Re: How to configurate MCA for Octave

[Eric Norum <eric@norum.ca>]

Have you managed to build the example IOC?

Can you use clients like caget or camonitor to read values from that IOC?

Until you’re able to do that you won’t have any success trying things like octave.

Here’s a very quick example — I did this on OS X — you’ll have to make the appropriate substitutions for linux.

1 — Create the example application and an IOC:

wenorum@205 283> makeBaseApp.pl -t example example

wenorum@205 284> makeBaseApp.pl -i -t example example

Using target architecture darwin-x86 (only one available)

The following applications are available:

    example

What application should the IOC(s) boot?

The default uses the IOC's name, even if not listed above.

Application name? 

wenorum@205 285> make

. . . 

2 — Run the example application and get a list of record names:

wenorum@205 286> cd iocBoot/iocexample 

wenorum@205 287> ../../bin/darwin-x86/example st.cmd

#!../../bin/darwin-x86/example

## You may have to change example to something else

## everywhere it appears in this file

< envPaths

epicsEnvSet("ARCH","darwin-x86")

epicsEnvSet("IOC","iocexample")

epicsEnvSet("TOP","/Users/wenorum/tmp/e")

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

cd "/Users/wenorum/tmp/e"

## Register all support components

dbLoadDatabase "dbd/example.dbd"

example_registerRecordDeviceDriver pdbbase

## Load record instances

dbLoadTemplate "db/userHost.substitutions"

dbLoadRecords "db/dbSubExample.db", "user=wenorumHost"

## Set this to see messages from mySub

#var mySubDebug 1

## Run this to trace the stages of iocInit

#traceIocInit

cd "/Users/wenorum/tmp/e/iocBoot/iocexample"

iocInit

Starting iocInit

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

## EPICS R3.14.12.5 $Date: Tue 2015-03-24 09:57:35 -0500$

## EPICS Base built Aug 19 2015

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

iocRun: All initialization complete

## Start any sequence programs

#seq sncExample, "user=wenorumHost"

epics> dbl

wenorumHost:ai1

wenorumHost:ai2

wenorumHost:ai3

wenorumHost:aiExample

wenorumHost:aiExample1

wenorumHost:aiExample2

wenorumHost:aiExample3

wenorumHost:aSubExample

wenorumHost:calc1

wenorumHost:calc2

wenorumHost:calc3

wenorumHost:calcExample

wenorumHost:calcExample1

wenorumHost:calcExample2

wenorumHost:calcExample3

wenorumHost:compressExample

wenorumHost:subExample

wenorumHost:xxxExample

epics> 

3 — Run a client in a different terminal window and monitor a PV in the example IOC:

wenorum@205 211> camonitor wenorumHost:ai1

wenorumHost:ai1                2016-07-22 08:19:47.303034 4 LOW MINOR

wenorumHost:ai1                2016-07-22 08:19:48.302899 5  

wenorumHost:ai1                2016-07-22 08:19:49.302652 6 HIGH MINOR

wenorumHost:ai1                2016-07-22 08:19:50.303030 7 HIGH MINOR

wenorumHost:ai1                2016-07-22 08:19:51.302994 8 HIHI MAJOR

wenorumHost:ai1                2016-07-22 08:19:52.303159 9 HIHI MAJOR

4 — Use octave to read a value from the example IOC:

wenorum@205 212> octave --no-gui

GNU Octave, version 4.0.3

Copyright (C) 2016 John W. Eaton and others.

This is free software; see the source code for copying conditions.

There is ABSOLUTELY NO WARRANTY; not even for MERCHANTABILITY or

FITNESS FOR A PARTICULAR PURPOSE.  For details, type 'warranty'.

Octave was configured for "x86_64-apple-darwin15.5.0".

Additional information about Octave is available at http://www.octave.org.

Please contribute if you find this software useful.

For more information, visit http://www.octave.org/get-involved.html

Read http://www.octave.org/bugs.html to learn how to submit bug reports.

For information about changes from previous versions, type 'news'.

>> pv=mcaopen('wenorumHost:ai1')

MCA Initialized

pv =  1

>> mcaget(pv)

ans =  2

>> mcaget(pv)

ans =  4

>> mcaget(pv)

ans =  5

>> 

On Jul 22, 2016, at 12:56 AM, Hulusi Öz <hulusi.oz1@gmail.com> wrote:

As an extra question, let's say I could do all of these things and I could use the commands. Once I write a script in Octave, where should I save this file ? Should that saved in my_example that I'm running in the iocshell ? If it is that so, which direction should it be ?

-- 
Eric Norum
eric@norum.ca