Re: New standards for small and medium sized astronomical observatories

[Pete Jemian <jemian@anl.gov>]

One of the low cost devices that runs the EPICS software (both server 
and some clients) is the Raspberry Pi.

On 7/9/2014 10:09 AM, Johnson, Andrew N. wrote:
> > Could you point me to some example of embedded device with low
> > resources (10K-100KB of memory, 8-bit processor, preferably bare metal
> > distribution), that supports the EPICS? I know that I am pushing the
> > limits, but the optimization (low power consumption) is an important
> > factor for us.
>
> EPICS is not designed to run on such small systems, the smallest IOCs
> would need to run RTEMS or VxWorks (or be ported to something similar)
> and have 8-12MB of RAM, 16MB recommended. Anything smaller would need to
> run custom code and communicate with a real IOC (which may be remote)
> over a network, serial or field bus connection. This architecture can
> protect the small system from being overloaded by communications
> requests from other devices, and help keep your power consumption low.

--
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Pete R. Jemian, Ph.D.                <jemian@anl.gov>
Beam line Controls and Data Acquisition, Group Leader
Advanced Photon Source,   Argonne National Laboratory
Argonne, IL  60439                   630 - 252 - 3189
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   Education is the one thing for which people
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