MATLAB [Send CAN message]

배경

매트랩을 활용하여 PEAK System 사의 PCAN-USB 제품을 제어하기 위해 매뉴얼 정리

 

Transmit Messages

type generateMsgs

The example function generateMsgs creates CAN messages using canMessage and transmits them using transmit at various periodic rates. It generates traffic on the CAN bus for demonstration purposes.

 

function generateMsgs()
% generateMsgs Creates and transmits CAN messages for demo purposes.
%
%   generateMsgs periodically transmits multiple CAN messages at various
%   periodic rates with changing message data.
%

% Copyright 2008-2016 The MathWorks, Inc.

    % Create the messages to send using the canMessage function. The 
    % identifier, an indication of standard or extended type, and the data
    % length is given for each message.
    msgTx100 = canMessage(100, false, 0);
    msgTx200 = canMessage(200, false, 2);
    msgTx400 = canMessage(400, false, 4);
    msgTx600 = canMessage(600, false, 6);
    msgTx800 = canMessage(800, false, 8); 

    % Create a CAN channel on which to transmit.
    txCh = canChannel('MathWorks', 'Virtual 1', 1);

    % Register each message on the channel at a specified periodic rate.
    transmitPeriodic(txCh, msgTx100, 'On', 0.500);
    transmitPeriodic(txCh, msgTx200, 'On', 0.250);
    transmitPeriodic(txCh, msgTx400, 'On', 0.125);
    transmitPeriodic(txCh, msgTx600, 'On', 0.050);
    transmitPeriodic(txCh, msgTx800, 'On', 0.025);
    
    % Start the CAN channel.
    start(txCh);
    
    % Run for several seconds incrementing the message data regularly.
    for ii = 1:50
        % Increment the message data bytes.
        msgTx200.Data = msgTx200.Data + 1;
        msgTx400.Data = msgTx400.Data + 1;
        msgTx600.Data = msgTx600.Data + 1;
        msgTx800.Data = msgTx800.Data + 1;
        
        % Wait for a time period.
        pause(0.100);
    end

    % Stop the CAN channel.
    stop(txCh);
end

 

canChannel

 

Sysntax

message1 = canMessage(id,extended,datalength)
message2 = canMessage(candb,messagename)

//Create a CAN Message
message3 = canMessage(2500,true,4)

//Create a Message with Database Definitions
candb = canDatabase("C:\myVNTData\VehicleInfo.dbc")
message4 = canMessage(candb,"WheelSpeeds")

 

---

transmit

 

Sysntax

//Transmit a CAN Message
message = canMessage (250,false,8);
message.Data = ([45 213 53 1 3 213 123 43]);
canch = canChannel('MathWorks','Virtual 1',1);
start(canch)
transmit(canch,message)



//Transmit an Array of Messages
transmit(canch,[message0,message1,message2])


//Transmit Messages on a Remote Frame
message = canMessage(250,false,8);
message.Data = ([45 213 53 1 3 213 123 43]);
message.Remote = true;
canch = canChannel('MathWorks','Virtual 1',1);
start(canch)
transmit(canch,message)