Experimental Physics and
Industrial Control System

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<== Date ==>		<== Thread ==>

Subject:	RE: Problems getting PI motors working
From:	Mark Rivers <[email protected]>
To:	'Eric Norum' <[email protected]>, EPICS mailing list <[email protected]>
Date:	Tue, 24 Oct 2017 17:52:36 +0000

That error about the int32 interface not being found is familiar. It is usually a problem with the database file, where the wrong asyn port name is used in the motor record INP link. It should be the port for the asynMotorController driver, i.e. PIE873_1 or PIE873_1 in your case. But perhaps instead you have used the name of the underlying TCP port, i.e. pie873A or pie873B in your case?

Mark

From: Eric Norum [mailto:[email protected]]
Sent: Tuesday, October 24, 2017 12:48 PM
To: Mark Rivers; EPICS mailing list
Subject: Problems getting PI motors working

I have to admit that I find the EPICS motor record and associated drivers pretty much a black art. I’m trying to get some PI motors running but I’m getting error messages and subsequent core dumps. Below is the IOC startup and application Makefile. The PI_GCS2_CreateController call seems to work fine, but then at record initialization time I get a report that the int32 interface can’t be found and then later on I get a core dump when some NULL pointers get dereferenced. I suspect that I’m missing some ‘.dbd’ file in my application Makefile, but I don’t know how to figure out what.

Suggestions eagerly welcomed.

#!../../bin/linux-x86_64/piMotor

< envPaths

epicsEnvSet("ARCH","linux-x86_64")

epicsEnvSet("IOC","iocpiMotor")

epicsEnvSet("TOP","/home/als1/acct/enorum/tmp/piMotor")

epicsEnvSet("ASYN","/usr/local/epics/R3.14.12/modules/R3/soft/synApps_5_8/support/asyn4-28")

epicsEnvSet("MOTOR","/usr/local/epics/R3.14.12/modules/R3/soft/motor/motorR6-9")

epicsEnvSet("EPICS_BASE","/usr/local/epics/R3.14.12/base")

epicsEnvSet("IOC_INFO","/iocinfo")

## Register all support components

cd "/home/als1/acct/enorum/tmp/piMotor"

dbLoadDatabase "dbd/piMotor.dbd"

piMotor_registerRecordDeviceDriver pdbbase

#############################################################################

# PI piezzo motors

drvAsynIPPortConfigure("pie873A","131.243.201.111:50000", 0, 0, 0)

asynOctetSetInputEos("pie873A",0,"\n")

asynOctetSetOutputEos("pie873A",0,"\n")

asynSetTraceMask("pie873A", 0, 1)

asynSetTraceIOMask("pie873A", 0, 1)

# PI_GCS2_CreateController(

# port name,

# asyn port name,

# num axes,

# priority,

# stackSize,

# moving poll period (ms),

# idle poll period (ms) )

PI_GCS2_CreateController("PIE873_1", "pie873A", 1, 0, 0, 200, 1000)

PIasynAxis::PIasynAxis() 0: 1

drvAsynIPPortConfigure("pie873B","131.243.201.112:50000", 0, 0, 0)

asynOctetSetInputEos("pie873B",0,"\n")

asynOctetSetOutputEos("pie873B",0,"\n")

asynSetTraceMask("pie873B", 0, 1)

asynSetTraceIOMask("pie873B", 0, 1)

# PI_GCS2_CreateController(

# port name,

# asyn port name,

# num axes,

# priority,

# stackSize,

# moving poll period (ms),

# idle poll period (ms) )

PI_GCS2_CreateController("PIE873_1", "pie873B", 1, 0, 0, 200, 1000)

PIasynAxis::PIasynAxis() 0: 1

dbLoadRecords("db/PI_motor.db")

#############################################################################

# Start EPICS

cd /home/als1/acct/enorum/tmp/piMotor/iocBoot/iocpiMotor

iocInit

Starting iocInit

############################################################################

## EPICS R3.14.12.1 $Date: Tue 2011-04-26 15:36:19 -0500$

## EPICS Base built Sep 3 2013

############################################################################

2017/10/24 10:41:45.110 devMotorAsyn::init_record, PIE873:m1 find int32 interface failed

2017/10/24 10:41:45.110 devMotorAsyn::init_record, PIE873:m2 find int32 interface failed

Segmentation fault (core dumped)

And here’s my application Makefile:

TOP=../..

include $(TOP)/configure/CONFIG

#----------------------------------------

# ADD MACRO DEFINITIONS AFTER THIS LINE

#=============================

# Build the IOC application

PROD_IOC = piMotor

# piMotor.dbd will be created and installed

DBD += piMotor.dbd

# piMotor.dbd will be made up from these files:

piMotor_DBD += base.dbd

# Include dbd files from all support applications:

piMotor_DBD += asyn.dbd

piMotor_DBD += drvAsynIPPort.dbd

piMotor_DBD += motorSupport.dbd

piMotor_DBD += motorSimSupport.dbd

piMotor_DBD += PI_GCS2Support.dbd

# Add all the support libraries needed by this IOC

piMotor_LIBS += asyn

piMotor_LIBS += motor

piMotor_LIBS += motorSimSupport

piMotor_LIBS += PI_GCS2Support

# piMotor_registerRecordDeviceDriver.cpp derives from piMotor.dbd

piMotor_SRCS += piMotor_registerRecordDeviceDriver.cpp

# Build the main IOC entry point on workstation OSs.

piMotor_SRCS_DEFAULT += piMotorMain.cpp

piMotor_SRCS_vxWorks += -nil-

# Add support from base/src/vxWorks if needed

#piMotor_OBJS_vxWorks += $(EPICS_BASE_BIN)/vxComLibrary

# Finally link to the EPICS Base libraries

piMotor_LIBS += $(EPICS_BASE_IOC_LIBS)

#===========================

include $(TOP)/configure/RULES

#----------------------------------------

# ADD RULES AFTER THIS LINE

--
Eric Norum
[email protected]

Replies:: Re: Problems getting PI motors working Eric Norum

References:: Problems getting PI motors working Eric Norum

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ANJ, 21 Dec 2017

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Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System