基于PIC16F877的终端结点控制器的设计与实现

Design and Implementation of Terminal Node Controller Based on PIC16F877

介绍了国际业余无线电联盟公布的分组无线网的AX.25协议,并对分组无线网的AX.25协议有限状态机模型进行了分析。提出了基于AX.25协议构成分组无线网的方案,给出了基于AX.25协议的终端结点控制器(TNC)的硬件和软件实现方法。结合终端结点控制器、收发设备和具有标准RS-232接口的计算机连接方案,说明了实现无线分组通信的方法。

This paper introduces the AX. 25 protocol of The International Amateur Radio League, and analyzes the AX. 25 model. It also introduces a scheme of packet radio networks using the AX. 25 protocol and proposes a way to implement the hardware and software of the terminal node controller（TNC）. In terms of the terminal node controller to connect the transmitter-receiver and computer that has RS-232, this paper explains the method of packet radio communication.