Experimental Physics and
Industrial Control System

"Allison, Stephanie" <[email protected]> · Mon, 18 Aug 2008 08:17:31 -0700

Hi Chen, 

> I know I can use
> ==========================================
> dbLoadRecords ("db/test.db","device=${DEV},channel=1")
> dbLoadRecords ("db/test.db","device=${DEV},channel=2")
> dbLoadRecords ("db/test.db","device=${DEV},channel=3")
> dbLoadRecords ("db/test.db","device=${DEV},channel=4")
> ==========================================
> in st.cmd script and epics will get the system environment "DEV" so
> that I don't need to modify my ioc package and just use
> export DEV=blahblah
> on each device. But I kind of like my st.cmd script to be clean and neat,
> thus I made some .substitutions file like:
> ======================
> file "db/test.db" {
>     pattern { device, channel }
>         { "${DEV}", 1 }
>         { "${DEV}", 2 }
>         { "${DEV}", 3 }
>         { "${DEV}", 4 }
> }
> ======================

Let's say the "some .substitutions file" had a name like "testAll.substitutions" and that you add a line to your Makefile like this:

DB += testAll.db

The build should create testAll.db from your testAll.substitutions file (I use "should" since I don't know what version of epics you are using).

> For your information, I may have many lines, so the latter is actually
> I preferred. But when I put
> dbLoadTemplate "db/test.substitutions"

If you have the build create "testAll.substitutions", then you would add this line to your st.cmd:

dbLoadRecords ("db/testAll.db","device=${DEV})

Stephanie Allison

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System