Experimental Physics and
Industrial Control System

"Allison, Stephanie" <[email protected]> · Tue, 6 May 2008 18:38:53 -0700

Hi John,

Are you using gpib support?  This may not be related but I get a segmentation fault when I set eos to non-NULL in the DSET gpibCmd.  To fix, in asyn/asynGpib/asynGpib.c, the readIt routine, the eomReason pointer needs to be checked before setting:

    if(pgpibPvt->eoslen==1 && nt>0) {
        if(data[nt-1]==pgpibPvt->eos) {
/****  add eomReason pointer check ****/
            if (eomReason) *eomReason |= ASYN_EOM_EOS;
            nt--;
        }
    }
    if(nt<maxchars) data[nt] = 0;
    if(nt==maxchars)
/****  add eomReason pointer check ****/
      if (eomReason) *eomReason |= ASYN_EOM_CNT;

Perhaps Mark Rivers can add this fix to the next version of asyn?  And perhaps I shouldn't use devGpib but it seemed less work to convert my old existing gpib stuff to devGpib...

Thank you,

Stephanie Allison

> -----Original Message-----
> From: [email protected] 
> [mailto:[email protected]] On Behalf Of John Sinclair
> Sent: Tuesday, May 06, 2008 12:06 PM
> To: Tech-talk
> Subject: asyn problem
> 
> For EPICS R3.14.9 on x86 linux with asyn-vxi11-gpib talking to E5810A 
> device:
> 
> asyn R4-1 has worked well for several years.
> 
> Today, I reinstalled software and upgraded to asyn R4-9.
> 
> 
> I get the following message and a soft ioc crash (before 
> iocInit is called):
> 
> epics> vxi11Configure("L0","10.1.75.206",0,0.0,"gpib0",0,0)
> epics> 2008/05/06 13:36:40.977 L0 vxi11 clientCall errno Permission 
> denied clnt_stat 5
> 2008/05/06 13:36:40.977 L0 vxiCreateIrqChannel 
> (create_intr_chan): RPC: 
> Timed out
> 
> 2008/05/06 13:36:40.977 L0 Warning -- SRQ not operational.
> Segmentation fault
> 
> ----------------------------------------
> 
> Any guidance?
> 
> John Sinclair
> 
> 

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System