[ts-7000] Re: Awsome Real Time Capabilities Anyone?

["buga_ohms" <>]

Hi Diego,

Have you continued with this project of real time with upgrade the kernel?

If yes, I really appreciate if you can said your experience.


Thank you by your attention,



Olmer

--- In  "dieghuot" <> wrote:
>
> --- In  "charliem_1216" <charliem_1216@> wrote:
> >
> > --- In  "dieghuot" <dieghuot@> wrote:
> > >
> > > The stock Kernel on the TS-7800 does not provide HRT or Real-Time 
> > > capabilities and this makes me very sad...
> > > 
> > > MICROSECOND RESOLUTION on timers with very low overhead, most RT 
> > > capabilities HUM HUM.
> > > 
> > > My question is: Did anyone try the apply the kernel patches (HRT is 
> > > available from 2.6.24) or the CONFIG_PREEMT_RT patch?
> > 
> > Hi Diego --
> > 
> > I have used HRT & CONFIG_PREEMPT with a 2.6.21 or .22 kernel, but that
> > is on a TS-7250 board (ep9302 chip).  They work very well; as you
> > said, microsecond resolution, very low overhead and very low latency.
> > 
> > HRT for the marvel chip in the TS-7800 have been in mainline kernel
> > since 2.6.27, and a few HRT fixes will be in 2.6.28 (not related to
> > TS-7800), but I don't have a TS-7800 to try out.
> > 
> > Please post your results if you try it.  There are several latency &
> > HRT testing programs available.
> > 
> > Regards, ......... Charlie
> > 
> > > 
> > > Diego,
> > >
> >
> 
> Charlie,
> 
> Thanks for the info, I saw the work that was done for the Marvell chip
> and the ts-7800 on the 2.6.27.  At the moment I am fine-tuning my
> rs-485 interface and have SPI and ADC on the to-do list.  I am
> concerned that installing a new kernel right now would introduce too
> many untested variables to the project...
> 
> That being said, I do need Real-Time and RTAI is off the table (too
> disruptive, and not portable) so I will tackle the kernel upgrade soon
> because:
> 1) I can live with "close to Hard Real Time"
> 2) Mainline support is just too good to pass...
> 
> I will post my findings.
> 
> Diego,
>




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