Re: ioc reading data from files

[Luedeke Andreas <andreas.luedeke@psi.ch>]

Pierrick Hanlet wrote on 21.10.2008 22:00:
> [...] Until the hardware is all in place, I can use my simple setup to develop my
> edm panels, etc.  Does anyone have advice, or preferably working examples,
> of code that reads files from into ioc and the ioc writes the data to the database?
>   
Hi Pierrick,
You just want to have your records change in a given sequence to test
your graphical user interfaces?

Then don't do it on the IOC, use a shell script instead that reads the
data from the file and write it with "caput".
E.g. if you have the file format: <channel> <value> <delay> in your
file, you could use the shell script:

    #!/bin/sh
    while true
    do
        read channel val delay
        if [ $? -ne 0 ]; then break ;fi
        caput $channel $val
        if [ $delay -gt 0 ] ;then sleep $delay;fi
    done

If you name the script "fileput" and your data file "data" you call it
"fileput <data".
Of course you need to have the location of the binary of 'caput' in your
PATH, it's part of EPICS base.

Regards
Andreas

-- 
Dr. Andreas Luedeke, SLS Operations Manager, Tel:+41-56-3104002
Andreas.Luedeke@psi.ch, http://people.web.psi.ch/luedeke