Experimental Physics and
Industrial Control System

I am extremely new to EPICS. To learn EPICS, I am trying to created an IOC application which would run on linux RedHat Enterprise 3 platform. I have installed a National Instruments PCI-GPIB interface to which I have connected HP34401A multimeter. I have installed on the same computer National Instruments software package NI4882, which I believe is the device driver for the PCI-GPIB interface. In the package NI supplied two test programs, which I built and they work.

I followed a tutorial "How to create EPICS device support for a simple serial or GPIB device" by Eric Norum to create a support module for the HP multimeter. Then I created a test application, as it is described in the same tutorial. I start the test application and this is what I get:

!--------- start of program output ---------------------------------
zms@esaux1 $ ../../bin/linux-x86/hpmm st.cmd
#!../../bin/linux-x86/hpmm
## You may have to change hpmm to something else
## everywhere it appears in this file
< envPaths
epicsEnvSet(ARCH,"linux-x86")
epicsEnvSet(IOC,"iochpmm")
epicsEnvSet(TOP,"/afs/slac.stanford.edu/g/esa/esalib/app/epics/hpmm")
epicsEnvSet(HPMM,"/afs/slac/g/esa/esalib/app/epics/modules/hpmm")
epicsEnvSet(ASYN,"/afs/slac/g/esa/esalib/app/epics/support/asyn/4-3")
epicsEnvSet(EPICS_BASE,"/afs/slac/package/epics/R3.14.6/base")
cd /afs/slac.stanford.edu/g/esa/esalib/app/epics/hpmm
## Register all support components
dbLoadDatabase("dbd/hpmm.dbd",0,0)
hpmm_registerRecordDeviceDriver(pdbbase)
## Load record instances
cd /afs/slac/g/esa/esalib/app/epics/modules/hpmm
dbLoadRecords("db/devhpmm.db","P=HPMM:,R=,L=0,A=10")
cd /afs/slac.stanford.edu/g/esa/esalib/app/epics/hpmm/iocBoot/iochpmm
iocInit()
############################################################################
###  EPICS IOC CORE built on Mar  6 2005
###  EPICS R3.14.6 $R3-14-6$ $2004/05/28 19:27:47$
############################################################################
Starting iocInit
2007/08/27 14:28:04.494 devSupportGpib:getDeviceInstance link 0 L0 failed asynManager:connectDevice port L0 not found

HPMM:hpmm:idn: init_record : no driver for link 0
2007/08/27 14:28:04.494 devSupportGpib:getDeviceInstance link 0 L0 failed asynManager:connectDevice port L0 not found

HPMM:hpmm:read: init_record : no driver for link 0
## Start any sequence programs
#seq sncxxx,"user=zmsHost"
iocInit: All initialization complete
epics>
!---------- end of program output ---------------------------------------

In the above, the GPIB number is 0, the instrument primary GPIB address is 10 and its secondary address is 0.

I do not know how to make a connection between the NI4882 driver and the test application. I tried something as simpleminded as including a shared library, which is in /usr/local/lib/libgpibapi.so, in the build of the test application. This had no effect. The reason I tried that is because the NI test programs used that library when binaries are linked.

Any help will be greatly appreciated.

Zen

Hi Zenon,
Within your st.cmd I didn't see a call like this:

HTH
--
Peter Mueller in
Physikalisch-Technische Bundesanstalt
Division 7.13 at Bessy II

Physikalisch-Technische Bundesanstalt (PTB)
Abbestrasse 2-12
10587 Berlin
Germany

phone:  +49 (0)30 6392-5092
fax:                  -5082

References:

Soft IOC for A GPIB Instrument Szalata, Zenon M.

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