Method and system for realizing refreshing and writing of ECU (Electronic Control Unit) program

Abstract

The invention relates to a method for realizing refreshing and writing of an ECU (Electronic Control Unit) program. The method is as follows: an upper computer erases original data in the ECU according to a user-defined refreshing and writing distribution protocol; the upper computer is used for refreshing and writing data messages to the ECU according to the user-defined refreshing and writing distribution protocol; the ECU resolves the received data messages and runs the program according to the resolved data messages. In addition, the invention also comprises a system for realizing refreshing and writing of an ECU program. The system comprises the upper computer, wherein the upper computer comprises an encryption module and a data refreshing and writing module. The method and system for realizing refreshing and writing of the ECU program can be used for reducing an ECU program refreshing and writing cost, supporting various CAN (Controller Area Network) transceiving hardware equipment, supporting refreshing and writing of various program format files in a refreshing and writing software engineering, improving the software data safety and realizing ECU online refreshing and writing functions, and has a wider application range.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to the technical field of flashing of automobile software, in particular to a method and a system for realizing flashing of electronic control unit programs. Background technique [0002] Today, with increasingly strict requirements on automobile performance, safety, energy saving and environmental protection, the speed of automobile control strategies and methods is getting faster and faster. Control Unit, electronic control unit) program to configure, update and upgrade. [0003] Some existing methods of flashing programs for automotive ECUs based on K-lines, serial ports, etc. not only need to reserve a flashing interface for the ECU, which wastes hardware resources, but also greatly restricts the location of the controller. If the estimate of the interface or operating space is insufficient, the control module can only be removed from the vehicle for flashing, and then rein...

AI Technical Summary

Problems solved by technology

[0003] Some existing methods of flashing programs for automotive ECUs based on K-lines, serial ports, etc. not only need to reserve a flashing interface for the ECU, which wastes hardware resources, but also greatly restricts the location of the controller.

If the estimate of the interface or operating space is insufficient, the control module can only be removed from the vehicle for flashing, and then reinstalled after completion, which greatly increases the difficulty and cost of flashing the program

[0004] After extensive searching, most of the existing flashing methods based on the CAN bus are bound to specific hardware tools or can only flash programs in a specific format. The safety certification or data verification method is single, the flashing speed is slow and cannot Support the main issues such as online brushing of the whole vehicle

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