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Re: how to generate external interrupts
- From: Partha Palit <chessrook2001 at yahoo dot com>
- To: "Frank Ch. Eigler" <fche at redhat dot com>
- Cc: sid at sources dot redhat dot com
- Date: Thu, 26 Jun 2003 15:46:59 -0700 (PDT)
- Subject: Re: how to generate external interrupts
Hello,
Thank you Frank for showing the direction to
generating an external interrupt.
Kindly advise if my approach is correct. I edited the
sid.conf as follows-
new sid-sched-sim sensor-sched
//then I set the num clients to 5...
//then connected the sched event to the intrctrl...
connect-pin sensor-sched 1-event -> intrctrl source-16
//then I appropriately set the 'regular' and 'time'
attributes.
The problem is that I am unable to catch the
interrupt.I am using eCos as the RTOS. In my program,
I register an ISR at "vector 16". Is this correct ? I
saw some memory mapping for the timers and UART in the
SID config file. Do I have to do somehing like that?
Also, when I checked the eCos header file
(hal_intr.h), max interrupts were set to 8.If,possible
could you kindly comment on this?
P.S: my platform - ARM-PID.
Thanks for your time.
-Partha
--- "Frank Ch. Eigler" <fche@redhat.com> wrote:
> Hi -
>
> > >How would you prefer to cause interrupts?
> >
> > I want to simulate a periodic interrupt(
> specifically,
> > I want to be able to count the heart beats [...]
>
> OK.
>
> > Hence, I guess a script or a program would be
> > a suitable way to do it.
>
> That's possible, but not necessary for this context.
>
> Probably the easiest thing to do is to use one of
> the
> sid scheduler objects to supply the periodic
> interrupt.
> You would have to decide whether you would like
> these
> interrupts based on the progression of host (real)
> time,
> versus target (simulated) time. Then, you'd pick a
> suitable time interval, in milliseconds or clock
> ticks
> respectively. Then you'd arrange to get the chosen
> scheduler to send out a ping at the chosen interval
> to the appropriate interrupt input pin. This latter
> bit is most easily done by emitting and editing the
> sid configuration file that otherwise models your
> desired system.
>
>
> > Presently,I am reading through the SID user
> manual. Is
> > there any other documentation, which can be
> helpful?
>
> The other two families of documentation that you may
> find
> helpful consist of a guide on developing sid
> components and
> the set of individual component reference pages.
> These may
> all be found on the sid project web page.
>
>
> - FChE
>
> ATTACHMENT part 2 application/pgp-signature
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