65 lines
1.8 KiB
Rust
65 lines
1.8 KiB
Rust
//! This example shows how to send messages between the two cores in the RP2040 chip.
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//!
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//! The LED on the RP Pico W board is connected differently. See wifi_blinky.rs.
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#![no_std]
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#![no_main]
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#![feature(type_alias_impl_trait)]
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use defmt::*;
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use embassy_executor::Executor;
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use embassy_rp::gpio::{Level, Output};
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use embassy_rp::multicore::{spawn_core1, Stack};
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use embassy_rp::peripherals::PIN_25;
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use embassy_sync::blocking_mutex::raw::CriticalSectionRawMutex;
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use embassy_sync::channel::Channel;
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use embassy_time::Timer;
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use static_cell::StaticCell;
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use {defmt_rtt as _, panic_probe as _};
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static mut CORE1_STACK: Stack<4096> = Stack::new();
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static EXECUTOR0: StaticCell<Executor> = StaticCell::new();
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static EXECUTOR1: StaticCell<Executor> = StaticCell::new();
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static CHANNEL: Channel<CriticalSectionRawMutex, LedState, 1> = Channel::new();
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enum LedState {
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On,
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Off,
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}
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#[cortex_m_rt::entry]
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fn main() -> ! {
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let p = embassy_rp::init(Default::default());
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let led = Output::new(p.PIN_25, Level::Low);
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spawn_core1(p.CORE1, unsafe { &mut CORE1_STACK }, move || {
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let executor1 = EXECUTOR1.init(Executor::new());
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executor1.run(|spawner| unwrap!(spawner.spawn(core1_task(led))));
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});
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let executor0 = EXECUTOR0.init(Executor::new());
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executor0.run(|spawner| unwrap!(spawner.spawn(core0_task())));
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}
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#[embassy_executor::task]
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async fn core0_task() {
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info!("Hello from core 0");
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loop {
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CHANNEL.send(LedState::On).await;
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Timer::after_millis(100).await;
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CHANNEL.send(LedState::Off).await;
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Timer::after_millis(400).await;
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}
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}
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#[embassy_executor::task]
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async fn core1_task(mut led: Output<'static, PIN_25>) {
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info!("Hello from core 1");
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loop {
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match CHANNEL.receive().await {
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LedState::On => led.set_high(),
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LedState::Off => led.set_low(),
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}
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}
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}
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