ECU module refreshing verification method based on LIN line

Abstract

The invention provides an ECU module refreshing verification method based on an LIN line. The ECU module refreshing verification method comprises the steps that address filling is conducted on a plurality of initial program modules to obtain refreshing program modules with continuous addresses; obtaining a verification filling value of the data of the refreshing program module; verifying the refreshing program module and the verification filling value to generate a refreshing file; transmitting the refreshing file to an ECU (Electronic Control Unit) end through an LIN (Local Interconnect Network) line; and checking the refresh file at the ECU end. According to the method and the device, the initial program module is subjected to address filling to obtain the refresh program module with continuous addresses, and the refresh file can be transmitted to the ECU end through the LIN line only by adding the address information once in the refresh process and even without adding the address information under the condition of chip appointment; similarly, the ECU end only needs to check the whole refreshing program module once in the subsequent check, so that the refreshing process and the check method are simplified, and the reliability of refreshing is ensured.

Description

technical field [0001] The present application relates to the technical field of electronic control units, and in particular, to a method for refreshing and verifying an ECU module based on a LIN line. Background technique [0002] LIN (Local Interconnect Network) is a low-cost serial communication network used to realize the control of distributed electronic systems in automobiles. Flashing the ECU based on the LIN line is a common method of updating the program. Many ECU modules with LIN communication are usually installed in some places of the vehicle that are not easy to disassemble. If it involves software updates, the ECU does not have a refresh function. Maintenance costs are very high. If the program can be updated through the LIN line, this risk can be completely reduced, and the cost can be greatly saved, so it is widely used. [0003] The LIN line transmits data over a single wire, and verification is relatively simple. When updating the software of some ECU mo...

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Problems solved by technology

[0004] This application provides an ECU module refresh verification method based on the LIN line, which can solve the problem of insufficient data verification during the refresh process of the ECU module based on the LIN line, resulting in at least the ECU module refresh failure, refresh crash, and later program runaway. one question

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