Data transmission method based on AFP protocol

The invention provides a data transmission method based on an AFP protocol. The method includes the following steps: S100, a transmitting end determines whether a bus is in an idle state; S200, when the bus is in the idle state, the transmitting end sends a data frame to the bus; and S300, a receiving end receives the data frame sent by the transmitting end according to a clock frequency configured by the transmitting end. According to the method provided by the invention, through the mode that the transmitting end drives a clock line and a data line, the purposes that the status of each porton the bus is equal and master/slave modes do not need to be distinguished can be achieved. 本发明提供了种基于AFP协议的数据传输方法，包括步骤S100发送端判断总线是否处于空闲状态；步骤S200当所述总线处于空闲状态时，所述发送端向所述总线发送数据帧；步骤S300接收端根据所述发送端配置的时钟频率，接收所述发送端发送的所述数据帧。本发明通过发送端驱动时钟线与数据线的方式，实现总线上各端口地位平等，无需区分主从模式的目的。