PIC单片机与C8051F020单片机的串行通讯  

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

作　　者：陈文辉[1] 蔡启仲[1] 郭毅锋[1] 周明[1] 

机构地区：[1]广西工学院电子信息与控制工程系,广西柳州545006

出　　处：《广西工学院学报》2004年第4期40-43,54,共5页Journal of Guangxi University of Technology

基　　金：广西工学院青年科学基金(030214).

摘　　要：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。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.

关 键 词：波特率 异步串行通讯 PIC单片机 MCS51单片机 C8051F020单片机 软件插值 内核 晶振 例子 保证 

分 类 号：TP368.1[自动化与计算机技术—计算机系统结构] TP336[自动化与计算机技术—计算机科学与技术]