pub trait Pin: Sealed {
// Required method
fn number(&self) -> u8;
// Provided method
fn degrade<'d>(self) -> AnyPin<'d>
where Self: Sized + 'd { ... }
}Expand description
Common trait implemented by pins
Required Methods§
Provided Methods§
Sourcefn degrade<'d>(self) -> AnyPin<'d>where
Self: Sized + 'd,
fn degrade<'d>(self) -> AnyPin<'d>where
Self: Sized + 'd,
Type-erase this pin into an AnyPin.
This function converts pin singletons (GPIO0<'_>, …), which are all
different types, into the same type. It is useful for creating
arrays of pins, or avoiding generics.
§Example
use esp_hal::{
delay::Delay,
gpio::{AnyPin, Level, Output, OutputConfig, Pin},
};
fn toggle_pins(pins: [AnyPin; 2], delay: &mut Delay) {
let [red, blue] = pins;
let mut red = Output::new(red, Level::High, OutputConfig::default());
let mut blue = Output::new(blue, Level::Low, OutputConfig::default());
loop {
red.toggle();
blue.toggle();
delay.delay_millis(500);
}
}
let pins: [AnyPin; 2] = [peripherals.GPIO5.degrade(), peripherals.GPIO4.degrade()];
let mut delay = Delay::new();
toggle_pins(pins, &mut delay);