LabView的USB开发指南

labview开发 usb接口通信
USB Instrument Control Tutorial
Overview
This tutorial is meant as a starting point for using NI-VISA to communicate with a USB device. It is not intended as a
starting point for learning about USB architecture or the various protocols used in USB communication. After reading
this tutorial, you should be able to install a USB device and use NI-VISA to communicate with that device, as long as
you understand the device communication protocol.




1. USB and VISA Background

VISA is a high-level API used to communicate with instrumentation buses. It is
platform independent, bus independent, and environment independent. In other
words, the same API is used regardless of whether a program is created to
communicate with a USB device with LabVIEW on a machine running Wi