CAUTION: The EPICS branch, I will be using in this blog is not an upstream branch, be warned to use it only for experimental purpose.
In the previous blog where I tried to explain how to build a BSP for RTEMS5. This time I will go a step further and will tell you how to build the same for EPICS! But hey, you might be wondering what is EPICS?
What is EPICS?
EPICS offers a collection of software tools for the construction of distributed control systems for experimental physics projects.
EPICS includes a runtime database, robust network protocols, an extensive collection of device drivers for hardware connectivity, and a set of client tools for operator control and monitoring. It also includes data archiving and alarms.
Let’s build!
Prerequisites: Everything will be good to go if you have installed/built pc-386 BSP from this tutorial
Step 1: Download this particular branch of EPICS. This branch is “playground” version of EPICS of my mentor Heinz which has some key components to support RTEMS 5.
Step 2: Get inside the ‘development’ directory as created and discussed in the previous blog and make another directory named EPICS.
mkdir EPICS
Unzip the downloaded Zip file inside this directory.
Step 3: The development directory should look somewhat like this now.
development |__EPICS |__epicsBaseOwnPlayground-3afec267ab08568ea454789e562450b00feea5c0 |__rtems |__rtems-5 |__src | |__rsb |__5 |__kernels-5 |__pc-386
Step 4: Rename ‘epicsBaseOwnPlayground-3afec267ab08568ea454789e562450b00feea5c0’ to ‘epics-sep’ just for a simpler name. Now cd into ‘epics-sep’
cd epics-sep
Step 5: Open your favourite code editor at this point of the directory as now we have to make few changes in the configuration files of ‘epics-sep’ to build pc-386 BSP.
Step 6: In epics-base/configure/CONFIG_SITE, set:
CROSS_COMPILER_TARGET_ARCHS= RTEMS-pc386
Step 7: Then we have to set in configure/os/CONFIG_SITE.Common.RTEMS,
where to find RTEMS part.
Where to find RTEMS
APS:
RTEMS_SERIES = 5
RTEMS_VERSION = 5
RTEMS_BASE = /home/mritunjay/development/rtems/$(RTEMS_VERSION)
Please change the RTEMS_BASE according to the location where you have stored it.
Step 8: Save the above changes and run make
make
And there it is! You have built EPICS7 for RTEMS5 for pc-386 successfully!
References: