Developing a Multi-node Calibration System for CAN Bus Based Vehicle

Calibration is an important step in the development of the vehicle electronic control unit (ECU). After a successful design of the interface between TouCAN module and CAN bus and bit timing, master device may multi connect to slave nodes by broadcasting protocol commands to more than one slave node, we developed a multi-node calibration system for multi-ECU used vehicle based on CCP protocol. It was realized via reasonable configuration of identifiers of message buffers, message filter registers and bit timing. This calibration system provides an effective method to calibrate multi ECUs simultaneously and can help to match the parameters of different ECUs better.