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https://github.com/esp-rs/esp-hal.git
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0064766ef2
* No longer publicly expose the `PeripheralClockControl` struct * Update examples as needed to get things building again * Update CHANGELOG.md * Address review feedback, fix a warning * Use a critical section for all devices other than the ESP32-C6/H2, as they modify multiple registers * Rebase and update `etm` driver to fix build errors
69 lines
2.0 KiB
Rust
69 lines
2.0 KiB
Rust
//! Turns on LED with the option to change LED intensity depending on `duty`
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//! value. Possible values (`u32`) are in range 0..100.
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//!
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//! This assumes that a LED is connected to the pin assigned to `led`. (GPIO4)
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#![no_std]
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#![no_main]
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use esp32s3_hal::{
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clock::ClockControl,
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gpio::IO,
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ledc::{
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channel::{self, ChannelIFace},
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timer::{self, TimerIFace},
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LSGlobalClkSource,
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LowSpeed,
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LEDC,
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},
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peripherals::Peripherals,
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prelude::*,
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};
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use esp_backtrace as _;
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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 io = IO::new(peripherals.GPIO, peripherals.IO_MUX);
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let led = io.pins.gpio4.into_push_pull_output();
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let mut ledc = LEDC::new(peripherals.LEDC, &clocks);
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ledc.set_global_slow_clock(LSGlobalClkSource::APBClk);
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let mut lstimer0 = ledc.get_timer::<LowSpeed>(timer::Number::Timer0);
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lstimer0
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.configure(timer::config::Config {
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duty: timer::config::Duty::Duty5Bit,
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clock_source: timer::LSClockSource::APBClk,
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frequency: 24u32.kHz(),
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})
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.unwrap();
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let mut channel0 = ledc.get_channel(channel::Number::Channel0, led);
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channel0
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.configure(channel::config::Config {
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timer: &lstimer0,
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duty_pct: 10,
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pin_config: channel::config::PinConfig::PushPull,
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})
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.unwrap();
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channel0.start_duty_fade(0, 100, 2000).expect_err(
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"Fading from 0% to 100%, at 24kHz and 5-bit resolution, over 2 seconds, should fail",
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);
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loop {
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// Set up a breathing LED: fade from off to on over a second, then
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// from on back off over the next second. Then loop.
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channel0.start_duty_fade(0, 100, 1000).unwrap();
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while channel0.is_duty_fade_running() {}
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channel0.start_duty_fade(100, 0, 1000).unwrap();
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while channel0.is_duty_fade_running() {}
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}
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}
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