Measurement Computing Personal488 rev.3.0 For DOS & Windows 3.Xi - Manual (Page 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,¬erm,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 */