Software refreshing method and equipment for vehicle

Abstract

The invention provides a software refreshing method and equipment for a vehicle, and the method comprises the steps: when external equipment carries out software refreshing operation on a DCAN controller of a vehicle-mounted diagnosis interface, the external equipment sends a configuration instruction to the DCAN controller; wherein the communication mode between the DCAN controller and the external equipment is configured as CAN communication by default; the DCAN controller responds to the configuration instruction, and the communication mode between the DCAN controller and the external equipment is switched to CANFD communication; the external equipment performs software refreshing on the DCAN controller; and when software refreshing is completed, the DCAN controller switches the communication mode between the DCAN controller and the external equipment into CAN communication. According to the invention, when the DCAN needs to carry out software refreshing, the CAN communication is switched to the CANFD communication, and the CAN communication is defaulted at other times, so that the configurability of the DCAN communication protocol is realized, the compatibility of the external equipment of the DCAN is realized, and the efficiency of refreshing the software by the DCAN is improved.

Description

technical field [0001] The present invention relates to the technical field of vehicle software refresh, in particular to a method and device for software refresh of a vehicle. Background technique [0002] With the increase in the number and complexity of automotive electronic and electrical functions, the software package of the on-board controller increases, which makes software upgrades through traditional CAN bus communication take longer and longer, and it is difficult to meet the needs of rapid upgrades. Because CANFD has a high communication rate, engineers began to design the software upgrade of the controller through CANFD communication. However, this requires that the DCAN connected to the OBD port of the vehicle also needs to be upgraded to CANFD communication. At present, the third-party equipment connected to DCAN (such as the detection equipment of the DCAN) still uses CAN communication, and the OBD port DCAN of the OEM adopts the traditional CAN communication...

AI Technical Summary

Problems solved by technology

At present, the third-party equipment connected to DCAN (such as the detection equipment of the vehicle management institute, etc.) still uses CAN communication, and the DCAN of the OBD port of the vehicle factory adopts the traditional CAN communication design, which can be well compatible with the external equipment of the OBD port, but The communication rate of DCAN is limited, and the efficiency of refreshing software through DCAN cannot be improved

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