matlab code for canunpack scanunpack sfucntion in matlab

To create a MATLAB code for the "canunpack" and "scanunpack" functions, you would need to provide more information about what these functions do and what inputs/outputs they have. Since "scanunpack" seems to be a typo, I assume you meant "scanpack" function.

If you are referring to the CAN (Controller Area Network) communication protocol and its related functions in MATLAB, here is a general outline of how to use these functions:

1. Start by setting up the CAN channel using the canChannel object. This object is created with the canChannel function. Specify the necessary parameters such as the device name, baud rate, and channel number.

main.m
deviceName = 'CANDevice';
baudRate = 500000;
channelNumber = 1;

canObj = canChannel(deviceName, baudRate, channelNumber);
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2. Define the message structure. A CAN message is composed of an identifier (ID) and data payload. The canMessage object is used to represent the CAN message.

main.m
messageID = hex2dec('123');
messageData = [1 2 3 4]; % Example data payload

canMsg = canMessage(messageID, messageData);
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3. Use the canpack function to pack the data payload into a byte array for transmission. Specify the message format (extended or standard) as an argument.

main.m
msgFormat = 'standard';

packedData = canpack(canMsg, msgFormat);
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4. Transmit the packed data using the transmit function of the canChannel object.

main.m
canObj.transmit(packedData);
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5. On the receiving side, use the receive function to receive the CAN data and unpack it.

main.m
receivedData = canObj.receive();
unpackedData = scanpack(receivedData, msgFormat);
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Note that the above code is a general outline, and you may need to adapt it to your specific requirements. Ensure that you have the necessary hardware drivers and MATLAB support packages installed for CAN communication.

Also, if "scanunpack" is a specific function you are referring to, please provide more information about its functionality, inputs, and outputs so that I can guide you accordingly.