Measurement-computing Personal488 rev.3.0 For DOS & Windows 3.Xi Instrukcja Użytkownika Pobierz pdf (Strona 87)

8G. QuickBASIC II. SOFTWARE GUIDES - 8. Driver488/DRV

II-72 Personal488 User’s Manual, Rev. 3.0

990 INPUT#2,ST$

1000 PRINT ST$

1010 PRINT#1,"WAIT"

1020 PRINT#1,"STATUS"

1030 INPUT#2,ST$

1040 PRINT ST$

2000 SRQ: ‘Interrupt service routine—Entered due to SRQ

2010 ‘

2020 ‘RETURN if Driver488/DRV is not ready for commands.

2030 IF IOCTL$(2)"0" THEN RETURN

2040 ‘

2050 ‘Check that it is indeed an SRQ

2060 PRINT#1,"SPOLL"

2070 INPUT#2,SP

2080 IF SP=0 THEN PRINT “Non-SRQ Interrupt!”: STOP

2110 PRINT#1,"SPOLL 16"

2120 INPUT#2,ST195

2130 IF (ST195 AND 64) = 0 THEN PRINT “Non-195 SRQ!”: STOP

2160 IF (ST195 AND 32)=0 THEN ‘Test ERROR Status Bit

‘Interpret no-error status

2210 IF ST195 AND 1 THEN PRINT “Overflow”

2220 IF ST195 AND 2 THEN PRINT “Buffer Full”

2230 IF ST195 AND 4 THEN PRINT “Buffer 1/2 Full”

2240 IF ST195 AND 8 THEN PRINT “Reading Done”

2250 IF ST195 AND 16 THEN PRINT “Busy”

2260 ELSE

‘Interpret error status

2310 IF ST195 AND 1 THEN PRINT “Illegal Command Option”

2320 IF ST195 AND 2 THEN PRINT “Illegal Command”

2330 IF ST195 AND 4 THEN PRINT “No Remote”

2340 IF ST195 AND 8 THEN PRINT “Trigger Overrun”

2350 IF ST195 AND 16 THEN PRINT “Failed Selftest”

2360 END IF

2400 RETURN

Use of the Character Command Language

In order to simplify programming Driver488/DRV with C, the following files are provided on the

Driver488/DRV program disk:

8H. Turbo C

Topics

• Use of the Character Command Language...............................II-71

• Initialization of the System..........................................................II-72

• Configuration of the 195 DMM ....................................................II-74

• Taking Readings.............................................................................II-74

• Buffer Transfers..............................................................................II-75

• Interrupt Handling ........................................................................II-76

• IEEEIO.C ..........................................................................................II-78

• CRITERR.ASM (Microsoft C & Turbo C)...................................II-80

• Sample Program .............................................................................II-80

1 2 ... 82 83 84 85 86 87 88 89 90 91 92 ... 399 400

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