32h7/src/bin/spi.rs
View File

@ -12,8 +12,8 @@ use embassy_stm32::dma::NoDma;
use embassy_stm32::peripherals::SPI3;
use embassy_stm32::time::mhz;
use embassy_stm32::{spi, Config};
use embassy_util::Forever;
use heapless::String;
use static_cell::StaticCell;
use {defmt_rtt as _, panic_probe as _};
#[embassy_executor::task]
@ -31,7 +31,7 @@ async fn main_task(mut spi: spi::Spi<'static, SPI3, NoDma, NoDma>) {
}
}
static EXECUTOR: Forever<Executor> = Forever::new();
static EXECUTOR: StaticCell<Executor> = StaticCell::new();
#[entry]
fn main() -> ! {
@ -54,7 +54,7 @@ fn main() -> ! {
spi::Config::default(),
);
let executor = EXECUTOR.put(Executor::new());
let executor = EXECUTOR.init(Executor::new());
executor.run(|spawner| {
unwrap!(spawner.spawn(main_task(spi)));

6
examples/stm32h7/src/bin/spi_dma.rs
View File

@ -11,8 +11,8 @@ use embassy_executor::Executor;
use embassy_stm32::peripherals::{DMA1_CH3, DMA1_CH4, SPI3};
use embassy_stm32::time::mhz;
use embassy_stm32::{spi, Config};
use embassy_util::Forever;
use heapless::String;
use static_cell::StaticCell;
use {defmt_rtt as _, panic_probe as _};
#[embassy_executor::task]
@ -27,7 +27,7 @@ async fn main_task(mut spi: spi::Spi<'static, SPI3, DMA1_CH3, DMA1_CH4>) {
}
}
static EXECUTOR: Forever<Executor> = Forever::new();
static EXECUTOR: StaticCell<Executor> = StaticCell::new();
#[entry]
fn main() -> ! {
@ -50,7 +50,7 @@ fn main() -> ! {
spi::Config::default(),
);
let executor = EXECUTOR.put(Executor::new());
let executor = EXECUTOR.init(Executor::new());
executor.run(|spawner| {
unwrap!(spawner.spawn(main_task(spi)));

6
examples/stm32h7/src/bin/usart.rs
View File

@ -7,7 +7,7 @@ use defmt::*;
use embassy_executor::Executor;
use embassy_stm32::dma::NoDma;
use embassy_stm32::usart::{Config, Uart};
use embassy_util::Forever;
use static_cell::StaticCell;
use {defmt_rtt as _, panic_probe as _};
#[embassy_executor::task]
@ -27,13 +27,13 @@ async fn main_task() {
}
}
static EXECUTOR: Forever<Executor> = Forever::new();
static EXECUTOR: StaticCell<Executor> = StaticCell::new();
#[entry]
fn main() -> ! {
info!("Hello World!");
let executor = EXECUTOR.put(Executor::new());
let executor = EXECUTOR.init(Executor::new());
executor.run(|spawner| {
unwrap!(spawner.spawn(main_task()));

6
examples/stm32h7/src/bin/usart_dma.rs
View File

@ -9,8 +9,8 @@ use defmt::*;
use embassy_executor::Executor;
use embassy_stm32::dma::NoDma;
use embassy_stm32::usart::{Config, Uart};
use embassy_util::Forever;
use heapless::String;
use static_cell::StaticCell;
use {defmt_rtt as _, panic_probe as _};
#[embassy_executor::task]
@ -30,13 +30,13 @@ async fn main_task() {
}
}
static EXECUTOR: Forever<Executor> = Forever::new();
static EXECUTOR: StaticCell<Executor> = StaticCell::new();
#[entry]
fn main() -> ! {
info!("Hello World!");
let executor = EXECUTOR.put(Executor::new());
let executor = EXECUTOR.init(Executor::new());
executor.run(|spawner| {
unwrap!(spawner.spawn(main_task()));

1
examples/stm32l0/Cargo.toml
View File

@ -29,3 +29,4 @@ panic-probe = { version = "0.3", features = ["print-defmt"] }
futures = { version = "0.3.17", default-features = false, features = ["async-await"] }
heapless = { version = "0.7.5", default-features = false }
embedded-hal = "0.2.6"
static_cell = "1.0"

6
examples/stm32l0/src/bin/raw_spawn.rs
View File

@ -8,7 +8,7 @@ use defmt::*;
use embassy_executor::raw::TaskStorage;
use embassy_executor::Executor;
use embassy_time::{Duration, Timer};
use embassy_util::Forever;
use static_cell::StaticCell;
use {defmt_rtt as _, panic_probe as _};
async fn run1() {
@ -25,14 +25,14 @@ async fn run2() {
}
}
static EXECUTOR: Forever<Executor> = Forever::new();
static EXECUTOR: StaticCell<Executor> = StaticCell::new();
#[entry]
fn main() -> ! {
info!("Hello World!");
let _p = embassy_stm32::init(Default::default());
let executor = EXECUTOR.put(Executor::new());
let executor = EXECUTOR.init(Executor::new());
let run1_task = TaskStorage::new();
let run2_task = TaskStorage::new();

1
examples/stm32l5/Cargo.toml
View File

@ -28,3 +28,4 @@ futures = { version = "0.3.17", default-features = false, features = ["async-awa
heapless = { version = "0.7.5", default-features = false }
rand_core = { version = "0.6.3", default-features = false }
embedded-io = { version = "0.3.0", features = ["async"] }
static_cell = "1.0"

14
examples/stm32l5/src/bin/usb_ethernet.rs
View File

@ -19,18 +19,18 @@ use embassy_usb::{Builder, UsbDevice};
use embassy_usb_ncm::{CdcNcmClass, Receiver, Sender, State};
use embassy_util::blocking_mutex::raw::ThreadModeRawMutex;
use embassy_util::channel::mpmc::Channel;
use embassy_util::Forever;
use embedded_io::asynch::{Read, Write};
use rand_core::RngCore;
use static_cell::StaticCell;
use {defmt_rtt as _, panic_probe as _};
type MyDriver = Driver<'static, embassy_stm32::peripherals::USB>;
macro_rules! forever {
macro_rules! singleton {
($val:expr) => {{
type T = impl Sized;
static FOREVER: Forever<T> = Forever::new();
FOREVER.put_with(move || $val)
static STATIC_CELL: StaticCell<T> = StaticCell::new();
STATIC_CELL.init_with(move || $val)
}};
}
@ -115,7 +115,7 @@ async fn main(spawner: Spawner) {
control_buf: [u8; 128],
serial_state: State<'static>,
}
let res: &mut Resources = forever!(Resources {
let res: &mut Resources = singleton!(Resources {
device_descriptor: [0; 256],
config_descriptor: [0; 256],
bos_descriptor: [0; 256],
@ -171,10 +171,10 @@ async fn main(spawner: Spawner) {
// Init network stack
let device = Device { mac_addr: our_mac_addr };
let stack = &*forever!(Stack::new(
let stack = &*singleton!(Stack::new(
device,
config,
forever!(StackResources::<1, 2, 8>::new()),
singleton!(StackResources::<1, 2, 8>::new()),
seed
));