km003c-lib 0.4.0

Protocol parser and async USB library for the ChargerLAB POWER-Z KM003C
Documentation 
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use std::array::TryFromSliceError;
use std::io;
use thiserror::Error;

/// The primary error type for the `km003c-rs` library.
#[derive(Error, Debug)]
pub enum KMError {
    #[error("USB device not found. Is the POWER-Z KM003C connected?")]
    DeviceNotFound,

    #[error("USB error: {0}")]
    Usb(#[from] nusb::Error),

    #[error("I/O error: {0}")]
    Io(#[from] io::Error),

    #[error("Timeout during USB operation: {0}")]
    Timeout(#[from] tokio::time::error::Elapsed),

    #[error("Protocol error: {0}")]
    Protocol(String),

    #[error("Invalid packet: {0}")]
    InvalidPacket(String),

    #[error("Insufficient data: expected at least {expected} bytes, got {actual}")]
    InsufficientData { expected: usize, actual: usize },

    #[error("Parse error at offset {offset}: {message}")]
    ParseError { offset: usize, message: String },

    #[error("Attribute mismatch: expected {expected:?}, got {actual:?}")]
    AttributeMismatch { expected: Vec<u16>, actual: Vec<u16> },

    #[error("Serialization is not supported for {packet}")]
    UnsupportedSerialization { packet: &'static str },
}

impl From<TryFromSliceError> for KMError {
    fn from(_: TryFromSliceError) -> Self {
        KMError::InvalidPacket("Failed to convert slice to array".to_string())
    }
}