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Subject: | Re: EPICS 'isegHAL' module |
From: | "Hill, Bruce via Tech-talk" <[email protected]> |
To: | "[email protected]" <[email protected]> |
Date: | Fri, 9 Aug 2019 05:23:59 +0000 |
Hi All, The embedded IOC in these iSeg CC24 controllers is indeed the fastest and easiest route to getting EPICS control of the modules. If you only have a few crates you can hand customize and install the iseg_epics.db and iseg_epics.sub files and you're good to go! At SLAC we'll be deploying 6-10 of these mpod crates each w/ several HV modules and may add some additional crates and/or LV modules as we commission more LCLS2 chambers. We wanted to be able to upgrade and version control our iSeg IOCs w/ the same tools and EPICS 7 base releases as our other IOCs so we found a way to do that and also add access security. iSeg provided us w/ the arm-apalis gnu toolchain so we're cross-compiling the iSegHAL module on our RHEL7 build server along w/ our EPICS base and support modules and building IOC releases there on NFS. The CC24 uses systemd services for startup, so we disable the isegioc and install three slac systemd services. One service does an NFS mount, the next runs a startup script on the NFS mount that does other NFS mounts, and a third that launches the IOC. I've got this working on a demo unit and am looking forward to getting our deployment crates and HV in so I can iron out any kinks in the scripts. I"ve actually made a number of other changes to our demo system in the course of this development so I need to make sure this all works from a clean factory CC24. If anyone's interested, contact me and I can provide more details re how to get this working. Cheers, - Bruce -- Bruce Hill Member Technical Staff SLAC National Accelerator Lab 2575 Sand Hill Road M/S 10 Menlo Park, CA 94025 On 8/8/19 12:05 AM, laurent daudin via Tech-talk wrote:
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