Experimental Physics and
Industrial Control System

1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 <2015> 2016 2017 2018 2019 2020 2021 2022 2023 2024	Index	1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 <2015> 2016 2017 2018 2019 2020 2021 2022 2023 2024
<== Date ==>		<== Thread ==>

Subject:	RE: To write data to VDCT from device support
From:	"Mooney, Tim M." <[email protected]>
To:	Deepika Thakur <[email protected]>, "[email protected]" <[email protected]>
Date:	Fri, 7 Aug 2015 16:10:10 +0000

You need to allocate a dbAddr structure for dbNameToAddr() to fill in.

    struct dbAddr dbaddr;
    struct dbAddr *paddr = &dbaddr;
    ...
    status = dbNameToAddr("optoRead.VAL", paddr);

To get the array data into the waveform record's array, copy it to pwaf->bptr, and set pwaf->nord to the number of values you copied. See base/src/dev/softDev/devWfSoft.c for an example.

What you're doing is writing data to a waveform record's VAL field. VDCT doesn't have anything to do with this.

Tim Mooney ([email protected]) (630)252-5417
Software Services Group (www.aps.anl.gov)
Advanced Photon Source, Argonne National Lab

From: [email protected] [[email protected]] on behalf of Deepika Thakur [[email protected]]
Sent: Friday, August 07, 2015 4:44 AM
To: [email protected]
Subject: To write data to VDCT from device support

Hello,

I have created following device support. Now what I want is to write values of a array(as per following code c2 array) to a waveform record(PV name: optoRead) in VDCT

#include <stdio.h>

#include <string.h>

#include <stddef.h>

#include <math.h>

#include <stdlib.h>

#include "alarm.h"

#include "cvtTable.h"

#include "dbDefs.h"

#include "dbAccess.h"

#include "recGbl.h"

#include "recSup.h"

#include "devSup.h"

#include "link.h"

#include "aiRecord.h"

#include "waveformRecord.h"

#include "epicsExport.h"

int i;

unsigned short c1[50],c2[10];

static long read_waveform();

static long read_wafopto();

//------------STRUCTURE FOR WAVEFORM---------

struct

{

long number;

DEVSUPFUN report;

DEVSUPFUN init;

DEVSUPFUN init_record;

DEVSUPFUN get_ioint_info;

DEVSUPFUN read_waveform;

}

devmywaveform = {

NULL,

read_waveform};

epicsExportAddress(dset,devmywaveform);

//------------STRUCTURE FOR WAVEFORM to get opto-reading---------

struct

{

long number;

DEVSUPFUN report;

DEVSUPFUN init;

DEVSUPFUN init_record;

DEVSUPFUN get_ioint_info;

DEVSUPFUN read_wafopto;

}

devwafopto = {

NULL,

read_wafopto};

epicsExportAddress(dset,devwafopto);

//-----------------CODE-----------------//

static long read_waveform(pwaf)

struct waveformRecord *pwaf;

{

//int i;

long int n;

unsigned short myptr[100];

struct dbAddr *paddr;

//unsigned short c1[50],c2[10];

n = pwaf->nelm;

paddr = dbGetPdbAddrFromLink(&pwaf->inp);

dbGet(paddr,pwaf->ftvl,(void *)myptr,0,&n,NULL);

for(i=0;i<=71;i++)

{

printf("\ndata=%x\n",myptr[i]);

}

for(i=0;i<36;i++)

{

if(myptr[i+36]==143)

{

c1[i]=myptr[i]-50;

}

else

c1[i]=myptr[i];

}

for(i=0;i<36;i++)

{

printf("\ndata1=%u %x\n",c1[i],c1[i]);

}

for(i=0;i<=4;i++)

{

c2[i]=c1[i+4];

}

for(i=0;i<=4;i++)

{

printf("\ndata2=%u",c2[i]);

}

return(2);

}

//---DEVICE SUPPORT TO VDCT---

static long read_wafopto(popto)

struct waveformRecord *popto;

{

//char *optoRead[10];

long int n;

struct dbAddr *paddr;

//paddr = dbGetPdbAddrFromLink(&inp->popto);

//dbPut(paddr,popto->ftvl,(void *)c2,&n);

n = popto->nelm;

dbNameToAddr("optoRead.VAL",paddr);

dbPut(paddr,popto->ftvl,(void *)c2,n);

//popto->val=c2;

return(2);

}

DB FILE:

record(waveform, optoRead) {

field(SCAN, "Passive")

field(NELM, "4")

field(FTVL, "USHORT")

field(DTYP, "wafoptosupport")

}

I want to write value of c2 array in waveform record in VDCT. On doing "caget" I get following output:

caget optoRead

optoRead 4 3 0 0 0

Output should be:

optoRead 4 127 255 0 0

When I do "make" i do not get any error but on doing "make clean install" I get following warning:

../aiDevsup.c: In function ‘read_wafopto’:

../aiDevsup.c:274:14: warning: ‘paddr’ is used uninitialized in this function [-Wuninitialized]

dbNameToAddr("optoRead.VAL",paddr);

Please suggest how to resolve this warning .Also suggest is there any other way to write this data in VDCT or is it possible to use any other record other than waveform. My ultimate aim is to get this data in VDCT and convert it in binary.

References:: To write data to VDCT from device support Deepika Thakur

Navigate by Date:: Prev: Re: Data Archiver Rod Nussbaumer; Next: Re: Data Archiver Jeong Han Lee; Index: 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 <2015> 2016 2017 2018 2019 2020 2021 2022 2023 2024
Navigate by Thread:: Prev: To write data to VDCT from device support Deepika Thakur; Next: To read single element from waveform record ishita bhatia; Index: 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 <2015> 2016 2017 2018 2019 2020 2021 2022 2023 2024

ANJ, 16 Dec 2015

· Home · News · About · Base · Modules · Extensions · Distributions · Download ·
· Search · EPICS V4 · IRMIS · Talk · Bugs · Documents · Links · Licensing ·

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System