XCP Protocol Implementation in XMC4800 Controller

Basics of XCP Protocol

1. Introduction to XCP

The Universal Measurement and Calibration Protocol (XCP) is a standardized communication protocol used for real-time data acquisition, calibration, and flashing of electronic control units (ECUs). It was developed by ASAM (Association for Standardization of Automation and Measuring Systems) and is widely used in automotive and embedded systems for testing and development purposes.

2. Features and Benefits

• Real-time Data Acquisition: XCP allows high-speed measurement and calibration of parameters within an ECU without significantly impacting system performance.
• Transport Layer Independence: It can operate over various transport layers, including CAN, Ethernet, SPI, and USB.
• Scalability and Flexibility: XCP supports a wide range of applications, from simple calibration tasks to complex testing environments.
• Event-Triggered Data Logging: The protocol can be configured to collect and transmit data based on specific triggers or conditions.

3. Communication Mechanism

XCP operates on a master-slave architecture, where:

• The Master (typically a PC-based tool) sends commands and requests data.
• The Slave (ECU or embedded system) responds with the requested information.

The protocol uses a packet-based communication system, including commands for read/write operations, calibration, flashing, and event-based measurement. Communication is managed through a standardized Application Programming Interface (API), ensuring compatibility across different vendors.

4. Applications in Automotive and Embedded Systems

• ECU Calibration: Used extensively in the automotive industry for tuning engine control parameters in real time.
• Data Logging and Debugging: Enables engineers to analyze system behavior under different conditions.
• Software Flashing: Supports firmware updates and reprogramming of ECUs.
• HIL and SIL Testing: Plays a crucial role in hardware-in-the-loop (HIL) and software-in-the-loop (SIL) simulations for validating system performance before deployment.

XCP continues to be a vital tool in modern automotive development, ensuring efficient testing, calibration, and data acquisition in embedded systems.

XCP Over CAN Protocol

Here is a structured list of the software and hardware used for XCP calibration via CAN communication:

Software Used:

• TS Master – Used for calibration of parameters and sending XCP commands over CAN.
• DAVE IDE – Used for processing commands received from TS Master and executing necessary code on the XMC4800.

Hardware Used:

• XMC4800 IoT Connectivity Kit – Used for replying with CAN frames based on received XCP commands.
• Kvaser CAN Hardware – Used for sending and receiving CAN frames between TS Master and the XMC4800 controller.

Implementation Steps

Step 1: Download and Install DAVE IDE

DAVE IDE Download Link

Select the right version for your system and install it.

Step 2: Create a New Project in DAVE IDE

• Open DAVE IDE → Go to File → Select DAVE Project

Step 3: Name and Select Project Type

• Name the project → Select DAVE CE Project → Click Next

Step 4: Select Your Controller

• Choose XMC4800 IoT Connectivity Kit → Click Finish

Step 5: Add CAN_NODE to the Project

• Click on App Dependency → Search for CAN → Add CAN_NODE

Step 6: Configure CAN_NODE

• Click on CAN_NODE_0 App Dependency → Input the Number of Message Objects (e.g., 1) → Set Baud Rate (e.g., 500 Kbps)

Step 7: Configure Pin Allocator

• Click on Manual Pin Allocator → Select Pins → Save

Step 8: Select the Pins and Save it

• Click on the Generate Code icon

Step 9: Now Click on the Generate code icon

Step 10: Download XCP Stack

GitHub Link for XCP Stack

• Search for XCP inside the repository
• Use the Include Header Files and Source Codes from Core -> Communication -> XCP

Step – 11

Installation of TS Master tool for Measurement

Software Downloading Repo Link from Official TS Master Repo
-> https://github.com/TOSUN-Shanghai/TSMaster.git

• The Above is the two software Extensions and install based on your System Configurations.
• Install the Software.

Step – 12

After Installing TS Master tool then Follow the Below Steps

• There will be Two Icons added to your System after the installation of the TS Master tool.
• Select the Appropriate Icon and Folloe the below Steps.

Step – 13

1. Click on the Create New Project

2. Click on the Calibration

3. Now select on the XCP Calibration

4. Select the Directory you need to store the Projects

Step – 14

The Below steps will be for the TS Master toon Configurations

The Interface will be Looks Like this

1. Click the Channel Selection

2. After Going to the Channel Selection click on the Vendor Selection

3. Now select your Appropriate Hardware Vendor (Mine is Kvaser) and click ok

4. Select your Hardware connected Channel Port and click ok

5. Again click on the Hardware and go to the Network Hardware

6. On the Network Hardware page select the CAN 1 and set the Baud rate (The Slave Controllers baud rate and the Master TS Master’s Baud rate should be same).

