Instrument Drivers - VXI VT1422A User Manual

return;
}
rst_inst(); /* Resets the instrument and sends a device clear */
reads_instrument_id();
/* close the device session */
hpe1422_close(addr);
}
/****************************************************************************/
void rst_inst(void)
/* Function to set the interface timeout period, resets the instrument, */
/* waits for completion of reset and sends a device clear to enable */
/* the instrument to receive a new command */
{
ViInt32 result;
/* set timeout to allow completion of reset */
errStatus = hpe1422_timeOut(addr, 5000);
check(addr, errStatus);
/* reset the instrument */
errStatus = hpe1422_reset(addr);
check(addr, errStatus);
/* wait for completion of *RST */
errStatus = hpe1422_cmdInt32_Q(addr,"*OPC?",&result);
check(addr, errStatus);
/* send a device clear to enable new commands to be sent to the instrument */
errStatus = hpe1422_dcl(addr);
check(addr, errStatus);
/* enables automatic error checking after each driver call */
errStatus = hpe1422_errorQueryDetect( addr, VI_TRUE);
}
/****************************************************************************/
void reads_instrument_id(void)
/* Function uses a hpe1422__revision_query to read the software revision */
/* string. */
{
ViChar driver_rev[256];
ViChar instr_rev[256];
/* Query the instrument for its firmware revision */
errStatus = hpe1422_revision_query(addr,
/* Print the results */
printf("The instrument driver's revision is %s\n", driver_rev);
printf("The instrument's firmware revision is %s\n", instr_rev);
}
/****************************************************************************/
/****************************************************************************/
/* error checking routine */
void check (ViSession addr, ViStatus errStatus)
{
ViInt32 err_code;
ViChar err_message[256];
Chapter 1
/* Reads instrument software revision */
driver_rev, instr_rev);
Getting Started 33