stCM_ISO157652_TxMessageStructure

stCM_ISO157652_TxMessage Structure

This structure is used by icsneoISO15765_TransmitMessage

C/C++ Declare

typedef struct __declspec(align(2)) _stCM_ISO157652_TxMessage
{
    unsigned short vs_netid;
    unsigned char padding;
    unsigned char tx_index;
    unsigned int id;
    unsigned int fc_id;
    unsigned int fc_id_mask;
    unsigned char stMin;
    unsigned char blockSize;
    unsigned char flowControlExtendedAddress;
    unsigned char extendedAddress;

    unsigned short fs_timeout;
    unsigned short fs_wait;

    unsigned char data[4*1024];
    unsigned int num_bytes;
    union
    {
        struct
        {
            unsigned id_29_bit_enable:1;
            unsigned fc_id_29_bit_enable:1;
            unsigned ext_address_enable:1;
            unsigned fc_ext_address_enable:1;
            unsigned overrideSTmin:1;
            unsigned overrideBlockSize:1;
            unsigned paddingEnable:1;
            unsigned iscanFD : 1;
            unsigned isBRSEnabled : 1;        };
    unsigned short flags;
};

Visual Basic .NET Declare

<StructLayout(LayoutKind.Sequential, Pack:=2)> Public Structure stCM_ISO157652_TxMessage
    Dim vs_netid As UInt16
    Dim padding As Byte
    Dim tx_index As Byte
    Dim id As UInt32
    Dim fc_id As UInt32
    Dim fc_id_mask As UInt32
    Dim stMin As Byte
    Dim blockSize As Byte
    Dim flowControlExtendedAddress As Byte
    Dim extendedAddress As Byte
    '//flow control timeouts
    Dim fs_timeout As UInt16
    Dim fs_wait As UInt16
    '//******************************************************************************************************************
    <VBFixedArray(4095), System.Runtime.InteropServices.MarshalAs(System.Runtime.InteropServices.UnmanagedType.ByValArray, SizeConst:=4095)> Public data() As Byte
    '// call: stCM_ISO157652_TxMessage.data = New Byte(4096) {}
    '//******************************************************************************************************************
    Dim num_bytes As UInt32
    Dim flags As UInt16
End Structure

Enum stCM_ISO157652_TxMessage_Flags
    id_29_bit_enable = 1
    fc_id_29_bit_enable = 2
    ext_address_enable = 4
    fc_ext_address_enable = 8
    overrideSTmin = 16
    overrideBlockSize = 32
    paddingEnable = 64
    iscanFD = 128
    isBRSEnabled= 256
End Enum

C# Declare

[StructLayout(LayoutKind.Sequential, Pack = 2)]
public struct {
    public UInt16 vs_netid;
    public byte padding;
    public bytete tx_index;
    public id;
    public UInt32 fc_id;
    public UInt3232
    public bytete
    public byte blockSize;
    public bytete
    public bytete
    public UInt16 fs_timeout;
    public UInt16 fs_wait;
    //******************************************************************************************************************
    [MarshalAs(>(UnmanagedType.ByValArray,SizeConst=4095)] public byte[] data;
    // call: stCM_ISO157652_TxMessage.data = new byte(4096)
    //******************************************************************************************************************
    public num_bytes;
    public UInt16 flags;
}

public enum stCM_ISO157652_TxMessage_Flags : int
{
    id_29_bit_enable = 1,
    fc_id_29_bit_enable = 2,
    ext_address_enable = 4,
    fc_ext_address_enable = 8,
    overrideSTmin = 16,
    overrideBlockSize = 32,
    paddingEnable = 64,
    iscanFD = 128,
    isBRSEnabled= 256,
}

Remarks

Structure Elements

Item

Description

unsigned short vs_netID

Network ID of the message

unsigned char padding

Character used for padding to fill the rest of the last frame.

unsigned char tx_index

Index of the transmit message to configure for instances that have more than one message going out at a time.

unsigned int id

ArbID of the message being sent

unsigned int fc_id

ArbID of the flow control frame to look for

unsigned int fc_id_mask

Bitwise mask for the flow control arbitration ID. (1 pass 0 block)

unsigned char stMin

Separation time to wait between consecutive frames

unsigned char blockSize

Number of consecutive frames before expecting another flow control

unsigned char flowControlExtendedAddress

Byte used expected for flow control extended address when using extended addressing (different than 29bit IDs)

unsigned char extendedAddress

Byte used for extended address in transmitted message

unsigned short fs_timeout

Timeout to wait for flow control frame

unsigned short fs_wait

Timeout to wait for 7F 78 (Negative response of request received response pending

unsigned char [4096]

Data array of 4096 that contains the data to send

unsigned int num_bytes

Number of data bytes used in the data array

unsigned short flags

Bit field containing flags for transaction

id_29_bit_enable	Enable 29 Bit address	1
fc_id_29_bit_enable	Flow control 29 bit address	2
ext_address_enable	Use extended address	4
fc_extended_address_enable	Flow Control use extended address	8
overrideSTmin	Ignore ST Min in flow control	16
overrideBlockSize	Ignore block size in flow control	32
paddingenable	Pad outgoing frames	64
iscanFD	Enables CAN FD	128
isBRSEnabled	Enables CAN FD Baud Rate Switch	256

Last Updated : Monday, December 27, 2021