otto_packet Union Reference

OBD2 Packet format. More...

#include <packet.h>

List of all members.

Public Attributes
struct {
unsigned char   data [OTTO_PACKET_LENGTH_MAX]
	Packet data.
int   length
	Packet length.
unsigned char   nb
	Normalization bit for in frame response (only valid with VPW).
}	raw
struct {
unsigned char   id
	Message ID.
unsigned char   data [OTTO_PACKET_LENGTH_MAX-1]
	Data field.
}	single
	Single byte header packet.
union {
struct {
enum	{ OTTO_PKTHDRCS_THREEBYTE = 0, OTTO_PKTHDRCS_ONEBYTE = 1 }
	Header type. More...
unsigned char   id_lo:4
	Message ID low 4 bits.
enum otto_packet:: { ... } ::@31::@34   h
	Header type.
unsigned char   id_hi:3
	Message ID high 3 bits.
}   hdr
	Single byte form of consolidated header.
struct {
otto_funcadr_data   data
}   func
struct {
otto_phyadr_data   data
}   phy
}	consol1
	Single byte form of consolidated header message.
union {
struct {
enum	{ OTTO_PKTHDR_FUNCTIONAL = 0, OTTO_PKTHDR_PHYSICAL = 1 }
	Addressing mode. More...
enum	{ OTTO_PKTHDR_IFRREQUIRED = 0, OTTO_PKTHDR_IFRDISALLOWED = 1 }
	In-frame response (IFR). More...
enum	{ OTTO_PKTHDR_THREEBYTE = 0, OTTO_PKTHDR_ONEBYTE = 1 }
	Header type. More...
unsigned char   z:2
	Message type see HS3000, p. 254, table 6.
enum otto_packet:: { ... } ::@35::@38   y
	Addressing mode.
enum otto_packet:: { ... } ::@35::@39   k
	In-frame response (IFR).
enum otto_packet:: { ... } ::@35::@40   h
	Header type.
unsigned char   p:3
	Priority Zero is highest priority, 7 is lowest.
}   first
	First byte.
struct {
struct {
enum	{ OTTO_FUNCADR_TGTADR_COMMAND = 0, OTTO_FUNCADR_TGTADR_STATUS = 1 }
	Functional target address type. More...
enum otto_packet:: { ... } ::@36::@41::@42   w
	Functional target address type.
unsigned char   id:7
	Primary ID.
}   target
	Target address.
unsigned char   source
	Source address.
otto_funcadr_data   data
	Data formats.
}   func
	Functional addressing.
struct {
unsigned char   target
	Target address.
unsigned char   source
	Source address.
otto_phyadr_data   data
	Data.
}   phy
	Physical addressing.
}	consol3
	Three byte form of consolidated header message.

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Detailed Description

OBD2 Packet format.

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Member Data Documentation

union { ... } otto_packet::consol1

Single byte form of consolidated header message.

union { ... } otto_packet::consol3

Three byte form of consolidated header message.

union otto_phyadr_data otto_packet::data

Data.

union otto_funcadr_data otto_packet::data

Data formats.

union otto_phyadr_data otto_packet::data

union otto_funcadr_data otto_packet::data

unsigned char otto_packet::data[OTTO_PACKET_LENGTH_MAX-1]

Data field.

struct { ... } otto_packet::first

First byte.

struct { ... } otto_packet::func

Functional addressing.

struct { ... } otto_packet::func

enum { ... } ::@40 otto_packet::h

Header type.

enum { ... } ::@34 otto_packet::h

Header type.

struct { ... } otto_packet::hdr

Single byte form of consolidated header.

unsigned char otto_packet::id

Primary ID.

unsigned char otto_packet::id_hi

Message ID high 3 bits.

unsigned char otto_packet::id_lo

Message ID low 4 bits.

enum { ... } ::@39 otto_packet::k

In-frame response (IFR).

int otto_packet::length

Packet length.

unsigned char otto_packet::nb

Normalization bit for in frame response (only valid with VPW).

unsigned char otto_packet::p

Priority Zero is highest priority, 7 is lowest.

struct { ... } otto_packet::phy

Physical addressing.

struct { ... } otto_packet::phy

struct { ... } otto_packet::raw

struct { ... } otto_packet::single

Single byte header packet.

unsigned char otto_packet::source

Source address.

unsigned char otto_packet::target

Target address.

struct { ... } ::@41 otto_packet::target

Target address.

enum { ... } otto_packet::w

Functional target address type.

enum { ... } ::@38 otto_packet::y

Addressing mode.

unsigned char otto_packet::z

Message type see HS3000, p. 254, table 6.

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The documentation for this union was generated from the following file:

• include/otto/packet.h

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