1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
|
//! This example shows how to send messages between the two cores in the RP2040 chip.
//!
//! The LED on the RP Pico W board is connected differently. See wifi_blinky.rs.
#![no_std]
#![no_main]
#![feature(type_alias_impl_trait)]
use defmt::*;
use embassy_executor::Executor;
use embassy_rp::gpio::{Level, Output};
use embassy_rp::multicore::{spawn_core1, Stack};
use embassy_rp::peripherals::PIN_25;
use embassy_sync::blocking_mutex::raw::CriticalSectionRawMutex;
use embassy_sync::channel::Channel;
use embassy_time::{Duration, Timer};
use static_cell::StaticCell;
use {defmt_rtt as _, panic_probe as _};
static mut CORE1_STACK: Stack<4096> = Stack::new();
static EXECUTOR0: StaticCell<Executor> = StaticCell::new();
static EXECUTOR1: StaticCell<Executor> = StaticCell::new();
static CHANNEL: Channel<CriticalSectionRawMutex, LedState, 1> = Channel::new();
enum LedState {
On,
Off,
}
#[cortex_m_rt::entry]
fn main() -> ! {
let p = embassy_rp::init(Default::default());
let led = Output::new(p.PIN_25, Level::Low);
spawn_core1(p.CORE1, unsafe { &mut CORE1_STACK }, move || {
let executor1 = EXECUTOR1.init(Executor::new());
executor1.run(|spawner| unwrap!(spawner.spawn(core1_task(led))));
});
let executor0 = EXECUTOR0.init(Executor::new());
executor0.run(|spawner| unwrap!(spawner.spawn(core0_task())));
}
#[embassy_executor::task]
async fn core0_task() {
info!("Hello from core 0");
loop {
CHANNEL.send(LedState::On).await;
Timer::after(Duration::from_millis(100)).await;
CHANNEL.send(LedState::Off).await;
Timer::after(Duration::from_millis(400)).await;
}
}
#[embassy_executor::task]
async fn core1_task(mut led: Output<'static, PIN_25>) {
info!("Hello from core 1");
loop {
match CHANNEL.receive().await {
LedState::On => led.set_high(),
LedState::Off => led.set_low(),
}
}
}
|
