Experimental Physics and Industrial Control System
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On 7/10/2014 12:53 PM, Eric Norum
wrote:
On Jul 10, 2014, at 9:32 AM, Hill, Jeff <[email protected]>
wrote:
My
configuration of the RTEMS netdemo application
{compact real time kernel, network kernel } would not
fit in 100KB, and this is sans EPICS. The netdemo object code
appears to require more like 500 KB. I believe that
RTEMS has a reputation for being a fairly compact
RTOS, but a complete implementation of the network
kernel probably requires more space. I also have the c++ libraries and
additional bells and whistles configured into RTEMS so
YMMV.
Yeah, the network stack in RTEMS is pretty big. That’s because I
used the BSD Unix network stack as a starting point to port to
RTEMS. It would be really good if someone did the port of LWIP
to RTEMS. I think that would be a much better fit for embedded
applications. But even then EPICS core is going to have a pretty
large memory footprint.
Nice to hear from you Eric. :)
There is a port of an old version of LWIP. It might be of use in
getting a new
version running. The person who did this port didn't make their code
available
until LWIP had moved forward and they didn't have interest in
getting their
work merged. It is critical when porting something to RTEMS to get
the
work pushed upstream.
http://www.rtems.org/ftp/pub/rtems/people/joel/rtems-lwip/
I know it is old but maybe it will help.
--
Joel Sherrill, Ph.D. Director of Research & Development
[email protected] On-Line Applications Research
Ask me about RTEMS: a free RTOS Huntsville AL 35805
Support Available (256) 722-9985
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- References:
- New standards for small and medium sized astronomical observatories Piotr Sybilski
- RE: New standards for small and medium sized astronomical observatories Dalesio, Leo
- RE: New standards for small and medium sized astronomical observatories Piotr Sybilski
- RE: New standards for small and medium sized astronomical observatories Hill, Jeff
- Re: New standards for small and medium sized astronomical observatories Eric Norum
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ANJ, 17 Dec 2015 |
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