Hello みほ,
Yes, you can communicate with and acquire data from an ECU using the XCP (Universal Measurement and Calibration Protocol) without CANape by using MATLAB's Vehicle Network Toolbox. The Vehicle Network Toolbox supports XCP on CAN and XCP on Ethernet, allowing you to configure, control, and acquire data from ECUs directly within MATLAB.
Step-by-Step Guide
Step 1: Set Up the Environment
Ensure you have the Vehicle Network Toolbox installed. You can check this by running:
ver -support
Look for "Vehicle Network Toolbox" in the list of installed toolboxes.
Step 2: Create an A2L File
You need an A2L file that describes the ECU's memory layout and the available measurement and calibration parameters. This file is typically provided by the ECU manufacturer.
Step 3: Establish an XCP Connection
Use the `xcpChannel` function to create an XCP channel. Here's an example for XCP on CAN:
% Load the A2L file
a2lFile = 'path_to_your_file.a2l';
% Create an XCP channel for CAN
xcpCh = xcpChannel('CAN', 'Vector', 'CANCaseXL 1', 1, a2lFile);
% Connect to the ECU
connect(xcpCh);
For XCP on Ethernet, you would use:
% Create an XCP channel for Ethernet
xcpCh = xcpChannel('TCP/IP', '192.168.1.1', 5555, a2lFile);
% Connect to the ECU
connect(xcpCh);
Step 4: Acquire Data
Once connected, you can acquire data from the ECU. You can read specific measurements using the `readMeasurement` function:
% Read a specific measurement
measurementName = 'EngineSpeed';
engineSpeed = readMeasurement(xcpCh, measurementName);
disp(['Engine Speed: ', num2str(engineSpeed)]);
To acquire data continuously, you can use DAQ lists. Here's an example of how to set up a DAQ list and start acquiring data:
% Create a DAQ list
daqList = createDAQList(xcpCh, 'DAQList1');
% Add measurements to the DAQ list
addMeasurement(daqList, 'EngineSpeed');
addMeasurement(daqList, 'VehicleSpeed');
% Start acquiring data
startDAQ(xcpCh);
% Read data from the DAQ list
pause(1); % Wait for some data to be collected
data = readDAQ(xcpCh, 'DAQList1');
% Display the data
disp(data);
% Stop acquiring data
stopDAQ(xcpCh);
Step 5: Disconnect
After you have finished acquiring data, disconnect from the ECU:
disconnect(xcpCh);
Complete Example
Here’s a complete example that puts it all together:
% Load the A2L file
a2lFile = 'path_to_your_file.a2l';
% Create an XCP channel for CAN
xcpCh = xcpChannel('CAN', 'Vector', 'CANCaseXL 1', 1, a2lFile);
% Connect to the ECU
connect(xcpCh);
% Read a specific measurement
measurementName = 'EngineSpeed';
engineSpeed = readMeasurement(xcpCh, measurementName);
disp(['Engine Speed: ', num2str(engineSpeed)]);
% Create a DAQ list
daqList = createDAQList(xcpCh, 'DAQList1');
% Add measurements to the DAQ list
addMeasurement(daqList, 'EngineSpeed');
addMeasurement(daqList, 'VehicleSpeed');
% Start acquiring data
startDAQ(xcpCh);
% Read data from the DAQ list
pause(1); % Wait for some data to be collected
data = readDAQ(xcpCh, 'DAQList1');
% Display the data
disp(data);
% Stop acquiring data
stopDAQ(xcpCh);
% Disconnect from the ECU
disconnect(xcpCh);
Above information is just for reference to understand how you can approach the task.
Thank you.
