Enum hd44780_ntb::HdError

pub enum HdError {
    InvalidDataBusLen,
    InvalidLineAndFontMode,
    SetOutputPin(&'static str),
    UnknownCommand(u8),
    Write(Error),
}

Provides a shared set of error types.

Variants

InvalidDataBusLen

Used if data bus given is not 4 or 8 bits long.

InvalidLineAndFontMode

Used by [function_set()] for un-supported mode setting.

SetOutputPin(&'static str)

Used if given output GPIO pin can not be set.

UnknownCommand(u8)

Used when decoding HD44780 commands.

Write(Error)

Used if under-laying IO Error happens.

Trait Implementations

impl Debug for HdError

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

Formats the value using the given formatter.

impl Display for HdError

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

Formats the value using the given formatter.

impl Error for HdError

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

The lower-level source of this error, if any.

fn backtrace(&self) -> Option<&Backtrace>

🔬 This is a nightly-only experimental API. (backtrace)

Returns a stack backtrace, if available, of where this error occurred.

fn description(&self) -> &str

👎 Deprecated since 1.42.0:

use the Display impl or to_string()

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

👎 Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

impl From<Error> for HdError

fn from(source: Error) -> Self

Performs the conversion.

impl From<HdError> for Error

fn from(he: HdError) -> Self

Performs the conversion.