Hp E1459A Bedienungsanleitung PDF herunterladen (Seite 39)

38 Using the HP E1459A Module

if (VI_SUCCESS > errStatus){

printf("ERROR: viPrintf() returned 0x%x\n",errStatus);

return errStatus;}

Enable Port 0 Edge Detection

errStatus = viPrintf (E1459, "EVEN:PORT0:EDGE:ENAB ON\n");

if (VI_SUCCESS > errStatus){

printf("ERROR: viPrintf() returned 0x%x\n",errStatus);

return errStatus;}

Loop and poll Port Summary Register until event occurs

while (event = 0)

{

errStatus = viQueryf (E1459, "EVEN:PSUM:EDGE?\n","%t",event);

if (VI_SUCCESS > errStatus){

printf("ERROR: viPrintf() returned 0x%x\n",errStatus);

return errStatus;}

}

Read NEDGE register and clear event detector register

errStatus = viQueryf (E1459, "EVEN:PORT0:NEDGE?\n","%t",val);

if (VI_SUCCESS > errStatus){

printf("ERROR: viPrintf() returned 0x%x\n",errStatus);

return errStatus;}

printf ("Negative Edge Event value = %s\n",val);

Read PEDGE register and clear event detector register

errStatus = viQueryf (E1459, "EVEN:PORT0:PEDGE?\n","%t",val);

if (VI_SUCCESS > errStatus){

printf("ERROR: viPrintf() returned 0x%x\n",errStatus);

return errStatus;}

printf ("Positive Edge Event value = %s\n",val);

Close Sessions

errStatus = viClose (E1459);

if (VI_SUCCESS > errStatus){

printf("ERROR: viClose() returned 0x%x\n",errStatus);

return 0;}

errStatus = viClose (viRM);

if (VI_SUCCESS > errStatus){

printf("ERROR: viClose() returned 0x%x\n",errStatus);

return 0;}

}

/* End of main program */

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Hp E1459A Bedienungsanleitung Seite 39