[time-nuts] FPGA GPSDO (Was: Re: NTP jitter with Linux)

Javier Serrano javier.serrano.pareja at gmail.com
Sat Apr 7 16:11:46 UTC 2012


On Sat, Apr 7, 2012 at 1:47 PM, Javier Herrero <jherrero at hvsistemas.es> wrote:
> RTEMS also (see www.milkymist.org , an open source hardware and
> software project with an LM32 implementation on a Spartan 6 FPGA using
> RTEMS.

We use the LM32 (http://www.ohwr.org/projects/lm32) in the White
Rabbit and other projects. Here's a LibreOffice presentation on why it
was chosen: http://www.ohwr.org/attachments/download/559 It's smaller
than the LEON3 and more capable than the ZPU. We found it to be a good
compromise. The guys in GSI (a German Physics lab) developed a good
debugging tool for it (http://www.ohwr.org/projects/phase). Our PTP
stack (http://www.ohwr.org/projects/ppsi/wiki) will soon run on it.

Cheers,

Javier




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