7. Click on the Measurement Setup Icon then the page will be Look like the Below and then select Calibration.

8. After selecting the Calibration page go to the ECU and then Specify the A2L File for your Project. The A2L variable’s and the ECU variables Address should be same.

9. And then in the Database select the variables that needs to be measured and then finally Select the Option Add to Numeric and Create new Numeric window.

10. The Display will be opened or you can open this page using the Measurement setup Icon.

11. Then, in the ECU, go to the Protocol section. On the Protocol page, set the Transport Layer Master ID. You can assign any value (mine is 0x2BC = 700), but ensure that the same value is used in the ECU’s receiving condition. The Receiving ID from the Slave ECU is 2 (in decimal)

12. On the same Protocol page go to the Optional Commands Section. Then select the DAQ related and MTA Commands and also the commands based on your commands select the Commands.

13.On the ECU, go to the Measurement List. There, you will find the list of measurement variables you have selected. Then, select the refresh rate required to fetch the value changes in the variables from the ECU.

14. Now go to the Trace icon on the Top and Ensure that you have selected your right CAN version

15. Start the Measurement by Clicking the Icon

16. Then check the system message console

• The Application Connected message will be Shown if it is Rightly connected

17.Connect to the ECU using the Connect icon

18. Then Click on the Start Measurement

19. Then The measurement of Variables will be started

Commands and Responses

• The Above command FF Represents the Connection Request command from the TS Master to the Slave Controller.

• Like Above If the Slave gives back the FF command as response then it indicates that the Ts Master tool is connected with the slave controller.

• The FE Command represents the Disconnect command sent from the TS Master, meaning it stops communicating with the Slave Controller.

Below are the Commands for XCP Protocol

Standard Commands

Command	PID
CONNECT	0xFF
DISCONNECT	0xFE
GET_STATUS	0xFD
SYNCH	0xFC
GET_COMM_MODE_INFO	0xFB
GET_ID	0xFA
SET_REQUEST	0xF9
GET_SEED	0xF8
UNLOCK	0xF7
SET_MTA	0xF6
UPLOAD	0xF5
SHORT_UPLOAD	0xF4
BUILD_CHECKSUM	0xF3
TRANSPORT_LAYER_CMD	0xF2
USER_CMD	0xF1

Calibration Commands

Command	PID
DOWNLOAD	0xF0
DOWNLOAD_NEXT	0xEF
DOWNLOAD_MAX	0xEE
SHORT_DOWNLOAD	0xED
MODIFY_BITS	0xEC

Standard Calibration Commands

Command	PID
SET_CAL_PAGE	0xEB
GET_CAL_PAGE	0xEA
GET_PAG_PROCESSOR_INFO	0xE9
GET_SEGMENT_INFO	0xE8
GET_PAGE_INFO	0xE7
SET_SEGMENT_MODE	0xE6
GET_SEGMENT_MODE	0xE5
COPY_CAL_PAGE	0xE4

Periodic Data Exchange – Basics

Command	PID
SET_DAQ_PTR	0xE2
WRITE_DAQ	0xE1
SET_DAQ_LIST_MODE	0xE0
START_STOP_DAQ_LIST	0xDE
START_STOP_SYNCH	0xDD
WRITE_DAQ_MULTIPLE	0xC7
READ_DAQ	0xDB
GET_DAQ_CLOCK	0xDC
GET_DAQ_PROCESSOR_INFO	0xDA
GET_DAQ_RESOLUTION_INFO	0xD9
GET_DAQ_LIST_INFO	0xD8
GET_DAQ_EVENT_INFO	0xD7

Periodic Data Exchange – Static Configuration

Command	PID
CLEAR_DAQ_LIST	0xE3
GET_DAQ_LIST_INFO	0xD8

Periodic Data Exchange – Dynamic Configuration

Command	PID
FREE_DAQ	0xD6
ALLOC_DAQ	0xD5
ALLOC_ODT	0xD4
ALLOC_ODT_ENTRY	0xD3

Flash Programming Commands

Command	PID
PROGRAM_START	0xD2
PROGRAM_CLEAR	0xD1
PROGRAM	0xD0
PROGRAM_RESET	0xCF
GET_PGM_PROCESSOR_INFO	0xCE
GET_SECTOR_INFO	0xCD
PROGRAM_PREPARE	0xCC
PROGRAM_FORMAT	0xCB
PROGRAM_NEXT	0xCA
PROGRAM_MAX	0xC9
PROGRAM_VERIFY	0xC8