ELECTRONIC CONTROL UNIT FOR VEHICLE AND DATA COMMUNICATION METHOD

摘要

An electronic control unit for a vehicle includes a nonvolatile memory that is capable of erasing and writing data electrically, and capable of receiving a program to be written into the nonvolatile memory in units of a predetermined size by means of communication using a communication buffer. The electronic control unit for the vehicle uses communication buffers, the number of which is greater than the number of communication buffers used in an in-vehicle communication environment, to receive the program.

主权项

1. An electronic control unit for a vehicle, connected to an external writing device that writes at least a control program for controlling the vehicle and a setting program of communication buffers, and comprising a first communication buffer used for communication with the external writing device and second communication buffers, each used for communication with a corresponding external device that controls the vehicle,
wherein the setting program of the communication buffers received from the external writing device assigns the second communication buffers as the first communication buffer, and the first communication buffer and the second communication buffers assigned as the first communication buffer are used to receive the control program and data from the external writing device.