Baud rate adaptation method, apparatus, computer equipment and readable storage medium

Abstract

The present application relates to a baud rate adaptation method, apparatus, computer equipment and readable storage medium. The method includes: monitoring the CAN FD bus, and within a preset measurement time period, measuring the time interval between adjacent level change edges in the adaptive message sent by the reference ECU to the CAN FD bus, and the length of the adaptive message. The ID field includes a preset number of consecutive and identical logic bits; the minimum time interval and the maximum time interval are determined from each time interval, and the baud rate of the data field of the CAN FD network message is obtained according to the minimum time interval, and the baud rate of the data field of the CAN FD network message is obtained according to the maximum time interval. Obtain the baud rate of the target domain of the CAN FD network message at intervals; set the network configuration parameters of the target ECU according to the baud rate of the data domain and the baud rate of the target domain, so that the target ECU and the reference ECU are transmitted through the CAN FD bus CAN FD network message. The method can improve the baud rate adaptive efficiency of the ECU on the CAN FD bus.

Description

technical field [0001] The present application relates to the field of communication technologies, and in particular, to a baud rate adaptation method, apparatus, computer device and readable storage medium. Background technique [0002] CAN is the abbreviation of Controller Area Network, and the CAN bus protocol has become a standard bus for communication between automotive ECUs (Electronic Control Unit, electronic control unit). CAN FD (CANwith Flexible Data rate) is based on CAN, which makes up for the constraints of CAN bus bandwidth and data field length, and better meets people's requirements for data transmission bandwidth. [0003] Similar to CAN, the baud rates of all ECUs on the CAN FD bus must be matched, otherwise normal communication cannot be performed. At present, the ECUs on the CAN FD bus mainly realize the self-adaptation of the baud rate through the adaptation method. The adaptation method is to try to set the network configuration parameters of the ECU i...

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Problems solved by technology

[0004] However, the above method of baud rate adaptation is inefficient and may affect the normal communication of ECU

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