Struct LED 

pub struct LED {
    pub brightness: f64,
    /* private fields */
}

Represents a single LED on the Automation HAT.

The LED struct provides control over a single LED, allowing it to be turned on/off or set to a specific brightness level. LEDs are controlled through the SN3218 LED driver chip which supports 18 channels with 255 brightness levels each.

Fields

brightness: f64

Current brightness value (0.0-1.0)

Implementations

impl LED

pub fn new(driver: Arc<Mutex<SN3218<I2cdev>>>, channel: u8) -> Self

Creates a new LED instance for the specified channel.

Arguments

• driver - Shared reference to the SN3218 LED driver
• channel - The channel number (0-17) on the SN3218 chip

Returns

A new LED instance initialized to off (brightness 0.0)

pub fn on(&mut self) -> Result<(), Box<dyn Error>>

Turns the LED on at full brightness.

Returns

A Result indicating success or containing an error

pub fn off(&mut self) -> Result<(), Box<dyn Error>>

Turns the LED off (brightness 0.0).

Returns

A Result indicating success or containing an error

pub fn toggle(&mut self) -> Result<(), Box<dyn Error>>

Toggles the LED between on and off states.

If the LED is currently off (brightness 0.0), it will be turned on. Otherwise, it will be turned off.

Returns

A Result indicating success or containing an error

pub fn set_brightness(&mut self, brightness: f64) -> Result<(), Box<dyn Error>>

Sets the LED brightness to a specific value.

Arguments

• brightness - A value between 0.0 (off) and 1.0 (full brightness)

Returns

A Result indicating success or containing an error

Errors

Returns an error if the brightness value is outside the valid range of 0.0 to 1.0, or if communication with the LED driver fails.

pub fn set(&mut self, brightness: f64) -> Result<(), Box<dyn Error>>

Alias for set_brightness - sets the LED to a specific brightness.

Arguments

• brightness - A value between 0.0 (off) and 1.0 (full brightness)

Returns

A Result indicating success or containing an error

Trait Implementations

impl Clone for LED

Implement Clone for LED to allow LED objects to be duplicated. This is useful when the same LED needs to be shared between multiple components.

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for LED

Implement Debug for LED to allow for easier debugging and printing of LED objects.

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.