CAN总线波特率的自适应算法设计

Design of Baud Rate Adaptive Algorithm Based on CAN Bus

CAN总线上各节点的波特率必须保持一致才能进行可靠通信,为了解决新增节点能够自动适配未知CAN总线波特率的问题,设计CAN总线波特率自适应算法,并在STM32F407嵌入式开发平台上进行了实验测试。实验结果表明,新增节点能够自动适配多种常见波特率,识别速度快、稳定性好,算法在较大程度上能够提高CAN通信的灵活性。

The baud rate of each node on the CAN bus must be consistent in order to communicate reliably.To solve the problem that new nodes could automatically adapt the baud rate of the unknown CAN bus,a baud rate adaptive algorithm of CAN bus is designed.The experiment is carried out on STM32F407 embedded development platform.The experiment results show that the new nodes can automatically adapt to a variety of common baud rates,the recognition speed is fast and the stability is good.The algorithm could greatly improves the flexibility of CAN communication.