Re: sub routine record doesn't get value via INPD

[Matthieu Bec <mbec@gemini.edu>]

doubles need %lf to printf.
Could that be your problem ??

#include <stdio.h>
int main (int argc, char *argv[]) {
   double f=200.;
   float *pf = (float*)&f;
   printf ("%f\n",*pf);
   printf ("%lf\n",*(double*)pf);
   return 0;
}

./a.out
0.000000
200.000000




On 07/13/09 19:46, Allison, Stephanie wrote:
> Hi Andy,
>
> Peter didn't provide the full dbpr of the AO record (unfortunate) but assuming he has ESLO=1.0 (default), because he's using raw soft support and he has LINR set to LINEAR, RVAL is getting set to 200.
>
> I tested his database on 3.14.8.2 (setting the sub to a calc) and saw D set to 200 as it should be.  I wonder if his subroutine function is doing something bad like overwriting some record fields.
>
> Stephanie Allison
>
> > -----Original Message-----
> > From: tech-talk-bounces@aps.anl.gov [mailto:tech-talk-bounces@aps.anl.gov] On Behalf
> > Of Andy Foster
> > Sent: Monday, July 13, 2009 4:35 PM
> > To: Dr. Peter Zumbruch
> > Cc: Epics Questions
> > Subject: Re: sub routine record doesn't get value via INPD
> >
> >
> > Hi Peter,
> >
> > The "dbpf HAD:RPC:S1:M0:C9:ToTL 200" is putting 200 into
> > the VAL field of the AO record: "HAD:RPC:S1:M0:C9:ToTL"
> > rather than the RVAL field. Thus, the RVAL field remains at 0.0.
> >
> > The OUT link from the AO record gets processed as a result of
> > writing to the AO record:
> >
> > field(OUT, "HAD:RPC:S1:M0:C9:stToTL")
> >
> > This link causes the "200" to be placed in the VAL field of
> > the sub record: "HAD:RPC:S1:M0:C9:stToTL".
> >
> > The sub record INPD field is looking at the RVAL field of
> > the AO field which is still at 0.0.
> >
> > Cheers,
> >
> > Andy
> >
> >
> >
> > On Mon, 13 Jul 2009, Dr. Peter Zumbruch wrote:
> >
> > > Hi all,
> > > I have the following problem (EPICS 3.14.10 / Debian 4.0)
> > > with this tiny database (minimized to my problem) .
> > > Why don't I see the Value/Raw Value of "HAD:RPC:S1:M0:C9:ToTL" at the
> > > input D of the sub record "HAD:RPC:S1:M0:C9:stToTL", which I try to
> > > access at c-code.
> > >
> > > 1) The ingredients:
> > > > record(ao, HAD:RPC:S1:M0:C9:ToTL) {
> > > >    field(DESC, "0 0 0 2")
> > > >    field(DTYP, "Raw Soft Channel")
> > > >    field(FLNK, "HAD:RPC:S1:M0:C9:stToTL")
> > > >    field(OUT, "HAD:RPC:S1:M0:C9:stToTL")
> > > >    field(EOFF, "0")
> > > >    field(LOPR, "0")
> > > >    field(HOPR, "199")
> > > >    field(DRVH, "250")
> > > >    field(DRVL, "0")
> > > >    field(LINR, "LINEAR")
> > > >    field(OMSL, "supervisory")
> > > > }
> > > >
> > > > record(sub, HAD:RPC:S1:M0:C9:stToTL) {
> > > >    field(DESC, "store 0 0 0 2")
> > > >    field(INAM, "mySubInit")
> > > >    field(SNAM, "myStoreFcn")
> > > >    field(INPA, "0")
> > > >    field(INPB, "0")
> > > >    field(INPC, "2")
> > > >    field(INPD, "HAD:RPC:S1:M0:C9:ToTL.RVAL")
> > > >    field(INPE, "0")
> > > > }
> > > The referenced C-Code:
> > > > static long myStoreFcn(subRecord *precord)
> > > > {
> > > >    ...
> > > >    short thr;
> > > >    ...
> > > >    thr = precord->d;
> > > >    ...
> > > >
> > > >    printf( "Record %s called myStoreFcn(%p), thr %d, precord->d %f\n",
> > > >             precord->name, (void*) precord, thr, precord->d);
> > > >    ...
> > > >    return(0);
> > > > }
> > > > ...
> > > > epicsRegisterFunction(myStoreFcn);
> > > > ...
> > > 2.) The test: (caput / dbpf)
> > >
> > > > epics>  dbgf HAD:RPC:S1:M0:C9:ToTL
> > > > DBR_DOUBLE:         0
> > > >
> > > > epics>  dbpf HAD:RPC:S1:M0:C9:ToTL 200
> > > > Record HAD:RPC:S1:M0:C9:stToTL called myStoreFcn(0x80577b0), thr 0,
> > > > precord->d 0.000000
> > > > DBR_DOUBLE:         200
> > > >
> > > > epics>dbpr HAD:RPC:S1:M0:C9:stToTL
> > > > A: 0                ASG:                B: 0                C: 2
> > > > D: 0                DESC: store 0 0 0 2 DISA: 0             DISP: 0
> > > > DISV: 1             E: 0                F: 0                G: 0
> > > > H: 0                I: 0                J: 0                K: 0
> > > > L: 0                NAME: HAD:RPC:S1:M0:C9:stToTL           SEVR: NO_ALARM
> > > > STAT: NO_ALARM      TPRO: 0             VAL: 200
> > > 3. ) The (stupid) question: Why don't I get the value of
> > > HAD:RPC:S1:M0:C9:ToTL at D? At VAL I see it.
> > >
> > > Thanks  for any explanation.
> > >
> > > Peter
> > >
> > > --
> > >   Dr. rer. nat. Peter W. Zumbruch
> > >   EE - department / Controls group / GSI
> > >   E-Mail: P.Zumbruch_at_gsi.de
> > >   Tel: +49-(6159)-71-1435 / Fax: +49-(6159)-71-2986
> > >
> > >   GSI Helmholtzzentrum für Schwerionenforschung GmbH
> > >   Planckstraße 1 / D-64291 Darmstadt / www.gsi.de
> > >
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> > >
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--
Matthieu Bec              Gemini Observatory
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