Dear Jan
Can you explain the tdma configuration of "slot 1 0 1/1 1500 1"?
And how should I configure the cycle (previously in the rtnet.conf, I set
the TDMA cycle to 2000 and TDMA offset to 500) and the slave?
Is it ok for me to use the default configuration in tdma config script?
I have ensure that AT91 acts as the master and it is able to ping the slave
using rtping after the completion of TDMA setup. So is this enough?
Please advice. Thanks
Regards,
Chun Yeow
On 10/29/07, Jan Kiszka <[EMAIL PROTECTED]> wrote:
>
> Yeoh Chun Yeow wrote:
> > Dear Jan,
> >
> > I don't think that I have tested the scenario on "joint TDMA slots or
> the
> > Sync frame immediately followed by the
> > master's payload slot" before. I only tried out the default setup script
> > with 1 master and 1 slave. Please advice on how to do this.
>
> If you ran the default setup for the master on an AT91, you already
> generated a scenario like this: The master's Sync frame is then directly
> followed by its payload slot (offset 0). If you want to drive this
> further, you could add another slot to the master's setup. Use the
> advanced setup mode (TDMA_CONFIG=... in rtnet.conf) and modify the
> master's slot list like this:
>
> master:
> ...
> slot 0 0
> slot 1 0 1/1 1500 1
>
> >
> > By the way, how the link state polling timer will affect the real-time
> > operation?
>
> Probably not dramatically: It will add periodic non-preemptible hardware
> access to your real-time workload. Depending on how tight your schedule
> will be and how long those interaction my take (can't tell as I don't
> have a target to test), this /can/ be problematic. By disabling it, we
> remove one further aspect one has to consider for the real-time design
> of the system.
>
> Jan
>
>
>
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