Struct sysfs_gpio::PinPoller
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[src]
pub struct PinPoller { /* fields omitted */ }
Methods
impl PinPoller[src]
pub fn get_pin(&self) -> Pin[src]
Get the pin associated with this PinPoller
Note that this will be a new Pin object with the proper pin number.
pub fn new(pin_num: u64) -> Result<PinPoller>[src]
Create a new PinPoller for the provided pin number
pub fn poll(&mut self, timeout_ms: isize) -> Result<Option<u8>>[src]
Block until an interrupt occurs
This call will block until an interrupt occurs. The types
of interrupts which may result in this call returning
may be configured by calling set_edge() prior to
making this call. This call makes use of epoll under the
covers. To poll on multiple GPIOs or other event sources,
poll asynchronously using the integration with either mio
or tokio_core.
This function will return Some(value) of the pin if a change is detected or None if a timeout occurs. Note that the value provided is the value of the pin as soon as we get to handling the interrupt in userspace. Each time this function returns with a value, a change has occurred, but you could end up reading the same value multiple times as the value has changed back between when the interrupt occurred and the current time.
Trait Implementations
impl Debug for PinPoller[src]
fn fmt(&self, __arg_0: &mut Formatter) -> Result[src]
Formats the value using the given formatter. Read more