怎么用LV編寫USB設備的驅動？

現在要用LV寫一個USB驅動。已經有DLL，接口說明如：
Declare Function ReadPort1 Lib "EasyD12.dll" (ByRef pData As Byte, ByVal iLen As Integer) As Integer
Declare Function ReadPort2 Lib "EasyD12.dll" (ByRef pData As Byte, ByVal iLen As Integer) As Integer
Declare Function WritePort1 Lib "EasyD12.dll" (ByRef pData As Byte, ByVal iLen As Integer) As Integer
Declare Function WritePort2 Lib "EasyD12.dll" (ByRef pData As Byte, ByVal iLen As Integer) As Integer
還有一個VB調用的例子，但是我看得不怎么明白，那位高人指點一下，怎么用LV來調用這個DLL。

[ 本帖最后由 Iamsum 于 2007-6-26 09:24 编辑 ]

這個問題已經解決。

sadboy123

厉害
一般USB都有驱动吧

wofly

这个驱动有什么用？