Module esp32c3_hal::ledc

source ·
Expand description

LEDC (LED PWM Controller) peripheral control

Currently only supports fixed-frequency output. Interrupts are not currently implemented. High Speed channels are available for the ESP32 only, while Low Speed channels are available for all supported chips.

LowSpeed Example:

The following will configure the Low Speed Channel0 to 24kHz output with 10% duty using the ABPClock

let mut ledc = LEDC::new(
    peripherals.LEDC,
    &clock_control,
    &mut system.peripheral_clock_control,
);
ledc.set_global_slow_clock(LSGlobalClkSource::APBClk);

let mut lstimer0 = ledc.get_timer::<LowSpeed>(timer::Number::Timer0);
lstimer0
    .configure(timer::config::Config {
        duty: timer::config::Duty::Duty5Bit,
        clock_source: timer::LSClockSource::APBClk,
        frequency: 24u32.kHz(),
    })
    .unwrap();

let mut channel0 = ledc.get_channel(channel::Number::Channel0, led);
channel0
    .configure(channel::config::Config {
        timer: &lstimer0,
        duty: 10,
    })
    .unwrap();

HighSpeed Example (ESP32 only):

The following will configure the High Speed Channel0 to 24kHz output with 10% duty using the ABPClock

let ledc = LEDC::new(
    peripherals.LEDC,
    &clock_control,
    &mut system.peripheral_clock_control,
);

let mut hstimer0 = ledc.get_timer::<HighSpeed>(timer::Number::Timer0);
hstimer0
    .configure(timer::config::Config {
        duty: timer::config::Duty::Duty5Bit,
        clock_source: timer::HSClockSource::APBClk,
        frequency: 24u32.kHz(),
    })
    .unwrap();

let mut channel0 = ledc.get_channel(channel::Number::Channel0, led);
channel0
    .configure(channel::config::Config {
        timer: &hstimer0,
        duty: 10,
    })
    .unwrap();

TODO

  • Source clock selection
  • Interrupts

Modules

Structs

  • LEDC
    LEDC (LED PWM Controller)
  • LowSpeed
    Used to specify LowSpeed Timer/Channel

Enums

Traits