单片机串行口的扩展方法

Study on the spread of SCM serial port

介绍了扩展串口的方法以解决在实际应用中遇到的单片机串行口资源不足的问题,为解决这个问题,分别介绍了硬件串行口扩展和软件模拟串行口方法,给出了实际的硬件电路原理及软件程序段,以及对多种解决方案进行比较.

This paper introduces a method of expanding the serial port to solve the problem of lacking in SCM serial port in practice. In order to solve it, this paper provides the method of how to use hardware to expanding serial port and software to simulate serial port ahd provides an actual hardware circuit schematic diagram and a software program and severed solution schemes are compared with each other with the manifold projects.