Agilent Technologies E1437A User Manual page 59

20 msample/second adc with filters and fifo

Table of Contents

E1437A User's Guide

VXI plug&play Programming Reference

hpe1437_attrib_get

Allows direct access to the I/O library functions.

VXIplug&play Syntax

#include "hpe1437.h"

ViStatus hpe1437_attrib_get(ViSession id, ViInt16 attrib, ViPint32 value);

Description

hpe1437_attrib_get is used primarily to manage the use of interrupts. Since interrupts

are a shared resource across all modules using the VXI interface, it is not possible for

the E1437 library, which governs single modules, to provide the functions to properly

manage interrupts.

This function is used to access either the I/O library handle or the mapped I/O base

address of the module. You should refer to the appropriate VISA or SICL

documentation for descriptions of the I/O library functions.

Parameters

id is the VXI instrument session pointer returned by the hpe1437_init function.

attrib designates the type of attribute to return. HPE1437_IO_HANDLE accesses the

I/O library handle. HPE1437_IO_ADDRESS points to the mapped I/O base address of

the module. HPE1437_RM_HANDLE accesses the I/O library handle of the default

resource manager. HPE1437_DATA_REGISTER points to the mapped address of the

E1437 data register. One or both of these parameters are used when calling I/O library

functions directly.

value is the value of the requested attribute. For a VTL/VISA I/O library the value of the

handle attribute corresponds to the vi parameter used by the majority of the I/O

functions. For the SICL I/O library the handle is equivalent to the session parameter

used by the majority of the I/O functions. In the case of SICL the long handle value

should be cast to a short in order to be type compatible with the SICL session. The

address attribute points to the base of the mapped I/O address space, regardless of

which underlying I/O library is used.

Effect on Active

This command does not abort any measurement in progress.

Measurement