Struct UdsFirstFrame

pub struct UdsFirstFrame {
    pub size: u16,
    pub sid: u8,
    pub did: Option<u16>,
    pub payload: Vec<u8>,
}

Represents a UDS First Frame. This frame is sent when the payload is too large for a single frame. It contains the total size of the payload and the initial data.

Fields

size: u16

Total size of the payload (only 12 bits are used).

sid: u8

Service Identifier (SID) for the request or response.

did: Option<u16>

Optional Diagnostic Identifier (DID), used in certain services.

payload: Vec<u8>

The first portion of the payload.

Implementations

impl UdsFirstFrame

pub fn new( sid: u8, size: u16, did: Option<u16>, payload: Vec<u8>, ) -> Result<Self, FrameError>

Creates a new UDS First Frame for multi-frame communication.

Parameters:

• sid: Service Identifier.
• size: Total payload size.
• did: Optional Diagnostic Identifier.
• payload: Initial chunk of the payload (max 6 bytes).

Returns:

• Ok(UdsFirstFrame): If the payload size is valid.
• Err(FrameError): If the payload exceeds 6 bytes.

pub fn to_vec(&self) -> Result<Vec<u8>, FrameError>

Converts the first frame into a CAN frame byte vector.

Returns:

• Ok(Vec<u8>): The CAN frame representation.
• Err(FrameError): If the payload size exceeds 6 bytes.

Trait Implementations

impl Clone for UdsFirstFrame

fn clone(&self) -> UdsFirstFrame

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for UdsFirstFrame

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

Formats the value using the given formatter.

impl PartialEq for UdsFirstFrame

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for UdsFirstFrame