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rp/pio: add PioPin trait

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pio can only access pins in bank 0, so it doesn't make sense to even
allow wrapping of other banks' pins.
This commit is contained in:
pennae
2023-05-03 08:15:46 +02:00
parent 17e78175a6
commit 4ccb2bc95a
4 changed files with 45 additions and 27 deletions
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7
examples/rp/src/bin/pio_async.rs
View File

@ -3,14 +3,13 @@
#![feature(type_alias_impl_trait)]
use defmt::info;
use embassy_executor::Spawner;
use embassy_rp::gpio::{AnyPin, Pin};
use embassy_rp::peripherals::PIO0;
use embassy_rp::pio::{Pio, PioCommon, PioStateMachine, PioStateMachineInstance, ShiftDirection};
use embassy_rp::pio::{Pio, PioCommon, PioPin, PioStateMachine, PioStateMachineInstance, ShiftDirection};
use embassy_rp::pio_instr_util;
use embassy_rp::relocate::RelocatedProgram;
use {defmt_rtt as _, panic_probe as _};
fn setup_pio_task_sm0(pio: &mut PioCommon<PIO0>, sm: &mut PioStateMachineInstance<PIO0, 0>, pin: AnyPin) {
fn setup_pio_task_sm0(pio: &mut PioCommon<PIO0>, sm: &mut PioStateMachineInstance<PIO0, 0>, pin: impl PioPin) {
// Setup sm0
// Send data serially to pin
@ -121,7 +120,7 @@ async fn main(spawner: Spawner) {
..
} = Pio::new(pio);
setup_pio_task_sm0(&mut common, &mut sm0, p.PIN_0.degrade());
setup_pio_task_sm0(&mut common, &mut sm0, p.PIN_0);
setup_pio_task_sm1(&mut common, &mut sm1);
setup_pio_task_sm2(&mut common, &mut sm2);
spawner.spawn(pio_task_sm0(sm0)).unwrap();

17
examples/rp/src/bin/pio_hd44780.rs
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@ -6,9 +6,8 @@ use core::fmt::Write;
use embassy_executor::Spawner;
use embassy_rp::dma::{AnyChannel, Channel};
use embassy_rp::gpio::Pin;
use embassy_rp::peripherals::PIO0;
use embassy_rp::pio::{FifoJoin, Pio, PioStateMachine, PioStateMachineInstance, ShiftDirection};
use embassy_rp::pio::{FifoJoin, Pio, PioPin, PioStateMachine, PioStateMachineInstance, ShiftDirection};
use embassy_rp::pwm::{Config, Pwm};
use embassy_rp::relocate::RelocatedProgram;
use embassy_rp::{into_ref, Peripheral, PeripheralRef};
@ -74,13 +73,13 @@ impl<'l> HD44780<'l> {
pub async fn new(
pio: impl Peripheral<P = PIO0> + 'l,
dma: impl Peripheral<P = impl Channel> + 'l,
rs: impl Pin,
rw: impl Pin,
e: impl Pin,
db4: impl Pin,
db5: impl Pin,
db6: impl Pin,
db7: impl Pin,
rs: impl PioPin,
rw: impl PioPin,
e: impl PioPin,
db4: impl PioPin,
db5: impl PioPin,
db6: impl PioPin,
db7: impl PioPin,
) -> HD44780<'l> {
into_ref!(dma);

7
examples/rp/src/bin/ws2812-pio.rs
View File

@ -4,9 +4,8 @@
use defmt::*;
use embassy_executor::Spawner;
use embassy_rp::gpio::{self, Pin};
use embassy_rp::pio::{
FifoJoin, Pio, PioCommon, PioInstance, PioStateMachine, PioStateMachineInstance, ShiftDirection,
FifoJoin, Pio, PioCommon, PioInstance, PioPin, PioStateMachine, PioStateMachineInstance, ShiftDirection,
};
use embassy_rp::pio_instr_util;
use embassy_rp::relocate::RelocatedProgram;
@ -18,7 +17,7 @@ pub struct Ws2812<'d, P: PioInstance, const S: usize> {
}
impl<'d, P: PioInstance, const S: usize> Ws2812<'d, P, S> {
pub fn new(mut pio: PioCommon<'d, P>, mut sm: PioStateMachineInstance<'d, P, S>, pin: gpio::AnyPin) -> Self {
pub fn new(mut pio: PioCommon<'d, P>, mut sm: PioStateMachineInstance<'d, P, S>, pin: impl PioPin) -> Self {
// Setup sm0
// prepare the PIO program
@ -124,7 +123,7 @@ async fn main(_spawner: Spawner) {
// For the thing plus, use pin 8
// For the feather, use pin 16
let mut ws2812 = Ws2812::new(common, sm0, p.PIN_8.degrade());
let mut ws2812 = Ws2812::new(common, sm0, p.PIN_8);
// Loop forever making RGB values and pushing them out to the WS2812.
loop {