Measurement-computing Personal488 rev.3.0 For DOS & Windows 3.Xi Bedienungsanleitung PDF herunterladen (Seite 173)

9E. C Languages II. SOFTWARE GUIDES - 9. Driver488/SUB

II-158 Personal488 User’s Manual, Rev. 3.0

100u sec scan interval (I3)

No pre-trigger scans, 100 post-trigger scans (n100)

Continuous trigger on GET (T1)

Output (adc,”G10I3N100T1X”) ;

/*Wait for the ready bit of the ADC488 to be asserted*/

while ((SPoll (adc) &32)==0) ;

/*Trigger the ADC488 */

Trigger(adc);

/*Wait for the acquisition complete bit to be asserted*/

while ((SPoll (adc) &128)==0) ;

/*Reset the buffer pointer of the ADC488 */

Output (adc,”BOX”) ;

/*Take 100 readings from the ADC488* /

noterm.EOI=0;

noterm.nChar=0;

EnterX(adc, (char*)hundred,200,1,&noterm,1,0L);

/*Check the Status before and after waiting */

Status (ieee,&substat) ;

showstat (&substat) ;

/* Wait for completion of input operation */

Wait (adc);

/*Display the Driver488/SUB system status */

Status (ieee,&substat) ;

showstate (&substat) ;

/* Print the received characters */

for (i=0;id;i++) {

printf(“%6d”,hundred[i]) ;

if ((i%10)==9)

printf (“\n”) ;

}

/*Interrupt service routine for Driver488/SUB interrupts */

void isr (OpaqueP param) {

int sp,

stadc,

errnum;

char errtext [64] ;

/*Print parameter passed to isr to screen */

printf (“ In interrupt handler, param=%d\n”,param) ;

/* Check if the interrupt was due to a Service Request */

sp=SPoll (ieee) ;

if (sp==0) {

printf (“ No SRQ detected\n”) ;

exit (1) ;

}

/* Check that the Service Request was from the ADC488 */

stadc=SPoll (adc) ;

if ((stadc&0x40)==0) {

printf(“ Not an ADC488 SRQ.\n”) ;

exit (1) ;

}

/* Interpret the Serial Poll response */

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