3079d9cc49
* Create an `embedded-hal-02` feature and gate implementations, rename `eh1` to `embedded-hal` * Use native `Delay` APIs in examples where applicable * Fix example imports, be explicit about about `embedded-hal-02` feature requirements * Update `CHANGELOG.md`
67 lines
1.8 KiB
Rust
67 lines
1.8 KiB
Rust
//! This shows how to spawn a task on the second core.
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//!
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//! The first core will print the value of a counter which is incremented by the
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//! second core.
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//% CHIPS: esp32 esp32s3
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//% FEATURES: embedded-hal-02
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#![no_std]
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#![no_main]
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use core::cell::RefCell;
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use critical_section::Mutex;
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use embedded_hal_02::timer::CountDown;
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use esp_backtrace as _;
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use esp_hal::{
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clock::ClockControl,
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cpu_control::{CpuControl, Stack},
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peripherals::Peripherals,
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prelude::*,
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timer::TimerGroup,
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};
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use esp_println::println;
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use nb::block;
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static mut APP_CORE_STACK: Stack<8192> = Stack::new();
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#[entry]
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fn main() -> ! {
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let peripherals = Peripherals::take();
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let system = peripherals.SYSTEM.split();
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let clocks = ClockControl::boot_defaults(system.clock_control).freeze();
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let timg0 = TimerGroup::new(peripherals.TIMG0, &clocks);
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let mut timer0 = timg0.timer0;
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let timg1 = TimerGroup::new(peripherals.TIMG1, &clocks);
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let mut timer1 = timg1.timer0;
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timer0.start(1u64.secs());
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timer1.start(500u64.millis());
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let counter = Mutex::new(RefCell::new(0u32));
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let mut cpu_control = CpuControl::new(system.cpu_control);
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let _guard = cpu_control
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.start_app_core(unsafe { &mut APP_CORE_STACK }, || {
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println!("Hello World - Core 1!");
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loop {
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block!(timer1.wait()).unwrap();
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critical_section::with(|cs| {
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let mut val = counter.borrow_ref_mut(cs);
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*val = val.wrapping_add(1);
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});
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}
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})
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.unwrap();
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loop {
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block!(timer0.wait()).unwrap();
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let count = critical_section::with(|cs| *counter.borrow_ref(cs));
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println!("Hello World - Core 0! Counter is {}", count);
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}
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}
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