rename `rp23` (?) folder to `rp235x`; fix `ci.sh` to use `rp235x` folder

1 files changed, 131 insertions, 0 deletions

diff --git a/examples/rp235x/src/bin/pio_async.rs b/examples/rp235x/src/bin/pio_async.rs
new file mode 100644
index 000000000..08c702347
--- /dev/null
+++ b/examples/rp235x/src/bin/pio_async.rs
@@ -0,0 +1,131 @@
+//! This example shows powerful PIO module in the RP2040 chip.
+
+#![no_std]
+#![no_main]
+use defmt::info;
+use embassy_executor::Spawner;
+use embassy_rp::bind_interrupts;
+use embassy_rp::peripherals::PIO0;
+use embassy_rp::pio::program::pio_asm;
+use embassy_rp::pio::{Common, Config, InterruptHandler, Irq, Pio, PioPin, ShiftDirection, StateMachine};
+use fixed::traits::ToFixed;
+use fixed_macro::types::U56F8;
+use {defmt_rtt as _, panic_probe as _};
+
+bind_interrupts!(struct Irqs {
+    PIO0_IRQ_0 => InterruptHandler<PIO0>;
+});
+
+fn setup_pio_task_sm0<'a>(pio: &mut Common<'a, PIO0>, sm: &mut StateMachine<'a, PIO0, 0>, pin: impl PioPin) {
+    // Setup sm0
+
+    // Send data serially to pin
+    let prg = pio_asm!(
+        ".origin 16",
+        "set pindirs, 1",
+        ".wrap_target",
+        "out pins,1 [19]",
+        ".wrap",
+    );
+
+    let mut cfg = Config::default();
+    cfg.use_program(&pio.load_program(&prg.program), &[]);
+    let out_pin = pio.make_pio_pin(pin);
+    cfg.set_out_pins(&[&out_pin]);
+    cfg.set_set_pins(&[&out_pin]);
+    cfg.clock_divider = (U56F8!(125_000_000) / 20 / 200).to_fixed();
+    cfg.shift_out.auto_fill = true;
+    sm.set_config(&cfg);
+}
+
+#[embassy_executor::task]
+async fn pio_task_sm0(mut sm: StateMachine<'static, PIO0, 0>) {
+    sm.set_enable(true);
+
+    let mut v = 0x0f0caffa;
+    loop {
+        sm.tx().wait_push(v).await;
+        v ^= 0xffff;
+        info!("Pushed {:032b} to FIFO", v);
+    }
+}
+
+fn setup_pio_task_sm1<'a>(pio: &mut Common<'a, PIO0>, sm: &mut StateMachine<'a, PIO0, 1>) {
+    // Setupm sm1
+
+    // Read 0b10101 repeatedly until ISR is full
+    let prg = pio_asm!(
+        //
+        ".origin 8",
+        "set x, 0x15",
+        ".wrap_target",
+        "in x, 5 [31]",
+        ".wrap",
+    );
+
+    let mut cfg = Config::default();
+    cfg.use_program(&pio.load_program(&prg.program), &[]);
+    cfg.clock_divider = (U56F8!(125_000_000) / 2000).to_fixed();
+    cfg.shift_in.auto_fill = true;
+    cfg.shift_in.direction = ShiftDirection::Right;
+    sm.set_config(&cfg);
+}
+
+#[embassy_executor::task]
+async fn pio_task_sm1(mut sm: StateMachine<'static, PIO0, 1>) {
+    sm.set_enable(true);
+    loop {
+        let rx = sm.rx().wait_pull().await;
+        info!("Pulled {:032b} from FIFO", rx);
+    }
+}
+
+fn setup_pio_task_sm2<'a>(pio: &mut Common<'a, PIO0>, sm: &mut StateMachine<'a, PIO0, 2>) {
+    // Setup sm2
+
+    // Repeatedly trigger IRQ 3
+    let prg = pio_asm!(
+        ".origin 0",
+        ".wrap_target",
+        "set x,10",
+        "delay:",
+        "jmp x-- delay [15]",
+        "irq 3 [15]",
+        ".wrap",
+    );
+    let mut cfg = Config::default();
+    cfg.use_program(&pio.load_program(&prg.program), &[]);
+    cfg.clock_divider = (U56F8!(125_000_000) / 2000).to_fixed();
+    sm.set_config(&cfg);
+}
+
+#[embassy_executor::task]
+async fn pio_task_sm2(mut irq: Irq<'static, PIO0, 3>, mut sm: StateMachine<'static, PIO0, 2>) {
+    sm.set_enable(true);
+    loop {
+        irq.wait().await;
+        info!("IRQ trigged");
+    }
+}
+
+#[embassy_executor::main]
+async fn main(spawner: Spawner) {
+    let p = embassy_rp::init(Default::default());
+    let pio = p.PIO0;
+
+    let Pio {
+        mut common,
+        irq3,
+        mut sm0,
+        mut sm1,
+        mut sm2,
+        ..
+    } = Pio::new(pio, Irqs);
+
+    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();
+    spawner.spawn(pio_task_sm1(sm1)).unwrap();
+    spawner.spawn(pio_task_sm2(irq3, sm2)).unwrap();
+}