Detailed explanation of automotive electronics CAN bus

CAN bus is a serial communication protocol widely used in automotive electronic systems, with the characteristics of high speed, reliability, and strong anti-interference ability. Through the CAN bus, the ESP controller can interact and share data with other vehicle systems to achieve collaborative work. The CAN bus protocol principles include multi-master communication, non-destructive arbitration, serial communication, differential signal, data frame format, error detection and correction, identifier and data length, network topology, communication speed and other aspects. These principles together realize efficient and reliable communication between various electronic control units of the car, improving the overall performance and safety of the car.