National Instruments NI-VXI user manual - page 5

Table of Contents
NI-VXI User Manual vi © National Instruments Corporation
Multiple Mainframe Support.....................................................................................2-5
Controllers...................................................................................................2-5
The extender and controller Parameters......................................................2-7
Using NI-VXI............................................................................................................2-9
Header Files.................................................................................................2-9
The datasize.h File........................................................................ 2-9
The busacc.h File.......................................................................... 2-10
The devinfo.h File.........................................................................2-10
The Beginning and End of an NI-VXI Program......................................... 2-10
System Configuration Tools........................................................................2-11
Word Serial Communication.......................................................................2-13
Master Memory Access...............................................................................2-14
Slave Memory Access.................................................................................2-16
Interrupts and Signals................................................................... 2-17
Triggers....................................................................................................... 2-19
Chapter 3
Software Overview
System Configuration Functions............................................................................... 3-1
CloseVXIlibrary..........................................................................................3-2
CreateDevInfo.............................................................................................3-2
FindDevLA................................................................................................. 3-2
GetDevInfo..................................................................................................3-3
GetDevInfoLong......................................................................................... 3-3
GetDevInfoShort.........................................................................................3-3
GetDevInfoStr.............................................................................................3-3
InitVXIlibrary............................................................................................. 3-4
SetDevInfo.................................................................................................. 3-4
SetDevInfoLong..........................................................................................3-4
SetDevInfoShort..........................................................................................3-5
SetDevInfoStr..............................................................................................3-5
Commander Word Serial Protocol Functions............................................................3-5
Programming Considerations......................................................................3-7
Interrupt Service Routine Support...............................................................3-7
Single-Tasking Operating System Support................................................. 3-8
Cooperative Multitasking Support.............................................................. 3-8
Multitasking Support...................................................................................3-8
WSabort.......................................................................................................3-10
WSclr...........................................................................................................3-10
WScmd........................................................................................................3-10
WSEcmd..................................................................................................... 3-11
WSgetTmo.................................................................................................. 3-11