PIC单片机与C8051F020单片机的串行通讯

在仪器仪表和测控系统中，PIC单片机与以MCS51单片机为内核的单片机之间进行异步串行通讯时，由于各系统的晶振和计算波特率的方法都不一样，使得串行通讯过程中常由于存在波特率误差而使通讯失败。为了提高系统中串行通讯的准确性，提出重新调整系统波特率的软件插值方法，以降低波特率的误差，使各系统通讯波特率基本一致，保证了通讯的准确性，并给出了实际应用的例子。

Serial communication of PIC single-chip slicer and C8051F020 single-chipslicer

In the system of instruments and the control system,and when PIC single-chip slicer and the single-chip slicer conduct asynchronous serial communication which uses MSC 51 single-chip slicer as the internal core,the communications failed because of errors of baud rate during the course of the serial communication and because the crystal oscillation of various systems is different from the method of calculating baud rate.In order to raise the accuracy of the serial communication,the paper put forward a method of readjusting the software insert value of baud rate of the system so as to reduce errors of baud rate and make baud rates of respective system coincident,thus insuring the accuracy of communication.And examples of real application are given.