Measurement-computing Personal488 rev.3.0 For DOS & Windows 3.Xi Uživatelský manuál stáhnout pdf (Strana 182)

II. SOFTWARE GUIDES - 9. Driver488/SUB 9F. QuickBASIC

Personal488 User’s Manual, Rev. 3.0 II-167

IF ((stadc% AND 32) > 0) THEN PRINT “ Ready”

IF ((stadc% AND 64) > 0) THEN PRINT “ SRQ asserted”

IF ((stadc% AND 128) > 0) THEN PRINT “ Data acquisition complete”

RETURN

SUB, showstat (substat AS IeeeStatus)

‘ Display Status from Driver488/SUB

PRINT “SC :”; substate.SC>,

PRINT “CA :”; substate.CA,

PRINT “Primaddr :”; substate.Primaddr

PRINT “Secaddr :”; substate.Secaddr,

PRINT “SRQ :”; substate.SRQ,

PRINT “addrChange :”; substate.addrChange

PRINT “talker :”; substate.talker,

PRINT “listener :”; substate.listener,

PRINT “triggered :”; substate.triggered

PRINT “cleared :”; substate.cleared,

PRINT “transfer :”; substate.transfer,

PRINT “byteIn :”; substate.byteIn

PRINT “byteOut :”; substat.byteOut

END SUB

Command Summary

To obtain a summary of the QuickBASIC language commands for Driver488/SUB, turn to the

“Section III: Command References” of this manual.

Accessing from a Pascal Program

Driver488/SUB provides support for Borland Turbo Pascal. To allow for ready access to all

Driver488/SUB functions and type definitions, an include file provides all required declarations. In

addition, one include file must be included in the main module to provide for automatic detection of

certain compiler options and enable the required adjustments within the driver. Note that the header

files (

*.h

) must be included in your program and linked to the proper Driver488/SUB library files, as

described in the Sub-Chapter “Getting Started” earlier in this Chapter. The following include (

uses

)

directives should appear near the beginning of the program:

uses iottp60;

9G. Pascal

Topics

• Accessing from a Pascal Program............................................ II-166

• Establishing Communications .................................................. II-167

• Confirming Communication...................................................... II-168

• Setting Up Event Handling........................................................ II-168

• Reading Driver Status................................................................. II-168

• External Device Initialization................................................... II-169

• Interrupt Handling...................................................................... II-169

• Basic Data Acquisition................................................................ II-170

• Block Data Acquisition............................................................... II-170

• Sample Program........................................................................... II-171

• Command Summary .................................................................... II-174

1 2 ... 177 178 179 180 181 182 183 184 185 186 187 ... 399 400

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