Re: [ECOS] isr routine does not invoke for RTC interrupt

["Michael Anburaj" <embeddedeng@hotmail.com>]

Hi,

Interrupt controller Registers:
1. The corresponding Interrupt Mask bit could be set <or enable bit not set>
2. If there is a global interrupt Mask bit; could be set <or Global enable 
bit not set>
ARM core register:
3. I bit in CPSR set <ARM specific – IRQs disabled>.

-Mike.

>From: Satish Kumar <satish@bvt.sc.sanyo.co.jp>
>To: Satish Kumar 
><satish@bvt.sc.sanyo.co.jp>,ecos-discuss@sources.redhat.com
>Subject: Re: [ECOS] isr routine does not invoke for RTC interrupt
>Date: Wed, 17 Sep 2003 19:17:26 +0900
>
>Ok,
>      i have used the system timer and not the RTC..the interrupts are
>gettin generated , but the isr routines are not being called..what could
>be the reason..?
>
>thanks
>satish
>
>
>
>
>On Wed, 17 Sep 2003 12:14:16 +0200
>Andrew Lunn <andrew@lunn.ch> wrote:
>
> > On Wed, Sep 17, 2003 at 06:50:04PM +0900, Satish Kumar wrote:
> > >
> > > Hi,
> > >    i m testing this clocktruth.cxx in the kernel/tests/ directory
> > > to test my on-board timer. well i see that though the corresponding
> > > timer interrupt gets generated, the isr routine is not called..i don`t
> > > understand how to solve this problem.
> > >
> > >    also my RTC time period is set to 1, since it generates 1 sec
> > > timer interval for 1 Hz clock input. i m not sure were i have gone 
>wrong.
> > >
> > > plz feel free to ask details to answer my queries..
> >
> > RTC means real time clock. It gives you the time of day, 11.07 BST,
> > 17/09/2003.
> >
> > eCos does not use this sort of clock. eCos uses a plain timer. These
> > are generally a count down register clocked by a high speed
> > clock. When it reaches zero, it interrupts and reloads the
> > counter. eCos normally sets this up to generate 100 interrupts per
> > second.
> >
> > So you need to change you HAL so that i uses a timer and not the RTC.
> >
> >    Andrew
> >
> >
>
>--
>Satish Kumar <satish@bvt.sc.sanyo.co.jp>
>
>
>--
>Before posting, please read the FAQ: http://sources.redhat.com/fom/ecos
>and search the list archive: http://sources.redhat.com/ml/ecos-discuss
>

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