摘要
本文介绍了利用单片机(C8051F020)的PCA产生一个占空比可调的PWM波,以虚拟仪器LabVIEW8.5为上位机开发平台,通过设计系统软件,并利用计算机串口与下位机串口通讯,实现由上位机控制PWM波输出占空比的改变。
This paper introduces a MCU-PCA based approach to produce a PMW wave with adjustable duty cycle.The system uses LabVIEW8.5 as PC designing platform and establishes a serial communication between PC and MCU so as to control the duty cycle of an output PWM wave.
出处
《微计算机信息》
2010年第20期61-62,41,共3页
Control & Automation
