99bf346898
* Clean up passing clocks to drivers * Update changelog * Initialise Clocks in a critical section * Fix calling now() before init * Fix doc * Fix esp-wifi migration guide * Add safety comment * Update tests
68 lines
1.9 KiB
Rust
68 lines
1.9 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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//! The following wiring is assumed:
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//! - LED => GPIO0
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//% CHIPS: esp32 esp32c2 esp32c3 esp32c6 esp32h2 esp32s2 esp32s3
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#![no_std]
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#![no_main]
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use esp_backtrace as _;
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use esp_hal::{
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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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Ledc,
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LowSpeed,
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},
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prelude::*,
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};
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#[entry]
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fn main() -> ! {
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let peripherals = esp_hal::init(esp_hal::Config::default());
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let io = Io::new(peripherals.GPIO, peripherals.IO_MUX);
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let led = io.pins.gpio0;
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let mut ledc = Ledc::new(peripherals.LEDC);
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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: 24.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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