Hello Luc
As I can interpret, you want to display all the traffic going through on CAN channel on TextArea in your case.
As far as I know, since the MATLAB CAN interface does not automatically log transmitted messages in the same way it does for received messages, you will need to implement a mechanism to log them manually.
Here is one approach to achieve this:
- Before sending messages, initialize a structure or table to store information about each transmitted message. This structure should be accessible in the scope where you're sending messages and where you want to display them.
% Example structure for logging messages
app.transmittedMessages = struct('ID', {}, 'Data', {}, 'Timestamp', {});
% Based on the message strucure, modify the above struct according to your needs
2. Every time you transmit a message, add its details to your logging structure or table. You can capture the timestamp at this point as well.
function transmitCANMessage(app, message)
% Transmit the message
transmit(app.canChannel, message);
% Log the message details which are actually the message properties
newEntry.ID = message.ID;
newEntry.Data = message.Data;
newEntry.Timestamp = datetime('now');
app.transmittedMessages(end+1) = newEntry;
% Update your UI here or call another function to do so
updateUITransmittedMessages(app);
end
3. After logging a transmitted message, update the TextArea to display the latest message or refresh the list of messages.
function updateUITransmittedMessages(app)
% Convert the structure of messages to a string representation
% Below is a simple example, you might need to format it more nicely
messagesString = '';
for i = 1:length(app.transmittedMessages)
msg = app.transmittedMessages(i);
messagesString = sprintf('ID: %d, Data: %s, Timestamp: %s\n', ...
msg.ID, mat2str(msg.Data), msg.Timestamp);
messagesStr = [messagesStr, messagesString];
end
% Update the TextArea with the messages string
app.TextArea.Value = messagesStr;
end
I think you should be able to see the message content on the TextArea now!
