CAN frame structure

can_frame.go

// Frame represents a simplified CAN frame
type Frame struct {
	// CAN identifier (11-bit standard ID)
	// Determines priority during arbitration: lower ID = higher priority
	Id uint32

	// Data Length Code (DLC)
	// Indicates how many bytes of data are in the payload (0–8 for classic CAN, up to 64 for CAN FD)
	DLC uint8

	// Payload data
	// Holds the actual message sent between nodes
	// ProtocolMaxDataBytes defines the max supported bytes (e.g., 8 for classic CAN)
	Data [ProtocolMaxDataBytes]byte

	// Fields below exist in this demo but are not stored within the frame struct:
	// SOF (Start of Frame) – marks the beginning of a frame
	// IFS – inter-frame spacing, ensures minimum gap between frames
	// EOF – end-of-frame marker

	// Fields exist in real CAN but are omitted in this demo:
	// RTR (Remote Transmission Request) – distinguishes data frames from remote frames
	// IDE (Identifier Extension) – indicates standard (11-bit) or extended (29-bit) ID
	// r0, r1 – reserved bits for future use / protocol compliance
	// CRC – cyclic redundancy check for error detection
	// ACK – acknowledgment bit, set by receivers if frame is valid
	
}