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Re: interrupts and scheduling
- From: Harish Kulkarni <wasinapple at yahoo dot com>
- To: ecos-discuss at ecos dot sourceware dot org
- Date: Fri, 2 Sep 2005 14:18:20 +0100 (BST)
- Subject: Re: [ECOS] interrupts and scheduling
Hello,
We are using cyg_interrupt_mask(), cyg_interrupt_ack()
and cyg_interrupt_unmask().
And doing nothing but some debug variable increaments.
-Thanks
Harish
--- Andrew Lunn <andrew@lunn.ch> wrote:
> On Fri, Sep 02, 2005 at 01:54:44PM +0100, Harish
> Kulkarni wrote:
> > Hello,
> >
> > We have two interrupts one at every .5msecs(INT1)
> and
> > other every 1 msec(INT2).
> >
> > In our application we have two threads. When INT1
> is
> > enabled/handled the scheduler is not able to
> schedule
> > the threads.
> >
> > Where as when only INT2 is enabled both the
> threads
> > get scheduled.
> >
> > We have tried this using mlq and bit-map. But
> found
> > threads scheduling not working when INT1 is
> enabled.
> >
> > The INT1 ISR routine execution time taken is 1.3
> > micro-secs.
>
> Are your ISR & DSR functions doing things they are
> not allowed to do?
> ISRs cannot call any eCos kernel functions. DSRs
> cannot call any
> functions which block.
>
> Andrew
>
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