基于nRF905的无线通信的设计与实现

针对采用芯片nRF905的LED屏无线通信,分别给出了上位机和下位机的系统框图,分析了系统的功耗,比较了无线模块和串口通信的通信速率,验证了系统的可行性,设计了串口通信协议,为保证数据质量,设计了数据通信协议,针对串口数据的nRF905分包转发,设计了无线芯片通信协议,例举了状态机的5种状态,介绍了状态间的转换条件,巧妙地编程设计了通信数据的定时器检查,论述了基于状态机的嵌入式单片机软件编程。

Design and realization of wireless communication based on chip nRF905

Aiming at the LED screen wireless communication based on chip nRF905, the system block diagrams of host and slave computers were given, respectively. The system power dissipation was analysed. The communication rate of wireless module and serial communication was compared. The feasibility of system was validated. Also, the communication protocols were designed. Considering the subletting and forwarding of serial data by chip nRF905, the wireless communication protocols of chip were designed. Five different states of the state machine were listed. Moreover, the transformation condition between states was given. Timer inspection of communication data was realized by skillful programming. Software programming of embedded Singlechip based on state machine was discussed.