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给出了一种利用单片机通用I/O口扩展串行通信口的方法。此方法 ,可以在不增加任何硬件的前提下 ,通过软件编程 ,实现了用单片机的通用输入输出口与其他装置进行串行通信 ,增加了单片机的通信能力。
A method of extending the serial communication port using the general purpose I / O port of the microcontroller is given. This method can realize the serial communication with other devices by using the general-purpose I / O port of the microcontroller through the software programming without any hardware increase, and increase the communication ability of the singlechip.