一种基于AT89S52单片机的红外通信接口的设计

A Design of Infrared Communication Interface Based on Microcontroller AT89S52

提出一种基于AT89S52单片机和MAX3100红外通信接口,利用单片机内部的PWM发生器产生载波信号,采用软件编程方式调节载波频率、脉宽,成功实现了单片机串口的红外数据传输,给出了具体的硬件电路及软件设计原理.

This paper introduces the operating principle and advantage of the infrared communication, and bring forward a kind of interface based on AT89S52 microcontroller and MAX3100. Make use of the internal PWM of the microcontroller to produce a carrier signal, and adopt software programming to adjust carrier frequency,pulse width, we successfully realize the infrared communication. This paper also provide the concrete hardware circuit, and the procedural flow. This infrared interface is reliable,and has a broad prospect in application.