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https://github.com/esp-rs/esp-hal.git
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db409ffe7b
* Unify the system peripheral Whilst the PCR, SYSTEM and DPORT peripherals are different, we currently use them all in the same way. This PR unifies the peripheral name in the hal to `SYSTEM`. The idea is that they all do the same sort of thing, so we can collect them under the same name, and later down the line we can being to expose differences under an extended API. The benifits to this are imo quite big, the examples now are all identical, which makes things easier for esp-wifi, and paves a path towards the multichip hal. Why not do this in the PAC? Imo the pac should be as close to the hardware as possible, and the HAL is where we should abstractions such as this. * changelog
71 lines
1.9 KiB
Rust
71 lines
1.9 KiB
Rust
//! This shows how to spawn a task on the second core.
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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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#![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 esp32_hal::{
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clock::ClockControl,
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cpu_control::{CpuControl, Stack},
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peripherals::{Peripherals, TIMG1},
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prelude::*,
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timer::{Timer, Timer0, TimerGroup},
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};
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use esp_backtrace as _;
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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 timer_group0 = TimerGroup::new(peripherals.TIMG0, &clocks);
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let mut timer0 = timer_group0.timer0;
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let timer_group1 = TimerGroup::new(peripherals.TIMG1, &clocks);
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let mut timer1 = timer_group1.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(0));
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let mut cpu_control = CpuControl::new(system.cpu_control);
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let cpu1_fnctn = || {
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cpu1_task(&mut timer1, &counter);
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};
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let _guard = cpu_control
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.start_app_core(unsafe { &mut APP_CORE_STACK }, cpu1_fnctn)
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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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fn cpu1_task(
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timer: &mut Timer<Timer0<TIMG1>>,
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counter: &critical_section::Mutex<RefCell<i32>>,
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) -> ! {
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println!("Hello World - Core 1!");
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loop {
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block!(timer.wait()).unwrap();
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critical_section::with(|cs| {
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let new_val = counter.borrow_ref_mut(cs).wrapping_add(1);
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*counter.borrow_ref_mut(cs) = new_val;
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});
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}
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}
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