Enum rppal::gpio::Error

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pub enum Error {
    UnknownModel,
    PinUsed(u8),
    PinNotAvailable(u8),
    PermissionDenied(String),
    Io(Error),
    ThreadPanic,
}
Expand description

Errors that can occur when accessing the GPIO peripheral.

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UnknownModel

Unknown model.

The Raspberry Pi model or SoC can’t be identified. Support for new models is usually added shortly after they are officially announced and available to the public. Make sure you’re using the latest release of RPPAL.

You may also encounter this error if your Linux distribution doesn’t provide any of the common user-accessible system files that are used to identify the model and SoC.

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PinUsed(u8)

Pin is already in use.

The pin is already in use elsewhere in your application. If the pin is currently in use, you may retrieve it again after the Pin (or a derived InputPin, OutputPin or IoPin) instance goes out of scope.

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PinNotAvailable(u8)

Pin is not available.

The GPIO peripheral doesn’t expose a GPIO pin with the specified number. Pins are addressed by their BCM GPIO numbers, rather than their physical location on the GPIO header.

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PermissionDenied(String)

Permission denied when opening /dev/gpiomem, /dev/mem or /dev/gpiochipN for read/write access.

More information on possible causes for this error can be found here.

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Io(Error)

I/O error.

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ThreadPanic

Thread panicked.

Trait Implementations§

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impl Debug for Error

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

Formats the value using the given formatter. Read more
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impl Display for Error

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

Formats the value using the given formatter. Read more
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impl Error for Error

1.30.0 · source§

fn source(&self) -> Option<&(dyn Error + 'static)>

The lower-level source of this error, if any. Read more
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fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()
1.0.0 · source§

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0: replaced by Error::source, which can support downcasting
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fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)
Provides type based access to context intended for error reports. Read more
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impl From<Error> for Error

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fn from(_err: Error) -> Error

Converts to this type from the input type.
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impl From<Error> for Error

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fn from(err: Error) -> Error

Converts to this type from the input type.
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impl From<Error> for Error

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fn from(err: Error) -> Error

Converts to this type from the input type.

Auto Trait Implementations§

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impl !RefUnwindSafe for Error

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impl Send for Error

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impl Sync for Error

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impl Unpin for Error

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impl !UnwindSafe for Error

Blanket Implementations§

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impl<T> Any for Twhere T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for Twhere T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for Twhere T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for Twhere U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToString for Twhere T: Display + ?Sized,

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default fn to_string(&self) -> String

Converts the given value to a String. Read more
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impl<T, U> TryFrom<U> for Twhere U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.