Enum Error 

#[non_exhaustive]
pub enum Error {
    Io(Error),
    Backend(Error),
    InvalidConfig(String),
    AlreadyLocked {
        device: String,
        pid: i32,
        lock_file: PathBuf,
    },
    InvalidLock(String),
}

All fallible operations in rtcom-core funnel into this enum.

New variants may be added in minor releases; match with a trailing _ arm when you care about forward-compatibility.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Io(Error)

I/O error from the host OS, typically while reading from or writing to the serial device.

Backend(Error)

Error reported by the underlying serialport / tokio_serial backend (for example, port not found, busy, or unsupported setting).

InvalidConfig(String)

The supplied SerialConfig value is invalid — e.g. a baud rate of zero.

AlreadyLocked

Another live process already owns the device, advertised by a UUCP lock file. The error carries enough context to print a useful diagnostic.

Fields

device: String

Device path the user asked us to open.

pid: i32

PID found in the lock file.

lock_file: PathBuf

Path of the lock file we read.

InvalidLock(String)

A UUCP lock file exists but its content cannot be parsed as a PID. The lock is treated as stale and removed.

Trait Implementations

impl Debug for Error

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

Formats the value using the given formatter.

impl Display for Error

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

Formats the value using the given formatter.

impl Error for Error

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

Returns the lower-level source of this error, if any.

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

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.

impl From<Error> for Error

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<Error> for Error

fn from(source: Error) -> Self

Converts to this type from the input type.