Enum Error 

#[non_exhaustive]
pub enum Error {
    ChannelNotConfigured(u8),
    Adc2InUse,
    MissingCalibrationData,
    UnsupportedAttenuation(Attenuation),
}

Available on crate feature unstable only.

Errors that can occur while using the ADC.

Stability

This API is marked as unstable and is only available when the unstable crate feature is enabled. This comes with no stability guarantees, and could be changed or removed at any time.

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.

ChannelNotConfigured(u8)

The ADC channel was not configured for reading.

Adc2InUse

ADC2 cannot be used together with the radio.

Only constructed on ESP32, where ADC2 shares hardware with Wi-Fi and Bluetooth.

MissingCalibrationData

The chip carries no eFuse calibration data for the requested scheme.

Constructed when line/curve fitting is requested but the calibration eFuses are unburnt, or when the stored reference point is zero and therefore unusable.

UnsupportedAttenuation(Attenuation)

The attenuation has no calibration reference point on this chip.

Constructed when the requested attenuation is not characterized for calibration (e.g. ESP32-C2 line fitting at 2.5 dB/6 dB, or a missing curve-fitting coefficient set).

Trait Implementations

impl Clone for Error

fn clone(&self) -> Error

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for Error

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, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Eq for Error

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 Hash for Error

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given [Hasher].

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given [Hasher].

impl PartialEq for Error

fn eq(&self, other: &Error) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Error