Struct Flex

pub struct Flex<'d> { /* private fields */ }

GPIO flexible pin.

This pin can either be a disconnected, input, or output pin, or both. The level register bit will remain set while not in output mode, so the pin’s level will be ‘remembered’ when it is not in output mode.

Implementations

impl<'d> Flex<'d>

pub fn new(pin: Peri<'d, impl Pin>) -> Self

Wrap the pin in a Flex.

The pin remains disconnected. The initial output level is unspecified, but can be changed before the pin is put into output mode.

pub fn set_pull(&mut self, pull: Pull)

Set the pin’s pull.

pub fn set_slewrate(&mut self, rate: SlewRate)

pub fn set_schmitt(&mut self, enable: bool)

Set the pin’s Schmitt trigger.

pub fn set_as_input(&mut self)

Put the pin into input mode.

The pull setting is left unchanged.

pub fn set_as_output(&mut self)

Put the pin into output mode.

The pin level will be whatever was set before (or low by default). If you want it to begin at a specific level, call set_high/set_low on the pin first.

pub fn set_as_input_output(&mut self)

Put the pin into input + open-drain output mode.

The hardware will drive the line low if you set it to low, and will leave it floating if you set it to high, in which case you can read the input to figure out whether another device is driving the line low.

The pin level will be whatever was set before (or low by default). If you want it to begin at a specific level, call set_high/set_low on the pin first.

The internal weak pull-up and pull-down resistors will be disabled.

pub fn set_as_disconnected(&mut self)

Set the pin as “disconnected”, ie doing nothing and consuming the lowest amount of power possible.

This is currently the same as [Self::set_as_analog()] but is semantically different really. Drivers should set_as_disconnected() pins when dropped.

Note that this also disables the pull-up and pull-down resistors.

pub fn is_high(&self) -> bool

Get whether the pin input level is high.

pub fn is_low(&self) -> bool

Get whether the pin input level is low.

pub fn get_level(&self) -> Level

Returns current pin level

pub fn set_high(&mut self)

Set the output as high.

pub fn set_low(&mut self)

Set the output as low.

pub fn toggle(&mut self)

Toggle pin output

pub fn set_level(&mut self, level: Level)

Set the output level.

pub fn get_output_level(&self) -> Level

Get the current pin output level.

pub fn is_set_high(&self) -> bool

Is the output level high?

If the Flex is set as an input, then this is equivalent to Flex::is_high.

pub fn is_set_low(&self) -> bool

Is the output level low?

If the Flex is set as an input, then this is equivalent to Flex::is_low.

pub async fn wait_for_high(&mut self)

Wait until the pin is high. If it is already high, return immediately.

pub async fn wait_for_low(&mut self)

Wait until the pin is low. If it is already low, return immediately.

pub async fn wait_for_rising_edge(&mut self)

Wait for the pin to undergo a transition from low to high.

pub async fn wait_for_falling_edge(&mut self)

Wait for the pin to undergo a transition from high to low.

pub async fn wait_for_any_edge(&mut self)

Wait for the pin to undergo any transition, i.e low to high OR high to low.

Trait Implementations

impl<'d> Drop for Flex<'d>

fn drop(&mut self)

Executes the destructor for this type.