Experimental Physics and
Industrial Control System

Andrew Johnson <[email protected]> · Tue, 29 Nov 2011 10:18:21 -0600

Hi Luciano & Mark,

On 2011-11-29 Piccoli, Luciano wrote:
> 
> Here is the output and the dbpr's.

> [lpiccoli@cdlx22 iocMksu]$ ./st.cmd
> #! ../../bin/linux-x86/example
> dbLoadDatabase("../../dbd/example.dbd")
> #dbLoadDatabase("HMSApp.dbd")
> example_registerRecordDeviceDriver(pdbbase)
> # Registering MKSU iocsh() functions
> drvMksu_init()
> # Registering MKSU iocsh() functions
> drvAsynIPPortConfigure("MksuServer", "194.168.0.21:56789 UDP", 0, 0, 1)
> initMksu("Mksu", "MksuServer")
> # Creating MKSU object
> asynSetTraceIOMask("MksuServer",0,4)
> asynSetTraceMask("MksuServer",0,255)
> dbLoadTemplate("mksu.substitutions")
> #dbLoadRecords("mksu.db")
> iocInit()
> Starting iocInit
> ###########################################################################
> # ## EPICS R3.14.10-lcls1 $R3-14-10$ $2008/10/27 19:39:04$
> ## EPICS Base built Jul 15 2009
> ###########################################################################
> KLYS:IN20:3130:MOD_TRIG_DELAY_READ devAsynInt32::initCommon  Link must be
> INST_IO
> KLYS:IN20:3130:WF_TRIG_DELAY_READ devAsynInt32::initCommon  Link must be
> INST_IO
> KLYS:IN20:3130:MOD_TRIG_DELAY_WRITE devAsynInt32::initCommon  Link must be
> INST_IO
> KLYS:IN20:3130:WF_TRIG_DELAY_WRITE devAsynInt32::initCommon  Link must be
> INST_IO
> iocRun: All initialization complete

Those error messages are printed by the initCommon() routine in 
$(ASYN)/asyn/devEpics/devAsynInt32.c but most of the error string comes from 
from the parseLinkMask() routine in asynEpicsUtils.c.  However the code in 
initCommon() calls the latter if it first gets an error from the call to the 
parseLink() routine, and unfortunately this results in the error message from 
the first call being overwritten.

I wonder if what's happening here is that the parseLink() routine is returning 
an error of some kind (there are lots of "goto error" statements in the case 
INST_IO: section), but the error reporting code is not telling us what the 
actual problem is, and instead is giving us a secondary error.  That looks to 
me like a shortcoming of the code in initCommon().

- Andrew
-- 
Optimization is the process of taking something that works and
replacing it with something that almost works, but costs less.
-- Roger Needham

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System