Method for Flexible Cross-bit Configuration of Message Data Based on J1939 Protocol
CAN bus J1939 message is particularly important in the development of automobile system,and the configuration of message is increasing gradually.This paper proposes and verifies a flexible bit by bit config-uration method of message data.By calibrating the byte length of a variable in the J1939 message communication matrix and its position in the message,the message data of a variable can be obtained.This technology can real-ize the message data configuration of a variable across bytes in the unit of bits,which plays an important role in the construction of message configuration.
J1939Program flashMessage bit by bit configuration