esp-hal/esp32c3-hal/examples/sleep_timer.rs
jneem d819945522
Sleep support for esp32c3 (#795)
* Make the example work

* Make GPIO wakeups work

* Add example

* revert hello_rgb change

* Clean up the first hacky version

* Fix example warnings

* Add changelog entry

* Fix example comment

* Stop skipping rustfmt
2023-09-29 08:09:50 -07:00

42 lines
1.1 KiB
Rust

//! Demonstrates deep sleep with timer wakeup
#![no_std]
#![no_main]
use core::time::Duration;
use esp32c3_hal as hal;
use esp_backtrace as _;
use esp_println::println;
use hal::{
clock::ClockControl,
entry,
peripherals::Peripherals,
prelude::*,
rtc_cntl::{get_reset_reason, get_wakeup_cause, sleep::TimerWakeupSource, SocResetReason},
Delay,
Rtc,
};
#[entry]
fn main() -> ! {
let peripherals = Peripherals::take();
let system = peripherals.SYSTEM.split();
let clocks = ClockControl::boot_defaults(system.clock_control).freeze();
let mut rtc = Rtc::new(peripherals.RTC_CNTL);
println!("up and runnning!");
let reason = get_reset_reason(hal::Cpu::ProCpu).unwrap_or(SocResetReason::ChipPowerOn);
println!("reset reason: {:?}", reason);
let wake_reason = get_wakeup_cause();
println!("wake reason: {:?}", wake_reason);
let mut delay = Delay::new(&clocks);
let timer = TimerWakeupSource::new(Duration::from_secs(30));
println!("sleeping!");
delay.delay_ms(100u32);
rtc.sleep_deep(&[&timer], &mut delay);
}