Re: initializing a waveform record

[Gasper Pajor <gasper.pajor@cosylab.com>]

Hello Mark, Steve

We came across the same problem - filling the waveform with static data 
- and  the best solution we found so far is the use of state notation 
language.

Here is an example code for what we do :

double arr[100];
assign arr to "CURVES:SINE";
%% int i;

......
......
      state init
      {
         when()
         
{                                                                                                                                     

           %%  for(i=0;i<100;i++) arr[i] = sin(0.1*i);
           %%  j=0;
           pvPut(arr);
         } state somethingelse
      }

......
......

We use sequencer and 2.0.8 and epics base 3.14.x.
Hope this helps,

Gasper Pajor,
Cosylab


Singleton, SJ (Steve) wrote:

> Hello Mark
>
> I use EPICS subroutine (SUB) records to initialise waveform records, with
> the attached code.  Because of the limitation on the number of 
> arguments to
> a SUB record it is only possible to initialise up to nine elements of the
> array from one SUB record.  The arguments of the SUB record are as 
> follows:
>
> INPA - the waveform record
> INPB - the index number of the first waveform element to be set up by 
> this
> SUB record.
> INPC - the number of elements to be initialised by the SUB record, in the
> range 1 - 9.
> INPD to INPL - the values to which the elements are to be set.
>
> Hope this helps.
>
> Regards
> Steve Singleton
>
>
> -----Original Message-----
> From: owner-b-tech-talk@mail.bessy.de
> [mailto:owner-b-tech-talk@mail.bessy.de]On Behalf Of Mark M. Ito
> Sent: 04 July 2004 02:14
> To: tech-talk@aps.anl.gov
> Subject: initializing a waveform record
>
>
> What is there a standard way to initialize the values of a waveform 
> record?
>
> I saw Andrei Liyu's post from this past Apr. 8. He seems to imply that 
> the standard is to call dbPutField. Does one write a VxWorks 
> subroutine to make this call and load the array?
>
> The array is of floats, and will be about 100 elements long. The 
> values are static; they never change.
>
> I also looked at the waveform record description in the Record 
> Reference Manual. That did not help me given my lack of basic 
> understanding of this stuff.
>
> I also skimmed the contents of the Application Developer's Guide. No 
> help for me there either.
>
>