Experimental Physics and
Industrial Control System

[email protected] (John Spring) · Fri, 26 Jan 96 01:51:27 PST

Hi guys:

If you have the time could you answer a question?

Why would the following code fragment not work?

double waveform_array[16384];
assign waveform_array to "WAVEFORM_ARRAY.VAL";

/****** Acquire data and stuff it into an array: this part  *****/
/****** works because I can print out believable data using *****/
/****** the printf statement below.                         *****/

/* write to waveform */
%%	array1_ptr=lpanarray1;
%%	for(count=0;count<lnumsamples;count++)
%%	  {
%%		waveform_array[count] = (double)(array1_ptr[count]*3.091e-10);
%%		printf("%e\n",waveform_array[count]);
%%	  }
	pvPut(waveform_array);

My database file for this record looks like this:

    record(waveform, "WAVEFORM_ARRAY")
    {
        field(DESC, "Array for HP positions")
        field(SCAN, "Passive")
        field(PINI, "NO")
        field(PHAS, "0")
        field(EVNT, "0")
        field(DTYP, "Soft Channel")
        field(DISV, "1")
        field(SDIS, "0")
        field(DISS, "NO_ALARM")
        field(PRIO, "LOW")
        field(FLNK, "0")
        field(RARM, "0")
        field(PREC, "4")
        field(INP, "0")
        field(EGU, "nm")
        field(HOPR, "1.0e-08")
        field(LOPR, "-1.0e-08")
        field(NELM, "16384")
        field(FTVL, "DOUBLE")
        field(SIOL, "0")
        field(SIML, "0")
        field(SIMS, "NO_ALARM")
    }

Instead of putting this array into my waveform record, the dang computer 
prints the error message: 

error from CA on WAVEFORM_ARRAY.VAL
The array or data structure specified will not fit in CA message buffer

Any ideas what's wrong? Thank you very much!

John Spring

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System