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Re: isr routine does not invoke for RTC interrupt


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>


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