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Method for on-line burning of flash of electric controller of automobile

An automotive electronics and controller technology, applied in electrical program control, comprehensive factory control, program control devices, etc., to achieve the effect of reducing production cost, volume, and design difficulty

Inactive Publication Date: 2010-06-09
LIANCHUANG AUTOMOBILE ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The CCP protocol has been used in some ECU calibration, but there is no method to use this protocol to download ECU online

Method used

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  • Method for on-line burning of flash of electric controller of automobile
  • Method for on-line burning of flash of electric controller of automobile
  • Method for on-line burning of flash of electric controller of automobile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] see figure 1 , the online programming method of the Flash of automobile electronic controller of the present invention comprises the steps:

[0023] In the first step, the computer is connected to the automotive electronic controller through the CAN bus, and the computer is used as the main device to establish a logical connection with the automotive electronic controller through the CCP protocol.

[0024] see figure 2 , the computer is connected as a master device and an automotive electronic controller (as a slave device). The computer has a CAN bus interface card on the hardware, the car ECU has a CAN bus driver on the hardware, and the computer is connected to the car ECU through the CAN bus. The CAN bus interface card, for example, can adopt the CANape card of Vector Company. The computer also has CCP protocol master device driver software, including CCP protocol driver and CAN bus interface driver. Automotive ECU also has CCP protocol slave device driver soft...

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PUM

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Abstract

The invention discloses a method for on-line burning of the flash of an electric controller of an automobile. The method comprises the following steps that: 1, a computer is connected with the electric controller of the automobile by a CAN bus, and the computer serving as the main equipment establishes a logic connection with the electric controller of the automobile according to the CCP protocol; 2, the computer transfers a FlashKernel file to an RAM of the electric controller of the automobile, and runs the FlashKernel file in the RAM; and 3, the computer serving as the main equipment establishes a logic connection with a kernel program of the flash according to the CCP protocol, and the computer calls the service program of the flash to erase, modify and cover the flash of the electric controller of the automobile. The method has the advantages of lowering the design difficulty of the ECU, lowering production cost, and simultaneously not occupying the space of the flash.

Description

technical field [0001] The invention relates to an online programming and software downloading method of an automobile electronic controller. Background technique [0002] The car's ECU (ELECTRONIC CONTROL UNIT, electronic controller) plays a key role in the energy management of the vehicle and the coordinated operation of various components. When monitoring the working status of the car, it is often necessary to re-calibrate, diagnose and update the control software in the ECU. The traditional method of debugging and updating the software in the ECU, or with the help of JTAG (Joint Test Action Group, joint test action group) interface or BDM (Background Debug Mode, background debugging mode) interface for online programming, or disassemble the ECU to burn Write it and install it back. Obviously, adding an extra interface on the ECU will increase the manufacturing cost of the ECU, and disassembly and reinstallation will greatly increase the complexity of debugging and prog...

Claims

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Application Information

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IPC IPC(8): G05B19/418G06F9/445
CPCY02P90/02
Inventor 陈意瑶单津晖罗来军
Owner LIANCHUANG AUTOMOBILE ELECTRONICS
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