National Instruments NI-VXI

Chapter 3 Software Overview

GetDevInfo (la, field, fieldvalue)

GetDevInfo returns information about the specified device from the

NI-VXI RM table. The field parameter specifies the attribute of the

information to retrieve. Possible fields include the device name,

Commander’s logical address, mainframe number, slot, manufacturer

ID number, model code, model name, device class, VXI address

space/base/size allocated, VXI interrupt lines/handlers allocated,

protocols supported, and so on. A field value of zero (0) specifies to

return a structure containing all possible information about the

specified device.

GetDevInfoLong (la, field, longvalue)

GetDevInfoLong returns information about the specified device from

the NI-VXI RM table. The field parameter specifies the attribute of the

information to retrieve. GetDevInfoLong is a function layered on top

of GetDevInfo for languages (such as BASIC) that cannot typecast

the fieldvalues of GetDevInfo. GetDevInfoLong returns only the

fields of GetDevInfo that are 32-bit integers. Possible fields include

the VXI address base and size allocated to the device by the RM.

GetDevInfoShort (la, field, shortvalue)

GetDevInfoShort returns information about the specified device

from the NI-VXI RM table. The field parameter specifies the attribute

of the information to retrieve. GetDevInfoShort is a function layered

on top of GetDevInfo for languages (such as BASIC) that cannot

typecast the fieldvalues of GetDevInfo. GetDevInfoShort returns

only the fields of GetDevInfo that are 16-bit integers. Possible fields

include the Commander’s logical address, mainframe number, slot,

manufacturer ID number, manufacturer name, model code, device

class, VXI address space allocated, VXI interrupt lines/handlers

allocated, protocols supported, and so on.

GetDevInfoStr (la, field, stringvalue)

GetDevInfoStr returns information about the specified device from

the NI-VXI RM table. The field parameter specifies the attribute of the

information to retrieve. GetDevInfoStr is a function layered on top

of GetDevInfo for languages (such as BASIC) that cannot typecast

the fieldvalues of GetDevInfo. GetDevInfoStr returns only the

fields of GetDevInfo that are character strings. Possible fields

include the device name, manufacturer name, and model name.