diff --git a/embassy-rp/src/pio.rs b/embassy-rp/src/pio.rs index 52ef89a1..769641ac 100644 --- a/embassy-rp/src/pio.rs +++ b/embassy-rp/src/pio.rs @@ -180,21 +180,12 @@ impl<'a, 'd, PIO: PioInstance, const SM: usize> Drop for FifoInFuture<'a, 'd, PI /// Future that waits for IRQ #[must_use = "futures do nothing unless you `.await` or poll them"] -pub struct IrqFuture { - pio: PhantomData, +pub struct IrqFuture<'a, 'd, PIO: PioInstance> { + pio: PhantomData<&'a PioIrq<'d, PIO, 0>>, irq_no: u8, } -impl<'a, PIO: PioInstance> IrqFuture { - pub fn new(irq_no: u8) -> Self { - IrqFuture { - pio: PhantomData::default(), - irq_no, - } - } -} - -impl<'d, PIO: PioInstance> Future for IrqFuture { +impl<'a, 'd, PIO: PioInstance> Future for IrqFuture<'a, 'd, PIO> { type Output = (); fn poll(self: FuturePin<&mut Self>, cx: &mut Context<'_>) -> Poll { //debug!("Poll {},{}", PIO::PIO_NO, SM); @@ -224,7 +215,7 @@ impl<'d, PIO: PioInstance> Future for IrqFuture { } } -impl<'d, PIO: PioInstance> Drop for IrqFuture { +impl<'a, 'd, PIO: PioInstance> Drop for IrqFuture<'a, 'd, PIO> { fn drop(&mut self) { unsafe { PIO::PIO.irqs(0).inte().write_clear(|m| { @@ -688,10 +679,6 @@ impl<'d, PIO: PioInstance + 'd, const SM: usize> PioStateMachine<'d, PIO, SM> { FifoInFuture::new(self) } - pub fn wait_irq(&self, irq_no: u8) -> IrqFuture { - IrqFuture::new(irq_no) - } - pub fn has_tx_stalled(&self) -> bool { unsafe { let fdebug = PIO::PIO.fdebug(); @@ -862,7 +849,8 @@ impl<'d, PIO: PioInstance> PioCommon<'d, PIO> { /// Register a pin for PIO usage. Pins will be released from the PIO block /// (i.e., have their `FUNCSEL` reset to `NULL`) when the [`PioCommon`] *and* - /// all [`PioStateMachine`]s for this block have been dropped. + /// all [`PioStateMachine`]s for this block have been dropped. **Other members + /// of [`Pio`] do not keep pin registrations alive.** pub fn make_pio_pin(&mut self, pin: impl Peripheral

+ 'd) -> Pin<'d, PIO> { into_ref!(pin); unsafe { @@ -877,8 +865,25 @@ impl<'d, PIO: PioInstance> PioCommon<'d, PIO> { } } +pub struct PioIrq<'d, PIO: PioInstance, const N: usize> { + pio: PhantomData<&'d PIO>, +} + +impl<'d, PIO: PioInstance, const N: usize> PioIrq<'d, PIO, N> { + pub fn wait<'a>(&'a mut self) -> IrqFuture<'a, 'd, PIO> { + IrqFuture { + pio: PhantomData, + irq_no: N as u8, + } + } +} + pub struct Pio<'d, PIO: PioInstance> { pub common: PioCommon<'d, PIO>, + pub irq0: PioIrq<'d, PIO, 0>, + pub irq1: PioIrq<'d, PIO, 1>, + pub irq2: PioIrq<'d, PIO, 2>, + pub irq3: PioIrq<'d, PIO, 3>, pub sm0: PioStateMachine<'d, PIO, 0>, pub sm1: PioStateMachine<'d, PIO, 1>, pub sm2: PioStateMachine<'d, PIO, 2>, @@ -894,6 +899,10 @@ impl<'d, PIO: PioInstance> Pio<'d, PIO> { instructions_used: 0, pio: PhantomData, }, + irq0: PioIrq { pio: PhantomData }, + irq1: PioIrq { pio: PhantomData }, + irq2: PioIrq { pio: PhantomData }, + irq3: PioIrq { pio: PhantomData }, sm0: PioStateMachine { pio: PhantomData }, sm1: PioStateMachine { pio: PhantomData }, sm2: PioStateMachine { pio: PhantomData }, diff --git a/examples/rp/src/bin/pio_async.rs b/examples/rp/src/bin/pio_async.rs index 11b29086..3d76a7d7 100644 --- a/examples/rp/src/bin/pio_async.rs +++ b/examples/rp/src/bin/pio_async.rs @@ -4,7 +4,7 @@ use defmt::info; use embassy_executor::Spawner; use embassy_rp::peripherals::PIO0; -use embassy_rp::pio::{Pio, PioCommon, PioPin, PioStateMachine, ShiftDirection}; +use embassy_rp::pio::{Pio, PioCommon, PioIrq, PioPin, PioStateMachine, ShiftDirection}; use embassy_rp::pio_instr_util; use embassy_rp::relocate::RelocatedProgram; use {defmt_rtt as _, panic_probe as _}; @@ -99,10 +99,10 @@ fn setup_pio_task_sm2(pio: &mut PioCommon, sm: &mut PioStateMachine) { +async fn pio_task_sm2(mut irq: PioIrq<'static, PIO0, 3>, mut sm: PioStateMachine<'static, PIO0, 2>) { sm.set_enable(true); loop { - sm.wait_irq(3).await; + irq.wait().await; info!("IRQ trigged"); } } @@ -114,6 +114,7 @@ async fn main(spawner: Spawner) { let Pio { mut common, + irq3, mut sm0, mut sm1, mut sm2, @@ -125,5 +126,5 @@ async fn main(spawner: Spawner) { setup_pio_task_sm2(&mut common, &mut sm2); spawner.spawn(pio_task_sm0(sm0)).unwrap(); spawner.spawn(pio_task_sm1(sm1)).unwrap(); - spawner.spawn(pio_task_sm2(sm2)).unwrap(); + spawner.spawn(pio_task_sm2(irq3, sm2)).unwrap(); } diff --git a/examples/rp/src/bin/pio_hd44780.rs b/examples/rp/src/bin/pio_hd44780.rs index bc51d43c..7c1d7acf 100644 --- a/examples/rp/src/bin/pio_hd44780.rs +++ b/examples/rp/src/bin/pio_hd44780.rs @@ -85,7 +85,10 @@ impl<'l> HD44780<'l> { let db7pin = db7.pin(); let Pio { - mut common, mut sm0, .. + mut common, + mut irq0, + mut sm0, + .. } = Pio::new(pio); // takes command words ( <0:4>) @@ -145,7 +148,7 @@ impl<'l> HD44780<'l> { sm0.push_tx((50 << 8) | 0x20); sm0.push_tx(0b1100_0000); - sm0.wait_irq(0).await; + irq0.wait().await; sm0.set_enable(false); // takes command sequences ( , data...)