components

Module button

Source
Expand description

Component for Buttons.

§Usage

The button_component_helper! macro takes ’static references to GPIO pins. When GPIO instances are owned values, the button_component_helper_owned! can be used, indicating that the passed values are owned values. This macro will perform static allocation of the passed in GPIO pins internally.

let button = components::button::ButtonComponent::new(
    board_kernel,
    components::button_component_helper!(
        sam4l::gpio::GPIOPin,
        (
            &sam4l::gpio::PC[24],
            kernel::hil::gpio::ActivationMode::ActiveLow,
            kernel::hil::gpio::FloatingState::PullUp
        )
    ),
)
.finalize(button_component_static!(sam4l::gpio::GPIOPin));

Typically, ActivationMode::ActiveLow will be associated with FloatingState::PullUp whereas ActivationMode::ActiveHigh will be paired with FloatingState::PullDown. FloatingState::None will be used when the board provides external pull-up/pull-down resistors.

Structs§

Type Aliases§