Experimental Physics and
Industrial Control System

"Lei Ge" <[email protected]> · Wed, 25 Jul 2007 19:29:01 +0800

Hello, everyone,

I made a record support for our special needs. There are 2 arrays in this 
record support, and I wish to read them from host caget. We are using 
base3.13.8.

The definitions for these fields in the dbd file are:  

       field(BCME,DBF_NOACCESS) { 
               prompt("BCM readout for BER") 
               extra("char bcme[402] ") 
               asl(ASL1) 
               special(SPC_DBADDR) 
               interest(3) 
       } 
       field(BCMP,DBF_NOACCESS) { 
               prompt("BCM readout for BER") 
               extra("char bcmp[402] ") 
               asl(ASL1) 
               special(SPC_DBADDR) 
               interest(3) 
       } 

But whenever I caget one of these fields, the cvt_dbaddr is called twice. Is 
it normally called twice? What's the possible problem in my codes?

static long cvt_dbaddr(paddr) 
   struct dbAddr *paddr; 
{ 
   struct bktRecord *pbkt=(struct bktRecord *)paddr->precord; 
   struct bktdset *pdset = (struct bktdset *)(pbkt->dset); 

   if (bkt_debug>3) { 
      printf("cvt_dbaddr\n"); 
      printf("pbkt bcme, %u, bcmp, %u\n", (long)pbkt->bcme, (long)pbkt- 
>bcmp); 
      printf("paddr pfield %u\n", paddr->pfield); 
     } 

   if ( ((long)paddr->pfield)==((long)pbkt->bcme) ) { 
      if (bkt_debug>1) printf("cvt_dbaddr for bcme\n"); 
      (*pdset->read_rfm)(pbkt); 
     } else if ( ((long)paddr->pfield)==((long)pbkt->bcmp) ) { 
      if (bkt_debug>1) printf("cvt_dbaddr for bcmp\n"); 
      (*pdset->read_rfm)(pbkt); 
     } else printf("cvt_dbaddr, where is it called?\n"); 

/*    paddr->pfield = (void *)(pbkt->bcme); */ 
   paddr->no_elements = 402; 
   paddr->field_type = DBF_CHAR; 
   paddr->field_size = 1; 
   paddr->dbr_field_type = DBF_CHAR; 
   return(0); 
} 

Thank you all, 

Ge 

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System